tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_onbeforeunload_only_after_interaction.js (2265B)

      1 const { PromptTestUtils } = ChromeUtils.importESModule(
      2  "resource://testing-common/PromptTestUtils.sys.mjs"
      3 );
      4 
      5 function pageScript() {
      6  window.addEventListener(
      7    "beforeunload",
      8    function (event) {
      9      var str = "Some text that causes the beforeunload dialog to be shown";
     10      event.returnValue = str;
     11      return str;
     12    },
     13    true
     14  );
     15 }
     16 
     17 SpecialPowers.pushPrefEnv({
     18  set: [["dom.require_user_interaction_for_beforeunload", true]],
     19 });
     20 
     21 const PAGE_URL =
     22  "data:text/html," +
     23  encodeURIComponent("<script>(" + pageScript.toSource() + ")();</script>");
     24 
     25 add_setup(async function () {
     26  await SpecialPowers.pushPrefEnv({
     27    set: [["test.wait300msAfterTabSwitch", true]],
     28  });
     29 });
     30 
     31 add_task(async function doClick() {
     32  // The onbeforeunload dialog should appear.
     33  let dialogPromise = PromptTestUtils.waitForPrompt(null, {
     34    modalType: Services.prompt.MODAL_TYPE_CONTENT,
     35    promptType: "confirmEx",
     36  });
     37 
     38  let openPagePromise = openPage(true);
     39  let dialog = await dialogPromise;
     40  Assert.ok(true, "Showed the beforeunload dialog.");
     41 
     42  await PromptTestUtils.handlePrompt(dialog, { buttonNumClick: 0 });
     43  await openPagePromise;
     44 });
     45 
     46 add_task(async function noClick() {
     47  // The onbeforeunload dialog should NOT appear.
     48  await openPage(false);
     49  info("If we time out here, then the dialog was shown...");
     50 });
     51 
     52 async function openPage(shouldClick) {
     53  // Open about:blank in a new tab.
     54  await BrowserTestUtils.withNewTab(
     55    { gBrowser, url: "about:blank" },
     56    async function (browser) {
     57      // Load the page.
     58      BrowserTestUtils.startLoadingURIString(browser, PAGE_URL);
     59      await BrowserTestUtils.browserLoaded(browser);
     60 
     61      if (shouldClick) {
     62        await BrowserTestUtils.synthesizeMouse("body", 2, 2, {}, browser);
     63      }
     64      let hasInteractedWith = await SpecialPowers.spawn(
     65        browser,
     66        [""],
     67        function () {
     68          return content.document.hasBeenUserGestureActivated;
     69        }
     70      );
     71      is(
     72        shouldClick,
     73        hasInteractedWith,
     74        "Click should update document interactivity state"
     75      );
     76      // And then navigate away.
     77      BrowserTestUtils.startLoadingURIString(browser, "http://example.com/");
     78      await BrowserTestUtils.browserLoaded(browser);
     79    }
     80  );
     81 }