You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@kvrocks.apache.org by ti...@apache.org on 2022/10/15 01:06:26 UTC

[incubator-kvrocks] branch unstable updated: Move TCL test unit/type/zset to Go case (#988)

This is an automated email from the ASF dual-hosted git repository.

tison pushed a commit to branch unstable
in repository https://gitbox.apache.org/repos/asf/incubator-kvrocks.git


The following commit(s) were added to refs/heads/unstable by this push:
     new 9f462d0  Move TCL test unit/type/zset to Go case (#988)
9f462d0 is described below

commit 9f462d08a997d37b77c5391d4b9d87a2323c3e4f
Author: IoCing <39...@users.noreply.github.com>
AuthorDate: Sat Oct 15 09:06:20 2022 +0800

    Move TCL test unit/type/zset to Go case (#988)
    
    Co-authored-by: tison <wa...@gmail.com>
---
 tests/gocase/unit/type/zset/zset_test.go |  951 +++++++++++++++++++++++++++
 tests/gocase/util/assertions.go          |    7 +
 tests/gocase/util/random.go              |    4 +
 tests/tcl/tests/test_helper.tcl          |    1 -
 tests/tcl/tests/unit/type/zset.tcl       | 1053 ------------------------------
 5 files changed, 962 insertions(+), 1054 deletions(-)

diff --git a/tests/gocase/unit/type/zset/zset_test.go b/tests/gocase/unit/type/zset/zset_test.go
new file mode 100644
index 0000000..777f821
--- /dev/null
+++ b/tests/gocase/unit/type/zset/zset_test.go
@@ -0,0 +1,951 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package zset
+
+import (
+	"context"
+	"fmt"
+	"math"
+	"math/rand"
+	"sort"
+	"strconv"
+	"strings"
+	"testing"
+
+	"golang.org/x/exp/slices"
+
+	"github.com/apache/incubator-kvrocks/tests/gocase/util"
+	"github.com/go-redis/redis/v9"
+	"github.com/stretchr/testify/require"
+)
+
+func createZset(rdb *redis.Client, ctx context.Context, key string, items []redis.Z) {
+	rdb.Del(ctx, key)
+	for _, it := range items {
+		rdb.ZAdd(ctx, key, it)
+	}
+}
+
+func createDefaultZset(rdb *redis.Client, ctx context.Context) {
+	createZset(rdb, ctx, "zset", []redis.Z{
+		{math.Inf(-1), "a"},
+		{1, "b"},
+		{2, "c"},
+		{3, "d"},
+		{4, "e"},
+		{5, "f"},
+		{math.Inf(1), "g"}})
+}
+
+func createDefaultLexZset(rdb *redis.Client, ctx context.Context) {
+	createZset(rdb, ctx, "zset", []redis.Z{
+		{0, "alpha"},
+		{0, "bar"},
+		{0, "cool"},
+		{0, "down"},
+		{0, "elephant"},
+		{0, "foo"},
+		{0, "great"},
+		{0, "hill"},
+		{0, "omega"}})
+}
+
+func reverse(s []redis.Z) {
+	for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
+		s[i], s[j] = s[j], s[i]
+	}
+}
+
+func basicTests(t *testing.T, rdb *redis.Client, ctx context.Context, encoding string) {
+	t.Run(fmt.Sprintf("Check encoding - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "ztmp")
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 10, Member: "x"})
+	})
+
+	t.Run(fmt.Sprintf("ZSET basic ZADD and score update - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "ztmp")
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 10, Member: "x"})
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 20, Member: "y"})
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 30, Member: "z"})
+		require.Equal(t, []string{"x", "y", "z"}, rdb.ZRange(ctx, "ztmp", 0, -1).Val())
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 1, Member: "y"})
+		require.Equal(t, []string{"y", "x", "z"}, rdb.ZRange(ctx, "ztmp", 0, -1).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZSET basic ZADD the same member with different scores - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "ztmp")
+		require.Equal(t, int64(1), rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 10, Member: "x"}, redis.Z{Score: 20, Member: "x"}).Val())
+		require.Equal(t, []string{"x"}, rdb.ZRange(ctx, "ztmp", 0, -1).Val())
+		require.Equal(t, float64(20), rdb.ZScore(ctx, "ztmp", "x").Val())
+
+		require.Equal(t, int64(2), rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 30, Member: "x"}, redis.Z{Score: 40, Member: "y"}, redis.Z{Score: 50, Member: "z"}).Val())
+		require.Equal(t, []string{"x", "y", "z"}, rdb.ZRange(ctx, "ztmp", 0, -1).Val())
+		require.Equal(t, float64(30), rdb.ZScore(ctx, "ztmp", "x").Val())
+	})
+
+	t.Run(fmt.Sprintf("ZSET element can't be set to NaN with ZADD - %s", encoding), func(t *testing.T) {
+		require.Contains(t, rdb.ZAdd(ctx, "myzset", redis.Z{Score: math.NaN(), Member: "abc"}).Err(), "float")
+	})
+
+	t.Run("ZSET element can't be set to NaN with ZINCRBY", func(t *testing.T) {
+		require.Contains(t, rdb.ZAdd(ctx, "myzset", redis.Z{Score: math.NaN(), Member: "abc"}).Err(), "float")
+	})
+
+	t.Run("ZINCRBY calls leading to NaN result in error", func(t *testing.T) {
+		rdb.ZIncrBy(ctx, "myzset", math.Inf(1), "abc")
+		util.ErrorRegexp(t, rdb.ZIncrBy(ctx, "myzset", math.Inf(-1), "abc").Err(), ".*NaN.*")
+	})
+
+	t.Run("ZADD - Variadic version base case", func(t *testing.T) {
+		rdb.Del(ctx, "myzset")
+		require.Equal(t, int64(3), rdb.ZAdd(ctx, "myzset", redis.Z{Score: 10, Member: "a"}, redis.Z{Score: 20, Member: "b"}, redis.Z{Score: 30, Member: "c"}).Val())
+		require.Equal(t, []redis.Z{{10, "a"}, {20, "b"}, {30, "c"}}, rdb.ZRangeWithScores(ctx, "myzset", 0, -1).Val())
+	})
+
+	t.Run("ZADD - Return value is the number of actually added items", func(t *testing.T) {
+		require.Equal(t, int64(1), rdb.ZAdd(ctx, "myzset", redis.Z{Score: 5, Member: "x"}, redis.Z{Score: 20, Member: "b"}, redis.Z{Score: 30, Member: "c"}).Val())
+		require.Equal(t, []redis.Z{{5, "x"}, {10, "a"}, {20, "b"}, {30, "c"}}, rdb.ZRangeWithScores(ctx, "myzset", 0, -1).Val())
+	})
+
+	t.Run("ZADD - Variadic version will raise error on missing arg", func(t *testing.T) {
+		rdb.Del(ctx, "myzset")
+		util.ErrorRegexp(t, rdb.Do(ctx, "zadd", "myzset", 10, "a", 20, "b", 30, "c", 40).Err(), ".*syntax.*")
+	})
+
+	t.Run("ZINCRBY does not work variadic even if shares ZADD implementation", func(t *testing.T) {
+		rdb.Del(ctx, "myzset")
+		util.ErrorRegexp(t, rdb.Do(ctx, "zincrby", "myzset", 10, "a", 20, "b", 30, "c").Err(), ".*ERR.*wrong.*number.*arg.*")
+	})
+
+	t.Run(fmt.Sprintf("ZCARD basics - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "ztmp")
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 10, Member: "a"}, redis.Z{Score: 20, Member: "b"}, redis.Z{Score: 30, Member: "c"})
+		require.Equal(t, int64(3), rdb.ZCard(ctx, "ztmp").Val())
+		require.Equal(t, int64(0), rdb.ZCard(ctx, "zdoesntexist").Val())
+	})
+
+	t.Run("ZREM removes key after last element is removed", func(t *testing.T) {
+		rdb.Del(ctx, "ztmp")
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 10, Member: "x"}, redis.Z{Score: 20, Member: "y"})
+		require.Equal(t, int64(1), rdb.Exists(ctx, "ztmp").Val())
+		require.Equal(t, int64(0), rdb.ZRem(ctx, "ztmp", "z").Val())
+		require.Equal(t, int64(1), rdb.ZRem(ctx, "ztmp", "y").Val())
+		require.Equal(t, int64(1), rdb.ZRem(ctx, "ztmp", "x").Val())
+		require.Equal(t, int64(0), rdb.Exists(ctx, "ztmp").Val())
+	})
+
+	t.Run("ZREM variadic version", func(t *testing.T) {
+		rdb.Del(ctx, "ztmp")
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 10, Member: "a"}, redis.Z{Score: 20, Member: "b"}, redis.Z{Score: 30, Member: "c"})
+		require.Equal(t, int64(2), rdb.ZRem(ctx, "ztmp", []string{"x", "y", "a", "b", "k"}).Val())
+		require.Equal(t, int64(0), rdb.ZRem(ctx, "ztmp", []string{"foo", "bar"}).Val())
+		require.Equal(t, int64(1), rdb.ZRem(ctx, "ztmp", []string{"c"}).Val())
+		require.Equal(t, int64(0), rdb.Exists(ctx, "ztmp").Val())
+	})
+
+	t.Run("ZREM variadic version -- remove elements after key deletion", func(t *testing.T) {
+		rdb.Del(ctx, "ztmp")
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 10, Member: "a"}, redis.Z{Score: 20, Member: "b"}, redis.Z{Score: 30, Member: "c"})
+		require.Equal(t, int64(3), rdb.ZRem(ctx, "ztmp", []string{"a", "b", "c", "d", "e", "f", "g"}).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZRANGE basics - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "ztmp")
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 1, Member: "a"})
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 2, Member: "b"})
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 3, Member: "c"})
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 4, Member: "d"})
+
+		require.Equal(t, []string{"a", "b", "c", "d"}, rdb.ZRange(ctx, "ztmp", 0, -1).Val())
+		require.Equal(t, []string{"a", "b", "c"}, rdb.ZRange(ctx, "ztmp", 0, -2).Val())
+		require.Equal(t, []string{"b", "c", "d"}, rdb.ZRange(ctx, "ztmp", 1, -1).Val())
+		require.Equal(t, []string{"b", "c"}, rdb.ZRange(ctx, "ztmp", 1, -2).Val())
+		require.Equal(t, []string{"c", "d"}, rdb.ZRange(ctx, "ztmp", -2, -1).Val())
+		require.Equal(t, []string{"c"}, rdb.ZRange(ctx, "ztmp", -2, -2).Val())
+
+		// out of range start index
+		require.Equal(t, []string{"a", "b", "c"}, rdb.ZRange(ctx, "ztmp", -5, 2).Val())
+		require.Equal(t, []string{"a", "b"}, rdb.ZRange(ctx, "ztmp", -5, 1).Val())
+		require.Equal(t, []string{}, rdb.ZRange(ctx, "ztmp", 5, -1).Val())
+		require.Equal(t, []string{}, rdb.ZRange(ctx, "ztmp", 5, -2).Val())
+
+		// out of range end index
+		require.Equal(t, []string{"a", "b", "c", "d"}, rdb.ZRange(ctx, "ztmp", 0, 5).Val())
+		require.Equal(t, []string{"b", "c", "d"}, rdb.ZRange(ctx, "ztmp", 1, 5).Val())
+		require.Equal(t, []string{}, rdb.ZRange(ctx, "ztmp", 0, -5).Val())
+		require.Equal(t, []string{}, rdb.ZRange(ctx, "ztmp", 1, -5).Val())
+
+		// withscores
+		require.Equal(t, []redis.Z{
+			{1, "a"},
+			{2, "b"},
+			{3, "c"},
+			{4, "d"},
+		}, rdb.ZRangeWithScores(ctx, "ztmp", 0, -1).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZREVRANGE basics - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "ztmp")
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 1, Member: "a"})
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 2, Member: "b"})
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 3, Member: "c"})
+		rdb.ZAdd(ctx, "ztmp", redis.Z{Score: 4, Member: "d"})
+
+		require.Equal(t, []string{"d", "c", "b", "a"}, rdb.ZRevRange(ctx, "ztmp", 0, -1).Val())
+		require.Equal(t, []string{"d", "c", "b"}, rdb.ZRevRange(ctx, "ztmp", 0, -2).Val())
+		require.Equal(t, []string{"c", "b", "a"}, rdb.ZRevRange(ctx, "ztmp", 1, -1).Val())
+		require.Equal(t, []string{"c", "b"}, rdb.ZRevRange(ctx, "ztmp", 1, -2).Val())
+		require.Equal(t, []string{"b", "a"}, rdb.ZRevRange(ctx, "ztmp", -2, -1).Val())
+		require.Equal(t, []string{"b"}, rdb.ZRevRange(ctx, "ztmp", -2, -2).Val())
+
+		// out of range start index
+		require.Equal(t, []string{"d", "c", "b"}, rdb.ZRevRange(ctx, "ztmp", -5, 2).Val())
