1 files changed, 60 insertions, 0 deletions
diff --git a/uriloader/exthandler/tests/mochitest/browser_download_skips_dialog.js b/uriloader/exthandler/tests/mochitest/browser_download_skips_dialog.js
new file mode 100644
index 0000000000..8cc9d68a07
--- /dev/null
+++ b/uriloader/exthandler/tests/mochitest/browser_download_skips_dialog.js
@@ -0,0 +1,60 @@
+const { DownloadIntegration } = ChromeUtils.importESModule(
+  "resource://gre/modules/DownloadIntegration.sys.mjs"
+);
+
+const TEST_PATH = getRootDirectory(gTestPath).replace(
+  "chrome://mochitests/content",
+  "https://example.com"
+);
+
+// New file is being downloaded and no dialogs are shown in the way.
+add_task(async function skipDialogAndDownloadFile() {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.download.always_ask_before_handling_new_types", false],
+      ["browser.download.useDownloadDir", true],
+      ["image.webp.enabled", true],
+    ],
+  });
+
+  let publicList = await Downloads.getList(Downloads.PUBLIC);
+  registerCleanupFunction(async () => {
+    await publicList.removeFinished();
+  });
+  let downloadFinishedPromise = promiseDownloadFinished(publicList);
+
+  let initialTabsCount = gBrowser.tabs.length;
+
+  let loadingTab = await BrowserTestUtils.openNewForegroundTab({
+    gBrowser,
+    opening: TEST_PATH + "file_green.webp",
+    waitForLoad: false,
+    waitForStateStop: true,
+  });
+
+  // We just open the file to be downloaded... and wait for it to be downloaded!
+  // We see no dialogs to be accepted in the process.
+  let download = await downloadFinishedPromise;
+  await BrowserTestUtils.waitForCondition(
+    () => gBrowser.tabs.length == initialTabsCount + 2
+  );
+
+  gBrowser.removeCurrentTab();
+  BrowserTestUtils.removeTab(loadingTab);
+
+  Assert.ok(
+    await IOUtils.exists(download.target.path),
+    "The file should have been downloaded."
+  );
+
+  try {
+    info("removing " + download.target.path);
+    if (Services.appinfo.OS === "WINNT") {
+      // We need to make the file writable to delete it on Windows.
+      await IOUtils.setPermissions(download.target.path, 0o600);
+    }
+    await IOUtils.remove(download.target.path);
+  } catch (ex) {
+    info("The file " + download.target.path + " is not removed, " + ex);
+  }
+});