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path: root/docshell/test/navigation/browser_bug1757458.js
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/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

add_task(async function() {
  let testPage =
    getRootDirectory(gTestPath).replace(
      "chrome://mochitests/content",
      "view-source:http://example.com"
    ) + "redirect_to_blank.sjs";

  let testPage2 = "data:text/html,<div>Second page</div>";
  await BrowserTestUtils.withNewTab({ gBrowser, url: testPage }, async function(
    browser
  ) {
    await ContentTask.spawn(browser, [], async () => {
      Assert.ok(
        content.document.getElementById("viewsource").localName == "body",
        "view-source document's body should have id='viewsource'."
      );
      content.document
        .getElementById("viewsource")
        .setAttribute("onunload", "/* disable bfcache*/");
    });

    BrowserTestUtils.loadURI(browser, testPage2);
    await BrowserTestUtils.browserLoaded(browser);

    let pageShownPromise = BrowserTestUtils.waitForContentEvent(
      browser,
      "pageshow",
      true
    );
    browser.browsingContext.goBack();
    await pageShownPromise;

    await ContentTask.spawn(browser, [], async () => {
      Assert.ok(
        content.document.getElementById("viewsource").localName == "body",
        "view-source document's body should have id='viewsource'."
      );
    });
  });
});