+		require.Equal(t, []string{"d", "c"}, rdb.ZRevRange(ctx, "ztmp", -5, 1).Val())
+		require.Equal(t, []string{}, rdb.ZRevRange(ctx, "ztmp", 5, -1).Val())
+		require.Equal(t, []string{}, rdb.ZRevRange(ctx, "ztmp", 5, -2).Val())
+
+		// out of range end index
+		require.Equal(t, []string{"d", "c", "b", "a"}, rdb.ZRevRange(ctx, "ztmp", 0, 5).Val())
+		require.Equal(t, []string{"c", "b", "a"}, rdb.ZRevRange(ctx, "ztmp", 1, 5).Val())
+		require.Equal(t, []string{}, rdb.ZRevRange(ctx, "ztmp", 0, -5).Val())
+		require.Equal(t, []string{}, rdb.ZRevRange(ctx, "ztmp", 1, -5).Val())
+
+		// withscores
+		require.Equal(t, []redis.Z{
+			{4, "d"},
+			{3, "c"},
+			{2, "b"},
+			{1, "a"},
+		}, rdb.ZRevRangeWithScores(ctx, "ztmp", 0, -1).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZRANK/ZREVRANK basics - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "zranktmp")
+		rdb.ZAdd(ctx, "zranktmp", redis.Z{Score: 10, Member: "x"})
+		rdb.ZAdd(ctx, "zranktmp", redis.Z{Score: 20, Member: "y"})
+		rdb.ZAdd(ctx, "zranktmp", redis.Z{Score: 30, Member: "z"})
+		require.Equal(t, int64(0), rdb.ZRank(ctx, "zranktmp", "x").Val())
+		require.Equal(t, int64(1), rdb.ZRank(ctx, "zranktmp", "y").Val())
+		require.Equal(t, int64(2), rdb.ZRank(ctx, "zranktmp", "z").Val())
+		require.Equal(t, int64(0), rdb.ZRank(ctx, "zranktmp", "foo").Val())
+		require.Equal(t, int64(2), rdb.ZRevRank(ctx, "zranktmp", "x").Val())
+		require.Equal(t, int64(1), rdb.ZRevRank(ctx, "zranktmp", "y").Val())
+		require.Equal(t, int64(0), rdb.ZRevRank(ctx, "zranktmp", "z").Val())
+		require.Equal(t, int64(0), rdb.ZRevRank(ctx, "zranktmp", "foo").Val())
+	})
+
+	t.Run(fmt.Sprintf("ZRANK - after deletion -%s", encoding), func(t *testing.T) {
+		rdb.ZRem(ctx, "zranktmp", "y")
+		require.Equal(t, int64(0), rdb.ZRank(ctx, "zranktmp", "x").Val())
+		require.Equal(t, int64(1), rdb.ZRank(ctx, "zranktmp", "z").Val())
+	})
+
+	t.Run(fmt.Sprintf("ZINCRBY - can create a new sorted set - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "zset")
+		rdb.ZIncrBy(ctx, "zset", 1, "foo")
+		require.Equal(t, []string{"foo"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+		require.Equal(t, float64(1), rdb.ZScore(ctx, "zset", "foo").Val())
+	})
+
+	t.Run(fmt.Sprintf("ZINCRBY - increment and decrement - %s", encoding), func(t *testing.T) {
+		rdb.ZIncrBy(ctx, "zset", 2, "foo")
+		rdb.ZIncrBy(ctx, "zset", 1, "bar")
+		require.Equal(t, []string{"bar", "foo"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+		rdb.ZIncrBy(ctx, "zset", 10, "bar")
+		rdb.ZIncrBy(ctx, "zset", -5, "foo")
+		rdb.ZIncrBy(ctx, "zset", -5, "bar")
+		require.Equal(t, []string{"foo", "bar"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+		require.Equal(t, float64(-2), rdb.ZScore(ctx, "zset", "foo").Val())
+		require.Equal(t, float64(6), rdb.ZScore(ctx, "zset", "bar").Val())
+	})
+
+	t.Run("ZINCRBY return value", func(t *testing.T) {
+		rdb.Del(ctx, "ztmp")
+		require.Equal(t, float64(1), rdb.ZIncrBy(ctx, "ztmp", 1.0, "x").Val())
+	})
+
+	t.Run("ZRANGEBYSCORE/ZREVRANGEBYSCORE/ZCOUNT basics", func(t *testing.T) {
+		createDefaultZset(rdb, ctx)
+
+		// inclusive range
+		require.Equal(t, []string{"a", "b", "c"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "-inf", Max: "2"}).Val())
+		require.Equal(t, []string{"b", "c", "d"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "3"}).Val())
+		require.Equal(t, []string{"d", "e", "f"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "3", Max: "6"}).Val())
+		require.Equal(t, []string{"e", "f", "g"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "4", Max: "+inf"}).Val())
+		require.Equal(t, []string{"c", "b", "a"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "2", Min: "-inf"}).Val())
+		require.Equal(t, []string{"d", "c", "b"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "3", Min: "0"}).Val())
+		require.Equal(t, []string{"f", "e", "d"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "6", Min: "3"}).Val())
+		require.Equal(t, []string{"g", "f", "e"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "+inf", Min: "4"}).Val())
+		require.Equal(t, int64(3), rdb.ZCount(ctx, "zset", "0", "3").Val())
+
+		// exclusive range
+		require.Equal(t, []string{"b"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "(-inf", Max: "(2"}).Val())
+		require.Equal(t, []string{"b", "c"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "(0", Max: "(3"}).Val())
+		require.Equal(t, []string{"e", "f"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "(3", Max: "(6"}).Val())
+		require.Equal(t, []string{"f"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "(4", Max: "(+inf"}).Val())
+		require.Equal(t, []string{"b"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "(2", Min: "(-inf"}).Val())
+		require.Equal(t, []string{"c", "b"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "(3", Min: "(0"}).Val())
+		require.Equal(t, []string{"f", "e"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "(6", Min: "(3"}).Val())
+		require.Equal(t, []string{"f"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "(+inf", Min: "(4"}).Val())
+		require.Equal(t, int64(2), rdb.ZCount(ctx, "zset", "(0", "(3").Val())
+
+		// test empty ranges
+		rdb.ZRem(ctx, "zset", "a")
+		rdb.ZRem(ctx, "zset", "g")
+
+		// inclusive range
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "4", Max: "2"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "6", Max: "+inf"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "-inf", Max: "-6"}).Val())
+		require.Equal(t, []string{}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "+inf", Min: "6"}).Val())
+		require.Equal(t, []string{}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "-6", Min: "-inf"}).Val())
+
+		// exclusive range
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "(4", Max: "(2"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "2", Max: "(2"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "(2", Max: "2"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "(6", Max: "(+inf"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "(-inf", Max: "(-6"}).Val())
+		require.Equal(t, []string{}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "(+inf", Min: "(6"}).Val())
+		require.Equal(t, []string{}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Max: "(-6", Min: "(-inf"}).Val())
+
+		// empty inner range
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "2.4", Max: "2.6"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "(2.4", Max: "2.6"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "2.4", Max: "(2.6"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "(2.4", Max: "(2.6"}).Val())
+	})
+
+	t.Run("ZRANGEBYSCORE with WITHSCORES", func(t *testing.T) {
+		createDefaultZset(rdb, ctx)
+		require.Equal(t, []redis.Z{{1, "b"}, {2, "c"}, {3, "d"}}, rdb.ZRangeByScoreWithScores(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "3"}).Val())
+		require.Equal(t, []redis.Z{{3, "d"}, {2, "c"}, {1, "b"}}, rdb.ZRevRangeByScoreWithScores(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "3"}).Val())
+	})
+
+	t.Run("ZRANGEBYSCORE with LIMIT", func(t *testing.T) {
+		createDefaultZset(rdb, ctx)
+		require.Equal(t, []string{"b", "c"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "10", Offset: 0, Count: 2}).Val())
+		require.Equal(t, []string{"d", "e", "f"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "10", Offset: 2, Count: 3}).Val())
+		require.Equal(t, []string{"d", "e", "f"}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "10", Offset: 2, Count: 10}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "10", Offset: 20, Count: 10}).Val())
+		require.Equal(t, []string{"f", "e"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "10", Offset: 0, Count: 2}).Val())
+		require.Equal(t, []string{"d", "c", "b"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "10", Offset: 2, Count: 3}).Val())
+		require.Equal(t, []string{"d", "c", "b"}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "10", Offset: 2, Count: 10}).Val())
+		require.Equal(t, []string{}, rdb.ZRevRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "0", Max: "10", Offset: 20, Count: 10}).Val())
+	})
+
+	t.Run("ZRANGEBYSCORE with LIMIT and WITHSCORES", func(t *testing.T) {
+		createDefaultZset(rdb, ctx)
+		require.Equal(t, []redis.Z{{4, "e"}, {5, "f"}}, rdb.ZRangeByScoreWithScores(ctx, "zset", &redis.ZRangeBy{Min: "2", Max: "5", Offset: 2, Count: 3}).Val())
+		require.Equal(t, []redis.Z{{3, "d"}, {2, "c"}}, rdb.ZRevRangeByScoreWithScores(ctx, "zset", &redis.ZRangeBy{Min: "2", Max: "5", Offset: 2, Count: 3}).Val())
+	})
+
+	t.Run("ZRANGEBYSCORE with non-value min or max", func(t *testing.T) {
+		util.ErrorRegexp(t, rdb.ZRangeByScore(ctx, "fooz", &redis.ZRangeBy{Min: "str", Max: "1"}).Err(), ".*double.*")
+		util.ErrorRegexp(t, rdb.ZRangeByScore(ctx, "fooz", &redis.ZRangeBy{Min: "1", Max: "str"}).Err(), ".*double.*")
+		util.ErrorRegexp(t, rdb.ZRangeByScore(ctx, "fooz", &redis.ZRangeBy{Min: "1", Max: "NaN"}).Err(), ".*double.*")
+	})
+
+	t.Run("ZRANGEBYSCORE for min/max score with multi member", func(t *testing.T) {
+		zsetInt := []redis.Z{
+			{math.Inf(-1), "a"},
+			{math.Inf(-1), "b"},
+			{-1, "c"},
+			{2, "d"},
+			{3, "e"},
+			{math.Inf(1), "f"},
+			{math.Inf(1), "g"}}
+		createZset(rdb, ctx, "mzset", zsetInt)
+		require.Equal(t, zsetInt, rdb.ZRangeByScoreWithScores(ctx, "mzset", &redis.ZRangeBy{Min: "-inf", Max: "+inf"}).Val())
+		reverse(zsetInt)
+		require.Equal(t, zsetInt, rdb.ZRevRangeByScoreWithScores(ctx, "mzset", &redis.ZRangeBy{Min: "-inf", Max: "+inf"}).Val())
+
+		zsetDouble := []redis.Z{
+			{-1.004, "a"},
+			{-1.004, "b"},
+			{-1.002, "c"},
+			{1.002, "d"},
+			{1.004, "e"},
+			{1.004, "f"}}
+		createZset(rdb, ctx, "mzset", zsetDouble)
+		require.Equal(t, zsetDouble, rdb.ZRangeByScoreWithScores(ctx, "mzset", &redis.ZRangeBy{Min: "-inf", Max: "+inf"}).Val())
+		reverse(zsetDouble)
+		require.Equal(t, zsetDouble, rdb.ZRevRangeByScoreWithScores(ctx, "mzset", &redis.ZRangeBy{Min: "-inf", Max: "+inf"}).Val())
+	})
+
+	t.Run("ZRANGEBYLEX/ZREVRANGEBYLEX/ZLEXCOUNT basics", func(t *testing.T) {
+		createDefaultLexZset(rdb, ctx)
+
+		// inclusive range
+		require.Equal(t, []string{"alpha", "bar", "cool"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "-", Max: "[cool"}).Val())
+		require.Equal(t, []string{"bar", "cool", "down"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[bar", Max: "[down"}).Val())
+		require.Equal(t, []string{"great", "hill", "omega"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[g", Max: "+"}).Val())
