Migrate to greenDAO (#23)

* Migration of database operation to greenDAO
* Disable crashlitics for debug builds
* Remove unused drawable
* Fix crash when user have one grade

app/src/test/java/io/github/wulkanowy/dao/EntitiesCompareTest.java

@@ -0,0 +1,80 @@
+package io.github.wulkanowy.dao;
+
+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 EntitiesCompareTest {
+
+    private List<Grade> newList = new ArrayList<>();
+
+    private List<Grade> oldList = new ArrayList<>();
+
+    private Grade grade1;
+
+    private Grade grade2;
+
+    @Before
+    public void prepareObjects() {
+        grade1 = new Grade()
+                .setSubject("Matematyka")
+                .setValue("6")
+                .setColor("FFFFFF")
+                .setSymbol("S")
+                .setDescription("Lorem ipsum")
+                .setWeight("10")
+                .setDate("01.01.2017")
+                .setTeacher("Andrzej")
+                .setSemester("777");
+
+        grade2 = new Grade()
+                .setSubject("Religia")
+                .setValue("6")
+                .setColor("FFFFFF")
+                .setSymbol("S")
+                .setDescription("Wolna wola")
+                .setWeight("10")
+                .setDate("01.01.2017")
+                .setTeacher("Andrzej")
+                .setSemester("777");
+    }
+
+    @Test
+    public void testCompareNewGradePositive() {
+
+        newList.add(grade1);
+
+        List<Grade> updatedList = EntitiesCompare.compareGradeList(newList, oldList);
+
+        Assert.assertEquals(true, (updatedList.get(0)).getIsNew());
+
+    }
+
+    @Test
+    public void testCompareNewGradeNegative() {
+
+        newList.add(grade1);
+        newList.add(grade1);
+        oldList.add(grade1);
+        oldList.add(grade2);
+
+        List<Grade> updatedList = EntitiesCompare.compareGradeList(newList, oldList);
+
+        Assert.assertEquals(false, (updatedList.get(0)).getIsNew());
+        Assert.assertEquals(false, (updatedList.get(1)).getIsNew());
+    }
+
+    @Test
+    public void testCompareEmptyGradeList() {
+
+        List<Grade> updatedList = EntitiesCompare.compareGradeList(newList, oldList);
+
+        Assert.assertEquals(new ArrayList<>(), updatedList);
+    }
+}

app/src/test/java/io/github/wulkanowy/dao/entities/GradeTest.java

@@ -0,0 +1,35 @@
+package io.github.wulkanowy.dao.entities;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import io.github.wulkanowy.R;
+
+public class GradeTest {
+
+    @Test
+    public void getValueColorTest() {
+        Assert.assertEquals(R.color.six_grade, new Grade().setValue("-6").getValueColor());
+        Assert.assertEquals(R.color.five_grade, new Grade().setValue("--5").getValueColor());
+        Assert.assertEquals(R.color.four_grade, new Grade().setValue("=4").getValueColor());
+        Assert.assertEquals(R.color.three_grade, new Grade().setValue("3-").getValueColor());
+        Assert.assertEquals(R.color.two_grade, new Grade().setValue("2--").getValueColor());
+        Assert.assertEquals(R.color.two_grade, new Grade().setValue("2=").getValueColor());
+        Assert.assertEquals(R.color.one_grade, new Grade().setValue("1+").getValueColor());
+        Assert.assertEquals(R.color.one_grade, new Grade().setValue("+1").getValueColor());
+        Assert.assertEquals(R.color.default_grade, new Grade().setValue("Np").getValueColor());
+        Assert.assertEquals(R.color.default_grade, new Grade().setValue("").getValueColor());
+    }
+
+    @Test
+    public void equalsTest() {
+        Assert.assertTrue(new Grade().setSubject("Religia").setValue("5")
+                .equals(new Grade().setSubject("Religia").setValue("5")));
+
+        Assert.assertFalse(new Grade().setSubject("Religia").setValue("4")
+                .equals(new Grade().setSubject("Religia").setValue("5")));
+
+        Assert.assertEquals(new Grade().setSubject("Religia").setValue("5").hashCode(),
+                new Grade().setSubject("Religia").setValue("5").hashCode());
+    }
+}