dom/url/tests/browser_download_after_revoke.js

   1 async function test() {
   2   waitForExplicitFinish();
   3   const target = "http://example.com/browser/dom/url/tests/empty.html";
   4   info("Loading download page...");
   5   let tab = BrowserTestUtils.addTab(gBrowser, target);
   6   registerCleanupFunction(function () {
   7     gBrowser.removeTab(tab);
   8     window.restore();
   9   });
  10   gBrowser.selectedTab = tab;
  11   BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, target).then(
  12     async () => {
  13       info("Page loaded.");
  14       let allDownloads = await Downloads.getList(Downloads.ALL);
  15       let started = new Promise(resolve => {
  16         if (
  17           Services.prefs.getBoolPref(
  18             "browser.download.always_ask_before_handling_new_types",
  19             false
  20           )
  21         ) {
  22           // If the download modal is enabled, wait for it to open and declare the
  23           // download to have begun when we see it.
  24           let listener = {
  25             onOpenWindow(aXULWindow) {
  26               info("Download modal shown...");
  27               Services.wm.removeListener(listener);
  28
  29               let domwindow = aXULWindow.docShell.domWindow;
  30               function onModalLoad() {
  31                 domwindow.removeEventListener("load", onModalLoad, true);
  32
  33                 is(
  34                   domwindow.document.location.href,
  35                   "chrome://mozapps/content/downloads/unknownContentType.xhtml",
  36                   "Download modal loaded..."
  37                 );
  38
  39                 domwindow.close();
  40                 info("Download modal closed.");
  41                 resolve();
  42               }
  43
  44               domwindow.addEventListener("load", onModalLoad, true);
  45             },
  46             onCloseWindow() {},
  47           };
  48
  49           Services.wm.addListener(listener);
  50         } else {
  51           // With no download modal, the download will begin on its own, so we need
  52           // to wait to be notified by the downloads list when that happens.
  53           let downloadView = {
  54             onDownloadAdded(download) {
  55               ok(true, "Download was started.");
  56               download.cancel();
  57               allDownloads.removeView(this);
  58               allDownloads.removeFinished();
  59               resolve();
  60             },
  61           };
  62           allDownloads.addView(downloadView);
  63         }
  64       });
  65
  66       let revoked = SpecialPowers.spawn(
  67         tab.linkedBrowser,
  68         [],
  69         () =>
  70           new Promise(resolve => {
  71             info("Creating BlobURL...");
  72             let blob = new content.Blob(["test"], { type: "text/plain" });
  73             let url = content.URL.createObjectURL(blob);
  74
  75             let link = content.document.createElement("a");
  76             link.href = url;
  77             link.download = "example.txt";
  78             content.document.body.appendChild(link);
  79             info("Clicking HTMLAnchorElement...");
  80             link.click();
  81
  82             content.URL.revokeObjectURL(url);
  83             info("BlobURL revoked.");
  84             resolve();
  85           })
  86       );
  87
  88       info("Waiting for async activities...");
  89       await Promise.all([revoked, started]);
  90       ok(true, "Exiting test.");
  91       finish();
  92     }
  93   );
  94 }