+		require.Equal(t, []string{"cool", "bar", "alpha"}, rdb.ZRevRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "-", Max: "[cool"}).Val())
+		require.Equal(t, []string{"down", "cool", "bar"}, rdb.ZRevRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[bar", Max: "[down"}).Val())
+		require.Equal(t, []string{"omega", "hill", "great", "foo", "elephant", "down"}, rdb.ZRevRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[d", Max: "+"}).Val())
+
+		// exclusive range
+		require.Equal(t, []string{"alpha", "bar"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "-", Max: "(cool"}).Val())
+		require.Equal(t, []string{"cool"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "(bar", Max: "(down"}).Val())
+		require.Equal(t, []string{"hill", "omega"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "(great", Max: "+"}).Val())
+		require.Equal(t, []string{"bar", "alpha"}, rdb.ZRevRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "-", Max: "(cool"}).Val())
+		require.Equal(t, []string{"cool"}, rdb.ZRevRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "(bar", Max: "(down"}).Val())
+		require.Equal(t, []string{"omega", "hill"}, rdb.ZRevRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "(great", Max: "+"}).Val())
+
+		// inclusive and exclusive
+		require.Equal(t, []string{}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "(az", Max: "(b"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "(z", Max: "+"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "-", Max: "[aaaa"}).Val())
+		require.Equal(t, []string{}, rdb.ZRevRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[elez", Max: "[elex"}).Val())
+		require.Equal(t, []string{}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "(hill", Max: "(omega"}).Val())
+	})
+
+	t.Run("ZRANGEBYLEX with LIMIT", func(t *testing.T) {
+		createDefaultLexZset(rdb, ctx)
+		require.Equal(t, []string{"alpha", "bar"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "-", Max: "[cool", Offset: 0, Count: 2}).Val())
+		require.Equal(t, []string{"bar", "cool"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "-", Max: "[cool", Offset: 1, Count: 2}).Val())
+		require.Equal(t, []interface{}{}, rdb.Do(ctx, "zrangebylex", "zset", "[bar", "[down", "limit", "0", "0").Val())
+		require.Equal(t, []string{}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[bar", Max: "[down", Offset: 2, Count: 0}).Val())
+		require.Equal(t, []string{"bar"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[bar", Max: "[down", Offset: 0, Count: 1}).Val())
+		require.Equal(t, []string{"cool"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[bar", Max: "[down", Offset: 1, Count: 1}).Val())
+		require.Equal(t, []string{"bar", "cool", "down"}, rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[bar", Max: "[down", Offset: 0, Count: 100}).Val())
+		require.Equal(t, []string{"omega", "hill", "great", "foo", "elephant"}, rdb.ZRevRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[d", Max: "+", Offset: 0, Count: 5}).Val())
+		require.Equal(t, []string{"omega", "hill", "great", "foo"}, rdb.ZRevRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: "[d", Max: "+", Offset: 0, Count: 4}).Val())
+	})
+
+	t.Run("ZRANGEBYLEX with invalid lex range specifiers", func(t *testing.T) {
+		util.ErrorRegexp(t, rdb.ZRangeByLex(ctx, "fooz", &redis.ZRangeBy{Min: "foo", Max: "bar"}).Err(), ".*illegal.*")
+		util.ErrorRegexp(t, rdb.ZRangeByLex(ctx, "fooz", &redis.ZRangeBy{Min: "[foo", Max: "bar"}).Err(), ".*illegal.*")
+		util.ErrorRegexp(t, rdb.ZRangeByLex(ctx, "fooz", &redis.ZRangeBy{Min: "foo", Max: "[bar"}).Err(), ".*illegal.*")
+		util.ErrorRegexp(t, rdb.ZRangeByLex(ctx, "fooz", &redis.ZRangeBy{Min: "+x", Max: "[bar"}).Err(), ".*illegal.*")
+		util.ErrorRegexp(t, rdb.ZRangeByLex(ctx, "fooz", &redis.ZRangeBy{Min: "-x", Max: "[bar"}).Err(), ".*illegal.*")
+	})
+
+	t.Run("ZREMRANGEBYSCORE basics", func(t *testing.T) {
+		remrangebyscore := func(min, max string) int64 {
+			createZset(rdb, ctx, "zset", []redis.Z{{1, "a"}, {2, "b"}, {3, "c"},
+				{4, "d"}, {5, "e"}})
+			require.Equal(t, int64(1), rdb.Exists(ctx, "zset").Val())
+			return rdb.ZRemRangeByScore(ctx, "zset", min, max).Val()
+		}
+
+		// inner range
+		require.Equal(t, int64(3), remrangebyscore("2", "4"))
+		require.Equal(t, []string{"a", "e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// start underflow
+		require.Equal(t, int64(1), remrangebyscore("-10", "1"))
+		require.Equal(t, []string{"b", "c", "d", "e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// end overflow
+		require.Equal(t, int64(1), remrangebyscore("5", "10"))
+		require.Equal(t, []string{"a", "b", "c", "d"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// switch min and max
+		require.Equal(t, int64(0), remrangebyscore("4", "2"))
+		require.Equal(t, []string{"a", "b", "c", "d", "e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// -inf to mid
+		require.Equal(t, int64(3), remrangebyscore("-inf", "3"))
+		require.Equal(t, []string{"d", "e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// mid to +inf
+		require.Equal(t, int64(3), remrangebyscore("3", "+inf"))
+		require.Equal(t, []string{"a", "b"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// -inf to +inf
+		require.Equal(t, int64(5), remrangebyscore("-inf", "+inf"))
+		require.Equal(t, []string{}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// exclusive min
+		require.Equal(t, int64(4), remrangebyscore("(1", "5"))
+		require.Equal(t, []string{"a"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+		require.Equal(t, int64(3), remrangebyscore("(2", "5"))
+		require.Equal(t, []string{"a", "b"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// exclusive max
+		require.Equal(t, int64(4), remrangebyscore("1", "(5"))
+		require.Equal(t, []string{"e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+		require.Equal(t, int64(3), remrangebyscore("1", "(4"))
+		require.Equal(t, []string{"d", "e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// exclusive min and max
+		require.Equal(t, int64(3), remrangebyscore("(1", "(5"))
+		require.Equal(t, []string{"a", "e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// destroy when empty
+		require.Equal(t, int64(5), remrangebyscore("1", "5"))
+		require.Equal(t, int64(0), rdb.Exists(ctx, "zset").Val())
+	})
+
+	t.Run("ZREMRANGEBYSCORE with non-value min or max", func(t *testing.T) {
+		util.ErrorRegexp(t, rdb.ZRemRangeByScore(ctx, "fooz", "str", "1").Err(), ".*double.*")
+		util.ErrorRegexp(t, rdb.ZRemRangeByScore(ctx, "fooz", "1", "str").Err(), ".*double.*")
+		util.ErrorRegexp(t, rdb.ZRemRangeByScore(ctx, "fooz", "1", "NaN").Err(), ".*double.*")
+	})
+
+	t.Run("ZREMRANGEBYRANK basics", func(t *testing.T) {
+		remrangebyrank := func(min, max int64) int64 {
+			createZset(rdb, ctx, "zset", []redis.Z{{1, "a"}, {2, "b"}, {3, "c"},
+				{4, "d"}, {5, "e"}})
+			require.Equal(t, int64(1), rdb.Exists(ctx, "zset").Val())
+			return rdb.ZRemRangeByRank(ctx, "zset", min, max).Val()
+		}
+
+		// inner range
+		require.Equal(t, int64(3), remrangebyrank(1, 3))
+		require.Equal(t, []string{"a", "e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// start underflow
+		require.Equal(t, int64(1), remrangebyrank(-10, 0))
+		require.Equal(t, []string{"b", "c", "d", "e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// start overflow
+		require.Equal(t, int64(0), remrangebyrank(10, -1))
+		require.Equal(t, []string{"a", "b", "c", "d", "e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// end underflow
+		require.Equal(t, int64(0), remrangebyrank(0, -10))
+		require.Equal(t, []string{"a", "b", "c", "d", "e"}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// end overflow
+		require.Equal(t, int64(5), remrangebyrank(0, 10))
+		require.Equal(t, []string{}, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+		// destroy when empty
+		require.Equal(t, int64(5), remrangebyrank(0, 4))
+		require.Equal(t, int64(0), rdb.Exists(ctx, "zset").Val())
+	})
+
+	t.Run(fmt.Sprintf("ZUNIONSTORE against non-existing key doesn't set destination - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "zseta")
+		require.Equal(t, int64(0), rdb.ZUnionStore(ctx, "dst_key", &redis.ZStore{Keys: []string{"zseta"}}).Val())
+		require.Equal(t, int64(0), rdb.Exists(ctx, "dst_key").Val())
+	})
+
+	t.Run(fmt.Sprintf("ZUNIONSTORE with empty set - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "zseta", "zsetb")
+		rdb.ZAdd(ctx, "zseta", redis.Z{Score: 1, Member: "a"})
+		rdb.ZAdd(ctx, "zsetb", redis.Z{Score: 2, Member: "b"})
+		rdb.ZUnionStore(ctx, "zsetc", &redis.ZStore{Keys: []string{"zseta", "zsetb"}})
+		require.Equal(t, []redis.Z{{1, "a"}, {2, "b"}}, rdb.ZRangeWithScores(ctx, "zsetc", 0, -1).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZUNIONSTORE basics - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "zseta", "zsetb", "zsetc")
+		rdb.ZAdd(ctx, "zseta", redis.Z{Score: 1, Member: "a"})
+		rdb.ZAdd(ctx, "zseta", redis.Z{Score: 2, Member: "b"})
+		rdb.ZAdd(ctx, "zseta", redis.Z{Score: 3, Member: "c"})
+		rdb.ZAdd(ctx, "zsetb", redis.Z{Score: 1, Member: "b"})
+		rdb.ZAdd(ctx, "zsetb", redis.Z{Score: 2, Member: "c"})
+		rdb.ZAdd(ctx, "zsetb", redis.Z{Score: 3, Member: "d"})
+		require.Equal(t, int64(4), rdb.ZUnionStore(ctx, "zsetc", &redis.ZStore{Keys: []string{"zseta", "zsetb"}}).Val())
+		require.Equal(t, []redis.Z{{1, "a"}, {3, "b"}, {3, "d"}, {5, "c"}}, rdb.ZRangeWithScores(ctx, "zsetc", 0, -1).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZUNIONSTORE with weights - %s", encoding), func(t *testing.T) {
+		require.Equal(t, int64(4), rdb.ZUnionStore(ctx, "zsetc", &redis.ZStore{Keys: []string{"zseta", "zsetb"}, Weights: []float64{2, 3}}).Val())
+		require.Equal(t, []redis.Z{{2, "a"}, {7, "b"}, {9, "d"}, {12, "c"}}, rdb.ZRangeWithScores(ctx, "zsetc", 0, -1).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZUNIONSTORE with AGGREGATE MIN - %s", encoding), func(t *testing.T) {
+		require.Equal(t, int64(4), rdb.ZUnionStore(ctx, "zsetc", &redis.ZStore{Keys: []string{"zseta", "zsetb"}, Aggregate: "min"}).Val())
+		require.Equal(t, []redis.Z{{1, "a"}, {1, "b"}, {2, "c"}, {3, "d"}}, rdb.ZRangeWithScores(ctx, "zsetc", 0, -1).Val())
+
+	})
+
+	t.Run(fmt.Sprintf("ZUNIONSTORE with AGGREGATE MAX - %s", encoding), func(t *testing.T) {
+		require.Equal(t, int64(4), rdb.ZUnionStore(ctx, "zsetc", &redis.ZStore{Keys: []string{"zseta", "zsetb"}, Aggregate: "max"}).Val())
