Create tests (#26)

* Add unit and instrumented tests
* Divide code coverage to two different tags on codecov
* Change sdk image to 25
* Turn on console output in unit tests

app/src/test/java/io/github/wulkanowy/activity/dashboard/grades/GradesDialogFragmentTest.java

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+package io.github.wulkanowy.activity.dashboard.grades;
+
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import io.github.wulkanowy.R;
+
+import static io.github.wulkanowy.activity.dashboard.grades.GradesDialogFragment.colorHexToColorName;
+
+public class GradesDialogFragmentTest {
+
+    @Test
+    public void colorHexToColorNameTest() {
+        Assert.assertEquals(R.string.color_black_text, colorHexToColorName("000000"));
+        Assert.assertEquals(R.string.color_red_text, colorHexToColorName("F04C4C"));
+        Assert.assertEquals(R.string.color_blue_text, colorHexToColorName("20A4F7"));
+        Assert.assertEquals(R.string.color_green_text, colorHexToColorName("6ECD07"));
+        Assert.assertEquals(R.string.noColor_text, colorHexToColorName(""));
+
+    }
+}

app/src/test/java/io/github/wulkanowy/activity/dashboard/grades/SubjectWithGradesTest.java

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+package io.github.wulkanowy.activity.dashboard.grades;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import io.github.wulkanowy.dao.entities.Grade;
+
+public class SubjectWithGradesTest {
+
+    private List<Grade> gradeListEmpty = new ArrayList<>();
+
+    private List<Grade> gradeList = new ArrayList<>();
+
+    private Grade grade = new Grade().setDescription("Lorem ipsum");
+
+    @Before
+    public void setUp() {
+        gradeList.add(grade);
+    }
+
+    @Test
+    public void countTest() {
+        SubjectWithGrades subjectWithGrades = new SubjectWithGrades("", gradeList);
+        Assert.assertEquals(1, subjectWithGrades.getItemCount());
+
+        SubjectWithGrades subjectWithGrades1 = new SubjectWithGrades("", gradeListEmpty);
+        Assert.assertEquals(0, subjectWithGrades1.getItemCount());
+    }
+
+    @Test
+    public void titleTest() {
+        SubjectWithGrades subjectWithGrades = new SubjectWithGrades("TEST", gradeListEmpty);
+        Assert.assertEquals("TEST", subjectWithGrades.getTitle());
+    }
+
+    @Test
+    public void itemTest() {
+        SubjectWithGrades subjectWithGrades = new SubjectWithGrades("", gradeList);
+        Assert.assertEquals(gradeList, subjectWithGrades.getItems());
+    }
+}

app/src/test/java/io/github/wulkanowy/utilities/ConnectionUtilitiesTest.java

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+package io.github.wulkanowy.utilities;
+
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class ConnectionUtilitiesTest extends ConnectionUtilities {
+
+    @Test
+    public void isOnlineTrueTest() {
+        NetworkInfo networkInfo = mock(NetworkInfo.class);
+        when(networkInfo.isConnectedOrConnecting()).thenReturn(true);
+
+        ConnectivityManager connectivityManager = mock(ConnectivityManager.class);
+        when(connectivityManager.getActiveNetworkInfo()).thenReturn(networkInfo);
+
+        Context context = mock(Context.class);
+        when(context.getSystemService(Context.CONNECTIVITY_SERVICE)).thenReturn(connectivityManager);
+
+        Assert.assertTrue(ConnectionUtilities.isOnline(context));
+    }
+
+    @Test
+    public void isOnlineFalseTest() {
+        NetworkInfo networkInfo = mock(NetworkInfo.class);
+        when(networkInfo.isConnectedOrConnecting()).thenReturn(false);
+
+        ConnectivityManager connectivityManager = mock(ConnectivityManager.class);
+        when(connectivityManager.getActiveNetworkInfo()).thenReturn(networkInfo);
+
+        Context context = mock(Context.class);
+        when(context.getSystemService(Context.CONNECTIVITY_SERVICE)).thenReturn(connectivityManager);
+
+        Assert.assertFalse(ConnectionUtilities.isOnline(context));
+    }
+}

app/src/test/java/io/github/wulkanowy/utilities/ConversionVulcanObjectTest.java

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+package io.github.wulkanowy.utilities;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import io.github.wulkanowy.api.grades.Grade;
+import io.github.wulkanowy.api.grades.Subject;
+
+public class ConversionVulcanObjectTest extends ConversionVulcanObject {
+
+    @Test
+    public void subjectConversionTest() {
+        List<Subject> subjectList = new ArrayList<>();
+        subjectList.add(new Subject().setName("Matematyka"));
+        List<io.github.wulkanowy.dao.entities.Subject> subjectEntitiesList =
+                ConversionVulcanObject.subjectsToSubjectEntities(subjectList);
+
+        Assert.assertEquals("Matematyka", subjectEntitiesList.get(0).getName());
+    }
+
+    @Test
+    public void subjectConversionEmptyTest() {
+        Assert.assertEquals(new ArrayList<>(),
+                ConversionVulcanObject.subjectsToSubjectEntities(new ArrayList<Subject>()));
+    }
+
+    @Test
+    public void gradesConversionTest() {
+        List<Grade> gradeList = new ArrayList<>();
+        gradeList.add(new Grade().setDescription("Lorem ipsum"));
+        List<io.github.wulkanowy.dao.entities.Grade> gradeEntitiesList =
+                ConversionVulcanObject.gradesToGradeEntities(gradeList);
+
+        Assert.assertEquals("Lorem ipsum", gradeEntitiesList.get(0).getDescription());
+    }
+
+    @Test
+    public void gradeConversionEmptyTest() {
+        Assert.assertEquals(new ArrayList<>(),
+                ConversionVulcanObject.gradesToGradeEntities(new ArrayList<Grade>()));
+    }
+}