pythagorean-triplet: rename variable

exercises/pythagorean-triplet/src/test/java/PythagoreanTripletTest.java

 
     @Test
     public void shouldCalculateSum() {
-        PythagoreanTriplet sut = new PythagoreanTriplet(3, 4, 5);
+        PythagoreanTriplet triplet = new PythagoreanTriplet(3, 4, 5);
         final int expected = 12;
-        final int actual = sut.calculateSum();
+        final int actual = triplet.calculateSum();
         assertEquals(expected, actual);
     }
 
     @Test
     @Ignore("Remove to run test")
     public void shouldCalculateProduct() {
-        PythagoreanTriplet sut = new PythagoreanTriplet(3, 4, 5);
+        PythagoreanTriplet triplet = new PythagoreanTriplet(3, 4, 5);
         final long expected = 60l;
-        final long actual = sut.calculateProduct();
+        final long actual = triplet.calculateProduct();
         assertEquals(expected, actual);
     }
 
     @Test
     @Ignore("Remove to run test")
     public void testIsPythagoreanOK() {
-        PythagoreanTriplet sut = new PythagoreanTriplet(3, 4, 5);
-        assertTrue(sut.isPythagorean());
+        PythagoreanTriplet triplet = new PythagoreanTriplet(3, 4, 5);
+        assertTrue(triplet.isPythagorean());
     }
 
     @Test
     @Ignore("Remove to run test")
     public void testIsPythagoreanFail() {
-        PythagoreanTriplet sut = new PythagoreanTriplet(5, 6, 7);
-        assertFalse(sut.isPythagorean());
+        PythagoreanTriplet triplet = new PythagoreanTriplet(5, 6, 7);
+        assertFalse(triplet.isPythagorean());
     }
 
     @Test