+		require.Equal(t, []redis.Z{{1, "a"}, {2, "b"}, {3, "c"}, {3, "d"}}, rdb.ZRangeWithScores(ctx, "zsetc", 0, -1).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZINTERSTORE basics - %s", encoding), func(t *testing.T) {
+		require.Equal(t, int64(2), rdb.ZInterStore(ctx, "zsetc", &redis.ZStore{Keys: []string{"zseta", "zsetb"}}).Val())
+		require.Equal(t, []redis.Z{{3, "b"}, {5, "c"}}, rdb.ZRangeWithScores(ctx, "zsetc", 0, -1).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZINTERSTORE with weights - %s", encoding), func(t *testing.T) {
+		require.Equal(t, int64(2), rdb.ZInterStore(ctx, "zsetc", &redis.ZStore{Keys: []string{"zseta", "zsetb"}, Weights: []float64{2, 3}}).Val())
+		require.Equal(t, []redis.Z{{7, "b"}, {12, "c"}}, rdb.ZRangeWithScores(ctx, "zsetc", 0, -1).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZINTERSTORE with AGGREGATE MIN - %s", encoding), func(t *testing.T) {
+		require.Equal(t, int64(2), rdb.ZInterStore(ctx, "zsetc", &redis.ZStore{Keys: []string{"zseta", "zsetb"}, Aggregate: "min"}).Val())
+		require.Equal(t, []redis.Z{{1, "b"}, {2, "c"}}, rdb.ZRangeWithScores(ctx, "zsetc", 0, -1).Val())
+	})
+
+	t.Run(fmt.Sprintf("ZINTERSTORE with AGGREGATE MAX - %s", encoding), func(t *testing.T) {
+		require.Equal(t, int64(2), rdb.ZInterStore(ctx, "zsetc", &redis.ZStore{Keys: []string{"zseta", "zsetb"}, Aggregate: "max"}).Val())
+		require.Equal(t, []redis.Z{{2, "b"}, {3, "c"}}, rdb.ZRangeWithScores(ctx, "zsetc", 0, -1).Val())
+	})
+
+	for i, cmd := range []func(ctx context.Context, dest string, store *redis.ZStore) *redis.IntCmd{rdb.ZInterStore, rdb.ZUnionStore} {
+		var funcName string
+		switch i {
+		case 0:
+			funcName = "ZINTERSTORE"
+		case 1:
+			funcName = "ZUNIONSTORE"
+		}
+
+		t.Run(fmt.Sprintf("%s with +inf/-inf scores - %s", funcName, encoding), func(t *testing.T) {
+			rdb.Del(ctx, "zsetinf1", "zsetinf2")
+
+			rdb.ZAdd(ctx, "zsetinf1", redis.Z{Score: math.Inf(1), Member: "key"})
+			rdb.ZAdd(ctx, "zsetinf2", redis.Z{Score: math.Inf(1), Member: "key"})
+			cmd(ctx, "zsetinf3", &redis.ZStore{Keys: []string{"zsetinf1", "zsetinf2"}})
+			require.Equal(t, math.Inf(1), rdb.ZScore(ctx, "zsetinf3", "key").Val())
+
+			rdb.ZAdd(ctx, "zsetinf1", redis.Z{Score: math.Inf(-1), Member: "key"})
+			rdb.ZAdd(ctx, "zsetinf2", redis.Z{Score: math.Inf(1), Member: "key"})
+			cmd(ctx, "zsetinf3", &redis.ZStore{Keys: []string{"zsetinf1", "zsetinf2"}})
+			require.Equal(t, float64(0), rdb.ZScore(ctx, "zsetinf3", "key").Val())
+
+			rdb.ZAdd(ctx, "zsetinf1", redis.Z{Score: math.Inf(1), Member: "key"})
+			rdb.ZAdd(ctx, "zsetinf2", redis.Z{Score: math.Inf(-1), Member: "key"})
+			cmd(ctx, "zsetinf3", &redis.ZStore{Keys: []string{"zsetinf1", "zsetinf2"}})
+			require.Equal(t, float64(0), rdb.ZScore(ctx, "zsetinf3", "key").Val())
+
+			rdb.ZAdd(ctx, "zsetinf1", redis.Z{Score: math.Inf(-1), Member: "key"})
+			rdb.ZAdd(ctx, "zsetinf2", redis.Z{Score: math.Inf(-1), Member: "key"})
+			cmd(ctx, "zsetinf3", &redis.ZStore{Keys: []string{"zsetinf1", "zsetinf2"}})
+			require.Equal(t, math.Inf(-1), rdb.ZScore(ctx, "zsetinf3", "key").Val())
+		})
+
+		t.Run(fmt.Sprintf("%s with NaN weights - %s", funcName, encoding), func(t *testing.T) {
+			rdb.Del(ctx, "zsetinf1", "zsetinf2")
+			rdb.ZAdd(ctx, "zsetinf1", redis.Z{Score: 1.0, Member: "key"})
+			rdb.ZAdd(ctx, "zsetinf2", redis.Z{Score: 1.0, Member: "key"})
+			util.ErrorRegexp(t, cmd(ctx, "zsetinf3", &redis.ZStore{
+				Keys:    []string{"zsetinf1", "zsetinf2"},
+				Weights: []float64{math.NaN(), math.NaN()}},
+			).Err(), ".*weight.*not.*double.*")
+		})
+	}
+}
+
+func stressTests(t *testing.T, rdb *redis.Client, ctx context.Context, encoding string) {
+	var elements int
+	if encoding == "ziplist" {
+		elements = 128
+	} else if encoding == "skiplist" {
+		elements = 100
+	} else {
+		fmt.Println("Unknown sorted set encoding")
+		return
+	}
+	t.Run(fmt.Sprintf("ZSCORE - %s", encoding), func(t *testing.T) {
+		rdb.Del(ctx, "zscoretest")
+		aux := make([]float64, 0)
+		for i := 0; i < elements; i++ {
+			score := rand.Float64()
+			aux = append(aux, score)
+			rdb.ZAdd(ctx, "zscoretest", redis.Z{Score: score, Member: strconv.Itoa(i)})
+		}
+		for i := 0; i < elements; i++ {
+			require.Equal(t, aux[i], rdb.ZScore(ctx, "zscoretest", strconv.Itoa(i)).Val())
+		}
+	})
+
+	t.Run(fmt.Sprintf("ZSET sorting stresser - %s", encoding), func(t *testing.T) {
+		delta := 0
+		for test := 0; test < 2; test++ {
+			auxArray := make(map[string]float64)
+			auxList := make([]redis.Z, 0)
+			rdb.Del(ctx, "myzset")
+			var score float64
+			for i := 0; i < elements; i++ {
+				if test == 0 {
+					score = rand.Float64()
+				} else {
+					score = float64(rand.Intn(10))
+				}
+				auxArray[strconv.Itoa(i)] = score
+				rdb.ZAdd(ctx, "myzset", redis.Z{Score: score, Member: strconv.Itoa(i)})
+				if rand.Float64() < 0.2 {
+					j := rand.Intn(1000)
+					if test == 0 {
+						score = rand.Float64()
+					} else {
+						score = float64(rand.Intn(10))
+
+					}
+					auxArray[strconv.Itoa(j)] = score
+					rdb.ZAdd(ctx, "myzset", redis.Z{Score: score, Member: strconv.Itoa(j)})
+				}
+			}
+			for i, s := range auxArray {
+				auxList = append(auxList, redis.Z{Score: s, Member: i})
+			}
+			sort.Slice(auxList, func(i, j int) bool {
+				if auxList[i].Score < auxList[j].Score {
+					return true
+				} else if auxList[i].Score > auxList[j].Score {
+					return false
+				} else {
+					if strings.Compare(auxList[i].Member.(string), auxList[j].Member.(string)) == 1 {
+						return false
+					} else {
+						return true
+					}
+				}
+			})
+			var aux []string
+			for _, z := range auxList {
+				aux = append(aux, z.Member.(string))
+			}
+			fromRedis := rdb.ZRange(ctx, "myzset", 0, -1).Val()
+			for i := 0; i < len(fromRedis); i++ {
+				if aux[i] != fromRedis[i] {
+					delta++
+				}
+			}
+			require.Equal(t, 0, delta)
+		}
+	})
+
+	t.Run(fmt.Sprintf("ZRANGEBYSCORE fuzzy test, 100 ranges in %d element sorted set - %s", elements, encoding), func(t *testing.T) {
+		rdb.Del(ctx, "zset")
+		for i := 0; i < elements; i++ {
+			rdb.ZAdd(ctx, "zset", redis.Z{Score: rand.Float64(), Member: strconv.Itoa(i)})
+		}
+
+		for i := 0; i < 100; i++ {
+			min, max := rand.Float64(), rand.Float64()
+			min, max = math.Min(min, max), math.Max(min, max)
+			low := rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "-inf", Max: fmt.Sprintf("%f", min)}).Val()
+			ok := rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: fmt.Sprintf("%f", min), Max: fmt.Sprintf("%f", max)}).Val()
+			high := rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: fmt.Sprintf("%f", max), Max: "+inf"}).Val()
+			lowEx := rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: "-inf", Max: fmt.Sprintf("(%f", min)}).Val()
+			okEx := rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: fmt.Sprintf("(%f", min), Max: fmt.Sprintf("(%f", max)}).Val()
+			highEx := rdb.ZRangeByScore(ctx, "zset", &redis.ZRangeBy{Min: fmt.Sprintf("(%f", max), Max: "+inf"}).Val()
+
+			require.Len(t, low, int(rdb.ZCount(ctx, "zset", "-inf", fmt.Sprintf("%f", min)).Val()))
+			require.Len(t, ok, int(rdb.ZCount(ctx, "zset", fmt.Sprintf("%f", min), fmt.Sprintf("%f", max)).Val()))
+			require.Len(t, high, int(rdb.ZCount(ctx, "zset", fmt.Sprintf("%f", max), "+inf").Val()))
+			require.Len(t, lowEx, int(rdb.ZCount(ctx, "zset", "-inf", fmt.Sprintf("(%f", min)).Val()))
+			require.Len(t, okEx, int(rdb.ZCount(ctx, "zset", fmt.Sprintf("(%f", min), fmt.Sprintf("(%f", max)).Val()))
+			require.Len(t, highEx, int(rdb.ZCount(ctx, "zset", fmt.Sprintf("(%f", max), "+inf").Val()))
+
+			for _, x := range low {
+				require.LessOrEqual(t, rdb.ZScore(ctx, "zset", x).Val(), min)
+			}
+			for _, x := range lowEx {
+				require.Less(t, rdb.ZScore(ctx, "zset", x).Val(), min)
+			}
+			for _, x := range ok {
+				util.BetweenValues(t, rdb.ZScore(ctx, "zset", x).Val(), min, max)
+			}
+			for _, x := range okEx {
+				util.BetweenValuesEx(t, rdb.ZScore(ctx, "zset", x).Val(), min, max)
+			}
+			for _, x := range high {
+				require.GreaterOrEqual(t, rdb.ZScore(ctx, "zset", x).Val(), min)
+			}
+			for _, x := range highEx {
+				require.Greater(t, rdb.ZScore(ctx, "zset", x).Val(), min)
+			}
+		}
+	})
+
+	t.Run(fmt.Sprintf("ZRANGEBYLEX fuzzy test, 100 ranges in %d element sorted set - %s", elements, encoding), func(t *testing.T) {
+		rdb.Del(ctx, "zset")
+
+		var lexSet []string
+		for i := 0; i < elements; i++ {
+			e := util.RandString(0, 30, util.Alpha)
+			lexSet = append(lexSet, e)
+			rdb.ZAdd(ctx, "zset", redis.Z{Member: e})
+		}
+		sort.Strings(lexSet)
+		lexSet = slices.Compact(lexSet)
+
+		for i := 0; i < 100; i++ {
+			min, max := util.RandString(0, 30, util.Alpha), util.RandString(0, 30, util.Alpha)
+			minInc, maxInc := util.RandomBool(), util.RandomBool()
+			cMin, cMax := "("+min, "("+max
+			if minInc {
+				cMin = "[" + min
+			}
+			if maxInc {
+				cMax = "[" + max
+			}
+			rev := util.RandomBool()
+
+			// make sure data is the same in both sides
+			require.Equal(t, lexSet, rdb.ZRange(ctx, "zset", 0, -1).Val())
+
+			var output []string
+			var outLen int64
+			if rev {
+				output = rdb.ZRevRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: cMax, Max: cMin}).Val()
+				outLen = rdb.ZLexCount(ctx, "zset", cMax, cMin).Val()
+			} else {
+				output = rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: cMin, Max: cMax}).Val()
+				outLen = rdb.ZLexCount(ctx, "zset", cMin, cMax).Val()
+			}
+
+			// compute the same output by programming
+			o := make([]string, 0)
+			c := lexSet
+			if (!rev && min > max) || (rev && max > min) {
+				// empty output when ranges are inverted
+			} else {
+				if rev {
+					c = rdb.ZRevRange(ctx, "zset", 0, -1).Val()
+					min, max, minInc, maxInc = max, min, maxInc, minInc
+				}
+
+				for _, e := range c {
+					if (minInc && e >= min || !minInc && e > min) && (maxInc && e <= max || !maxInc && e < max) {
+						o = append(o, e)
+					}
+				}
+			}
+			require.Equal(t, o, output)
+			require.Len(t, output, int(outLen))
+		}
+	})
+
+	t.Run(fmt.Sprintf("ZREMRANGEBYLEX fuzzy test, 100 ranges in %d element sorted set - %s", elements, encoding), func(t *testing.T) {
+		var lexSet []string
+		rdb.Del(ctx, "zset", "zsetcopy")
+		for i := 0; i < elements; i++ {
+			e := util.RandString(0, 30, util.Alpha)
+			lexSet = append(lexSet, e)
+			rdb.ZAdd(ctx, "zset", redis.Z{Member: e})
+		}
+		sort.Strings(lexSet)
+		lexSet = slices.Compact(lexSet)
+		for i := 0; i < 100; i++ {
+			rdb.ZUnionStore(ctx, "zsetcopy", &redis.ZStore{Keys: []string{"zset"}})
+			var lexSetCopy []string
+			lexSetCopy = append(lexSetCopy, lexSet...)
