vlsi commented on a change in pull request #1699: [CALCITE-3637] Update linq4j 
tests upgrade from junit4 to junit5
URL: https://github.com/apache/calcite/pull/1699#discussion_r361781502
 
 

 ##########
 File path: 
linq4j/src/test/java/org/apache/calcite/linq4j/test/JoinPreserveOrderTest.java
 ##########
 @@ -141,81 +134,162 @@ public JoinPreserveOrderTest(
                     deptOrderColSelectors.get(j),
                     ascendingR,
                     nullsFirstR);
-                data.add(params);
+                data.add(Arguments.of(params[0], params[1]));
               }
             }
           }
         }
       }
     }
-    return data;
+    return data.stream();
   }
 
-  @Test public void testLeftJoinPreservesOrderOfLeftInput() {
+  private void initColumns(
+      FieldCollationDescription<Employee> leftColumn,
+      FieldCollationDescription<Department> rightColumn) {
+    this.leftColumn = leftColumn;
+    this.rightColumn = rightColumn;
+  }
+
+  @ParameterizedTest
+  @MethodSource("data")
+  void testLeftJoinPreservesOrderOfLeftInput(
+      FieldCollationDescription<Employee> leftColumn,
+      FieldCollationDescription<Department> rightColumn) {
+    initColumns(leftColumn, rightColumn);
     testJoin(hashJoin(false, true), AssertOrder.PRESERVED, 
AssertOrder.IGNORED);
   }
 
-  @Test public void testRightJoinPreservesOrderOfLeftInput() {
+  @ParameterizedTest
+  @MethodSource("data")
+  void testRightJoinPreservesOrderOfLeftInput(
+      FieldCollationDescription<Employee> leftColumn,
+      FieldCollationDescription<Department> rightColumn) {
+    initColumns(leftColumn, rightColumn);
 
 Review comment:
   It becomes a bit too verbose. Is there an option to avoid this duplication 
all over the place? :(

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