Finished Version

test/TriangleCheckerTest.java

 
         // Assert
         assertEquals(TriangleChecker.TriangleType.NORMAL, type);
+
+    }
+    @Test
+    public void testEquilateralTriangle() {
+
+        // Arrange
+        float a = 2;
+        float b = 2;
+        float c = 2;
+
+        // Act
+        TriangleChecker.TriangleType type = TriangleChecker.checkTriangle(a, b, c);
+
+        // Assert
         assertEquals(TriangleChecker.TriangleType.EQUILATERAL, type);
+
+    }
+
+    @Test
+    public void testIsoscelesTriangle() {
+
+        // Arrange
+        float a = 2;
+        float b = 2;
+        float c = 3;
+
+        float d = 3;
+        float e = 2;
+        float f = 2;
+
+        float g = 2;
+        float h = 3;
+        float i = 2;
+
+        // Act
+        TriangleChecker.TriangleType type = TriangleChecker.checkTriangle(a, b, c);
+        TriangleChecker.TriangleType typeOne = TriangleChecker.checkTriangle(d, e, f);
+        TriangleChecker.TriangleType typeTwo = TriangleChecker.checkTriangle(g, h, i);
+
+        // Assert
         assertEquals(TriangleChecker.TriangleType.ISOSCELES, type);
+        assertEquals(TriangleChecker.TriangleType.ISOSCELES, typeOne);
+        assertEquals(TriangleChecker.TriangleType.ISOSCELES, typeTwo);
+
+    }
+    @Test
+    public void testNoTriangle() {
+
+        // Arrange
+        float a = 3; //überlange Seite
+        float b = 1;
+        float c = 1;
 
+        float d = 0;
+        float e = 0;
+        float f = 0;
+
+        float g = -1;//negative Zahlen
+        float h = -1;
+        float i = -1;
+
+        float j = 4;
+        float k = 8;
+        float l = 12;
+
+        float m =  3;
+        float n =  0;
+        float o =  4;
+
+        float p =  3;
+        float q = -5;
+        float r =  4;
+
+
+        // Act
+        TriangleChecker.TriangleType caseOne = TriangleChecker.checkTriangle(a, b, c);
+        TriangleChecker.TriangleType caseTwo = TriangleChecker.checkTriangle(d, e, f);
+        TriangleChecker.TriangleType caseThree = TriangleChecker.checkTriangle(g, h, i);
+        TriangleChecker.TriangleType caseFour = TriangleChecker.checkTriangle(j, k, l);
+        TriangleChecker.TriangleType caseFive = TriangleChecker.checkTriangle(m,n,o);
+        TriangleChecker.TriangleType caseSix = TriangleChecker.checkTriangle(p, q, r);
+
+        // Assert
+        assertEquals(TriangleChecker.TriangleType.NONE, caseOne);
+        assertEquals(TriangleChecker.TriangleType.NONE, caseTwo);
+        assertEquals(TriangleChecker.TriangleType.NONE, caseThree);
+        assertEquals(TriangleChecker.TriangleType.NONE, caseFour);
+        assertEquals(TriangleChecker.TriangleType.NONE, caseFive);
+        assertEquals(TriangleChecker.TriangleType.NONE, caseSix);
     }
 
 }