1 files changed, 47 insertions, 0 deletions
diff --git a/components/script/dom/bindings/codegen/parser/tests/test_callback_interface.py b/components/script/dom/bindings/codegen/parser/tests/test_callback_interface.py
new file mode 100644
index 00000000000..80896ca1edb
--- /dev/null
+++ b/components/script/dom/bindings/codegen/parser/tests/test_callback_interface.py
@@ -0,0 +1,47 @@
+import WebIDL
+
+def WebIDLTest(parser, harness):
+    parser.parse("""
+        callback interface TestCallbackInterface {
+          attribute boolean bool;
+        };
+    """)
+
+    results = parser.finish()
+
+    iface = results[0]
+
+    harness.ok(iface.isCallback(), "Interface should be a callback")
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse("""
+            interface TestInterface {
+            };
+            callback interface TestCallbackInterface : TestInterface {
+              attribute boolean bool;
+            };
+        """)
+        results = parser.finish()
+    except:
+        threw = True
+
+    harness.ok(threw, "Should not allow non-callback parent of callback interface")
+
+    parser = parser.reset()
+    threw = False
+    try:
+        parser.parse("""
+            interface TestInterface : TestCallbackInterface {
+            };
+            callback interface TestCallbackInterface {
+              attribute boolean bool;
+            };
+        """)
+        results = parser.finish()
+    except:
+        threw = True
+
+    harness.ok(threw, "Should not allow callback parent of non-callback interface")
+