Add m-esr52 at 52.6.0

1 files changed, 13 insertions, 0 deletions

diff --git a/dom/bindings/parser/tests/test_enum_duplicate_values.py b/dom/bindings/parser/tests/test_enum_duplicate_values.py
new file mode 100644
index 000000000..51205d209
--- /dev/null
+++ b/dom/bindings/parser/tests/test_enum_duplicate_values.py
@@ -0,0 +1,13 @@
+import WebIDL
+
+def WebIDLTest(parser, harness):
+    try:
+        parser.parse("""
+            enum TestEnumDuplicateValue {
+              "",
+              ""
+            };
+        """)
+        harness.ok(False, "Should have thrown!")
+    except:
+        harness.ok(True, "Enum TestEnumDuplicateValue should throw")