Poorvankbhatia commented on code in PR #26917:
URL: https://github.com/apache/flink/pull/26917#discussion_r2301432254


##########
flink-streaming-java/src/test/java/org/apache/flink/streaming/runtime/operators/StreamSourceOperatorWatermarksTest.java:
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@@ -18,65 +18,84 @@
 
 package org.apache.flink.streaming.runtime.operators;
 
+import org.apache.flink.api.common.eventtime.Watermark;
+import org.apache.flink.api.common.eventtime.WatermarkStrategy;
 import org.apache.flink.api.common.typeinfo.BasicTypeInfo;
 import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.api.connector.source.ReaderOutput;
+import org.apache.flink.api.connector.source.SourceReader;
+import org.apache.flink.api.connector.source.SourceReaderContext;
+import org.apache.flink.api.connector.source.SplitEnumerator;
+import org.apache.flink.api.connector.source.SplitEnumeratorContext;
+import org.apache.flink.core.io.InputStatus;
 import org.apache.flink.runtime.execution.CancelTaskException;
 import org.apache.flink.runtime.jobgraph.OperatorID;
-import 
org.apache.flink.streaming.api.functions.source.legacy.RichSourceFunction;
-import org.apache.flink.streaming.api.functions.source.legacy.SourceFunction;
 import org.apache.flink.streaming.api.graph.StreamConfig;
-import org.apache.flink.streaming.api.operators.StreamSource;
-import org.apache.flink.streaming.api.watermark.Watermark;
-import org.apache.flink.streaming.runtime.tasks.SourceStreamTask;
+import org.apache.flink.streaming.api.operators.SourceOperatorFactory;
+import org.apache.flink.streaming.runtime.tasks.SourceOperatorStreamTask;
 import org.apache.flink.streaming.runtime.tasks.StreamTaskTestHarness;
+import org.apache.flink.test.util.source.AbstractTestSource;
+import org.apache.flink.test.util.source.TestSourceReader;
+import org.apache.flink.test.util.source.TestSplit;
+import org.apache.flink.test.util.source.TestSplitEnumerator;
 import org.apache.flink.util.ExceptionUtils;
 
 import org.junit.jupiter.api.Test;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
 
-/** Tests for {@link StreamSource} operators. */
-@SuppressWarnings("serial")
+/** Tests for Source V2 operators. */
 class StreamSourceOperatorWatermarksTest {
 
     @Test
     void testEmitMaxWatermarkForFiniteSource() throws Exception {
-        StreamSource<String, ?> sourceOperator = new StreamSource<>(new 
FiniteSource<>());
+        SourceOperatorFactory<String> factory =

Review Comment:
   Thanks. Your concern is valid. Removed those tests. 



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