public void ShouldMulTwoNumbers()
        {
            ICalculator sut            = new Calculator();
            int         expectedResult = sut.Mul(7, 8);

            Assert.That(expectedResult, Is.EqualTo(56));
        }
 public void ShouldMulTwoNumbers()
 {
     ICalculator sut = new Calculator();
     int expectedResult = sut.Mul(7, 8);
     Assert.That(expectedResult, Is.EqualTo(56));
 }