pk-218 commented on a change in pull request #15803:
URL: https://github.com/apache/shardingsphere/pull/15803#discussion_r820091004



##########
File path: 
shardingsphere-test/shardingsphere-pipeline-test/src/test/java/org/apache/shardingsphere/data/pipeline/core/metadata/model/PipelineTableMetaDataTest.java
##########
@@ -0,0 +1,50 @@
+package org.apache.shardingsphere.data.pipeline.core.metadata.model;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+
+import java.sql.Types;
+import java.util.List;
+import java.util.Map;
+
+public final class PipelineTableMetaDataTest {
+    private PipelineTableMetaData pipelineTableMetaData;
+    private Map<String, PipelineColumnMetaData> columnMetaDataMap;
+
+    @Before
+    public void setUp() {
+        PipelineColumnMetaData pipelineColumnMetaData = new 
PipelineColumnMetaData(0, "test", Types.INTEGER, "INTEGER", true);
+        columnMetaDataMap.put("test_column", pipelineColumnMetaData);
+        pipelineTableMetaData = new PipelineTableMetaData(null, 
columnMetaDataMap);
+    }
+
+    @Test
+    public void assertGetColumnMetaDataGivenColumnIndex() {
+        List<String> pipelineTableColumns = 
pipelineTableMetaData.getColumnNames();
+        PipelineColumnMetaData actual = 
columnMetaDataMap.get(pipelineTableColumns.get(0));
+        assertThat(actual.getOrdinalPosition(), is(0));

Review comment:
       I have done away with `columnMetaDataMap`. This is how `setUp` method 
looks now
   
   ```java
       @Before
       public void setUp() {
           pipelineTableMetaData = new PipelineTableMetaData(null, 
Collections.singletonMap("test_column", new PipelineColumnMetaData(0, "test", 
Types.INTEGER, "INTEGER", true)));
       }
   ```




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