#28536 Add more unit tests for IndexReviseEngine (#28834)

* Add more unit tests for IndexReviseEngine (#28536)

* Add more validation (#28536)

* fix codestyle: add space in the end (#28536)

* fix codestyle: remove the spaces inside the method (#28536)

infra/common/src/test/java/org/apache/shardingsphere/infra/metadata/database/schema/reviser/index/IndexReviseEngineTest.java

@@ -0,0 +1,85 @@
+/*
+ * 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.infra.metadata.database.schema.reviser.index;
+
+import org.apache.shardingsphere.infra.database.core.metadata.data.model.IndexMetaData;
+import org.apache.shardingsphere.infra.rule.ShardingSphereRule;
+import org.apache.shardingsphere.infra.metadata.database.schema.reviser.MetaDataReviseEntry;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Optional;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.equalToObject;
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.when;
+
+class IndexReviseEngineTest<T extends ShardingSphereRule> {
+
+    @Mock
+    private T rule;
+
+    @Mock
+    private MetaDataReviseEntry<T> metaDataReviseEntry;
+
+    @InjectMocks
+    private IndexReviseEngine<T> indexReviseEngine;
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+    }
+
+    @Test
+    void assertReviseIsPresentIsFalse() {
+        when(metaDataReviseEntry.getIndexReviser(any(), anyString())).thenReturn(Optional.empty());
+        Collection<IndexMetaData> indexMetaDataCollection = Collections.singletonList(new IndexMetaData("index"));
+        Collection<IndexMetaData> actual = indexReviseEngine.revise("tableName", indexMetaDataCollection);
+        Assertions.assertNotNull(actual);
+        assertThat(actual.size(), is(1));
+        assertThat(actual, equalToObject(indexMetaDataCollection));
+    }
+
+    @Test
+    void assertReviseIsPresentIsTrue() {
+        IndexReviser<T> reviser = mock(IndexReviser.class);
+        IndexMetaData indexMetaData = new IndexMetaData("index");
+        doReturn(Optional.of(reviser)).when(metaDataReviseEntry).getIndexReviser(any(), anyString());
+        when(reviser.revise(anyString(), any(), any())).thenReturn(Optional.of(indexMetaData));
+        Collection<IndexMetaData> indexMetaDataCollection = Arrays.asList(new IndexMetaData("index1"), new IndexMetaData("index2"));
+        Collection<IndexMetaData> actual = indexReviseEngine.revise("tableName", indexMetaDataCollection);
+        assertThat(actual.size(), equalTo(1));
+        assertTrue(actual.contains(indexMetaData));
+    }
+
+}