sandynz commented on code in PR #28879:
URL: https://github.com/apache/shardingsphere/pull/28879#discussion_r1375594693


##########
kernel/data-pipeline/core/src/test/java/org/apache/shardingsphere/data/pipeline/core/job/PipelineJobCenterTest.java:
##########
@@ -0,0 +1,88 @@
+package org.apache.shardingsphere.data.pipeline.core.job;
+
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+
+import 
org.apache.shardingsphere.data.pipeline.common.context.PipelineJobItemContext;
+import org.apache.shardingsphere.data.pipeline.common.job.PipelineJob;
+import 
org.apache.shardingsphere.data.pipeline.core.task.runner.PipelineTasksRunner;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class PipelineJobCenterTest {
+
+    @Test
+    void addJob(){
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineJobCenter.addJob("12",pipelineJob);
+        Assertions.assertEquals(pipelineJob,PipelineJobCenter.getJob("12"));
+        Assertions.assertTrue(PipelineJobCenter.isJobExisting("12"));
+    }
+
+    @Test
+    void isJobExisting() {
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineJobCenter.addJob("12",pipelineJob);
+        Assertions.assertTrue(PipelineJobCenter.isJobExisting("12"));
+        assertNotNull(PipelineJobCenter.getJob("12"));
+    }
+
+    @Test
+    void getJob() {
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineJobCenter.addJob("13",pipelineJob);
+        assertTrue(PipelineJobCenter.isJobExisting("13"));
+        Assertions.assertEquals(pipelineJob,PipelineJobCenter.getJob("13"));
+    }
+
+    @Test
+    void getJobItemContext() {
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineTasksRunner 
pipelineTasksRunner=mock(PipelineTasksRunner.class);
+        PipelineJobItemContext 
pipelineJobItemContext=mock(PipelineJobItemContext.class);
+        
when(pipelineJob.getTasksRunner(anyInt())).thenReturn(Optional.of(pipelineTasksRunner));
+        
when(pipelineTasksRunner.getJobItemContext()).thenReturn(pipelineJobItemContext);
+        PipelineJobCenter.addJob("111",pipelineJob);
+        Optional<PipelineJobItemContext> 
result=PipelineJobCenter.getJobItemContext("111",1);
+        assertTrue(result.isPresent());
+        assertEquals(pipelineJobItemContext,result);
+    }
+
+    @Test
+    void getShardingItems() {
+        PipelineJob pipelineJob=new PipelineJob() {
+            @Override
+            public Optional<PipelineTasksRunner> getTasksRunner(int 
shardingItem) {
+                return Optional.empty();
+            }
+
+            @Override
+            public Collection<Integer> getShardingItems() {
+                Collection<Integer> collection=new ArrayList<>();
+                collection.add(2);
+                collection.add(3);
+                return collection;
+            }
+
+            @Override
+            public void stop() {
+
+            }
+        };
+        PipelineJobCenter.addJob("11",pipelineJob);
+        Collection<Integer> testCollection=new ArrayList<>();
+        testCollection.add(2);
+        testCollection.add(3);
+        Assertions.assertFalse(pipelineJob.getShardingItems().isEmpty());
+        
Assertions.assertEquals(testCollection,PipelineJobCenter.getShardingItems("11"));
+    }
+}

