1 files changed, 121 insertions, 0 deletions
diff --git a/uriloader/exthandler/tests/mochitest/browser_pdf_save_as.js b/uriloader/exthandler/tests/mochitest/browser_pdf_save_as.js
new file mode 100644
index 0000000000..a08fe342cc
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+++ b/uriloader/exthandler/tests/mochitest/browser_pdf_save_as.js
@@ -0,0 +1,121 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const HandlerService = Cc[
+  "@mozilla.org/uriloader/handler-service;1"
+].getService(Ci.nsIHandlerService);
+const MIMEService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
+
+const TEST_PATH = getRootDirectory(gTestPath).replace(
+  "chrome://mochitests/content",
+  "https://example.com"
+);
+
+const { saveToDisk, alwaysAsk, handleInternally, useSystemDefault } =
+  Ci.nsIHandlerInfo;
+const MockFilePicker = SpecialPowers.MockFilePicker;
+MockFilePicker.init(window);
+
+async function testPdfFilePicker(mimeInfo) {
+  await BrowserTestUtils.withNewTab(
+    `data:text/html,<a id="test-link" href="${TEST_PATH}/file_pdf_application_pdf.pdf">Test PDF Link</a>`,
+    async browser => {
+      let menu = document.getElementById("contentAreaContextMenu");
+      ok(menu, "Context menu exists on the page");
+
+      let popupShown = BrowserTestUtils.waitForEvent(menu, "popupshown");
+      BrowserTestUtils.synthesizeMouseAtCenter(
+        "a#test-link",
+        { type: "contextmenu", button: 2 },
+        browser
+      );
+      await popupShown;
+      info("Context menu popup was successfully displayed");
+
+      let filePickerPromise = new Promise(resolve => {
+        MockFilePicker.showCallback = fp => {
+          ok(true, "filepicker should be visible");
+          ok(
+            fp.defaultExtension === "pdf",
+            "Default extension in filepicker should be pdf"
+          );
+          ok(
+            fp.defaultString === "file_pdf_application_pdf.pdf",
+            "Default string name in filepicker should have the correct pdf file name"
+          );
+          setTimeout(resolve, 0);
+          return Ci.nsIFilePicker.returnCancel;
+        };
+      });
+
+      let menuitem = menu.querySelector("#context-savelink");
+      menu.activateItem(menuitem);
+      await filePickerPromise;
+    }
+  );
+}
+
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.download.always_ask_before_handling_new_types", false],
+      ["browser.download.useDownloadDir", false],
+    ],
+  });
+
+  registerCleanupFunction(async () => {
+    let publicList = await Downloads.getList(Downloads.PUBLIC);
+    await publicList.removeFinished();
+
+    if (DownloadsPanel.isVisible) {
+      info("Closing downloads panel");
+      let hiddenPromise = BrowserTestUtils.waitForEvent(
+        DownloadsPanel.panel,
+        "popuphidden"
+      );
+      DownloadsPanel.hidePanel();
+      await hiddenPromise;
+    }
+
+    let mimeInfo = MIMEService.getFromTypeAndExtension(
+      "application/pdf",
+      "pdf"
+    );
+    let existed = HandlerService.exists(mimeInfo);
+    if (existed) {
+      HandlerService.store(mimeInfo);
+    } else {
+      HandlerService.remove(mimeInfo);
+    }
+
+    // We only want to run MockFilerPicker.cleanup after the entire test is run.
+    // Otherwise, we cannot use MockFilePicker for each preferredAction.
+    MockFilePicker.cleanup();
+  });
+});
+
+/**
+ * Tests that selecting the context menu item `Save Link As…` on a PDF link
+ * opens the file picker when always_ask_before_handling_new_types is disabled,
+ * regardless of preferredAction.
+ */
+add_task(async function test_pdf_save_as_link() {
+  let mimeInfo;
+
+  for (let preferredAction of [
+    saveToDisk,
+    alwaysAsk,
+    handleInternally,
+    useSystemDefault,
+  ]) {
+    mimeInfo = MIMEService.getFromTypeAndExtension("application/pdf", "pdf");
+    mimeInfo.alwaysAskBeforeHandling = preferredAction === alwaysAsk;
+    mimeInfo.preferredAction = preferredAction;
+    HandlerService.store(mimeInfo);
+
+    info(`Testing filepicker for preferredAction ${preferredAction}`);
+    await testPdfFilePicker(mimeInfo);
+  }
+});