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<!DOCTYPE html>
<meta charset="utf-8">
<title>Same-document traversals during same-document traversals (using fragment navigations)</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!--
Compare this to cross-document-traversal-cross-document-traversal.html. Since
there are no network loads or document unloads to cancel tasks, both
traversals should observably go through. Target step calculation for the
second traversal should take place after the first traversal is finished. So
we end up with both traversals observable in sequence.
-->
<body>
<script type="module">
import { createIframe, delay, waitForHashchange } from "./resources/helpers.mjs";
promise_test(async t => {
const iframe = await createIframe(t);
const baseURL = iframe.contentWindow.location.href;
// Setup
iframe.contentWindow.location.hash = "#1";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.location.hash = "#2";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.location.hash = "#3";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.history.back();
await waitForHashchange(iframe.contentWindow);
assert_equals(iframe.contentWindow.location.hash, "#2", "we made our way to #2 for setup");
iframe.contentWindow.history.back();
assert_equals(iframe.contentWindow.location.hash, "#2", "must not go back synchronously");
iframe.contentWindow.history.forward();
assert_equals(iframe.contentWindow.location.hash, "#2", "must not go forward synchronously");
const event1 = await waitForHashchange(iframe.contentWindow);
assert_equals(event1.oldURL, baseURL + "#2", "oldURL 1");
assert_equals(event1.newURL, baseURL + "#1", "newURL 1");
// Cannot test iframe.contentWindow.location.hash since the second history
// traversal task is racing with the fire an event task, so we don't know
// which will happen first.
const event2 = await waitForHashchange(iframe.contentWindow);
assert_equals(event2.oldURL, baseURL + "#1", "oldURL 2");
assert_equals(event2.newURL, baseURL + "#2", "newURL 2");
assert_equals(iframe.contentWindow.location.hash, "#2");
}, "same-document traversals in opposite directions: queued up");
promise_test(async t => {
const iframe = await createIframe(t);
const baseURL = iframe.contentWindow.location.href;
// Setup
iframe.contentWindow.location.hash = "#1";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.location.hash = "#2";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.history.back();
assert_equals(iframe.contentWindow.location.hash, "#2", "must not go back synchronously");
iframe.contentWindow.history.forward();
assert_equals(iframe.contentWindow.location.hash, "#2", "must not go forward synchronously");
const event1 = await waitForHashchange(iframe.contentWindow);
assert_equals(event1.oldURL, baseURL + "#2", "oldURL 1");
assert_equals(event1.newURL, baseURL + "#1", "newURL 1");
// Cannot test iframe.contentWindow.location.hash since the second history
// traversal task is racing with the fire an event task, so we don't know
// which will happen first.
const event2 = await waitForHashchange(iframe.contentWindow);
assert_equals(event2.oldURL, baseURL + "#1", "oldURL 2");
assert_equals(event2.newURL, baseURL + "#2", "newURL 2");
assert_equals(iframe.contentWindow.location.hash, "#2");
}, "same-document traversals in opposite directions, second traversal invalid at queuing time: queued up");
promise_test(async t => {
const iframe = await createIframe(t);
const baseURL = iframe.contentWindow.location.href;
// Setup
iframe.contentWindow.location.hash = "#1";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.location.hash = "#2";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.location.hash = "#3";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.history.back();
assert_equals(iframe.contentWindow.location.hash, "#3", "must not go back synchronously (1)");
iframe.contentWindow.history.back();
assert_equals(iframe.contentWindow.location.hash, "#3", "must not go back synchronously (2)");
const event1 = await waitForHashchange(iframe.contentWindow);
assert_equals(event1.oldURL, baseURL + "#3", "oldURL 1");
assert_equals(event1.newURL, baseURL + "#2", "newURL 1");
// Cannot test iframe.contentWindow.location.hash since the second history
// traversal task is racing with the fire an event task, so we don't know
// which will happen first.
const event2 = await waitForHashchange(iframe.contentWindow);
assert_equals(event2.oldURL, baseURL + "#2", "oldURL 2");
assert_equals(event2.newURL, baseURL + "#1", "newURL 2");
assert_equals(iframe.contentWindow.location.hash, "#1");
}, "same-document traversals in the same (back) direction: queue up");
promise_test(async t => {
const iframe = await createIframe(t);
const baseURL = iframe.contentWindow.location.href;
// Setup
iframe.contentWindow.location.hash = "#1";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.location.hash = "#2";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.location.hash = "#3";
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.history.back();
await waitForHashchange(iframe.contentWindow);
iframe.contentWindow.history.back();
await waitForHashchange(iframe.contentWindow);
assert_equals(iframe.contentWindow.location.hash, "#1", "we made our way to #1 for setup");
iframe.contentWindow.history.forward();
assert_equals(iframe.contentWindow.location.hash, "#1", "must not go forward synchronously (1)");
iframe.contentWindow.history.forward();
assert_equals(iframe.contentWindow.location.hash, "#1", "must not go forward synchronously (2)");
const event1 = await waitForHashchange(iframe.contentWindow);
assert_equals(event1.oldURL, baseURL + "#1", "oldURL 1");
assert_equals(event1.newURL, baseURL + "#2", "newURL 1");
// Cannot test iframe.contentWindow.location.hash since the second history
// traversal task is racing with the fire an event task, so we don't know
// which will happen first.
const event2 = await waitForHashchange(iframe.contentWindow);
assert_equals(event2.oldURL, baseURL + "#2", "oldURL 2");
assert_equals(event2.newURL, baseURL + "#3", "newURL 2");
assert_equals(iframe.contentWindow.location.hash, "#3");
}, "same-document traversals in the same (forward) direction: queue up");
</script>
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