public void StandartMultiplyTest_2()
 {
     op = new OperationMultiply();
     op.SetRight(new Operand(0));
     op.SetLeft(new Operand(5));
     Assert.AreEqual(0, op.Result());
 }
 public void StandartNullTest_1()
 {
     op = new OperationAdd();
     // op.SetRight(new Operand(5));
     op.SetLeft(new Operand(5));
     Assert.AreEqual(10, op.Result());
 }
 public void StandartDivideTest_3()
 {
     op = new OperationDivide();
     op.SetRight(new Operand(5));
     op.SetLeft(new Operand(0));
     Assert.AreEqual(0, op.Result());
 }
 public void StandartSubtractTest_1()
 {
     op = new OperationSubtract();
     op.SetRight(new Operand(5));
     op.SetLeft(new Operand(6));
     Assert.AreEqual(1, op.Result());
 }
 public void StandartNullTest_2()
 {
     op = new OperationAdd();
     // op.SetRight(new Operand(5));
     op.SetLeft(new Operand(5));
     op.Print();
 }