static void Main(string[] args)
{
var mathOperationsContainer = new MathOperationsContainer();
var parser = new Parser();
var notationConverter = new NotationConverter();
var mathProcessor = new MathProcessor();
var calculator = new MathCalculator(parser, notationConverter, mathProcessor, mathOperationsContainer);
Console.WriteLine("Calculator");
Console.WriteLine("To complete the work, type exit.");
while (true)
{
Console.Write("Enter a math expression: ");
var expression = Console.ReadLine();
if (expression == "exit")
{
Console.WriteLine("Work completed.");
break;
}
var result = calculator.Calculate(expression);
Console.WriteLine("Result: {0}", result);
}
}
public void Calculator_calculates()
{
const string inputExpression = "1+2*3";
var parsedExpression = new List <ExpressionUnit>
{
new NumberExpressionUnit("1.00"),
new OperationExpressionUnit("+"),
new NumberExpressionUnit("2.00"),
new OperationExpressionUnit("*"),
new NumberExpressionUnit("3.00")
};
var convertedExpression = new List <ExpressionUnit>
{
new NumberExpressionUnit("1.00"),
new NumberExpressionUnit("2.00"),
new NumberExpressionUnit("3.00"),
new OperationExpressionUnit("*"),
new OperationExpressionUnit("+")
};
const double expectedResult = 7;
_mockParser
.Setup(p => p.Parse(inputExpression, _mathOperationsContainer))
.Returns(parsedExpression);
_mockNotationConverter
.Setup(nc => nc.ConvertToReversePolishNotation(parsedExpression, _mathOperationsContainer))
.Returns(convertedExpression);
_mockMathProcessor
.Setup(mp => mp.Process(convertedExpression, _mathOperationsContainer))
.Returns(expectedResult);
var actualResult = _calculator.Calculate(inputExpression);
Assert.Equal("7", actualResult);
}