+			min, max := util.RandString(0, 30, util.Alpha), util.RandString(0, 30, util.Alpha)
+			minInc, maxInc := util.RandomBool(), util.RandomBool()
+			cMin, cMax := "("+min, "("+max
+			if minInc {
+				cMin = "[" + min
+			}
+			if maxInc {
+				cMax = "[" + max
+			}
+			require.Equal(t, lexSet, rdb.ZRange(ctx, "zset", 0, -1).Val())
+			toRem := rdb.ZRangeByLex(ctx, "zset", &redis.ZRangeBy{Min: cMin, Max: cMax}).Val()
+			toRemLen := rdb.ZLexCount(ctx, "zset", cMin, cMax).Val()
+			rdb.ZRemRangeByLex(ctx, "zsetcopy", cMin, cMax)
+			output := rdb.ZRange(ctx, "zsetcopy", 0, -1).Val()
+			if toRemLen > 0 {
+				var first, last int64
+				for idx, v := range lexSetCopy {
+					if v == toRem[0] {
+						first = int64(idx)
+					}
+				}
+				last = first + toRemLen - 1
+				lexSetCopy = append(lexSetCopy[:first], lexSetCopy[last+1:]...)
+			}
+			require.Equal(t, lexSetCopy, output)
+		}
+	})
+
+	t.Run(fmt.Sprintf("ZSETs skiplist implementation backlink consistency test - %s", encoding), func(t *testing.T) {
+		diff := 0
+		for i := 0; i < elements; i++ {
+			rdb.ZAdd(ctx, "zset", redis.Z{Score: rand.Float64(), Member: fmt.Sprintf("Element-%d", i)})
+			rdb.ZRem(ctx, "myzset", fmt.Sprintf("Element-%d", rand.Intn(elements)))
+		}
+		l1 := rdb.ZRange(ctx, "myzset", 0, -1).Val()
+		l2 := rdb.ZRevRange(ctx, "myzset", 0, -1).Val()
+		for j := 0; j < len(l1); j++ {
+			if l1[j] != l2[len(l1)-j-1] {
+				diff++
+			}
+		}
+		require.Equal(t, 0, diff)
+	})
+
+	t.Run(fmt.Sprintf("ZSETs ZRANK augmented skip list stress testing - %s", encoding), func(t *testing.T) {
+		var err error
+		rdb.Del(ctx, "myzset")
+		for k := 0; k < 2000; k++ {
+			i := k % elements
+			if rand.Float64() < 0.2 {
+				rdb.ZRem(ctx, "myzset", strconv.Itoa(i))
+			} else {
+				score := rand.Float64()
+				rdb.ZAdd(ctx, "myzset", redis.Z{Score: score, Member: strconv.Itoa(i)})
+			}
+			card := rdb.ZCard(ctx, "myzset").Val()
+			if card > 0 {
+				index := util.RandomInt(card)
+				ele := rdb.ZRange(ctx, "myzset", index, index).Val()[0]
+				rank := rdb.ZRank(ctx, "myzset", ele).Val()
+				if rank != index {
+					err = fmt.Errorf("%s RANK is wrong! (%d != %d)", ele, rank, index)
+					break
+				}
+			}
+		}
+		require.NoError(t, err)
+	})
+}
+
+func TestZset(t *testing.T) {
+	srv := util.StartServer(t, map[string]string{})
+	defer srv.Close()
+	ctx := context.Background()
+	rdb := srv.NewClient()
+	defer func() { require.NoError(t, rdb.Close()) }()
+
+	basicTests(t, rdb, ctx, "skiplist")
+
+	t.Run("ZUNIONSTORE regression, should not create NaN in scores", func(t *testing.T) {
+		rdb.ZAdd(ctx, "z", redis.Z{Score: math.Inf(-1), Member: "neginf"})
+		rdb.ZUnionStore(ctx, "out", &redis.ZStore{Keys: []string{"z"}, Weights: []float64{0}})
+		require.Equal(t, []redis.Z{{0, "neginf"}}, rdb.ZRangeWithScores(ctx, "out", 0, -1).Val())
+	})
+
+	t.Run("ZUNIONSTORE result is sorted", func(t *testing.T) {
+		rdb.Del(ctx, "one", "two", "dest")
+		var zset1 []redis.Z
+		var zset2 []redis.Z
+		for j := 0; j < 1000; j++ {
+			zset1 = append(zset1, redis.Z{Score: float64(util.RandomInt(1000)), Member: util.RandomValue()})
+			zset2 = append(zset2, redis.Z{Score: float64(util.RandomInt(1000)), Member: util.RandomValue()})
+		}
+		rdb.ZAdd(ctx, "one", zset1...)
+		rdb.ZAdd(ctx, "two", zset2...)
+		require.Greater(t, rdb.ZCard(ctx, "one").Val(), int64(100))
+		require.Greater(t, rdb.ZCard(ctx, "two").Val(), int64(100))
+		rdb.ZUnionStore(ctx, "dest", &redis.ZStore{Keys: []string{"one", "two"}})
+		oldScore := float64(0)
+		for _, z := range rdb.ZRangeWithScores(ctx, "dest", 0, -1).Val() {
+			require.GreaterOrEqual(t, z.Score, oldScore)
+			oldScore = z.Score
+		}
+	})
+
+	t.Run("ZSET commands don't accept the empty strings as valid score", func(t *testing.T) {
+		util.ErrorRegexp(t, rdb.Do(ctx, "zadd", "myzset", "", "abc").Err(), ".*not.*float.*")
+	})
+
+	stressTests(t, rdb, ctx, "skiplist")
+}
diff --git a/tests/gocase/util/assertions.go b/tests/gocase/util/assertions.go
index 32dccad..422f84c 100644
--- a/tests/gocase/util/assertions.go
+++ b/tests/gocase/util/assertions.go
@@ -31,11 +31,18 @@ func ErrorRegexp(t testing.TB, err error, rx interface{}, msgAndArgs ...interfac
 	require.Regexp(t, rx, err.Error(), msgAndArgs...)
 }
 
+// BetweenValues asserts start <= d <= end
 func BetweenValues[T constraints.Ordered](t testing.TB, d, start, end T, msgAndArgs ...interface{}) {
 	require.GreaterOrEqual(t, d, start, msgAndArgs...)
 	require.LessOrEqual(t, d, end, msgAndArgs...)
 }
 
+// BetweenValuesEx asserts start < d < end
+func BetweenValuesEx[T constraints.Ordered](t testing.TB, d, start, end T, msgAndArgs ...interface{}) {
+	require.Greater(t, d, start, msgAndArgs...)
+	require.Less(t, d, end, msgAndArgs...)
+}
+
 func RetryEventually(t testing.TB, condition func() bool, maxAttempts int, msgAndArgs ...interface{}) {
 	require.Greater(t, maxAttempts, 0, msgAndArgs...)
 	for i := 0; i < maxAttempts; i++ {
diff --git a/tests/gocase/util/random.go b/tests/gocase/util/random.go
index ad51d9a..0c290a6 100644
--- a/tests/gocase/util/random.go
+++ b/tests/gocase/util/random.go
@@ -45,6 +45,10 @@ func RandomInt(max int64) int64 {
 	return rand.Int63() % max
 }
 
+func RandomBool() bool {
+	return RandomInt(2) != 0
+}
+
 type RandStringType int
 
 const (
diff --git a/tests/tcl/tests/test_helper.tcl b/tests/tcl/tests/test_helper.tcl
index f28a7b5..a8b70e7 100644
--- a/tests/tcl/tests/test_helper.tcl
+++ b/tests/tcl/tests/test_helper.tcl
@@ -34,7 +34,6 @@ source tests/support/util.tcl
 
 set ::all_tests {
     unit/type/list
-    unit/type/zset
     unit/type/stream
     unit/geo
     integration/slotmigrate
diff --git a/tests/tcl/tests/unit/type/zset.tcl b/tests/tcl/tests/unit/type/zset.tcl
deleted file mode 100644
index 7c0ddb8..0000000
--- a/tests/tcl/tests/unit/type/zset.tcl
+++ /dev/null
@@ -1,1053 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-
-# Copyright (c) 2006-2020, Salvatore Sanfilippo
-# See bundled license file licenses/LICENSE.redis for details.
-
-# This file is copied and modified from the Redis project,
-# which started out as: https://github.com/redis/redis/blob/dbcc0a8/tests/unit/type/zset.tcl
-
-start_server {tags {"zset"}} {
-    proc create_zset {key items} {
-        r del $key
-        foreach {score entry} $items {
-            r zadd $key $score $entry
-        }
-    }
-
-    proc basics {encoding} {
-        test "Check encoding - $encoding" {
-            r del ztmp
-            r zadd ztmp 10 x
-            #assert_encoding $encoding ztmp
-        }
-
-        test "ZSET basic ZADD and score update - $encoding" {
-            r del ztmp
-            r zadd ztmp 10 x
-            r zadd ztmp 20 y
-            r zadd ztmp 30 z
-            assert_equal {x y z} [r zrange ztmp 0 -1]
-
-            r zadd ztmp 1 y
-            assert_equal {y x z} [r zrange ztmp 0 -1]
-        }
-
-        test "ZSET basic ZADD the same member with different scores - $encoding" {
-            r del ztmp
-            assert_equal 1 [r zadd ztmp 10 x 20 x]
-            assert_equal {x} [r zrange ztmp 0 -1]
-            assert_equal 20 [r zscore ztmp x]
-
-            assert_equal 2 [r zadd ztmp 30 x 40 y 50 z]
-            assert_equal {x y z} [r zrange ztmp 0 -1]
-            assert_equal 30 [r zscore ztmp x]
-        }
-
-        test "ZSET element can't be set to NaN with ZADD - $encoding" {
-            assert_error "*float*" {r zadd myzset nan abc}
-        }
-
-        test "ZSET element can't be set to NaN with ZINCRBY" {
-            assert_error "*float*" {r zadd myzset nan abc}
-        }
-
-        # test "ZADD with options syntax error with incomplete pair" {
-        #     r del ztmp
-        #     catch {r zadd ztmp xx 10 x 20} err
-        #     set err
-        # } {ERR*}
-
-        # test "ZADD XX option without key - $encoding" {
-        #     r del ztmp
-        #     assert {[r zadd ztmp xx 10 x] == 0}
-        #     assert {[r type ztmp] eq {none}}
-        # }
-
-        # test "ZADD XX existing key - $encoding" {
-        #     r del ztmp
-        #     r zadd ztmp 10 x
-        #     assert {[r zadd ztmp xx 20 y] == 0}
-        #     assert {[r zcard ztmp] == 1}
-        # }
-
-        # test "ZADD XX returns the number of elements actually added" {
-        #     r del ztmp
-        #     r zadd ztmp 10 x
-        #     set retval [r zadd ztmp 10 x 20 y 30 z]
-        #     assert {$retval == 2}
-        # }
-
-        # test "ZADD XX updates existing elements score" {
-        #     r del ztmp
-        #     r zadd ztmp 10 x 20 y 30 z
-        #     r zadd ztmp xx 5 foo 11 x 21 y 40 zap
-        #     assert {[r zcard ztmp] == 3}
-        #     assert {[r zscore ztmp x] == 11}
-        #     assert {[r zscore ztmp y] == 21}
-        # }
-
-        # test "ZADD XX and NX are not compatible" {
-        #     r del ztmp
-        #     catch {r zadd ztmp xx nx 10 x} err
-        #     set err
-        # } {ERR*}
-
-        # test "ZADD NX with non exisitng key" {
-        #     r del ztmp
-        #     r zadd ztmp nx 10 x 20 y 30 z
-        #     assert {[r zcard ztmp] == 3}
-        # }
-
-        # test "ZADD NX only add new elements without updating old ones" {
-        #     r del ztmp
-        #     r zadd ztmp 10 x 20 y 30 z
-        #     assert {[r zadd ztmp nx 11 x 21 y 100 a 200 b] == 2}
-        #     assert {[r zscore ztmp x] == 10}
-        #     assert {[r zscore ztmp y] == 20}
-        #     assert {[r zscore ztmp a] == 100}
-        #     assert {[r zscore ztmp b] == 200}
-        # }
-
-        # test "ZADD INCR works like ZINCRBY" {
-        #     r del ztmp
-        #     r zadd ztmp 10 x 20 y 30 z
-        #     r zadd ztmp INCR 15 x
-        #     assert {[r zscore ztmp x] == 25}
-        # }
-
-        # test "ZADD INCR works with a single score-elemenet pair" {
-        #     r del ztmp
-        #     r zadd ztmp 10 x 20 y 30 z
-        #     catch {r zadd ztmp INCR 15 x 10 y} err
-        #     set err
-        # } {ERR*}
-
-        # test "ZADD CH option changes return value to all changed elements" {
-        #     r del ztmp
-        #     r zadd ztmp 10 x 20 y 30 z
-        #     assert {[r zadd ztmp 11 x 21 y 30 z] == 0}
-        #     assert {[r zadd ztmp ch 12 x 22 y 30 z] == 2}
-        # }
-
-        test "ZINCRBY calls leading to NaN result in error" {
-            r zincrby myzset +inf abc
-            assert_error "*NaN*" {r zincrby myzset -inf abc}
-        }
-
-        test {ZADD - Variadic version base case} {
-            r del myzset
-            list [r zadd myzset 10 a 20 b 30 c] [r zrange myzset 0 -1 withscores]
-        } {3 {a 10 b 20 c 30}}
-
-        test {ZADD - Return value is the number of actually added items} {
-            list [r zadd myzset 5 x 20 b 30 c] [r zrange myzset 0 -1 withscores]
-        } {1 {x 5 a 10 b 20 c 30}}
-
-        # TODO: Kvrocks should handle more info when call std::stoi/std::stol/std::stod
-        # test {ZADD - Variadic version does not add nothing on single parsing err} {
-        #     r del myzset
-        #     catch {r zadd myzset 10 a 20 b 30.badscore c} e
-        #     assert_match {*ERR*not*float*} $e
-        #     r exists myzset
-        # } {0}
-
-        test {ZADD - Variadic version will raise error on missing arg} {
