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<!DOCTYPE html>
<meta charset="utf-8">
<title>srcdoc history entries</title>
<link rel="help" href="https://github.com/whatwg/html/issues/6809">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../../resources/helpers.js"></script>
<script>
"use strict";
// Note: bfcache won't mess with any windows with openers, so it doesn't
// interfere with these tests.
promise_test(async t => {
// Set up a window whose iframe contains
// [normal page, srcdoc, normal page, srcdoc] entries.
const w = await openWindow("/common/blank.html", t);
const iframe = await addIframe("/common/blank.html?iframe", w.document);
assert_equals(w.history.length, 1);
await waitToAvoidReplace(t);
iframe.srcdoc = srcdocThatPostsParentOpener("srcdoc1");
assert_equals(w.history.length, 1, "srcdoc navigation must not be sync");
await waitForMessage(iframe.contentWindow);
assert_equals(w.history.length, 2);
await waitToAvoidReplace(t);
const middleURL = (new URL(
"../../resources/post-top-opener-on-load.html", location.href)).href;
iframe.contentWindow.location.href = middleURL;
await waitForMessage(iframe.contentWindow);
assert_equals(w.history.length, 3);
await waitToAvoidReplace(t);
iframe.srcdoc = srcdocThatPostsParentOpener("srcdoc2");
assert_equals(w.history.length, 3, "srcdoc navigation must not be sync");
await waitForMessage(iframe.contentWindow);
assert_equals(w.history.length, 4);
// Now test traversal.
w.history.back();
await waitForMessage(iframe.contentWindow);
assert_equals(iframe.contentWindow.location.href, middleURL);
await waitToAvoidReplace(t);
w.history.back();
await waitForMessage(iframe.contentWindow);
assert_equals(iframe.contentWindow.location.href, "about:srcdoc");
assert_equals(
iframe.contentDocument.querySelector("p").textContent,
"srcdoc1",
"srcdoc contents must be restored from history, not from the current " +
"value ('srcdoc2') of the content attribute"
);
}, "srcdoc history entries: the iframe itself navigates");
promise_test(async t => {
// Set up a window whose iframe contains [normal page, srcdoc] entries.
const w = await openWindow("../../resources/has-iframe.html", t);
const iframe = w.document.querySelector("iframe");
assert_equals(w.history.length, 1);
await waitToAvoidReplace(t);
iframe.srcdoc = srcdocThatPostsParentOpener("srcdoc1");
assert_equals(w.history.length, 1, "srcdoc navigation must not be sync");
await waitForMessage(iframe.contentWindow);
assert_equals(w.history.length, 2);
// Now navigate the window itself.
w.location.href = "../../resources/post-top-opener-on-load.html";
await waitForMessage(w);
assert_equals(w.history.length, 3);
// Now test traversal.
w.history.back();
await waitForMessage(w);
const iframeAgain = w.document.querySelector("iframe");
assert_equals(iframeAgain.contentWindow.location.href, "about:srcdoc");
assert_equals(
iframeAgain.contentDocument?.querySelector("p")?.textContent,
"srcdoc1",
"srcdoc contents must be restored from history, not from the current " +
"value of the (not-existing) content attribute"
);
}, "srcdoc history entries: the container window navigates");
</script>
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