1 files changed, 75 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_tab_touch_events.js b/docshell/test/browser/browser_tab_touch_events.js
new file mode 100644
index 0000000000..c73b01e45c
--- /dev/null
+++ b/docshell/test/browser/browser_tab_touch_events.js
@@ -0,0 +1,75 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function () {
+  const URI = "data:text/html;charset=utf-8,<iframe id='test-iframe'></iframe>";
+
+  await BrowserTestUtils.withNewTab(
+    { gBrowser, url: URI },
+    async function (browser) {
+      await SpecialPowers.spawn(browser, [], test_init);
+
+      browser.browsingContext.touchEventsOverride = "disabled";
+
+      await SpecialPowers.spawn(browser, [], test_body);
+    }
+  );
+});
+
+async function test_init() {
+  is(
+    content.browsingContext.touchEventsOverride,
+    "none",
+    "touchEventsOverride flag should be initially set to NONE"
+  );
+}
+
+async function test_body() {
+  let bc = content.browsingContext;
+  is(
+    bc.touchEventsOverride,
+    "disabled",
+    "touchEventsOverride flag should be changed to DISABLED"
+  );
+
+  let frameWin = content.document.querySelector("#test-iframe").contentWindow;
+  bc = frameWin.browsingContext;
+  is(
+    bc.touchEventsOverride,
+    "disabled",
+    "touchEventsOverride flag should be passed on to frames."
+  );
+
+  let newFrame = content.document.createElement("iframe");
+  content.document.body.appendChild(newFrame);
+
+  let newFrameWin = newFrame.contentWindow;
+  bc = newFrameWin.browsingContext;
+  is(
+    bc.touchEventsOverride,
+    "disabled",
+    "Newly created frames should use the new touchEventsOverride flag"
+  );
+
+  // Wait for the non-transient about:blank to load.
+  await ContentTaskUtils.waitForEvent(newFrame, "load");
+  newFrameWin = newFrame.contentWindow;
+  bc = newFrameWin.browsingContext;
+  is(
+    bc.touchEventsOverride,
+    "disabled",
+    "Newly created frames should use the new touchEventsOverride flag"
+  );
+
+  newFrameWin.location.reload();
+  await ContentTaskUtils.waitForEvent(newFrame, "load");
+  newFrameWin = newFrame.contentWindow;
+  bc = newFrameWin.browsingContext;
+  is(
+    bc.touchEventsOverride,
+    "disabled",
+    "New touchEventsOverride flag should persist across reloads"
+  );
+}