test_duplicate_modulepreload_bad_uri.html

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<title>Test duplicate bad URI import doesn't crash</title>

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<link rel="modulepreload" href="./bug_2009204_module_a.mjs" />

<link rel="modulepreload" href="./bug_2009204_module_b.mjs" />

<script>

  SimpleTest.waitForExplicitFinish();

  // The test passes if we reach here without crashing due to an assertion

  // failure in PreloaderBase::NotifyOpen. The bug was that when two modules

  // are both modulepreloaded and they both import the same bad URI (node:async_hooks),

  // both preloads start simultaneously and both try to load the dependency.

  // The first load would fail with NS_ERROR_DOM_BAD_URI after registering the

  // preload, then the second load would try to register the preload again,

  // hitting an assertion.

  window.addEventListener("load", () => {

    ok(true, "Page loaded without assertion failure");

    SimpleTest.finish();

});

</script>

<body>

  Test for Bug 2009204 - duplicate bad URI import should not crash

</body>