1 files changed, 28 insertions, 0 deletions
diff --git a/dom/events/test/browser_bug1539497.js b/dom/events/test/browser_bug1539497.js
new file mode 100644
index 0000000000..e52ec100e3
--- /dev/null
+++ b/dom/events/test/browser_bug1539497.js
@@ -0,0 +1,28 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function maxTouchPoints() {
+  await new Promise(resolve => {
+    SpecialPowers.pushPrefEnv(
+      {
+        set: [
+          ["dom.w3c_pointer_events.enabled", true],
+          ["dom.maxtouchpoints.testing.value", 5],
+        ],
+      },
+      resolve
+    );
+  });
+
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "data:text/html,Test page for navigator.maxTouchPoints"
+  );
+  await SpecialPowers.spawn(tab.linkedBrowser, [], function() {
+    is(content.navigator.maxTouchPoints, 5, "Should have touch points.");
+  });
+
+  BrowserTestUtils.removeTab(tab);
+});