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chromium/third_party/blink/web_tests/external/wpt/html/browsers/the-window-object/window-open-invalid-url.html 

<!doctype html>
<meta charset=utf-8>
<title>window.open() with an invalid URL</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
test(() => {
  assert_throws_dom("SyntaxError", () => window.open("https://example.com\u0000mozilla.org"));
}, "Window.open should throw SyntaxError when an invalid url is passed as the first parameter");
</script>