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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="i" src="/common/blank.html"></iframe>
<script>
promise_test(async t => {
// Wait for after the load event so that the navigation doesn't get converted
// into a replace navigation.
await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));
// Step 1
assert_equals(navigation.entries().length, 1, "step 1 outer entries() length");
assert_equals(i.contentWindow.navigation.entries().length, 1, "step 1 iframe entries() length");
await navigation.navigate("#top").committed;
// Step 2: iframe at initial entry, top on second entry
assert_equals(navigation.entries().length, 2, "step 2 outer entries() length");
assert_equals(i.contentWindow.navigation.entries().length, 1, "step 2 iframe entries() length");
await i.contentWindow.navigation.navigate("#iframe").committed;
// Step 3: Both windows on second entry.
assert_equals(navigation.entries().length, 2, "step 3 outer entries() length");
assert_equals(i.contentWindow.navigation.entries().length, 2, "step 3 iframe entries() length");
assert_equals(navigation.currentEntry.index, 1, "step 3 outer index");
assert_equals(i.contentWindow.navigation.currentEntry.index, 1, "step 1 iframe index");
// NOTE: the order of navigation in the two windows is not guaranteed; we need to wait for both.
// Going back in the iframe should go 3->2 (navigating iframe only)
await Promise.all([
i.contentWindow.navigation.back().committed,
new Promise(resolve => i.contentWindow.onpopstate = resolve)
]);
assert_equals(navigation.currentEntry.index, 1, "after iframe back() outer index");
assert_equals(i.contentWindow.navigation.currentEntry.index, 0, "after iframe back() iframe index");
// Going forward in iframe should go 2->3
await Promise.all([
i.contentWindow.navigation.forward().commited,
new Promise(resolve => i.contentWindow.onpopstate = resolve)
]);
assert_equals(navigation.currentEntry.index, 1, "after iframe forward() outer index");
assert_equals(i.contentWindow.navigation.currentEntry.index, 1, "after iframe forward() iframe index");
// Going back in top should go 3->1 (navigating both windows).
await Promise.all([
navigation.back().commited,
new Promise(resolve => i.contentWindow.onpopstate = resolve)
]);
assert_equals(navigation.currentEntry.index, 0, "after outer back() outer index");
assert_equals(i.contentWindow.navigation.currentEntry.index, 0, "after outer back() iframe index");
// Next two should not navigate the iframe
i.contentWindow.onpopstate = t.unreached_func("popstate must not be called");
// Going forward in top should go 1->2 (navigating top only)
await navigation.forward().committed;
await new Promise(resolve => t.step_timeout(resolve, 0));
assert_equals(navigation.currentEntry.index, 1, "after outer forward() outer index");
assert_equals(i.contentWindow.navigation.currentEntry.index, 0, "after outer forward() iframe index");
// Going back in top should go 2->1
await navigation.back().committed;
await new Promise(resolve => t.step_timeout(resolve, 0));
assert_equals(navigation.currentEntry.index, 0, "after outer second back() outer index");
assert_equals(i.contentWindow.navigation.currentEntry.index, 0, "after outer second back() iframe index");
// Going forward in iframe should go 1->3 (navigating both windows)
await Promise.all([
i.contentWindow.navigation.forward().commited,
new Promise(resolve => i.contentWindow.onpopstate = resolve)
]);
assert_equals(navigation.currentEntry.index, 1, "after iframe second forward() outer index");
assert_equals(i.contentWindow.navigation.currentEntry.index, 1, "after iframe second forward() iframe index");
}, "navigation.back() and navigation.forward() can navigate multiple frames");
</script>
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