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-rw-r--r--testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/006.html19
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diff --git a/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/006.html b/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/006.html
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index 0000000000..1dcb92615d
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/006.html
@@ -0,0 +1,19 @@
+<!doctype html>
+<title>Cancelling error after document.open</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<iframe src="/common/blank.html"></iframe>
+<script>
+var t = async_test();
+var iframe;
+onload = t.step_func(function() {
+ var iframe = document.getElementsByTagName("iframe")[0];
+ var img = iframe.contentDocument.createElement("img");
+ img.onerror = t.step_func(function() {assert_unreached()})
+ img.src = "missing";
+ iframe.contentDocument.body.appendChild(img);
+ assert_equals(iframe.contentDocument.open(), iframe.contentDocument);
+ setTimeout(function() {t.done();}, 500);
+});
+</script>