File: reload-failed-module-script.html

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<!doctype html>
<meta charset=utf-8>
<title>Insert non-async module script</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
  setup({allow_uncaught_exception: true});

  var test = async_test("Reload failed module script");

  var errorCount = 0;
  window.addEventListener("error", handleError);

  function handleError() {
    errorCount++;

    if (errorCount == 1) {
      reloadModule();
      return;
    }

    test.step(() => assert_equals(errorCount, 2));
    test.done();
  }

  function reloadModule() {
    var script = document.createElement("script");
    script.onerror = testNoError;
    script.type = "module";
    script.src = "support/missing_import.js";
    script.async = false;
    document.documentElement.appendChild(script);
  }

  function testNoError() {
    test.step(() => assert_unreached("No event expect here"));
    test.done();
  }

</script>
<script type="module" src="support/missing_import.js" onerror="testNoError()"></script>