@Test public void addTriangleTest() {


   Triangle[] tArray = new Triangle[20];
   tArray[0] = new Triangle(3, 4, 5);
   tArray[1] = new Triangle(3, 5, 5);
   tArray[2] = new Triangle(3, 3, 3);
   
   TriangleList2 tList = new TriangleList2("Test List", tArray, 3);
   
   Triangle t = new Triangle(7, 7, 7);
   tList.addTriangle(7, 7, 7);
   Triangle[] tA = tList.getList();
      
   Assert.assertEquals("addTriangle Test",
                        t, tA[3]);
}