[datasketches-cpp] branch cleanup_warnings updated: test with max lgk

[al...@apache.org]

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

alsay pushed a commit to branch cleanup_warnings
in repository https://gitbox.apache.org/repos/asf/datasketches-cpp.git


The following commit(s) were added to refs/heads/cleanup_warnings by this push:
     new f7483d6  test with max lgk
f7483d6 is described below

commit f7483d6499e71d1b53beed0b1451abde421e35c4
Author: AlexanderSaydakov <Al...@users.noreply.github.com>
AuthorDate: Mon Mar 22 19:02:24 2021 -0700

    test with max lgk
---
 cpc/test/cpc_sketch_test.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/cpc/test/cpc_sketch_test.cpp b/cpc/test/cpc_sketch_test.cpp
index 837a61d..0a2ca74 100644
--- a/cpc/test/cpc_sketch_test.cpp
+++ b/cpc/test/cpc_sketch_test.cpp
@@ -283,6 +283,26 @@ TEST_CASE("cpc sketch: serialize deserialize sliding, bytes", "[cpc_sketch]") {
   REQUIRE(deserialized.validate());
 }
 
+TEST_CASE("cpc sketch: serialize deserialize sliding huge", "[cpc_sketch]") {
+  cpc_sketch sketch(26);
+  const int n = 10000000;
+  for (int i = 0; i < n; i++) sketch.update(i);
+  REQUIRE(sketch.get_estimate() == Approx(n).margin(n * 0.001));
+  auto bytes = sketch.serialize();
+  cpc_sketch deserialized = cpc_sketch::deserialize(bytes.data(), bytes.size());
+  REQUIRE(deserialized.is_empty() == sketch.is_empty());
+  REQUIRE(deserialized.get_estimate() == sketch.get_estimate());
+  REQUIRE(deserialized.validate());
+  REQUIRE_THROWS_AS(cpc_sketch::deserialize(bytes.data(), 7), std::out_of_range);
+  REQUIRE_THROWS_AS(cpc_sketch::deserialize(bytes.data(), 15), std::out_of_range);
+  REQUIRE_THROWS_AS(cpc_sketch::deserialize(bytes.data(), bytes.size() - 1), std::out_of_range);
+
+  // updating again with the same values should not change the sketch
+  for (int i = 0; i < n; i++) deserialized.update(i);
+  REQUIRE(deserialized.get_estimate() == sketch.get_estimate());
+  REQUIRE(deserialized.validate());
+}
+
 TEST_CASE("cpc sketch: copy", "[cpc_sketch]") {
   cpc_sketch s1(11);
   s1.update(1);

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