1 files changed, 14 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/bailout-side-effects-same-origin-domain.sub.window.js b/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/bailout-side-effects-same-origin-domain.sub.window.js
new file mode 100644
index 0000000000..f5edd7aed9
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/bailout-side-effects-same-origin-domain.sub.window.js
@@ -0,0 +1,14 @@
+// META: script=/html/resources/common.js
+// META: script=resources/document-open-side-effects.js
+
+document.domain = "{{host}}";
+
+testInIFrame("http://{{host}}:{{ports[http][1]}}/common/domain-setter.sub.html", (ctx) => {
+  const iframe = ctx.iframes[0];
+  const origURL = iframe.contentDocument.URL;
+  assertDocumentIsReadyForSideEffectsTest(iframe.contentDocument, "same origin-domain (but not same origin) document");
+  assert_throws_dom("SecurityError", iframe.contentWindow.DOMException, () => {
+    ctx.iframes[0].contentDocument.open();
+  }, "document.open() should throw a SecurityError on a same origin-domain (but not same origin) document");
+  assertOpenHasNoSideEffects(iframe.contentDocument, origURL, "same origin-domain (but not same origin) document");
+}, "document.open bailout should not have any side effects (same origin-domain (but not same origin) document)");