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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
async_test(t => {
let start_length = history.length;
navigation.onnavigate = t.step_func(e => {
e.intercept({ handler: async () => {
await new Promise(r => t.step_timeout(r, 0));
t.step_timeout(t.step_func_done(() => {
assert_equals(location.hash, "#1");
assert_equals(history.state, "update");
assert_equals(history.length, start_length);
}, 0));
}});
});
history.replaceState("update", "", "#1");
assert_equals(location.hash, "#1");
assert_equals(history.state, "update");
assert_equals(history.length, start_length);
}, "event.intercept() should proceed if the given promise resolves");
</script>
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