diff -r 000000000000 -r 6474c204b198 mobile/android/tests/background/junit3/src/common/TestAndroidLogWriters.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/tests/background/junit3/src/common/TestAndroidLogWriters.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,68 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+package org.mozilla.gecko.background.common;
+
+import org.mozilla.gecko.background.common.log.Logger;
+import org.mozilla.gecko.background.common.log.writers.AndroidLevelCachingLogWriter;
+import org.mozilla.gecko.background.common.log.writers.AndroidLogWriter;
+import org.mozilla.gecko.background.common.log.writers.LogWriter;
+import org.mozilla.gecko.background.helpers.AndroidSyncTestCase;
+
+public class TestAndroidLogWriters extends AndroidSyncTestCase {
+  public static final String TEST_LOG_TAG = "TestAndroidLogWriters";
+
+  public static final String TEST_MESSAGE_1 = "LOG TEST MESSAGE one";
+  public static final String TEST_MESSAGE_2 = "LOG TEST MESSAGE two";
+  public static final String TEST_MESSAGE_3 = "LOG TEST MESSAGE three";
+
+  public void setUp() {
+    Logger.stopLoggingToAll();
+  }
+
+  public void tearDown() {
+    Logger.resetLogging();
+  }
+
+  /**
+   * Verify these *all* appear in the Android log by using
+   * <code>adb logcat | grep TestAndroidLogWriters</code> after executing
+   * <code>adb shell setprop log.tag.TestAndroidLogWriters ERROR</code>.
+   * <p>
+   * This writer does not use the Android log levels!
+   */
+  public void testAndroidLogWriter() {
+    LogWriter lw = new AndroidLogWriter();
+
+    Logger.error(TEST_LOG_TAG, TEST_MESSAGE_1, new RuntimeException());
+    Logger.startLoggingTo(lw);
+    Logger.error(TEST_LOG_TAG, TEST_MESSAGE_2);
+    Logger.warn(TEST_LOG_TAG, TEST_MESSAGE_2);
+    Logger.info(TEST_LOG_TAG, TEST_MESSAGE_2);
+    Logger.debug(TEST_LOG_TAG, TEST_MESSAGE_2);
+    Logger.trace(TEST_LOG_TAG, TEST_MESSAGE_2);
+    Logger.stopLoggingTo(lw);
+    Logger.error(TEST_LOG_TAG, TEST_MESSAGE_3, new RuntimeException());
+  }
+
+  /**
+   * Verify only *some* of these appear in the Android log by using
+   * <code>adb logcat | grep TestAndroidLogWriters</code> after executing
+   * <code>adb shell setprop log.tag.TestAndroidLogWriters INFO</code>.
+   * <p>
+   * This writer should use the Android log levels!
+   */
+  public void testAndroidLevelCachingLogWriter() throws Exception {
+    LogWriter lw = new AndroidLevelCachingLogWriter(new AndroidLogWriter());
+
+    Logger.error(TEST_LOG_TAG, TEST_MESSAGE_1, new RuntimeException());
+    Logger.startLoggingTo(lw);
+    Logger.error(TEST_LOG_TAG, TEST_MESSAGE_2);
+    Logger.warn(TEST_LOG_TAG, TEST_MESSAGE_2);
+    Logger.info(TEST_LOG_TAG, TEST_MESSAGE_2);
+    Logger.debug(TEST_LOG_TAG, TEST_MESSAGE_2);
+    Logger.trace(TEST_LOG_TAG, TEST_MESSAGE_2);
+    Logger.stopLoggingTo(lw);
+    Logger.error(TEST_LOG_TAG, TEST_MESSAGE_3, new RuntimeException());
+  }
+}