added unit tests (#28850)

kernel/single/core/src/test/java/org/apache/shardingsphere/single/metadata/reviser/SingleMetaDataReviseEntryTest.java

@@ -0,0 +1,75 @@
+/*
+ * 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.single.metadata.reviser;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Optional;
+
+import javax.sql.DataSource;
+
+import org.apache.shardingsphere.single.api.config.SingleRuleConfiguration;
+import org.apache.shardingsphere.single.constant.SingleOrder;
+import org.apache.shardingsphere.single.metadata.reviser.constraint.SingleConstraintReviser;
+import org.apache.shardingsphere.single.metadata.reviser.index.SingleIndexReviser;
+import org.apache.shardingsphere.single.rule.SingleRule;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+class SingleMetaDataReviseEntryTest {
+
+    private SingleMetaDataReviseEntry reviseEntry;
+
+    @BeforeEach
+    public void setUp() {
+        reviseEntry = new SingleMetaDataReviseEntry();
+    }
+
+    @Test
+    public void testGetIndexReviser() {
+        SingleRuleConfiguration ruleConfig = new SingleRuleConfiguration();
+        SingleRule rule = new SingleRule(ruleConfig, "test_database", null, new HashMap<String, DataSource>(), Collections.emptyList());
+        String tableName = "test_table";
+        Optional<SingleIndexReviser> indexReviser = reviseEntry.getIndexReviser(rule, tableName);
+        assertTrue(indexReviser.isPresent());
+        assertEquals(SingleIndexReviser.class, indexReviser.get().getClass());
+    }
+
+    @Test
+    public void testGetConstraintReviser() {
+        SingleRuleConfiguration ruleConfig = new SingleRuleConfiguration();
+        SingleRule rule = new SingleRule(ruleConfig, "test_database", null, new HashMap<String, DataSource>(), Collections.emptyList());
+        String tableName = "test_table";
+        Optional<SingleConstraintReviser> constraintReviser = reviseEntry.getConstraintReviser(rule, tableName);
+        assertTrue(constraintReviser.isPresent());
+        assertEquals(SingleConstraintReviser.class, constraintReviser.get().getClass());
+    }
+
+    @Test
+    public void testGetOrder() {
+        assertEquals(SingleOrder.ORDER, reviseEntry.getOrder());
+    }
+
+    @Test
+    public void testGetTypeClass() {
+        assertEquals(SingleRule.class, reviseEntry.getTypeClass());
+    }
+}