diff -r 000000000000 -r 6474c204b198 mobile/android/base/tests/testUITelemetry.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/base/tests/testUITelemetry.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+package org.mozilla.gecko.tests;
+
+import org.mozilla.gecko.AppConstants;
+import org.mozilla.gecko.PrefsHelper;
+import org.mozilla.gecko.Telemetry;
+
+import android.util.Log;
+
+public class testUITelemetry extends JavascriptTest {
+    // Prefix used to distinguish test events and sessions from
+    // real ones. Used by the javascript part of the test.
+    static final String TEST_PREFIX = "TEST-";
+
+    public testUITelemetry() {
+        super("testUITelemetry.js");
+    }
+
+    @Override
+    public void testJavascript() throws Exception {
+        blockForGeckoReady();
+
+        // We can't run these tests unless telemetry is turned on --
+        // the events will be dropped on the floor.
+        Log.i("GeckoTest", "Enabling telemetry.");
+        PrefsHelper.setPref(AppConstants.TELEMETRY_PREF_NAME, true);
+
+        Log.i("GeckoTest", "Adding telemetry events.");
+        try {
+            Telemetry.sendUIEvent(TEST_PREFIX + "enone", "method0");
+            Telemetry.startUISession(TEST_PREFIX + "foo");
+            Telemetry.sendUIEvent(TEST_PREFIX + "efoo", "method1");
+            Telemetry.startUISession(TEST_PREFIX + "foo");
+            Telemetry.sendUIEvent(TEST_PREFIX + "efoo", "method2");
+            Telemetry.startUISession(TEST_PREFIX + "bar");
+            Telemetry.sendUIEvent(TEST_PREFIX + "efoobar", "method3", "foobarextras");
+            Telemetry.stopUISession(TEST_PREFIX + "foo", "reasonfoo");
+            Telemetry.sendUIEvent(TEST_PREFIX + "ebar", "method4", "barextras");
+            Telemetry.stopUISession(TEST_PREFIX + "bar", "reasonbar");
+            Telemetry.stopUISession(TEST_PREFIX + "bar", "reasonbar2");
+            Telemetry.sendUIEvent(TEST_PREFIX + "enone", "method5");
+        } catch (Exception e) {
+            Log.e("GeckoTest", "Oops.", e);
+        }
+
+        Log.i("GeckoTest", "Running remaining JS test code.");
+        super.testJavascript();
+    }
+}
+