docshell/test/browser/browser_bug1674464.js


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const DUMMY_1 =
  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
  "http://example.org/browser/docshell/test/browser/dummy_page.html";
const DUMMY_2 =
  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
  "http://example.com/browser/docshell/test/browser/dummy_page.html";

add_task(async function test_backAndReload() {
  await BrowserTestUtils.withNewTab({ gBrowser, url: DUMMY_1 }, async function(
    browser
  ) {
    await BrowserTestUtils.crashFrame(browser);

    info("Start second load.");
    BrowserTestUtils.loadURI(browser, DUMMY_2);
    await BrowserTestUtils.waitForLocationChange(gBrowser, DUMMY_2);

    browser.goBack();
    await BrowserTestUtils.waitForLocationChange(gBrowser);

    is(
      browser.browsingContext.childSessionHistory.index,
      0,
      "We should have gone back to the first page"
    );
    is(
      browser.browsingContext.childSessionHistory.count,
      2,
      "If a tab crashes after a load has finished we shouldn't have an entry for about:tabcrashed"
    );
    is(
      browser.documentURI.spec,
      DUMMY_1,
      "If a tab crashes after a load has finished we shouldn't have an entry for about:tabcrashed"
    );
  });
});