-            r del myzset
-            catch {r zadd myzset 10 a 20 b 30 c 40} e
-            assert_match {*syntax*} $e
-        }
-
-        test {ZINCRBY does not work variadic even if shares ZADD implementation} {
-            r del myzset
-            catch {r zincrby myzset 10 a 20 b 30 c} e
-            assert_match {*ERR*wrong*number*arg*} $e
-        }
-
-        test "ZCARD basics - $encoding" {
-            r del ztmp
-            r zadd ztmp 10 a 20 b 30 c
-            assert_equal 3 [r zcard ztmp]
-            assert_equal 0 [r zcard zdoesntexist]
-        }
-
-        test "ZREM removes key after last element is removed" {
-            r del ztmp
-            r zadd ztmp 10 x
-            r zadd ztmp 20 y
-
-            assert_equal 1 [r exists ztmp]
-            assert_equal 0 [r zrem ztmp z]
-            assert_equal 1 [r zrem ztmp y]
-            assert_equal 1 [r zrem ztmp x]
-            assert_equal 0 [r exists ztmp]
-        }
-
-        test "ZREM variadic version" {
-            r del ztmp
-            r zadd ztmp 10 a 20 b 30 c
-            assert_equal 2 [r zrem ztmp x y a b k]
-            assert_equal 0 [r zrem ztmp foo bar]
-            assert_equal 1 [r zrem ztmp c]
-            r exists ztmp
-        } {0}
-
-        test "ZREM variadic version -- remove elements after key deletion" {
-            r del ztmp
-            r zadd ztmp 10 a 20 b 30 c
-            r zrem ztmp a b c d e f g
-        } {3}
-
-        test "ZRANGE basics - $encoding" {
-            r del ztmp
-            r zadd ztmp 1 a
-            r zadd ztmp 2 b
-            r zadd ztmp 3 c
-            r zadd ztmp 4 d
-
-            assert_equal {a b c d} [r zrange ztmp 0 -1]
-            assert_equal {a b c} [r zrange ztmp 0 -2]
-            assert_equal {b c d} [r zrange ztmp 1 -1]
-            assert_equal {b c} [r zrange ztmp 1 -2]
-            assert_equal {c d} [r zrange ztmp -2 -1]
-            assert_equal {c} [r zrange ztmp -2 -2]
-
-            # out of range start index
-            assert_equal {a b c} [r zrange ztmp -5 2]
-            assert_equal {a b} [r zrange ztmp -5 1]
-            assert_equal {} [r zrange ztmp 5 -1]
-            assert_equal {} [r zrange ztmp 5 -2]
-
-            # out of range end index
-            assert_equal {a b c d} [r zrange ztmp 0 5]
-            assert_equal {b c d} [r zrange ztmp 1 5]
-            assert_equal {} [r zrange ztmp 0 -5]
-            assert_equal {} [r zrange ztmp 1 -5]
-
-            # withscores
-            assert_equal {a 1 b 2 c 3 d 4} [r zrange ztmp 0 -1 withscores]
-        }
-
-        test "ZREVRANGE basics - $encoding" {
-            r del ztmp
-            r zadd ztmp 1 a
-            r zadd ztmp 2 b
-            r zadd ztmp 3 c
-            r zadd ztmp 4 d
-
-            assert_equal {d c b a} [r zrevrange ztmp 0 -1]
-            assert_equal {d c b} [r zrevrange ztmp 0 -2]
-            assert_equal {c b a} [r zrevrange ztmp 1 -1]
-            assert_equal {c b} [r zrevrange ztmp 1 -2]
-            assert_equal {b a} [r zrevrange ztmp -2 -1]
-            assert_equal {b} [r zrevrange ztmp -2 -2]
-
-            # out of range start index
-            assert_equal {d c b} [r zrevrange ztmp -5 2]
-            assert_equal {d c} [r zrevrange ztmp -5 1]
-            assert_equal {} [r zrevrange ztmp 5 -1]
-            assert_equal {} [r zrevrange ztmp 5 -2]
-
-            # out of range end index
-            assert_equal {d c b a} [r zrevrange ztmp 0 5]
-            assert_equal {c b a} [r zrevrange ztmp 1 5]
-            assert_equal {} [r zrevrange ztmp 0 -5]
-            assert_equal {} [r zrevrange ztmp 1 -5]
-
-            # withscores
-            assert_equal {d 4 c 3 b 2 a 1} [r zrevrange ztmp 0 -1 withscores]
-        }
-
-        test "ZRANK/ZREVRANK basics - $encoding" {
-            r del zranktmp
-            r zadd zranktmp 10 x
-            r zadd zranktmp 20 y
-            r zadd zranktmp 30 z
-            assert_equal 0 [r zrank zranktmp x]
-            assert_equal 1 [r zrank zranktmp y]
-            assert_equal 2 [r zrank zranktmp z]
-            assert_equal "" [r zrank zranktmp foo]
-            assert_equal 2 [r zrevrank zranktmp x]
-            assert_equal 1 [r zrevrank zranktmp y]
-            assert_equal 0 [r zrevrank zranktmp z]
-            assert_equal "" [r zrevrank zranktmp foo]
-        }
-
-        test "ZRANK - after deletion - $encoding" {
-            r zrem zranktmp y
-            assert_equal 0 [r zrank zranktmp x]
-            assert_equal 1 [r zrank zranktmp z]
-        }
-
-        test "ZINCRBY - can create a new sorted set - $encoding" {
-            r del zset
-            r zincrby zset 1 foo
-            assert_equal {foo} [r zrange zset 0 -1]
-            assert_equal 1 [r zscore zset foo]
-        }
-
-        test "ZINCRBY - increment and decrement - $encoding" {
-            r zincrby zset 2 foo
-            r zincrby zset 1 bar
-            assert_equal {bar foo} [r zrange zset 0 -1]
-
-            r zincrby zset 10 bar
-            r zincrby zset -5 foo
-            r zincrby zset -5 bar
-            assert_equal {foo bar} [r zrange zset 0 -1]
-
-            assert_equal -2 [r zscore zset foo]
-            assert_equal  6 [r zscore zset bar]
-        }
-
-        test "ZINCRBY return value" {
-            r del ztmp
-            set retval [r zincrby ztmp 1.0 x]
-            assert {$retval == 1.0}
-        }
-
-        proc create_default_zset {} {
-            create_zset zset {-inf a 1 b 2 c 3 d 4 e 5 f +inf g}
-        }
-
-        test "ZRANGEBYSCORE/ZREVRANGEBYSCORE/ZCOUNT basics" {
-            create_default_zset
-
-            # inclusive range
-            assert_equal {a b c} [r zrangebyscore zset -inf 2]
-            assert_equal {b c d} [r zrangebyscore zset 0 3]
-            assert_equal {d e f} [r zrangebyscore zset 3 6]
-            assert_equal {e f g} [r zrangebyscore zset 4 +inf]
-            assert_equal {c b a} [r zrevrangebyscore zset 2 -inf]
-            assert_equal {d c b} [r zrevrangebyscore zset 3 0]
-            assert_equal {f e d} [r zrevrangebyscore zset 6 3]
-            assert_equal {g f e} [r zrevrangebyscore zset +inf 4]
-            assert_equal 3 [r zcount zset 0 3]
-
-            # exclusive range
-            assert_equal {b}   [r zrangebyscore zset (-inf (2]
-            assert_equal {b c} [r zrangebyscore zset (0 (3]
-            assert_equal {e f} [r zrangebyscore zset (3 (6]
-            assert_equal {f}   [r zrangebyscore zset (4 (+inf]
-            assert_equal {b}   [r zrevrangebyscore zset (2 (-inf]
-            assert_equal {c b} [r zrevrangebyscore zset (3 (0]
-            assert_equal {f e} [r zrevrangebyscore zset (6 (3]
-            assert_equal {f}   [r zrevrangebyscore zset (+inf (4]
-            assert_equal 2 [r zcount zset (0 (3]
-
-            # test empty ranges
-            r zrem zset a
-            r zrem zset g
-
-            # inclusive
-            assert_equal {} [r zrangebyscore zset 4 2]
-            assert_equal {} [r zrangebyscore zset 6 +inf]
-            assert_equal {} [r zrangebyscore zset -inf -6]
-            assert_equal {} [r zrevrangebyscore zset +inf 6]
-            assert_equal {} [r zrevrangebyscore zset -6 -inf]
-
-            # exclusive
-            assert_equal {} [r zrangebyscore zset (4 (2]
-            assert_equal {} [r zrangebyscore zset 2 (2]
-            assert_equal {} [r zrangebyscore zset (2 2]
-            assert_equal {} [r zrangebyscore zset (6 (+inf]
-            assert_equal {} [r zrangebyscore zset (-inf (-6]
-            assert_equal {} [r zrevrangebyscore zset (+inf (6]
-            assert_equal {} [r zrevrangebyscore zset (-6 (-inf]
-
-            # empty inner range
-            assert_equal {} [r zrangebyscore zset 2.4 2.6]
-            assert_equal {} [r zrangebyscore zset (2.4 2.6]
-            assert_equal {} [r zrangebyscore zset 2.4 (2.6]
-            assert_equal {} [r zrangebyscore zset (2.4 (2.6]
-        }
-
-        test "ZRANGEBYSCORE with WITHSCORES" {
-            create_default_zset
-            assert_equal {b 1 c 2 d 3} [r zrangebyscore zset 0 3 withscores]
-            assert_equal {d 3 c 2 b 1} [r zrevrangebyscore zset 3 0 withscores]
-        }
-
-        test "ZRANGEBYSCORE with LIMIT" {
-            create_default_zset
-            assert_equal {b c}   [r zrangebyscore zset 0 10 LIMIT 0 2]
-            assert_equal {d e f} [r zrangebyscore zset 0 10 LIMIT 2 3]
-            assert_equal {d e f} [r zrangebyscore zset 0 10 LIMIT 2 10]
-            assert_equal {}      [r zrangebyscore zset 0 10 LIMIT 20 10]
-            assert_equal {f e}   [r zrevrangebyscore zset 10 0 LIMIT 0 2]
-            assert_equal {d c b} [r zrevrangebyscore zset 10 0 LIMIT 2 3]
-            assert_equal {d c b} [r zrevrangebyscore zset 10 0 LIMIT 2 10]
-            assert_equal {}      [r zrevrangebyscore zset 10 0 LIMIT 20 10]
-        }
-
-        test "ZRANGEBYSCORE with LIMIT and WITHSCORES" {
-            create_default_zset
-            assert_equal {e 4 f 5} [r zrangebyscore zset 2 5 LIMIT 2 3 WITHSCORES]
-            assert_equal {d 3 c 2} [r zrevrangebyscore zset 5 2 LIMIT 2 3 WITHSCORES]
-        }
-
-        test "ZRANGEBYSCORE with non-value min or max" {
-            assert_error "*double*" {r zrangebyscore fooz str 1}
-            assert_error "*double*" {r zrangebyscore fooz 1 str}
-            assert_error "*double*" {r zrangebyscore fooz 1 NaN}
-        }
-
-        test "ZRANGEBYSCORE for min/max score with multi member" {
-            # int score
-            create_zset mzset {-inf a -inf b -1 c 2 d 3 e +inf f +inf g}
-            assert_equal {a -inf b -inf c -1 d 2 e 3 f inf g inf} [r zrangebyscore mzset -inf +inf WITHSCORES]
-            assert_equal {g inf f inf e 3 d 2 c -1 b -inf a -inf} [r zrevrangebyscore mzset +inf -inf WITHSCORES]
-
-            # double score
-            create_zset nzset {-1.004 a -1.004 b -1.002 c 1.002 d 1.004 e 1.004 f}
-            assert_equal {a -1.004 b -1.004 c -1.002 d 1.002 e 1.004 f 1.004} [r zrangebyscore nzset -1.004 1.004 WITHSCORES]
-            assert_equal {f 1.004 e 1.004 d 1.002 c -1.002 b -1.004 a -1.004} [r zrevrangebyscore nzset 1.004 -1.004 WITHSCORES]
-        }
-
-        proc create_default_lex_zset {} {
-            create_zset zset {0 alpha 0 bar 0 cool 0 down
-                              0 elephant 0 foo 0 great 0 hill
-                              0 omega}
-        }
-
-        # TODO: ZLEXCOUNT supports advanced options
-         test "ZRANGEBYLEX/ZREVRANGEBYLEX/ZLEXCOUNT basics" {
-             create_default_lex_zset
-
-            # inclusive range
-             assert_equal {alpha bar cool} [r zrangebylex zset - \[cool]
-             assert_equal {bar cool down} [r zrangebylex zset \[bar \[down]
-             assert_equal {great hill omega} [r zrangebylex zset \[g +]
-             assert_equal {cool bar alpha} [r zrevrangebylex zset \[cool -]
-             assert_equal {down cool bar} [r zrevrangebylex zset \[down \[bar]
-             assert_equal {omega hill great foo elephant down} [r zrevrangebylex zset + \[d]
-             assert_equal 3 [r zlexcount zset \[ele \[h]
-
-            # exclusive range
-             assert_equal {alpha bar} [r zrangebylex zset - (cool]
