public void ReturnPositiveIfDoubleNegative()
{
// Arrange
string CalculationString = "--20";
string OperatorToCalculate = "-";
StringModifier SystemUnderTest = new StringModifier(_operationIdentifier.Object, _operationFactory.Object);
// Act
SystemUnderTest.SubstituteOperationsWithResult(ref CalculationString, OperatorToCalculate);
// Assert
CalculationString.ShouldBe("20");
_operationFactory.Verify(x => x.Create(It.IsAny <string>()), Times.Never());
_operator.Verify(x => x.GetResult(), Times.Never());
}
public void ReplaceOperationWithResult()
{
// Arrange
string CalculationString = "4+6/2*3-8";
string OperatorToCalculate = "/";
StringModifier SystemUnderTest = new StringModifier(_operationIdentifier.Object, _operationFactory.Object);
// Act
SystemUnderTest.SubstituteOperationsWithResult(ref CalculationString, OperatorToCalculate);
// Assert
CalculationString.ShouldBe("4+3*3-8");
_operationFactory.Verify(x => x.Create("6/2"), Times.Once());
_operator.Verify(x => x.GetResult(), Times.Once());
}
