Fix test coverage

Signed-off-by: Hai Yan <[email protected]>
opensearch-project · Feb 13, 2024 · ce3aecb · ce3aecb
1 parent 7e7b3a3
commit ce3aecb
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/data-prepper-api/src/test/java/org/opensearch/dataprepper/model/event/JacksonEventTest.java b/data-prepper-api/src/test/java/org/opensearch/dataprepper/model/event/JacksonEventTest.java
@@ -82,6 +82,12 @@ void testPutAndGet_withStrings(final String key) {
         assertThat(result, is(equalTo(value)));
     }
 
+    @Test
+    public void testPutKeyCannotBeEmptyString() {
+        Throwable exception = assertThrows(IllegalArgumentException.class, () -> event.put("", "value"));
+        assertThat(exception.getMessage(), containsStringIgnoringCase("key cannot be an empty string"));
+    }
+
     @Test
     public void testPutAndGet_withMultLevelKey() {
         final String key = "foo/bar";