-             assert_equal {cool} [r zrangebylex zset (bar (down]
-             assert_equal {hill omega} [r zrangebylex zset (great +]
-             assert_equal {bar alpha} [r zrevrangebylex zset (cool -]
-             assert_equal {cool} [r zrevrangebylex zset (down (bar]
-             assert_equal {omega hill} [r zrevrangebylex zset + (great]
-             assert_equal 2 [r zlexcount zset (ele (great]
-
-            # inclusive and exclusive
-             assert_equal {} [r zrangebylex zset (az (b]
-             assert_equal {} [r zrangebylex zset (z +]
-             assert_equal {} [r zrangebylex zset - \[aaaa]
-             assert_equal {} [r zrevrangebylex zset \[elez \[elex]
-             assert_equal {} [r zrevrangebylex zset (hill (omega]
-         }
-        
-        # test "ZLEXCOUNT advanced" {
-        #     create_default_lex_zset
-    
-            # assert_equal 9 [r zlexcount zset - +]
-            # assert_equal 0 [r zlexcount zset + -]
-            # assert_equal 0 [r zlexcount zset + \[c]
-            # assert_equal 0 [r zlexcount zset \[c -]
-            # assert_equal 8 [r zlexcount zset \[bar +]
-            # assert_equal 5 [r zlexcount zset \[bar \[foo]
-            # assert_equal 4 [r zlexcount zset \[bar (foo]
-            # assert_equal 4 [r zlexcount zset (bar \[foo]
-            # assert_equal 3 [r zlexcount zset (bar (foo]
-            # assert_equal 5 [r zlexcount zset - (foo]
-            # assert_equal 1 [r zlexcount zset (maxstring +]
-        # }
-
-         test "ZRANGEBYSLEX with LIMIT" {
-             create_default_lex_zset
-             assert_equal {alpha bar} [r zrangebylex zset - \[cool LIMIT 0 2]
-             assert_equal {bar cool} [r zrangebylex zset - \[cool LIMIT 1 2]
-             assert_equal {} [r zrangebylex zset \[bar \[down LIMIT 0 0]
-             assert_equal {} [r zrangebylex zset \[bar \[down LIMIT 2 0]
-             assert_equal {bar} [r zrangebylex zset \[bar \[down LIMIT 0 1]
-             assert_equal {cool} [r zrangebylex zset \[bar \[down LIMIT 1 1]
-             assert_equal {bar cool down} [r zrangebylex zset \[bar \[down LIMIT 0 100]
-             assert_equal {omega hill great foo elephant} [r zrevrangebylex zset + \[d LIMIT 0 5]
-             assert_equal {omega hill great foo} [r zrevrangebylex zset + \[d LIMIT 0 4]
-         }
-
-        test "ZRANGEBYLEX with invalid lex range specifiers" {
-            assert_error "*illegal*" {r zrangebylex fooz foo bar}
-            assert_error "*illegal*" {r zrangebylex fooz \[foo bar}
-            assert_error "*illegal*" {r zrangebylex fooz foo \[bar}
-            assert_error "*illegal*" {r zrangebylex fooz +x \[bar}
-            assert_error "*illegal*" {r zrangebylex fooz -x \[bar}
-        }
-
-        test "ZREMRANGEBYSCORE basics" {
-            proc remrangebyscore {min max} {
-                create_zset zset {1 a 2 b 3 c 4 d 5 e}
-                assert_equal 1 [r exists zset]
-                r zremrangebyscore zset $min $max
-            }
-
-            # inner range
-            assert_equal 3 [remrangebyscore 2 4]
-            assert_equal {a e} [r zrange zset 0 -1]
-
-            # start underflow
-            assert_equal 1 [remrangebyscore -10 1]
-            assert_equal {b c d e} [r zrange zset 0 -1]
-
-            # end overflow
-            assert_equal 1 [remrangebyscore 5 10]
-            assert_equal {a b c d} [r zrange zset 0 -1]
-
-            # switch min and max
-            assert_equal 0 [remrangebyscore 4 2]
-            assert_equal {a b c d e} [r zrange zset 0 -1]
-
-            # -inf to mid
-            assert_equal 3 [remrangebyscore -inf 3]
-            assert_equal {d e} [r zrange zset 0 -1]
-
-            # mid to +inf
-            assert_equal 3 [remrangebyscore 3 +inf]
-            assert_equal {a b} [r zrange zset 0 -1]
-
-            # -inf to +inf
-            assert_equal 5 [remrangebyscore -inf +inf]
-            assert_equal {} [r zrange zset 0 -1]
-
-            # exclusive min
-            assert_equal 4 [remrangebyscore (1 5]
-            assert_equal {a} [r zrange zset 0 -1]
-            assert_equal 3 [remrangebyscore (2 5]
-            assert_equal {a b} [r zrange zset 0 -1]
-
-            # exclusive max
-            assert_equal 4 [remrangebyscore 1 (5]
-            assert_equal {e} [r zrange zset 0 -1]
-            assert_equal 3 [remrangebyscore 1 (4]
-            assert_equal {d e} [r zrange zset 0 -1]
-
-            # exclusive min and max
-            assert_equal 3 [remrangebyscore (1 (5]
-            assert_equal {a e} [r zrange zset 0 -1]
-
-            # destroy when empty
-            assert_equal 5 [remrangebyscore 1 5]
-            assert_equal 0 [r exists zset]
-        }
-
-        test "ZREMRANGEBYSCORE with non-value min or max" {
-            assert_error "*double*" {r zremrangebyscore fooz str 1}
-            assert_error "*double*" {r zremrangebyscore fooz 1 str}
-            assert_error "*double*" {r zremrangebyscore fooz 1 NaN}
-        }
-
-        test "ZREMRANGEBYRANK basics" {
-            proc remrangebyrank {min max} {
-                create_zset zset {1 a 2 b 3 c 4 d 5 e}
-                assert_equal 1 [r exists zset]
-                r zremrangebyrank zset $min $max
-            }
-
-            # inner range
-            assert_equal 3 [remrangebyrank 1 3]
-            assert_equal {a e} [r zrange zset 0 -1]
-
-            # start underflow
-            assert_equal 1 [remrangebyrank -10 0]
-            assert_equal {b c d e} [r zrange zset 0 -1]
-
-            # start overflow
-            assert_equal 0 [remrangebyrank 10 -1]
-            assert_equal {a b c d e} [r zrange zset 0 -1]
-
-            # end underflow
-            assert_equal 0 [remrangebyrank 0 -10]
-            assert_equal {a b c d e} [r zrange zset 0 -1]
-
-            # end overflow
-            assert_equal 5 [remrangebyrank 0 10]
-            assert_equal {} [r zrange zset 0 -1]
-
-            # destroy when empty
-            assert_equal 5 [remrangebyrank 0 4]
-            assert_equal 0 [r exists zset]
-        }
-
-        test "ZUNIONSTORE against non-existing key doesn't set destination - $encoding" {
-            r del zseta
-            assert_equal 0 [r zunionstore dst_key 1 zseta]
-            assert_equal 0 [r exists dst_key]
-        }
-
-        test "ZUNIONSTORE with empty set - $encoding" {
-            r del zseta zsetb
-            r zadd zseta 1 a
-            r zadd zseta 2 b
-            r zunionstore zsetc 2 zseta zsetb
-            r zrange zsetc 0 -1 withscores
-        } {a 1 b 2}
-
-        test "ZUNIONSTORE basics - $encoding" {
-            r del zseta zsetb zsetc
-            r zadd zseta 1 a
-            r zadd zseta 2 b
-            r zadd zseta 3 c
-            r zadd zsetb 1 b
-            r zadd zsetb 2 c
-            r zadd zsetb 3 d
-
-            assert_equal 4 [r zunionstore zsetc 2 zseta zsetb]
-            assert_equal {a 1 b 3 d 3 c 5} [r zrange zsetc 0 -1 withscores]
-        }
-
-        test "ZUNIONSTORE with weights - $encoding" {
-            assert_equal 4 [r zunionstore zsetc 2 zseta zsetb weights 2 3]
-            assert_equal {a 2 b 7 d 9 c 12} [r zrange zsetc 0 -1 withscores]
-        }
-
-        # TODO: support ZUNIONSTORE with a regular SET type
-        # test "ZUNIONSTORE with a regular set and weights - $encoding" {
-        #     r del seta
-        #     r sadd seta a
-        #     r sadd seta b
-        #     r sadd seta c
-
-        #     assert_equal 4 [r zunionstore zsetc 2 seta zsetb weights 2 3]
-        #     assert_equal {a 2 b 5 c 8 d 9} [r zrange zsetc 0 -1 withscores]
-        # }
-
-        test "ZUNIONSTORE with AGGREGATE MIN - $encoding" {
-            assert_equal 4 [r zunionstore zsetc 2 zseta zsetb aggregate min]
-            assert_equal {a 1 b 1 c 2 d 3} [r zrange zsetc 0 -1 withscores]
-        }
-
-        test "ZUNIONSTORE with AGGREGATE MAX - $encoding" {
-            assert_equal 4 [r zunionstore zsetc 2 zseta zsetb aggregate max]
-            assert_equal {a 1 b 2 c 3 d 3} [r zrange zsetc 0 -1 withscores]
-        }
-
-        test "ZINTERSTORE basics - $encoding" {
-            assert_equal 2 [r zinterstore zsetc 2 zseta zsetb]
-            assert_equal {b 3 c 5} [r zrange zsetc 0 -1 withscores]
-        }
-
-        test "ZINTERSTORE with weights - $encoding" {
-            assert_equal 2 [r zinterstore zsetc 2 zseta zsetb weights 2 3]
-            assert_equal {b 7 c 12} [r zrange zsetc 0 -1 withscores]
-        }
-
-        test "ZINTERSTORE with AGGREGATE MIN - $encoding" {
-            assert_equal 2 [r zinterstore zsetc 2 zseta zsetb aggregate min]
-            assert_equal {b 1 c 2} [r zrange zsetc 0 -1 withscores]
-        }
-
-        test "ZINTERSTORE with AGGREGATE MAX - $encoding" {
-            assert_equal 2 [r zinterstore zsetc 2 zseta zsetb aggregate max]
-            assert_equal {b 2 c 3} [r zrange zsetc 0 -1 withscores]
-        }
-
-        foreach cmd {ZUNIONSTORE ZINTERSTORE} {
-            test "$cmd with +inf/-inf scores - $encoding" {
-                r del zsetinf1 zsetinf2
-
-                r zadd zsetinf1 +inf key
-                r zadd zsetinf2 +inf key
-                r $cmd zsetinf3 2 zsetinf1 zsetinf2
-                assert_equal inf [r zscore zsetinf3 key]
-
-                r zadd zsetinf1 -inf key
-                r zadd zsetinf2 +inf key
-                r $cmd zsetinf3 2 zsetinf1 zsetinf2
-                assert_equal 0 [r zscore zsetinf3 key]
-
-                r zadd zsetinf1 +inf key
-                r zadd zsetinf2 -inf key
-                r $cmd zsetinf3 2 zsetinf1 zsetinf2
-                assert_equal 0 [r zscore zsetinf3 key]
-
-                r zadd zsetinf1 -inf key
-                r zadd zsetinf2 -inf key
-                r $cmd zsetinf3 2 zsetinf1 zsetinf2
-                assert_equal -inf [r zscore zsetinf3 key]
-            }
-
-            test "$cmd with NaN weights $encoding" {
-                r del zsetinf1 zsetinf2
-
-                r zadd zsetinf1 1.0 key
-                r zadd zsetinf2 1.0 key
-                assert_error "*weight*not*double*" {
-                    r $cmd zsetinf3 2 zsetinf1 zsetinf2 weights nan nan
-                }
-            }
-        }
-    }
-
-    basics skiplist
-
-    # TODO: support ZINTERSTORE with a regular SET type
-    # test {ZINTERSTORE regression with two sets, intset+hashtable} {
-    #     r del seta setb setc
-    #     r sadd set1 a
-    #     r sadd set2 10
-    #     r zinterstore set3 2 set1 set2
-    # } {0}
-
-    test {ZUNIONSTORE regression, should not create NaN in scores} {
-        r zadd z -inf neginf
-        r zunionstore out 1 z weights 0
-        r zrange out 0 -1 withscores
-    } {neginf 0}
-
-    # test {ZINTERSTORE #516 regression, mixed sets and ziplist zsets} {
-    #     r sadd one 100 101 102 103
-    #     r sadd two 100 200 201 202
-    #     r zadd three 1 500 1 501 1 502 1 503 1 100
-    #     r zinterstore to_here 3 one two three WEIGHTS 0 0 1
-    #     r zrange to_here 0 -1
-    # } {100}
-
-    test {ZUNIONSTORE result is sorted} {
-        # Create two sets with common and not common elements, perform
-        # the UNION, check that elements are still sorted.
