[CALCITE-6572] Add more tests for NULL arguments to TO_CHAR functions

* Added a test for first argument NULL without a cast * Added a test for both arguments NULL without a cast
Bit-Quill · Sep 13, 2024 · 279e37a · 279e37a
1 parent 890f9ad
commit 279e37a
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java b/testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java
@@ -4893,7 +4893,8 @@ void testBitGetFunc(SqlOperatorFixture f, String functionName) {
       f.checkNull("to_char(timestamp '2022-06-03 12:15:48.678', NULL)");
       f.checkNull("to_char(cast(NULL as timestamp), NULL)");
       f.checkNull("to_char(cast(NULL as timestamp), 'Day')");
-    };
+      f.checkNull("to_char(NULL, 'Day')");
+      f.checkNull("to_char(NULL, NULL)");    };
     final List<SqlLibrary> libraries =
         list(SqlLibrary.MYSQL, SqlLibrary.ORACLE, SqlLibrary.REDSHIFT);
     f0.forEachLibrary(libraries, consumer);
@@ -5161,6 +5162,8 @@ void testBitGetFunc(SqlOperatorFixture f, String functionName) {
       f.checkNull("to_char(timestamp '2022-06-03 12:15:48.678', NULL)");
       f.checkNull("to_char(cast(NULL as timestamp), NULL)");
       f.checkNull("to_char(cast(NULL as timestamp), 'Day')");
+      f.checkNull("to_char(NULL, 'Day')");
+      f.checkNull("to_char(NULL, NULL)");
     } finally {
       Locale.setDefault(originalLocale);
     }