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Added tentative tests for location.ancestorOrigins
This follows the current revamping of the spec found at whatwg/html#11560 and will change with it, potentially.
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‎testing/web-platform/tests/html/browsers/history/the-location-interface/location-ancestor-origins.sub.html‎

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<!DOCTYPE html>
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<title>
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Location#ancestorOrigins test
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</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/resources/testdriver.js"></script>
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<script src="/resources/testdriver-vendor.js"></script>
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<script src="./resources/create-iframe.js"></script>
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<body>
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<script>
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function waitFor(action, frameName) {
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return new Promise((resolve) => {
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window.addEventListener("message", function listener(e) {
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if (e.data.event === action && e.data.name === frameName) {
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window.removeEventListener("message", listener);
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resolve(event.data);
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}
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});
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});
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}
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const frameCreatorPath = "html/browsers/history/the-location-interface/resources/recursive-iframe.html"
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// first src shares origin with self.origin here
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let iframeSources = [
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{
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src: `http://{{hosts[][]}}:{{ports[http][0]}}/${frameCreatorPath}?a`,
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},
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{
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src: `http://{{hosts[alt][]}}:{{ports[http][0]}}/${frameCreatorPath}?b`,
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},
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{
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src: `http://{{hosts[][www]}}:{{ports[http][0]}}/${frameCreatorPath}?c`,
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},
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];
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// origins A, B, C
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iframeSources.forEach(f => {
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const url = new URL(f.src, location.origin);
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f.origin = url.origin;
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})
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const A = iframeSources[0]
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const B = iframeSources[1];
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const C = iframeSources[2];
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const policy = {
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Default: "",
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NoRef: "no-referrer",
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Same: "same-origin"
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}
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const config = (name, f, referrerPolicy, sandbox = false) => ({ name: name, src: f.src, referrerPolicy: referrerPolicy, sandbox: sandbox })
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// Remember the implicit top-level origin A
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const testCases = [
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{ // test no-referrer on iframe
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frames: [
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config("B1", B, policy.NoRef)
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],
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expected: [
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["null"]
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]
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},
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{ // test all default referrer policy
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frames: [
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config("B1", B, policy.Default),
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config("A2", A, policy.Default)
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],
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expected: [
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[A.origin],
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[B.origin, A.origin]
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]
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},
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{ // test toggle of masked
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frames: [
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config("B1", B, policy.Default),
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config("A2", A, policy.NoRef)
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],
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expected: [
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[A.origin],
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["null", A.origin]
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]
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},
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{ // another test of toggle of masked
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frames: [
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config("B1", B, policy.Default),
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config("B2", B, policy.Default),
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config("A2", A, policy.NoRef)
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],
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expected: [
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[A.origin],
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[B.origin, A.origin],
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["null", "null", A.origin]
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]
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},
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{ // test sandboxed/opaque origin frames
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frames: [
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config("C1", C, policy.Default, /* sandbox */ true),
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config("B2", B, policy.Default),
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],
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expected: [
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[A.origin],
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["null", A.origin],
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]
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},
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{ // 5 - Test same-origin referrer policy
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frames: [
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config("B1", B, policy.Default),
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config("A2", A, policy.Default),
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config("B2", B, policy.Same)
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],
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expected: [
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[A.origin],
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[B.origin, A.origin],
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["null", B.origin, A.origin]
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]
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}
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]
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testCases.forEach((cfg, index) => {
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promise_test(async (t) => {
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const iframeDetails = cfg.frames[0];
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const topFrameAncestorOrigins = waitFor("sentOrigins", iframeDetails.name);
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const iframe = document.createElement("iframe");
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await configAndNavigateIFrame(iframe, iframeDetails);
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const res = await topFrameAncestorOrigins;
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t.add_cleanup(() => {
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iframe.remove();
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});
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let results = [res];
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for(let i = 1; i < cfg.frames.length; ++i) {
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// name of frame, that shall create a new frame
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const parentName = cfg.frames[i - 1].name;
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iframe.contentWindow.postMessage({ action: "addIframe", request: cfg.frames[i], name: parentName }, "*");
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const res = await waitFor("sentOrigins", cfg.frames[i].name);
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results.push(res);
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}
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let i = 0;
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for(const { event, name, origins } of results) {
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assert_equals(origins.length, cfg.expected[i].length, `[test configuration ${index}, frame ${name}]: Unexpected length of ancestorOrigins list`);
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for(let j = 0; j < origins.length; ++j) {
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assert_equals(origins[j], cfg.expected[i][j], `[test configuration ${index}, frame ${name}]: Unexpected origin`)
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}
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i+=1;
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}
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}, `Location.ancestorOrigins configuration ${index}`);
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})
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</script>
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</body>

‎testing/web-platform/tests/html/browsers/history/the-location-interface/resources/create-iframe.js‎

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async function configAndNavigateIFrame(iframe, { src, name, referrerPolicy, sandbox}) {
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iframe.name = name;
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iframe.style.width = "100%";
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iframe.style.height = "100%";
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iframe.referrerPolicy = referrerPolicy
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if (sandbox) {
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// postMessage needs to work
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iframe.setAttribute("sandbox", "allow-scripts");
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}
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document.body.appendChild(iframe);
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await new Promise((resolve) => {
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iframe.addEventListener("load", resolve, { once: true });
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iframe.src = src;
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});
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}

‎testing/web-platform/tests/html/browsers/history/the-location-interface/resources/recursive-iframe.html‎

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<!DOCTYPE html>
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<meta charset="utf-8" />
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<title>Recursive IFrame Fullscreen API success reporter</title>
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<body>
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<script src="/resources/testdriver.js"></script>
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<script src="/resources/testdriver-vendor.js"></script>
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<script src="./create-iframe.js"></script>
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<script>
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let iframe = null;
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window.addEventListener("message", async (e) => {
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// Massage is not for us, try to pass it on...
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if (e.data.name !== window.name) {
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iframe?.contentWindow.postMessage(e.data, "*");
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return;
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}
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switch (e.data.action) {
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case "addIframe":
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iframe = document.createElement("iframe");
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await configAndNavigateIFrame(iframe, e.data.request);
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break;
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default:
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window.top.postMessage(e.data, "*");
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}
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});
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let origs = location.ancestorOrigins;
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let origins = [];
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for(let i = 0; i < origs.length; ++i) {
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origins.push(origs.item(i));
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}
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window.top.postMessage({ event: "sentOrigins", name: window.name, origins: origins }, "*");
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</script>
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</body>
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