public static void Main(string[] args)
{
Console.WriteLine("Enter expression: ");
var expression = Console.ReadLine();
IExpressionValidator validator = new ExpressionValidator();
var validationResult = validator.Validate(expression);
if (validationResult != null)
{
Console.WriteLine(validationResult);
Console.ReadKey();
return;
}
IExpressionCorrector corrector = new ExpressionCorrector();
expression = corrector.Correct(expression);
ICalculator calculator = new Calculator(new Parser(), new OperationPerformer());
var result = calculator.Compute(expression);
Console.WriteLine($"Result: {result}");
Console.ReadKey();
}
public void UnitTestWithDivisionReturns182_5()
{
// arrange
var expression = "876/4.8";
var corrector = new CalculatorProject.ExpressionCorrector();
expression = corrector.Correct(expression);
var calculator = new Calculator(
new Parser(),
new OperationPerformer());
// act
var actualResult = calculator.Compute(expression);
// assert
Assert.AreEqual(182.5, actualResult);
}
public void UnitTestWithSubtractionReturns65_8()
{
// arrange
var expression = "67.8-2";
var corrector = new CalculatorProject.ExpressionCorrector();
expression = corrector.Correct(expression);
var calculator = new Calculator(
new Parser(),
new OperationPerformer());
// act
var actualResult = calculator.Compute(expression);
// assert
Assert.AreEqual(65.8, actualResult);
}
public void UnitTestWithAllOperatorsReturns45_0()
{
// arrange
var expression = "42+5.2-2*5.5/5";
var corrector = new CalculatorProject.ExpressionCorrector();
expression = corrector.Correct(expression);
var calculator = new CalculatorProject.Calculator(
new Parser(),
new OperationPerformer());
// act
var actualResult = calculator.Compute(expression);
// assert
Assert.AreEqual(45.0, actualResult);
}
public void UnitTestWithBracketsReturnsMin1_4()
{
// arrange
var expression = "8.4+(6-7.8)-(9*(7-6)-1)";
var corrector = new CalculatorProject.ExpressionCorrector();
expression = corrector.Correct(expression);
var calculator = new CalculatorProject.Calculator(
new Parser(),
new OperationPerformer());
// act
var actualResult = calculator.Compute(expression);
// assert
Assert.AreEqual(-1.4, actualResult);
}