1 files changed, 102 insertions, 0 deletions
diff --git a/accessible/tests/browser/events/browser_test_caret_move_granularity.js b/accessible/tests/browser/events/browser_test_caret_move_granularity.js
new file mode 100644
index 0000000000..c72ae42d85
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_caret_move_granularity.js
@@ -0,0 +1,102 @@
+/* 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";
+
+const CLUSTER_AMOUNT = Ci.nsISelectionListener.CLUSTER_AMOUNT;
+const WORD_AMOUNT = Ci.nsISelectionListener.WORD_AMOUNT;
+const LINE_AMOUNT = Ci.nsISelectionListener.LINE_AMOUNT;
+const BEGINLINE_AMOUNT = Ci.nsISelectionListener.BEGINLINE_AMOUNT;
+const ENDLINE_AMOUNT = Ci.nsISelectionListener.ENDLINE_AMOUNT;
+
+const isMac = AppConstants.platform == "macosx";
+
+function matchCaretMoveEvent(id, caretOffset) {
+  return evt => {
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    return (
+      getAccessibleDOMNodeID(evt.accessible) == id &&
+      evt.caretOffset == caretOffset
+    );
+  };
+}
+
+addAccessibleTask(
+  `<textarea id="textarea" style="scrollbar-width: none;" cols="15">` +
+    `one two three four five six seven eight` +
+    `</textarea>`,
+  async function (browser, accDoc) {
+    const textarea = findAccessibleChildByID(accDoc, "textarea");
+    let caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 0)
+    );
+    textarea.takeFocus();
+    let evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 1)
+    );
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, CLUSTER_AMOUNT, "Caret moved by cluster");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 15)
+    );
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    todo(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, LINE_AMOUNT, "Caret moved by line");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 14)
+    );
+    if (isMac) {
+      EventUtils.synthesizeKey("KEY_ArrowLeft", { metaKey: true });
+    } else {
+      EventUtils.synthesizeKey("KEY_Home");
+    }
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, BEGINLINE_AMOUNT, "Caret moved to line start");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 28)
+    );
+    if (isMac) {
+      EventUtils.synthesizeKey("KEY_ArrowRight", { metaKey: true });
+    } else {
+      EventUtils.synthesizeKey("KEY_End");
+    }
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(evt.isAtEndOfLine, "Caret is at end of line");
+    is(evt.granularity, ENDLINE_AMOUNT, "Caret moved to line end");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 24)
+    );
+    if (isMac) {
+      EventUtils.synthesizeKey("KEY_ArrowLeft", { altKey: true });
+    } else {
+      EventUtils.synthesizeKey("KEY_ArrowLeft", { ctrlKey: true });
+    }
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, WORD_AMOUNT, "Caret moved by word");
+  }
+);