HandlerServer: use executor service to send data to TrackRecordingService.

Fixes #329.

src/androidTest/java/de/dennisguse/opentracks/services/handlers/HandlerServerTest.java

@@ -0,0 +1,63 @@
+package de.dennisguse.opentracks.services.handlers;
+
+import android.content.Context;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+
+import de.dennisguse.opentracks.content.data.TrackPoint;
+
+import static org.mockito.Mockito.verify;
+
+@RunWith(MockitoJUnitRunner.class)
+public class HandlerServerTest {
+
+    @Mock
+    private Context context;
+
+    @Mock
+    private HandlerServer.HandlerServerInterface server;
+
+    @Mock
+    private LocationHandler locationHandler;
+
+    private HandlerServer subject;
+
+    @Before
+    public void setUp() {
+        subject = new HandlerServer(locationHandler, server);
+        subject.start(context);
+    }
+
+    @After
+    public void tearDown() {
+        subject.stop(context);
+    }
+
+    @Test
+    public void onSharedPreferenceChanged() {
+        // when
+        subject.onSharedPreferenceChanged(null, null, null);
+
+        // then
+        verify(locationHandler).onSharedPreferenceChanged(null, null, null);
+    }
+
+    @Test
+    public void sendTrackPoint() throws InterruptedException {
+        // given
+        TrackPoint trackPoint = new TrackPoint();
+        int accuracy = 50;
+
+        // when
+        subject.sendTrackPoint(trackPoint, accuracy);
+
+        // then
+        Thread.sleep(10); // Wait for executor service
+        verify(server).newTrackPoint(trackPoint, accuracy);
+    }
+}