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<!DOCTYPE html>
<meta charset=utf-8>
<title>Test module cancel won't trigger an assert</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="modulepreload" href="./bug_1894631_module_2.mjs" />
<link rel="modulepreload" href="./bug_1894631_module_3.mjs" />
<link rel="modulepreload" href="./non_existing.mjs" />

<script src="./bug_1894631_module_1.mjs" type="module" id="module_1"></script>
<script>
  var module1_loaded = false;
  var module1_error = false;

  SimpleTest.waitForExplicitFinish();

  const module1 = document.getElementById("module_1");
  module1.addEventListener("error", (event) => {
    info("error event");
    module1_error = true;
  });

  function testLoaded() {
    ok(module1_error, "module_1.mjs should fire an error event");
    ok(!module1_loaded, "module_1.mjs should not be loaded");
    SimpleTest.finish();
  }
</script>

<body onload='testLoaded()'>
</body>