-        r del one two dest
-        set cmd1 [list r zadd one]
-        set cmd2 [list r zadd two]
-        for {set j 0} {$j < 1000} {incr j} {
-            lappend cmd1 [expr rand()] [randomInt 1000]
-            lappend cmd2 [expr rand()] [randomInt 1000]
-        }
-        {*}$cmd1
-        {*}$cmd2
-        assert {[r zcard one] > 100}
-        assert {[r zcard two] > 100}
-        r zunionstore dest 2 one two
-        set oldscore 0
-        foreach {ele score} [r zrange dest 0 -1 withscores] {
-            assert {$score >= $oldscore}
-            set oldscore $score
-        }
-    }
-
-    test "ZSET commands don't accept the empty strings as valid score" {
-        assert_error "*not*float*" {r zadd myzset "" abc}
-    }
-
-    proc stressers {encoding} {
-        if {$encoding == "ziplist"} {
-            set elements 128
-        } elseif {$encoding == "skiplist"} {
-            if {$::accurate} {set elements 1000} else {set elements 100}
-        } else {
-            puts "Unknown sorted set encoding"
-            exit
-        }
-
-        test "ZSCORE - $encoding" {
-            r del zscoretest
-            set aux {}
-            for {set i 0} {$i < $elements} {incr i} {
-                set score [expr rand()]
-                lappend aux $score
-                r zadd zscoretest $score $i
-            }
-
-            #assert_encoding $encoding zscoretest
-            for {set i 0} {$i < $elements} {incr i} {
-                assert_equal [lindex $aux $i] [r zscore zscoretest $i]
-            }
-        }
-
-        test "ZSET sorting stresser - $encoding" {
-            set delta 0
-            for {set test 0} {$test < 2} {incr test} {
-                unset -nocomplain auxarray
-                array set auxarray {}
-                set auxlist {}
-                r del myzset
-                for {set i 0} {$i < $elements} {incr i} {
-                    if {$test == 0} {
-                        set score [expr rand()]
-                    } else {
-                        set score [expr int(rand()*10)]
-                    }
-                    set auxarray($i) $score
-                    r zadd myzset $score $i
-                    # Random update
-                    if {[expr rand()] < .2} {
-                        set j [expr int(rand()*1000)]
-                        if {$test == 0} {
-                            set score [expr rand()]
-                        } else {
-                            set score [expr int(rand()*10)]
-                        }
-                        set auxarray($j) $score
-                        r zadd myzset $score $j
-                    }
-                }
-                foreach {item score} [array get auxarray] {
-                    lappend auxlist [list $score $item]
-                }
-                set sorted [lsort -command zlistAlikeSort $auxlist]
-                set auxlist {}
-                foreach x $sorted {
-                    lappend auxlist [lindex $x 1]
-                }
-
-                #assert_encoding $encoding myzset
-                set fromredis [r zrange myzset 0 -1]
-                set delta 0
-                for {set i 0} {$i < [llength $fromredis]} {incr i} {
-                    if {[lindex $fromredis $i] != [lindex $auxlist $i]} {
-                        incr delta
-                    }
-                }
-            }
-            assert_equal 0 $delta
-        }
-
-        test "ZRANGEBYSCORE fuzzy test, 100 ranges in $elements element sorted set - $encoding" {
-            set err {}
-            r del zset
-            for {set i 0} {$i < $elements} {incr i} {
-                r zadd zset [expr rand()] $i
-            }
-
-            #assert_encoding $encoding zset
-            for {set i 0} {$i < 100} {incr i} {
-                set min [expr rand()]
-                set max [expr rand()]
-                if {$min > $max} {
-                    set aux $min
-                    set min $max
-                    set max $aux
-                }
-                set low [r zrangebyscore zset -inf $min]
-                set ok [r zrangebyscore zset $min $max]
-                set high [r zrangebyscore zset $max +inf]
-                set lowx [r zrangebyscore zset -inf ($min]
-                set okx [r zrangebyscore zset ($min ($max]
-                set highx [r zrangebyscore zset ($max +inf]
-
-                if {[r zcount zset -inf $min] != [llength $low]} {
-                    append err "Error, len does not match zcount\n"
-                }
-                if {[r zcount zset $min $max] != [llength $ok]} {
-                    append err "Error, len does not match zcount\n"
-                }
-                if {[r zcount zset $max +inf] != [llength $high]} {
-                    append err "Error, len does not match zcount\n"
-                }
-                if {[r zcount zset -inf ($min] != [llength $lowx]} {
-                    append err "Error, len does not match zcount\n"
-                }
-                if {[r zcount zset ($min ($max] != [llength $okx]} {
-                    append err "Error, len does not match zcount\n"
-                }
-                if {[r zcount zset ($max +inf] != [llength $highx]} {
-                    append err "Error, len does not match zcount\n"
-                }
-
-                foreach x $low {
-                    set score [r zscore zset $x]
-                    if {$score > $min} {
-                        append err "Error, score for $x is $score > $min\n"
-                    }
-                }
-                foreach x $lowx {
-                    set score [r zscore zset $x]
-                    if {$score >= $min} {
-                        append err "Error, score for $x is $score >= $min\n"
-                    }
-                }
-                foreach x $ok {
-                    set score [r zscore zset $x]
-                    if {$score < $min || $score > $max} {
-                        append err "Error, score for $x is $score outside $min-$max range\n"
-                    }
-                }
-                foreach x $okx {
-                    set score [r zscore zset $x]
-                    if {$score <= $min || $score >= $max} {
-                        append err "Error, score for $x is $score outside $min-$max open range\n"
-                    }
-                }
-                foreach x $high {
-                    set score [r zscore zset $x]
-                    if {$score < $max} {
-                        append err "Error, score for $x is $score < $max\n"
-                    }
-                }
-                foreach x $highx {
-                    set score [r zscore zset $x]
-                    if {$score <= $max} {
-                        append err "Error, score for $x is $score <= $max\n"
-                    }
-                }
-            }
-            assert_equal {} $err
-        }
-
-        test "ZRANGEBYLEX fuzzy test, 100 ranges in $elements element sorted set - $encoding" {
-            set lexset {}
-            r del zset
-            for {set j 0} {$j < $elements} {incr j} {
-                set e [randstring 0 30 alpha]
-                lappend lexset $e
-                r zadd zset 0 $e
-            }
-            set lexset [lsort -unique $lexset]
-            for {set j 0} {$j < 100} {incr j} {
-                set min [randstring 0 30 alpha]
-                set max [randstring 0 30 alpha]
-                set mininc [randomInt 2]
-                set maxinc [randomInt 2]
-                if {$mininc} {set cmin "\[$min"} else {set cmin "($min"}
-                if {$maxinc} {set cmax "\[$max"} else {set cmax "($max"}
-                set rev [randomInt 2]
-                set cmd zrangebylex
-
-                # Make sure data is the same in both sides
-                assert {[r zrange zset 0 -1] eq $lexset}
-
-                # Get the Redis output
-                set output [r $cmd zset $cmin $cmax]
-                if {$rev} {
-                    set outlen [r zlexcount zset $cmax $cmin]
-                } else {
-                    set outlen [r zlexcount zset $cmin $cmax]
-                }
-
-                # Compute the same output via Tcl
-                set o {}
-                set copy $lexset
-                if {(!$rev && [string compare $min $max] > 0) ||
-                    ($rev && [string compare $max $min] > 0)} {
-                    # Empty output when ranges are inverted.
-                } else {
-                    if {$rev} {
-                        # Invert the Tcl array using Redis itself.
-                        set copy [r zrevrange zset 0 -1]
-                        # Invert min / max as well
-                        lassign [list $min $max $mininc $maxinc] \
-                            max min maxinc mininc
-                    }
-                    foreach e $copy {
-                        set mincmp [string compare $e $min]
-                        set maxcmp [string compare $e $max]
-                        if {
-                             ($mininc && $mincmp >= 0 || !$mininc && $mincmp > 0)
-                             &&
-                             ($maxinc && $maxcmp <= 0 || !$maxinc && $maxcmp < 0)
-                        } {
-                            lappend o $e
-                        }
-                    }
-                }
-                # assert {$o eq $output}
-                # assert {$outlen eq [llength $output]}
-            }
-        }
-
-        test "ZREMRANGEBYLEX fuzzy test, 100 ranges in $elements element sorted set - $encoding" {
-            set lexset {}
-            r del zset zsetcopy
-            for {set j 0} {$j < $elements} {incr j} {
-                set e [randstring 0 30 alpha]
-                lappend lexset $e
-                r zadd zset 0 $e
-            }
-            set lexset [lsort -unique $lexset]
-            for {set j 0} {$j < 100} {incr j} {
-                # Copy...
-                r zunionstore zsetcopy 1 zset
-                set lexsetcopy $lexset
-
-                set min [randstring 0 30 alpha]
-                set max [randstring 0 30 alpha]
-                set mininc [randomInt 2]
-                set maxinc [randomInt 2]
-                if {$mininc} {set cmin "\[$min"} else {set cmin "($min"}
-                if {$maxinc} {set cmax "\[$max"} else {set cmax "($max"}
-
-                # Make sure data is the same in both sides
-                assert {[r zrange zset 0 -1] eq $lexset}
-
-                # Get the range we are going to remove
-                set torem [r zrangebylex zset $cmin $cmax]
-                set toremlen [r zlexcount zset $cmin $cmax]
-                r zremrangebylex zsetcopy $cmin $cmax
-                set output [r zrange zsetcopy 0 -1]
-
-                # Remove the range with Tcl from the original list
-                if {$toremlen} {
-                    set first [lsearch -exact $lexsetcopy [lindex $torem 0]]
-                    set last [expr {$first+$toremlen-1}]
-                    set lexsetcopy [lreplace $lexsetcopy $first $last]
-                }
-                assert {$lexsetcopy eq $output}
-            }
-        }
-
-        test "ZSETs skiplist implementation backlink consistency test - $encoding" {
-            set diff 0
-            for {set j 0} {$j < $elements} {incr j} {
-                r zadd myzset [expr rand()] "Element-$j"
-                r zrem myzset "Element-[expr int(rand()*$elements)]"
-            }
-
-            #assert_encoding $encoding myzset
-            set l1 [r zrange myzset 0 -1]
-            set l2 [r zrevrange myzset 0 -1]
-            for {set j 0} {$j < [llength $l1]} {incr j} {
-                if {[lindex $l1 $j] ne [lindex $l2 end-$j]} {
-                    incr diff
-                }
-            }
-            assert_equal 0 $diff
-        }
-
-        test "ZSETs ZRANK augmented skip list stress testing - $encoding" {
-            set err {}
-            r del myzset
-            for {set k 0} {$k < 2000} {incr k} {
-                set i [expr {$k % $elements}]
-                if {[expr rand()] < .2} {
-                    r zrem myzset $i
-                } else {
-                    set score [expr rand()]
-                    r zadd myzset $score $i
-                    #assert_encoding $encoding myzset
-                }
-
-                set card [r zcard myzset]
-                if {$card > 0} {
-                    set index [randomInt $card]
-                    set ele [lindex [r zrange myzset $index $index] 0]
-                    set rank [r zrank myzset $ele]
-                    if {$rank != $index} {
-                        set err "$ele RANK is wrong! ($rank != $index)"
-                        break
-                    }
-                }
-            }
-            assert_equal {} $err
-        }
-    }
-
-    tags {"slow"} {
-        stressers skiplist
-    }
-}