[GitHub] [shardingsphere] strongduanmu commented on a change in pull request #12932: Add ut for ShadowDeleteStatementRoutingEngine in shadow project

[GitBox <gi...@apache.org>]

strongduanmu commented on a change in pull request #12932:
URL: https://github.com/apache/shardingsphere/pull/12932#discussion_r726709224



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File path: shardingsphere-features/shardingsphere-shadow/shardingsphere-shadow-core/src/test/java/org/apache/shardingsphere/shadow/route/engine/dml/ShadowDeleteStatementRoutingEngineTest.java
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@@ -0,0 +1,162 @@
+/*
+ * 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 org.apache.shardingsphere.shadow.route.engine.dml;
+
+import org.apache.shardingsphere.infra.binder.statement.dml.DeleteStatementContext;
+import org.apache.shardingsphere.infra.route.context.RouteContext;
+import org.apache.shardingsphere.infra.route.context.RouteMapper;
+import org.apache.shardingsphere.infra.route.context.RouteUnit;
+import org.apache.shardingsphere.shadow.algorithm.config.AlgorithmProvidedShadowRuleConfiguration;
+import org.apache.shardingsphere.shadow.algorithm.shadow.column.ColumnRegexMatchShadowAlgorithm;
+import org.apache.shardingsphere.shadow.api.config.datasource.ShadowDataSourceConfiguration;
+import org.apache.shardingsphere.shadow.api.config.table.ShadowTableConfiguration;
+import org.apache.shardingsphere.shadow.api.shadow.ShadowOperationType;
+import org.apache.shardingsphere.shadow.condition.ShadowColumnCondition;
+import org.apache.shardingsphere.shadow.rule.ShadowRule;
+import org.apache.shardingsphere.shadow.spi.ShadowAlgorithm;
+import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.column.ColumnSegment;
+import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.BinaryOperationExpression;
+import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.simple.LiteralExpressionSegment;
+import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.predicate.WhereSegment;
+import org.apache.shardingsphere.sql.parser.sql.common.segment.generic.CommentSegment;
+import org.apache.shardingsphere.sql.parser.sql.common.segment.generic.table.SimpleTableSegment;
+import org.apache.shardingsphere.sql.parser.sql.common.segment.generic.table.TableNameSegment;
+import org.apache.shardingsphere.sql.parser.sql.common.value.identifier.IdentifierValue;
+import org.apache.shardingsphere.sql.parser.sql.dialect.statement.mysql.dml.MySQLDeleteStatement;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.LinkedList;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Properties;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public final class ShadowDeleteStatementRoutingEngineTest {
+
+    private ShadowDeleteStatementRoutingEngine shadowDeleteStatementRoutingEngine;
+
+    @Before
+    public void init() {
+        shadowDeleteStatementRoutingEngine = new ShadowDeleteStatementRoutingEngine(createDeleteStatementContext(), Collections.emptyList());
+    }
+
+    private DeleteStatementContext createDeleteStatementContext() {
+        DeleteStatementContext result = mock(DeleteStatementContext.class);
+        Collection<SimpleTableSegment> allTables = new LinkedList<>();
+        allTables.add(new SimpleTableSegment(new TableNameSegment(20, 25, new IdentifierValue("t_order"))));
+        when(result.getAllTables()).thenReturn(allTables);
+        BinaryOperationExpression binaryOperationExpression = mock(BinaryOperationExpression.class);
+        when(binaryOperationExpression.getLeft()).thenReturn(new ColumnSegment(0, 0, new IdentifierValue("user_id")));
+        when(binaryOperationExpression.getRight()).thenReturn(new LiteralExpressionSegment(0, 0, "1"));
+        WhereSegment whereSegment = new WhereSegment(0, 0, binaryOperationExpression);
+        when(result.getWhere()).thenReturn(Optional.of(whereSegment));
+        MySQLDeleteStatement mySQLDeleteStatement = new MySQLDeleteStatement();
+        Collection<CommentSegment> commentSegments = new LinkedList<>();
+        commentSegments.add(new CommentSegment("/*shadow:true,foo:bar*/", 0, 20));
+        commentSegments.add(new CommentSegment("/*aaa:bbb*/", 21, 30));
+        mySQLDeleteStatement.setCommentSegments(commentSegments);
+        when(result.getSqlStatement()).thenReturn(mySQLDeleteStatement);
+        return result;
+    }
+
+    @Test
+    public void assertRouteAndParseShadowColumnConditions() {
+        RouteContext routeContext = mock(RouteContext.class);
+        Collection<RouteUnit> routeUnits = new LinkedList<>();
+        routeUnits.add(new RouteUnit(new RouteMapper("ds", "ds_shadow"), new LinkedList<>()));
+        when(routeContext.getRouteUnits()).thenReturn(routeUnits);
+        shadowDeleteStatementRoutingEngine.route(routeContext, new ShadowRule(createAlgorithmProvidedShadowRuleConfiguration()));
+        Optional<Collection<ShadowColumnCondition>> shadowColumnConditions = shadowDeleteStatementRoutingEngine.parseShadowColumnConditions();
+        assertThat(shadowColumnConditions.isPresent(), is(true));
+        Collection<ShadowColumnCondition> shadowColumns = shadowColumnConditions.get();
+        assertThat(shadowColumns.size(), is(1));
+        Iterator<ShadowColumnCondition> iterator = shadowColumns.iterator();
+        ShadowColumnCondition userId = iterator.next();
+        assertThat(userId.getColumn(), is("user_id"));
+        assertThat(userId.getTable(), is("t_order"));
+        assertThat(userId.getValues().iterator().next(), is("1"));
+        Optional<Collection<String>> sqlNotes = shadowDeleteStatementRoutingEngine.parseSqlNotes();
+        assertThat(sqlNotes.isPresent(), is(true));
+        assertThat(sqlNotes.get().size(), is(2));
+        Iterator<String> sqlNotesIt = sqlNotes.get().iterator();
+        assertThat(sqlNotesIt.next(), is("/*shadow:true,foo:bar*/"));
+        assertThat(sqlNotesIt.next(), is("/*aaa:bbb*/"));
+    }
+
+    private AlgorithmProvidedShadowRuleConfiguration createAlgorithmProvidedShadowRuleConfiguration() {
+        AlgorithmProvidedShadowRuleConfiguration result = new AlgorithmProvidedShadowRuleConfiguration();
+        result.setEnable(true);
+        result.setDataSources(createDataSources());
+        result.setTables(createTables());
+        result.setShadowAlgorithms(createShadowAlgorithms());
+        return result;
+    }
+
+    private Map<String, ShadowAlgorithm> createShadowAlgorithms() {
+        Map<String, ShadowAlgorithm> result = new LinkedHashMap<>();
+        result.put("user-id-delete-regex-algorithm", createColumnShadowAlgorithm());
+        return result;
+    }
+
+    private ShadowAlgorithm createColumnShadowAlgorithm() {
+        final ColumnRegexMatchShadowAlgorithm columnRegexMatchShadowAlgorithm = new ColumnRegexMatchShadowAlgorithm();

Review comment:
       @LeeGuoPing Can we remove this final modifier?




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