@Test public void getClassificationNotATriangleTest() {


// check sides for 0 /////////////////
   
   Triangle t = new Triangle(0, 7, 7);
   Assert.assertEquals("getClassification test", 
                        "not a triangle", t.getClassification());

   t = new Triangle(7, 0, 7);
   Assert.assertEquals("getClassification test", 
                        "not a triangle", t.getClassification());

   t = new Triangle(7, 7, 0);
   Assert.assertEquals("getClassification test", 
                        "not a triangle", t.getClassification());


// check side for longer than sum of other two sides /////////
   
   t = new Triangle(15, 7, 7);
   Assert.assertEquals("getClassification test", 
                        "not a triangle", t.getClassification());

   t = new Triangle(7, 15, 7);
   Assert.assertEquals("getClassification test", 
                        "not a triangle", t.getClassification());

   t = new Triangle(7, 7, 15);
   Assert.assertEquals("getClassification test", 
                        "not a triangle", t.getClassification());
}