1 files changed, 51 insertions, 0 deletions
diff --git a/accessible/tests/browser/windows/ia2/browser_osPicker.js b/accessible/tests/browser/windows/ia2/browser_osPicker.js
new file mode 100644
index 0000000000..b14f2d0a5f
--- /dev/null
+++ b/accessible/tests/browser/windows/ia2/browser_osPicker.js
@@ -0,0 +1,51 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+addAccessibleTask(
+  `<input id="file" type="file">`,
+  async function (browser, docAcc) {
+    info("Focusing file input");
+    await runPython(`
+      global focused
+      focused = WaitForWinEvent(EVENT_OBJECT_FOCUS, "file")
+    `);
+    const file = findAccessibleChildByID(docAcc, "file");
+    file.takeFocus();
+    await runPython(`
+      focused.wait()
+    `);
+    ok(true, "file input got focus");
+    info("Opening file picker");
+    await runPython(`
+      global focused
+      focused = WaitForWinEvent(
+        EVENT_OBJECT_FOCUS,
+        lambda evt: getWindowClass(evt.hwnd) == "Edit"
+      )
+    `);
+    file.doAction(0);
+    await runPython(`
+      global event
+      event = focused.wait()
+    `);
+    ok(true, "Picker got focus");
+    info("Dismissing picker");
+    await runPython(`
+      # If the picker is dismissed too quickly, it seems to re-enable the root
+      # window before we do. This sleep isn't ideal, but it's more likely to
+      # reproduce the case that our root window gets focus before it is enabled.
+      # See bug 1883568 for further details.
+      import time
+      time.sleep(1)
+      focused = WaitForWinEvent(EVENT_OBJECT_FOCUS, "file")
+      # Sending key presses to the picker is unreliable, so use WM_CLOSE.
+      pickerRoot = user32.GetAncestor(event.hwnd, GA_ROOT)
+      user32.SendMessageW(pickerRoot, WM_CLOSE, 0, 0)
+      focused.wait()
+    `);
+    ok(true, "file input got focus");
+  }
+);