1 files changed, 6 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webidl/ecmascript-binding/legacy-factory-function-builtin-properties.window.js b/testing/web-platform/tests/webidl/ecmascript-binding/legacy-factory-function-builtin-properties.window.js
new file mode 100644
index 0000000000..fc5c48aca3
--- /dev/null
+++ b/testing/web-platform/tests/webidl/ecmascript-binding/legacy-factory-function-builtin-properties.window.js
@@ -0,0 +1,6 @@
+"use strict";
+
+test(() => {
+  const ownPropKeys = Reflect.ownKeys(Image).slice(0, 3);
+  assert_array_equals(ownPropKeys, ["length", "name", "prototype"]);
+}, 'Legacy factory function property enumeration order of "length", "name", and "prototype"');