1 files changed, 97 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/browser_download.js b/dom/serviceworkers/test/browser_download.js
new file mode 100644
index 0000000000..271f217012
--- /dev/null
+++ b/dom/serviceworkers/test/browser_download.js
@@ -0,0 +1,97 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var { Downloads } = ChromeUtils.importESModule(
+  "resource://gre/modules/Downloads.sys.mjs"
+);
+
+var gTestRoot = getRootDirectory(gTestPath).replace(
+  "chrome://mochitests/content/",
+  "http://mochi.test:8888/"
+);
+
+function getFile(aFilename) {
+  if (aFilename.startsWith("file:")) {
+    var url = NetUtil.newURI(aFilename).QueryInterface(Ci.nsIFileURL);
+    return url.file.clone();
+  }
+
+  var file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
+  file.initWithPath(aFilename);
+  return file;
+}
+
+function windowObserver(win, topic) {
+  if (topic !== "domwindowopened") {
+    return;
+  }
+
+  win.addEventListener(
+    "load",
+    function() {
+      if (
+        win.document.documentURI ===
+        "chrome://mozapps/content/downloads/unknownContentType.xhtml"
+      ) {
+        executeSoon(function() {
+          let dialog = win.document.getElementById("unknownContentType");
+          let button = dialog.getButton("accept");
+          button.disabled = false;
+          dialog.acceptDialog();
+        });
+      }
+    },
+    { once: true }
+  );
+}
+
+function test() {
+  waitForExplicitFinish();
+
+  Services.ww.registerNotification(windowObserver);
+
+  SpecialPowers.pushPrefEnv(
+    {
+      set: [
+        ["dom.serviceWorkers.enabled", true],
+        ["dom.serviceWorkers.exemptFromPerDomainMax", true],
+        ["dom.serviceWorkers.testing.enabled", true],
+      ],
+    },
+    function() {
+      var url = gTestRoot + "download/window.html";
+      var tab = BrowserTestUtils.addTab(gBrowser);
+      gBrowser.selectedTab = tab;
+
+      Downloads.getList(Downloads.ALL)
+        .then(function(downloadList) {
+          var downloadListener;
+
+          function downloadVerifier(aDownload) {
+            if (aDownload.succeeded) {
+              var file = getFile(aDownload.target.path);
+              ok(file.exists(), "download completed");
+              is(file.fileSize, 33, "downloaded file has correct size");
+              file.remove(false);
+              downloadList.remove(aDownload).catch(console.error);
+              downloadList.removeView(downloadListener).catch(console.error);
+              gBrowser.removeTab(tab);
+              Services.ww.unregisterNotification(windowObserver);
+
+              executeSoon(finish);
+            }
+          }
+
+          downloadListener = {
+            onDownloadAdded: downloadVerifier,
+            onDownloadChanged: downloadVerifier,
+          };
+
+          return downloadList.addView(downloadListener);
+        })
+        .then(function() {
+          BrowserTestUtils.loadURI(gBrowser, url);
+        });
+    }
+  );
+}