Review Comment:
   Newline is required at the end of file



##########
kernel/data-pipeline/core/src/test/java/org/apache/shardingsphere/data/pipeline/core/job/PipelineJobCenterTest.java:
##########
@@ -0,0 +1,88 @@
+package org.apache.shardingsphere.data.pipeline.core.job;
+
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+
+import 
org.apache.shardingsphere.data.pipeline.common.context.PipelineJobItemContext;
+import org.apache.shardingsphere.data.pipeline.common.job.PipelineJob;
+import 
org.apache.shardingsphere.data.pipeline.core.task.runner.PipelineTasksRunner;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class PipelineJobCenterTest {
+
+    @Test
+    void addJob(){
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineJobCenter.addJob("12",pipelineJob);
+        Assertions.assertEquals(pipelineJob,PipelineJobCenter.getJob("12"));
+        Assertions.assertTrue(PipelineJobCenter.isJobExisting("12"));
+    }
+
+    @Test
+    void isJobExisting() {
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineJobCenter.addJob("12",pipelineJob);
+        Assertions.assertTrue(PipelineJobCenter.isJobExisting("12"));
+        assertNotNull(PipelineJobCenter.getJob("12"));
+    }
+
+    @Test
+    void getJob() {
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineJobCenter.addJob("13",pipelineJob);
+        assertTrue(PipelineJobCenter.isJobExisting("13"));
+        Assertions.assertEquals(pipelineJob,PipelineJobCenter.getJob("13"));
+    }
+
+    @Test
+    void getJobItemContext() {
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineTasksRunner 
pipelineTasksRunner=mock(PipelineTasksRunner.class);
+        PipelineJobItemContext 
pipelineJobItemContext=mock(PipelineJobItemContext.class);
+        
when(pipelineJob.getTasksRunner(anyInt())).thenReturn(Optional.of(pipelineTasksRunner));
+        
when(pipelineTasksRunner.getJobItemContext()).thenReturn(pipelineJobItemContext);
+        PipelineJobCenter.addJob("111",pipelineJob);
+        Optional<PipelineJobItemContext> 
result=PipelineJobCenter.getJobItemContext("111",1);
+        assertTrue(result.isPresent());
+        assertEquals(pipelineJobItemContext,result);
+    }
+
+    @Test
+    void getShardingItems() {
+        PipelineJob pipelineJob=new PipelineJob() {
+            @Override
+            public Optional<PipelineTasksRunner> getTasksRunner(int 
shardingItem) {
+                return Optional.empty();
+            }
+
+            @Override
+            public Collection<Integer> getShardingItems() {
+                Collection<Integer> collection=new ArrayList<>();
+                collection.add(2);
+                collection.add(3);
+                return collection;
+            }
+
+            @Override
+            public void stop() {
+
+            }
+        };
+        PipelineJobCenter.addJob("11",pipelineJob);
+        Collection<Integer> testCollection=new ArrayList<>();
+        testCollection.add(2);
+        testCollection.add(3);
+        Assertions.assertFalse(pipelineJob.getShardingItems().isEmpty());
+        
Assertions.assertEquals(testCollection,PipelineJobCenter.getShardingItems("11"));

Review Comment:
   Is it possible to simplify this implementation? e.g. remove anonymous class 
of PipelineJob



##########
kernel/data-pipeline/core/src/test/java/org/apache/shardingsphere/data/pipeline/core/job/PipelineJobCenterTest.java:
##########
@@ -0,0 +1,88 @@
+package org.apache.shardingsphere.data.pipeline.core.job;
+
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+
+import 
org.apache.shardingsphere.data.pipeline.common.context.PipelineJobItemContext;
+import org.apache.shardingsphere.data.pipeline.common.job.PipelineJob;
+import 
org.apache.shardingsphere.data.pipeline.core.task.runner.PipelineTasksRunner;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class PipelineJobCenterTest {
+
+    @Test
+    void addJob(){
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineJobCenter.addJob("12",pipelineJob);
+        Assertions.assertEquals(pipelineJob,PipelineJobCenter.getJob("12"));
+        Assertions.assertTrue(PipelineJobCenter.isJobExisting("12"));
+    }
+
+    @Test
+    void isJobExisting() {
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineJobCenter.addJob("12",pipelineJob);
+        Assertions.assertTrue(PipelineJobCenter.isJobExisting("12"));
+        assertNotNull(PipelineJobCenter.getJob("12"));
+    }
+
+    @Test
+    void getJob() {
+        PipelineJob pipelineJob=mock(PipelineJob.class);
+        PipelineJobCenter.addJob("13",pipelineJob);
+        assertTrue(PipelineJobCenter.isJobExisting("13"));
+        Assertions.assertEquals(pipelineJob,PipelineJobCenter.getJob("13"));
+    }

Review Comment:
   Could we merge these 3 methods? For less code.



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