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path: root/docshell/test/browser/browser_bug1328501.js
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const HTML_URL =
  "http://mochi.test:8888/browser/docshell/test/browser/file_bug1328501.html";
const FRAME_URL =
  "http://mochi.test:8888/browser/docshell/test/browser/file_bug1328501_frame.html";
const FRAME_SCRIPT_URL =
  "chrome://mochitests/content/browser/docshell/test/browser/file_bug1328501_framescript.js";
add_task(async function testMultiFrameRestore() {
  await SpecialPowers.pushPrefEnv({
    set: [
      ["browser.navigation.requireUserInteraction", false],
      // Disable bfcache so that dummy_page.html doesn't enter there.
      // The actual test page does already prevent bfcache and the test
      // is just for http-on-opening-request handling in the child process.
      ["browser.sessionhistory.max_total_viewers", 0],
    ],
  });
  await BrowserTestUtils.withNewTab(
    { gBrowser, url: HTML_URL },
    async function (browser) {
      // Navigate 2 subframes and load about:blank.
      let browserLoaded = BrowserTestUtils.browserLoaded(browser);
      await SpecialPowers.spawn(
        browser,
        [FRAME_URL],
        async function (FRAME_URL) {
          function frameLoaded(frame) {
            frame.contentWindow.location = FRAME_URL;
            return new Promise(r => (frame.onload = r));
          }
          let frame1 = content.document.querySelector("#testFrame1");
          let frame2 = content.document.querySelector("#testFrame2");
          ok(frame1, "check found testFrame1");
          ok(frame2, "check found testFrame2");
          await frameLoaded(frame1);
          await frameLoaded(frame2);
          content.location = "dummy_page.html";
        }
      );
      await browserLoaded;

      // Load a frame script to query nsIDOMWindow on "http-on-opening-request",
      // which will force about:blank content viewers being created.
      browser.messageManager.loadFrameScript(FRAME_SCRIPT_URL, false);

      // The frame script also forwards frames-loaded.
      let framesLoaded = BrowserTestUtils.waitForMessage(
        browser.messageManager,
        "test:frames-loaded"
      );

      browser.goBack();
      await framesLoaded;
      // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
      await new Promise(r => setTimeout(r, 1000));
      await SpecialPowers.spawn(browser, [FRAME_URL], FRAME_URL => {
        is(
          content.document.querySelector("#testFrame1").contentWindow.location
            .href,
          FRAME_URL
        );
        is(
          content.document.querySelector("#testFrame2").contentWindow.location
            .href,
          FRAME_URL
        );
      });
    }
  );
});