instantiation-error-3.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/scripting-1/the-script-element/module/instantiation-error-3.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Handling of instantiation errors, 3</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

    setup({allow_uncaught_exception: true});

    const test_load = async_test(

        "Test that unresolvable cycles lead to SyntaxError events on window " +

        "and load events on script");

    window.log = [];

    window.addEventListener("error", ev => {

      test_load.step(() => assert_equals(ev.error.constructor, SyntaxError));

      log.push(ev.message);

});

    window.addEventListener("load", test_load.step_func_done(ev => {

      assert_equals(log.length, 6, 'Log length');

      assert_equals(log[1], 1);

      assert_equals(log[3], 2);

      assert_equals(log[5], 3);

      assert_not_equals(log[0], log[2],

        'Instantiation error objects for different root scripts');

      assert_equals(log[0], log[4],

        'Instantiation error objects for the same root script');

    }));

    function unreachable() { log.push("unexpected"); }

</script>

<script type="module" src="./cycle-unresolvable.js"

    onerror="unreachable()" onload="log.push(1)" nomodule></script>

<script type="module" src="./cycle-unresolvable-a.js"

    onerror="unreachable()" onload="log.push(2)"></script>

<script type="module" src="./cycle-unresolvable.js"

    onerror="unreachable()" onload="log.push(3)"></script>