public void Subtraction_CheckResult()
{
//Arrange
decimal a = 4m;
decimal b = 2m;
decimal expectedResult = 2m;
Subtraction op = new Subtraction()
{
op1 = a, op2 = b
};
//Act
decimal response = op.CalculateResult();
//Assert
Assert.AreEqual(expectedResult, response);
}
