File: instantiation-error-3.html

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<!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 => {
      const msg = log[0];
      assert_array_equals(log, [msg, 1, msg, 2, msg, 3]);
    }));

    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>