tor-browser

commit b02234f56834d7c2e6b5676e1395ee9991165610
parent 035573a95082ea8a179981aad216f01013db910e
Author: Julian Descottes <jdescottes@mozilla.com>
Date:   Mon, 10 Nov 2025 16:58:23 +0000

Bug 1999229 - Add test for file-input-picker-opening notification r=dom-core,smaug

Moving the observer-notification to a dedicated bug to land it earlier if possible, so adding a simple browser mochitest.

Differential Revision: https://phabricator.services.mozilla.com/D271963

Diffstat:
M
dom/html/test/browser.toml
 | 
2
++
A
dom/html/test/browser_input_file_picker_opening_notification.js
 | 
81
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 83 insertions(+), 0 deletions(-)
diff --git a/dom/html/test/browser.toml b/dom/html/test/browser.toml
@@ -34,6 +34,8 @@ support-files = [
 
 ["browser_form_post_from_file_to_http.js"]
 
+["browser_input_file_picker_opening_notification.js"]
+
 ["browser_refresh_after_document_write.js"]
 support-files = ["file_refresh_after_document_write.html"]
 
diff --git a/dom/html/test/browser_input_file_picker_opening_notification.js b/dom/html/test/browser_input_file_picker_opening_notification.js
@@ -0,0 +1,81 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_URL =
+  "https://example.org/document-builder.sjs?html=<input type='file'>";
+
+const MockFilePicker = SpecialPowers.MockFilePicker;
+MockFilePicker.init(window.browsingContext);
+
+add_task(async _ => {
+  registerCleanupFunction(() => MockFilePicker.cleanup());
+
+  await testPickerOpeningNotification(gBrowser, { method: "input.click()" });
+  await testPickerOpeningNotification(gBrowser, {
+    method: "input.showPicker()",
+  });
+});
+
+async function testPickerOpeningNotification(gBrowser, { method }) {
+  info("Test the input-file-picker-opening notification for method=" + method);
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: TEST_URL,
+    },
+    async function (browser) {
+      const onPickerCanceled = new Promise(resolve => {
+        MockFilePicker.showCallback = function () {
+          resolve();
+          return Ci.nsIFilePicker.returnCancel;
+        };
+      });
+      await SpecialPowers.spawn(browser, [method], async function (_method) {
+        const fileInputElement = content.document.querySelector("input");
+
+        const waitForPickerOpeningNotification = () => {
+          return new Promise(resolve => {
+            Services.obs.addObserver(function onPickerOpening(subject) {
+              info(
+                "Received a file-input-picker-opening notification for subject: " +
+                  subject.outerHTML
+              );
+              is(
+                subject,
+                fileInputElement,
+                "Notification received for the expected input element"
+              );
+
+              Services.obs.removeObserver(
+                onPickerOpening,
+                "file-input-picker-opening"
+              );
+              resolve();
+            }, "file-input-picker-opening");
+          });
+        };
+
+        let onPickerOpeningNotification = waitForPickerOpeningNotification();
+        content.document.notifyUserGestureActivation();
+
+        info("Trigger the file picker to be displayed via " + _method);
+        if (_method == "input.click()") {
+          fileInputElement.click();
+        } else if (_method == "input.showPicker()") {
+          fileInputElement.showPicker();
+        } else {
+          throw new Error(
+            "Unsupported method for testPickerOpeningNotification: " + _method
+          );
+        }
+        info("Wait for the mock file picker showCallback to cancel the picker");
+        await onPickerOpeningNotification;
+      });
+
+      info("Wait for the file-input-picker-opening notification");
+      await onPickerCanceled;
+    }
+  );
+}