browser_docshell_uuid_consistency.js

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// First test - open a tab and duplicate it, using session restore to restore the history into the new tab.

add_task(async function duplicateTab() {

  const TEST_URL = "data:text/html,foo";

  let tab = BrowserTestUtils.addTab(gBrowser, TEST_URL);

  await BrowserTestUtils.browserLoaded(tab.linkedBrowser);

  let historyID = tab.linkedBrowser.browsingContext.historyID;

  let shEntry =

    tab.linkedBrowser.browsingContext.sessionHistory.getEntryAtIndex(0);

  is(shEntry.docshellID.toString(), historyID.toString());

  let tab2 = gBrowser.duplicateTab(tab);

  await BrowserTestUtils.browserLoaded(tab2.linkedBrowser);

  historyID = tab2.linkedBrowser.browsingContext.historyID;

  shEntry =

    tab2.linkedBrowser.browsingContext.sessionHistory.getEntryAtIndex(0);

  is(shEntry.docshellID.toString(), historyID.toString());

  BrowserTestUtils.removeTab(tab);

  BrowserTestUtils.removeTab(tab2);

});

// Second test - open a tab and navigate across processes, which triggers sessionrestore to persist history.

add_task(async function contentToChromeNavigate() {

  const TEST_URL = "data:text/html,foo";

  let tab = BrowserTestUtils.addTab(gBrowser, TEST_URL);

  await BrowserTestUtils.browserLoaded(tab.linkedBrowser);

  let historyID = tab.linkedBrowser.browsingContext.historyID;

  let sh = tab.linkedBrowser.browsingContext.sessionHistory;

  is(sh.count, 1);

  is(sh.getEntryAtIndex(0).docshellID.toString(), historyID.toString());

  // Force the browser to navigate to the chrome process.

  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, "about:config");

  await BrowserTestUtils.browserLoaded(tab.linkedBrowser);

  // Check to be sure that we're in the chrome process.

  let docShell = tab.linkedBrowser.frameLoader.docShell;

  // 'cause we're in the chrome process, we can just directly poke at the shistory.

  sh = docShell.browsingContext.sessionHistory;

  is(sh.count, 2);

is(

    sh.getEntryAtIndex(0).docshellID.toString(),

    docShell.historyID.toString()

);

is(

    sh.getEntryAtIndex(1).docshellID.toString(),

    docShell.historyID.toString()

);

  BrowserTestUtils.removeTab(tab);

});