static void OldWay()
        {
            // this is what is normally done, but not very good

            ClassA instanceA = new ClassA();
            // DynamicTYping
            ClassC instanceC = new ClassC(instanceA);

            int sum = instanceC.GetSum(2, 3);
        }
 public void TestTrimStringWithStartinhSpaces()
 {
     ClassA instanceA = new ClassA();
     Assert.AreEqual(instanceA.TrimString("    a"), "a");
 }
 public void TestTrimStringWithNull()
 {
     ClassA instanceA = new ClassA();
     Assert.AreEqual(instanceA.TrimString(null), null);
 }
 public void TestTrimStringWithMiddlingSpaces()
 {
     ClassA instanceA = new ClassA();
     Assert.AreEqual(instanceA.TrimString("a  b "), "a  b");
 }
 public void TestTrimStringNotNullThrowException()
 {
     ClassA instanceA = new ClassA();
     var trimedString = instanceA.TrimStringNotNull(null);
 }
 public void TestAddTwoNumbers()
 {
     ClassA instanceA = new ClassA();
     Assert.AreEqual(instanceA.AddTwoNumbers(2, 3), 5);
 }