snuyanzin commented on code in PR #21410:
URL: https://github.com/apache/flink/pull/21410#discussion_r1047216705


##########
flink-state-backends/flink-statebackend-changelog/src/test/java/org/apache/flink/state/changelog/ChangelogDelegateStateTest.java:
##########
@@ -32,74 +32,77 @@
 import org.apache.flink.runtime.state.VoidNamespace;
 import org.apache.flink.runtime.state.VoidNamespaceSerializer;
 import org.apache.flink.runtime.state.hashmap.HashMapStateBackend;
+import org.apache.flink.testutils.junit.extensions.parameterized.Parameter;
+import 
org.apache.flink.testutils.junit.extensions.parameterized.ParameterizedTestExtension;
+import org.apache.flink.testutils.junit.extensions.parameterized.Parameters;
 import org.apache.flink.util.IOUtils;
 
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.junit.runners.Parameterized;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.TestTemplate;
+import org.junit.jupiter.api.extension.ExtendWith;
 
 import java.util.Arrays;
 import java.util.List;
 import java.util.function.Supplier;
 
 import static 
org.apache.flink.state.changelog.ChangelogStateBackendTestUtils.DummyCheckpointingStorageAccess;
 import static 
org.apache.flink.state.changelog.ChangelogStateBackendTestUtils.createKeyedBackend;
-import static org.junit.Assert.assertSame;
+import static org.assertj.core.api.Assertions.assertThat;
 
 /** Tests for {@link ChangelogStateBackend} delegating state accesses. */
-@RunWith(Parameterized.class)
+@ExtendWith(ParameterizedTestExtension.class)
 public class ChangelogDelegateStateTest {

Review Comment:
   ```suggestion
   class ChangelogDelegateStateTest {
   ```
   could be package private



##########
flink-state-backends/flink-statebackend-changelog/src/test/java/org/apache/flink/state/changelog/ChangelogKeyedStateBackendTest.java:
##########
@@ -38,22 +38,23 @@
 import 
org.apache.flink.runtime.state.ttl.mock.MockKeyedStateBackend.MockSnapshotSupplier;
 import org.apache.flink.runtime.state.ttl.mock.MockKeyedStateBackendBuilder;
 import 
org.apache.flink.state.changelog.ChangelogStateBackendTestUtils.DummyCheckpointingStorageAccess;
+import org.apache.flink.testutils.junit.extensions.parameterized.Parameter;
+import 
org.apache.flink.testutils.junit.extensions.parameterized.ParameterizedTestExtension;
+import org.apache.flink.testutils.junit.extensions.parameterized.Parameters;
 
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.junit.runners.Parameterized;
-import org.junit.runners.Parameterized.Parameter;
+import org.junit.jupiter.api.TestTemplate;
+import org.junit.jupiter.api.extension.ExtendWith;
 
 import java.util.concurrent.RunnableFuture;
 
 import static java.util.Collections.emptyList;
-import static org.junit.Assert.assertEquals;
+import static org.assertj.core.api.Assertions.assertThat;
 
 /** {@link ChangelogKeyedStateBackend} test. */
-@RunWith(Parameterized.class)
+@ExtendWith(ParameterizedTestExtension.class)
 public class ChangelogKeyedStateBackendTest {

Review Comment:
   ```suggestion
   class ChangelogKeyedStateBackendTest {
   ```
   could be package private



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