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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 = navigation.entries().length;
let start_index = navigation.currentEntry.index;
// Wait for after the load event so that the navigation doesn't get converted
// into a replace navigation.
window.onload = () => t.step_timeout(() => {
let onnavigate_calls = 0;
let onnavigatesuccess_calls = 0;
navigation.onnavigate = e => {
onnavigate_calls++;
e.intercept();
}
navigation.onnavigatesuccess = t.step_func(e => {
onnavigatesuccess_calls++;
if (onnavigatesuccess_calls == 3) {
assert_equals(navigation.entries().length, start_length + 2);
assert_equals(navigation.currentEntry.index, start_index + 1);
assert_equals(onnavigate_calls, 3);
history.back();
} else if (onnavigatesuccess_calls == 4) {
assert_equals(navigation.entries().length, start_length + 2);
assert_equals(navigation.currentEntry.index, start_index);
assert_equals(onnavigate_calls, 4);
t.done();
}
});
navigation.navigate("?foo").finished
.then(t.step_func(() => navigation.navigate("?bar").finished))
.then(t.step_func(() => {
assert_equals(navigation.entries().length, start_length + 2);
assert_equals(navigation.currentEntry.index, start_index + 2);
assert_equals(onnavigate_calls, 2);
history.back();
}));
}, 0);
}, "event.intercept() can intercept same-document history.back()");
</script>
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