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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 => {
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>
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