public void EvaluatePostfix_PassDoubleInPostfix_ComputesExpression()
        {
            //Arrange
            var inputValue    = new string[] { "2.3", "5.5", "+", "3.3", "2.2", "-", "*" };
            var expectedValue = new decimal(8.58);

            //Act
            var result = RPNCalculator.EvaluatePostfix(inputValue);

            //Assert
            Assert.Equal(result, expectedValue);
        }
        public void EvaluatePostfix_PassIntegerInPostfix_ComputesExpression()
        {
            //Arrange
            var inputValue    = new string[] { "20", "50", "+", "30", "20", "+", "*" };
            var expectedValue = new decimal(3500);

            //Act
            var result = RPNCalculator.EvaluatePostfix(inputValue);

            //Assert
            Assert.Equal(result, expectedValue);
        }