public void DivisionByZero(string input, string error)
{
var result = CalculateHelper.Calculate(input);
Assert.IsFalse(result.IsSuccess());
Assert.AreEqual(error, result.Error);
}
public void InvalidBrackets(string input, string error)
{
var result = CalculateHelper.Calculate(input);
Assert.IsFalse(result.IsSuccess());
Assert.AreEqual(error, result.Error);
}
public void MisuseOfOperator(string input, string error)
{
var result = CalculateHelper.Calculate(input);
Assert.IsFalse(result.IsSuccess());
Assert.AreEqual(error, result.Error);
}
public void NotationWithBrackets(string input, double result)
{
var calculationResult = CalculateHelper.Calculate(input);
Assert.IsTrue(calculationResult.IsSuccess());
Assert.AreEqual(result, calculationResult.Result);
}
public void DecimalFractions(string input, double result)
{
var calculationResult = CalculateHelper.Calculate(input);
Assert.IsTrue(calculationResult.IsSuccess());
Assert.AreEqual(result, calculationResult.Result);
}
public void TwoOperationWithDifferentPriority(string input, double result)
{
var calculationResult = CalculateHelper.Calculate(input);
Assert.IsTrue(calculationResult.IsSuccess());
Assert.AreEqual(result, calculationResult.Result);
}
public void Calculate_SubtractingTwoValidWholeNumbers_ReturnsCorrectDifference()
{
var calculateHelper = new CalculateHelper
{
Operation = Operation.Subtract,
Operand1 = 4,
Operand2 = 6
};
Assert.AreEqual( -2, calculateHelper.Calculate() );
}
public void Calculate_MultiplyingTwoValidWholeNumbers_ReturnsCorrectProduct()
{
var calculateHelper = new CalculateHelper
{
Operation = Operation.Multiply,
Operand1 = -4,
Operand2 = 2
};
Assert.AreEqual( -8, calculateHelper.Calculate() );
}
public void Calculate_DividingTwoValidWholeNumbers_ReturnsCorrectQuotient()
{
var calculateHelper = new CalculateHelper
{
Operation = Operation.Divide,
Operand1 = 5,
Operand2 = 2
};
Assert.AreEqual( 2.5, calculateHelper.Calculate(), 0.01 );
}
public void Calculate_AddingTwoValidWholeNumbers_ReturnsCorrectSum()
{
var calculateHelper = new CalculateHelper
{
Operation = Operation.Add,
Operand1 = 2,
Operand2 = 3
};
Assert.AreEqual( 5, calculateHelper.Calculate() );
}
static void Main(string[] args)
{
while (true)
{
var expression = Console.ReadLine();
var result = CalculateHelper.Calculate(expression);
if (result.IsSuccess())
{
Console.WriteLine(result.Result);
}
else
{
Console.WriteLine(result.Error);
}
}
}