1 files changed, 87 insertions, 0 deletions
diff --git a/accessible/tests/browser/e10s/browser_events_vcchange.js b/accessible/tests/browser/e10s/browser_events_vcchange.js
new file mode 100644
index 0000000000..8ba59d8a1d
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_events_vcchange.js
@@ -0,0 +1,87 @@
+/* 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(
+  `
+  <p id="p1">abc</p>
+  <input id="input1" value="input" />`,
+  async function(browser) {
+    let onVCChanged = waitForEvent(
+      EVENT_VIRTUALCURSOR_CHANGED,
+      matchContentDoc
+    );
+    await invokeContentTask(browser, [], () => {
+      const { CommonUtils } = ChromeUtils.importESModule(
+        "chrome://mochitests/content/browser/accessible/tests/browser/Common.sys.mjs"
+      );
+      let vc = CommonUtils.getAccessible(
+        content.document,
+        Ci.nsIAccessibleDocument
+      ).virtualCursor;
+      vc.position = CommonUtils.getAccessible(
+        "p1",
+        null,
+        null,
+        null,
+        content.document
+      );
+    });
+    let vccEvent = (await onVCChanged).QueryInterface(
+      nsIAccessibleVirtualCursorChangeEvent
+    );
+    is(vccEvent.newAccessible.id, "p1", "New position is correct");
+    is(vccEvent.newStartOffset, -1, "New start offset is correct");
+    is(vccEvent.newEndOffset, -1, "New end offset is correct");
+    ok(!vccEvent.isFromUserInput, "not user initiated");
+
+    onVCChanged = waitForEvent(EVENT_VIRTUALCURSOR_CHANGED, matchContentDoc);
+    await invokeContentTask(browser, [], () => {
+      const { CommonUtils } = ChromeUtils.importESModule(
+        "chrome://mochitests/content/browser/accessible/tests/browser/Common.sys.mjs"
+      );
+      let vc = CommonUtils.getAccessible(
+        content.document,
+        Ci.nsIAccessibleDocument
+      ).virtualCursor;
+      vc.moveNextByText(Ci.nsIAccessiblePivot.CHAR_BOUNDARY);
+    });
+    vccEvent = (await onVCChanged).QueryInterface(
+      nsIAccessibleVirtualCursorChangeEvent
+    );
+    is(vccEvent.newAccessible.id, vccEvent.oldAccessible.id, "Same position");
+    is(vccEvent.newStartOffset, 0, "New start offset is correct");
+    is(vccEvent.newEndOffset, 1, "New end offset is correct");
+    ok(vccEvent.isFromUserInput, "user initiated");
+
+    onVCChanged = waitForEvent(EVENT_VIRTUALCURSOR_CHANGED, matchContentDoc);
+    await invokeContentTask(browser, [], () => {
+      const { CommonUtils } = ChromeUtils.importESModule(
+        "chrome://mochitests/content/browser/accessible/tests/browser/Common.sys.mjs"
+      );
+      let vc = CommonUtils.getAccessible(
+        content.document,
+        Ci.nsIAccessibleDocument
+      ).virtualCursor;
+      vc.position = CommonUtils.getAccessible(
+        "input1",
+        null,
+        null,
+        null,
+        content.document
+      );
+    });
+    vccEvent = (await onVCChanged).QueryInterface(
+      nsIAccessibleVirtualCursorChangeEvent
+    );
+    isnot(vccEvent.oldAccessible, vccEvent.newAccessible, "positions differ");
+    is(vccEvent.oldAccessible.id, "p1", "Old position is correct");
+    is(vccEvent.newAccessible.id, "input1", "New position is correct");
+    is(vccEvent.newStartOffset, -1, "New start offset is correct");
+    is(vccEvent.newEndOffset, -1, "New end offset is correct");
+    ok(!vccEvent.isFromUserInput, "not user initiated");
+  },
+  { iframe: true, remoteIframe: true }
+);