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<!doctype html>
<title>async document.write in a module</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
async_test(t => {
// Expose {test} in the iframe for using the step_timeout helper.
document.test = t;
const iframe = document.createElement("iframe");
iframe.onerror = t.unreached_func("Error loading iframe");
let onLoadWasCalled = false;
iframe.onload = t.step_func(() => {
onLoadWasCalled = true;
assert_equals(iframe.contentDocument.body.textContent, "Initial body contents\n");
// Don't call the event handler another time after document.write.
iframe.onload = null;
});
document.addEventListener("documentWriteDone", t.step_func_done(() => {
assert_true(onLoadWasCalled, "onload must be called");
assert_equals(iframe.contentDocument.body.textContent, "document.write body contents\n");
}));
iframe.src = "module-delayed-iframe.html";
document.body.appendChild(iframe);
});
</script>
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