1 files changed, 45 insertions, 0 deletions
diff --git a/dom/bindings/parser/tests/test_identifier_conflict.py b/dom/bindings/parser/tests/test_identifier_conflict.py
new file mode 100644
index 0000000000..424f4d6285
--- /dev/null
+++ b/dom/bindings/parser/tests/test_identifier_conflict.py
@@ -0,0 +1,45 @@
+def WebIDLTest(parser, harness):
+    try:
+        parser.parse(
+            """
+            enum Foo { "a" };
+            interface Foo;
+        """
+        )
+        parser.finish()
+        harness.ok(False, "Should fail to parse")
+    except Exception as e:
+        harness.ok(
+            "Name collision" in str(e), "Should have name collision for interface"
+        )
+
+    parser = parser.reset()
+    try:
+        parser.parse(
+            """
+            dictionary Foo { long x; };
+            enum Foo { "a" };
+        """
+        )
+        parser.finish()
+        harness.ok(False, "Should fail to parse")
+    except Exception as e:
+        harness.ok(
+            "Name collision" in str(e), "Should have name collision for dictionary"
+        )
+
+    parser = parser.reset()
+    try:
+        parser.parse(
+            """
+            enum Foo { "a" };
+            enum Foo { "b" };
+        """
+        )
+        parser.finish()
+        harness.ok(False, "Should fail to parse")
+    except Exception as e:
+        harness.ok(
+            "Multiple unresolvable definitions" in str(e),
+            "Should have name collision for dictionary",
+        )