img-crossorigin-no-credentials-prompt.html

<!DOCTYPE HTML>
<head>
  <title>No credentials should be prompted for on seeing a 401 for &lt;img crossorigin&gt;.</title>
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
  async_test(t => {
    var i = document.createElement('img');
    i.src = "http://localhost:8000/security/resources/img-basic-auth.php?uid=41532";
    i.crossorigin = "anonymous";
    i.onload = t.unreached_func("Expected cross-origin access check failure.");
    i.onerror = t.step_func_done();
  }, 'crossorigin="anonymous"');

  async_test(t => {
    var i = document.createElement('img');
    i.src = "http://localhost:8000/security/resources/img-basic-auth.php?uid=41533";
    i.crossorigin = "use-credentials";
    i.onload = t.unreached_func("Expected cross-origin access check failure.");
    i.onerror = t.step_func_done();
  }, 'crossorigin="use-credentials"');
</script>
</body>

chromium/third_party/blink/web_tests/http/tests/security/img-crossorigin-no-credentials-prompt.html