diff --git a/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/service/DeviceCommunicationServiceTestCase.java b/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/service/DeviceCommunicationServiceTestCase.java
index 58dccd72..11fc855e 100644
--- a/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/service/DeviceCommunicationServiceTestCase.java
+++ b/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/service/DeviceCommunicationServiceTestCase.java
@@ -1,17 +1,21 @@
 package nodomain.freeyourgadget.gadgetbridge.service;
 
 import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
 
 import org.junit.Test;
 import org.mockito.InOrder;
 import org.mockito.Mock;
 import org.mockito.Mockito;
 
+import nodomain.freeyourgadget.gadgetbridge.GBApplication;
 import nodomain.freeyourgadget.gadgetbridge.GBException;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
 import nodomain.freeyourgadget.gadgetbridge.model.DeviceType;
 import nodomain.freeyourgadget.gadgetbridge.test.TestBase;
 
+import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NOTIFICATION_BODY;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
@@ -97,4 +101,17 @@ public class DeviceCommunicationServiceTestCase extends TestBase {
         inOrder.verifyNoMoreInteractions();
     }
 
+    @Test
+    public void testTransliterationSupport() {
+        SharedPreferences settings = GBApplication.getPrefs().getPreferences();
+        SharedPreferences.Editor editor = settings.edit();
+        editor.putBoolean("transliteration", true);
+        editor.commit();
+
+        Intent intent = mDeviceService.createIntent().putExtra(EXTRA_NOTIFICATION_BODY, "Прõсто текčт");
+        mDeviceService.invokeService(intent);
+        String result = intent.getStringExtra(EXTRA_NOTIFICATION_BODY);
+
+        assertTrue("Transliteration support fail!", result.equals("Prosto tekct"));
+    }
 }
diff --git a/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/service/TestDeviceService.java b/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/service/TestDeviceService.java
index 8eff6f79..9de950fa 100644
--- a/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/service/TestDeviceService.java
+++ b/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/service/TestDeviceService.java
@@ -29,7 +29,7 @@ class TestDeviceService extends GBDeviceService {
         // calling though to the service natively does not work with robolectric,
         // we have to use the ServiceController to do that
         service.onStartCommand(intent, Service.START_FLAG_REDELIVERY, (int) (Math.random() * 10000));
-//        super.invokeService(intent);
+        super.invokeService(intent);
     }
 
     @Override
diff --git a/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/test/LanguageUtilsTest.java b/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/test/LanguageUtilsTest.java
new file mode 100644
index 00000000..cfc8ec49
--- /dev/null
+++ b/app/src/test/java/nodomain/freeyourgadget/gadgetbridge/test/LanguageUtilsTest.java
@@ -0,0 +1,38 @@
+package nodomain.freeyourgadget.gadgetbridge.test;
+
+import android.content.SharedPreferences;
+
+import org.junit.Test;
+
+import nodomain.freeyourgadget.gadgetbridge.GBApplication;
+import nodomain.freeyourgadget.gadgetbridge.util.LanguageUtils;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Tests LanguageUtils
+ */
+public class LanguageUtilsTest extends TestBase {
+    @Test
+    public void testStringTransliterate() throws Exception {
+        //input with cyrillic and diacritic letters
+        String input = "Прõсто текčт";
+        String output = LanguageUtils.transliterate(input);
+        String result = "Prosto tekct";
+
+        assertTrue(String.format("Transliteration fail! Expected '%s', but found '%s'}", result, output), output.equals(result));
+    }
+
+    @Test
+    public void testTransliterateOption() throws Exception {
+        assertFalse("Transliteration option fail! Expected 'Off' by default, but result is 'On'", LanguageUtils.transliterate());
+
+        SharedPreferences settings = GBApplication.getPrefs().getPreferences();
+        SharedPreferences.Editor editor = settings.edit();
+        editor.putBoolean("transliteration", true);
+        editor.commit();
+
+        assertTrue("Transliteration option fail! Expected 'On', but result is 'Off'", LanguageUtils.transliterate());
+    }
+}