reswqa commented on code in PR #22579:
URL: https://github.com/apache/flink/pull/22579#discussion_r1206475729


##########
flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/runtime/batch/sql/join/OuterJoinITCase.scala:
##########
@@ -398,7 +398,7 @@ class OuterJoinITCase(expectedJoinType: JoinType) extends 
BatchTestBase {
 }
 
 object OuterJoinITCase {
-  @Parameterized.Parameters(name = "{0}")
+  @Parameters(name = "{0}")

Review Comment:
   ```suggestion
     @Parameters(name = "expectedJoinType={0}")
   ```



##########
flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/runtime/batch/sql/join/SemiJoinITCase.scala:
##########
@@ -470,7 +469,7 @@ class SemiJoinITCase(expectedJoinType: JoinType) extends 
BatchTestBase {
 }
 
 object SemiJoinITCase {
-  @Parameterized.Parameters(name = "{0}-{1}")
+  @Parameters(name = "{0}-{1}")

Review Comment:
   It feels a bit strange, isn't this test class only one parameter? 



##########
flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/runtime/batch/sql/join/LookupJoinITCase.scala:
##########
@@ -26,23 +26,31 @@ import 
org.apache.flink.table.planner.factories.TestValuesTableFactory
 import org.apache.flink.table.planner.runtime.utils.{BatchTestBase, 
InMemoryLookupableTableSource}
 import 
org.apache.flink.table.runtime.functions.table.fullcache.inputformat.FullCacheTestInputFormat
 import org.apache.flink.table.runtime.functions.table.lookup.LookupCacheManager
+import org.apache.flink.testutils.junit.extensions.parameterized.{Parameter, 
ParameterizedTestExtension, Parameters}
 import org.apache.flink.types.Row
 
 import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.Assumptions.assumeThat
 import org.assertj.core.api.IterableAssert.assertThatIterable
-import org.junit.{After, Assume, Before, Test}
-import org.junit.Assert.assertEquals
-import org.junit.runner.RunWith
-import org.junit.runners.Parameterized
+import org.junit.jupiter.api.{AfterEach, BeforeEach, TestTemplate}
+import org.junit.jupiter.api.Assertions.assertEquals

Review Comment:
   Junit5 assertions are also discouraged.



##########
flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/runtime/batch/sql/join/JoinITCase.scala:
##########
@@ -1333,7 +1335,7 @@ class JoinITCase(expectedJoinType: JoinType) extends 
BatchTestBase {
 }
 
 object JoinITCase {
-  @Parameterized.Parameters(name = "{0}")
+  @Parameters(name = "{0}")

Review Comment:
   ```suggestion
     @Parameters(name = "expectedJoinType = {0}")
   ```



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