add basic junit tests

News-Android-App/src/androidTest/java/de/luhmer/owncloudnewsreader/junit_tests/RobolectricGradleTestRunner.java

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+package de.luhmer.owncloudnewsreader.junit_tests;
+
+import org.junit.runners.model.InitializationError;
+import org.robolectric.AndroidManifest;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.annotation.Config;
+import org.robolectric.res.Fs;
+
+public class RobolectricGradleTestRunner extends RobolectricTestRunner {
+    public RobolectricGradleTestRunner(Class<?> testClass) throws InitializationError {
+        super(testClass);
+    }
+
+    @Override
+    protected AndroidManifest getAppManifest(Config config) {
+        String myAppPath = RobolectricGradleTestRunner.class.getProtectionDomain()
+                .getCodeSource()
+                .getLocation()
+                .getPath();
+        String manifestPath = myAppPath + "../../../src/main/AndroidManifest.xml";
+        String resPath = myAppPath + "../../../src/main/res";
+        String assetPath = myAppPath + "../../../src/main/assets";
+
+
+        return createAppManifest(Fs.fileFromPath(manifestPath),
+                Fs.fileFromPath(resPath),
+                Fs.fileFromPath(assetPath));
+    }
+}

News-Android-App/src/androidTest/java/de/luhmer/owncloudnewsreader/junit_tests/TestDbTest.java

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+package de.luhmer.owncloudnewsreader.junit_tests;
+
+import android.database.Cursor;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.rules.Stopwatch;
+import org.junit.runner.RunWith;
+import org.robolectric.Robolectric;
+import org.robolectric.annotation.Config;
+
+import java.util.List;
+
+import de.luhmer.owncloudnewsreader.NewsReaderListActivity;
+import de.luhmer.owncloudnewsreader.database.DatabaseConnection;
+import de.luhmer.owncloudnewsreader.database.DatabaseConnectionOrm;
+import de.luhmer.owncloudnewsreader.database.DatabaseHelperOrm;
+import de.luhmer.owncloudnewsreader.database.model.DaoSession;
+import de.luhmer.owncloudnewsreader.database.model.Feed;
+
+import static org.junit.Assert.*;
+
+
+@Config(emulateSdk=18)
+@RunWith(RobolectricGradleTestRunner.class)
+public class TestDbTest {
+
+    private NewsReaderListActivity activity;
+
+    @Before
+    public void setup() {
+        activity = Robolectric.buildActivity(NewsReaderListActivity.class).create().get();
+    }
+
+    @Test
+    public void test() {
+        assertTrue(true);
+    }
+
+    /*
+    @Test
+    public void checkActivityNotNull() throws Exception {
+        assertNotNull(activity);
+    }
+    */
+}

News-Android-App/src/androidTest/resources/org.robolectric.Config.properties

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+# Robolectric doesn't know how to support SDK 19 yet.
+emulateSdk=18