1 files changed, 12 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/browsers/the-window-object/window-open-defaults.window.js b/testing/web-platform/tests/html/browsers/the-window-object/window-open-defaults.window.js
new file mode 100644
index 0000000000..1b2d68a462
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/the-window-object/window-open-defaults.window.js
@@ -0,0 +1,12 @@
+async_test(t => {
+  const frame = document.createElement("iframe");
+  t.add_cleanup(() => frame.remove());
+  frame.name = "foo";
+  frame.src = "/common/blank.html";
+  frame.onload = t.step_func(() => {
+    frame.onload = t.unreached_func();
+    t.step_timeout(() => t.done(), 500);
+    assert_equals(window[0], window.open(undefined, "foo"));
+  });
+  document.body.append(frame);
+}, "window.open()'s url parameter default");