1 files changed, 40 insertions, 0 deletions
diff --git a/dom/tests/browser/browser_wakelock.js b/dom/tests/browser/browser_wakelock.js
new file mode 100644
index 0000000000..5cef231d07
--- /dev/null
+++ b/dom/tests/browser/browser_wakelock.js
@@ -0,0 +1,40 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+"use strict";
+
+add_task(async () => {
+  info("creating test window");
+  let win = await BrowserTestUtils.openNewBrowserWindow();
+
+  const pm = Cc["@mozilla.org/power/powermanagerservice;1"].getService(
+    Ci.nsIPowerManagerService
+  );
+
+  is(
+    pm.getWakeLockState("screen"),
+    "unlocked",
+    "Wakelock should be unlocked state"
+  );
+
+  info("aquiring wakelock");
+  const wakelock = pm.newWakeLock("screen", win);
+  isnot(
+    pm.getWakeLockState("screen"),
+    "unlocked",
+    "Wakelock shouldn't be unlocked state"
+  );
+
+  info("releasing wakelock");
+  wakelock.unlock();
+  is(
+    pm.getWakeLockState("screen"),
+    "unlocked",
+    "Wakelock should be unlocked state"
+  );
+
+  info("closing test window");
+  await BrowserTestUtils.closeWindow(win);
+});