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+<!DOCTYPE HTML>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Test history after loading multipart</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
+ <script>
+ SimpleTest.waitForExplicitFinish();
+
+ function runTest() {
+ let bc = new BroadcastChannel("bug1747033");
+ new Promise(resolve => {
+ bc.addEventListener("message", ({ data: { historyLength } }) => {
+ is(historyLength, 1, "Correct length for first normal load.");
+
+ resolve();
+ }, { once: true });
+
+ window.open("file_bug1747033.sjs", "", "noopener");
+ }).then(() => {
+ return new Promise(resolve => {
+ let loaded = 0;
+ bc.addEventListener("message", function listener({ data: { historyLength } }) {
+ ++loaded;
+
+ is(historyLength, 2, `Correct length for multipart load ${loaded}.`);
+
+ // We want 3 parts in total.
+ if (loaded < 3) {
+ if (loaded == 2) {
+ // We've had 2 parts, make the server send the last part.
+ fetch("file_bug1747033.sjs?sendLastPart");
+ } else {
+ fetch("file_bug1747033.sjs?sendNextPart");
+ }
+ return;
+ }
+
+ bc.removeEventListener("message", listener);
+ resolve();
+ });
+
+ bc.postMessage({ cmd: "load", arg: "file_bug1747033.sjs?multipart" });
+ });
+ }).then(() => {
+ return new Promise(resolve => {
+ bc.addEventListener("message", ({ data: { historyLength } }) => {
+ is(historyLength, 2, "Correct length after calling replaceState in multipart.");
+
+ resolve();
+ }, { once: true });
+
+ bc.postMessage({ cmd: "replaceState", arg: "file_bug1747033.sjs?replaced" });
+ });
+ }).then(() => {
+ return new Promise(resolve => {
+ bc.addEventListener("message", ({ data: { historyLength } }) => {
+ is(historyLength, 3, "Correct length for first normal load after multipart.");
+
+ resolve();
+ }, { once: true });
+
+ bc.postMessage({ cmd: "load", arg: "file_bug1747033.sjs" });
+ });
+ }).then(() => {
+ return new Promise(resolve => {
+ let goneBack = 0;
+ bc.addEventListener("message", function listener({ data: { historyLength } }) {
+ ++goneBack;
+
+ is(historyLength, 3, "Correct length after going back.");
+
+ if (goneBack == 1) {
+ bc.postMessage({ cmd: "back" });
+ } else if (goneBack == 2) {
+ bc.removeEventListener("message", listener);
+ resolve();
+ }
+ });
+
+ bc.postMessage({ cmd: "back" });
+ });
+ }).then(() => {
+ bc.postMessage({ cmd: "close" });
+
+ SimpleTest.finish();
+ });
+ }
+ </script>
+</head>
+<body onload="runTest();">
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+</body>
+</html>