Fix unsafe operations

src/test/java/de/tudresden/inf/mci/brailleplot/diagrams/BarChartTest.java

@@ -16,18 +16,18 @@ import java.util.LinkedList;
 public class BarChartTest {
 
     public static SimplePointListContainerImpl container;
-    public static LinkedList<PointList> outter_list;
+    public static LinkedList<PointList> outer_list;
     public static PointList inner_list;
     public static Point2DDouble point;
 
     @BeforeAll
     public static void initialize() {
-        outter_list = new LinkedList<>();
+        outer_list = new LinkedList<>();
         inner_list = new SimplePointListImpl();
         point = new Point2DDouble(1, 2);
         inner_list.pushBack(point);
-        outter_list.add(inner_list);
-        container = new SimplePointListContainerImpl(outter_list);
+        outer_list.add(inner_list);
+        container = new SimplePointListContainerImpl(outer_list);
     }
 
     @Test

src/test/java/de/tudresden/inf/mci/brailleplot/point/Point2DTest.java

@@ -12,22 +12,22 @@ public class Point2DTest {
     public void testPoint2D () {
         int a = 1;
         int b = 2;
-        Point2D p;
+        Point2D<Integer> p;
 
-        Assertions.assertThrows(NullPointerException.class, () -> {new Point2D(null, b);});
-        Assertions.assertThrows(NullPointerException.class, () -> {new Point2D(a, null);});
+        Assertions.assertThrows(NullPointerException.class, () -> {new Point2D<>(null, b);});
+        Assertions.assertThrows(NullPointerException.class, () -> {new Point2D<>(a, null);});
 
-        p = new Point2D(a, b);
+        p = new Point2D<>(a, b);
         Assertions.assertEquals(a, p.getX());
         Assertions.assertEquals(b, p.getY());
     }
 
     @Test
     public void testEquals () {
-        Point2DDouble point_1 = new Point2DDouble(1, 2);
-        Point2DDouble point_2 = new Point2DDouble(1, 2);
-        Point2DDouble point_3 = new Point2DDouble(1, 3);
-        Point2DDouble point_4 = new Point2DDouble(2, 2);
+        Point2D<Integer> point_1 = new Point2D<>(1, 2);
+        Point2D<Integer> point_2 = new Point2D<>(1, 2);
+        Point2D<Integer> point_3 = new Point2D<>(1, 3);
+        Point2D<Integer> point_4 = new Point2D<>(2, 2);
         String string = "test";
 
         Assertions.assertEquals(true, point_1.equals(point_2));

src/test/java/de/tudresden/inf/mci/brailleplot/point/Point2DValuedTest.java

@@ -14,19 +14,19 @@ public class Point2DValuedTest {
         int b = 2;
         int value = 3;
 
-        Assertions.assertThrows(NullPointerException.class, () -> {new Point2DValued(a, b, null);});
+        Assertions.assertThrows(NullPointerException.class, () -> {new Point2DValued<Integer, Integer>(a, b, null);});
 
-        Point2DValued<Integer, Integer> point = new Point2DValued(a, b, value);
+        Point2DValued<Integer, Integer> point = new Point2DValued<>(a, b, value);
         Assertions.assertEquals(value, point.getVal());
     }
 
     @Test
     public void testEquals () {
-        Point2DValued<Integer, Integer> point_1 = new Point2DValued(1, 2, 3);
-        Point2DValued<Integer, Integer> point_2 = new Point2DValued(1, 2, 3);
-        Point2DValued<Integer, Integer> point_3 = new Point2DValued(2, 2, 3);
-        Point2DValued<Integer, Integer> point_4 = new Point2DValued(1, 1, 3);
-        Point2DValued<Integer, Integer> point_5 = new Point2DValued(1, 2, 2);
+        Point2DValued<Integer, Integer> point_1 = new Point2DValued<>(1, 2, 3);
+        Point2DValued<Integer, Integer> point_2 = new Point2DValued<>(1, 2, 3);
+        Point2DValued<Integer, Integer> point_3 = new Point2DValued<>(2, 2, 3);
+        Point2DValued<Integer, Integer> point_4 = new Point2DValued<>(1, 1, 3);
+        Point2DValued<Integer, Integer> point_5 = new Point2DValued<>(1, 2, 2);
         String string = "test";
 
         Assertions.assertEquals(true, point_1.equals(point_2));