public void MathOperationsContainer_returns_keyword_of_unary_minus_operation_by_characteristics()
{
var mathOperationsContainer = new MathOperationsContainer();
var operationCharacteristics = new OperationCharacteristics("-", OperationType.Unary);
var keyword = mathOperationsContainer.GetKeywordOrDefault(operationCharacteristics);
Assert.Equal("~", keyword);
}
public void MathOperationsContainer_returns_default_keyword_for_unknown_value_and_unary()
{
var mathOperationsContainer = new MathOperationsContainer();
var operationCharacteristics = new OperationCharacteristics("&", OperationType.Unary);
var keyword = mathOperationsContainer.GetKeywordOrDefault(operationCharacteristics);
Assert.Null(keyword);
}
/// <summary>
/// Getting the keyword of an operation by characteristics
/// </summary>
/// <param name="operationCharacteristics">Characteristics of a mathematical operation</param>
/// <returns>Returns the keyword of an operation or default instance</returns>
public string GetKeywordOrDefault(OperationCharacteristics operationCharacteristics)
{
if (operationCharacteristics.Type == OperationType.Binary &&
ContainsOperation(operationCharacteristics.Value))
{
return(operationCharacteristics.Value);
}
if (operationCharacteristics.Type == OperationType.Unary &&
operationCharacteristics.Value == "-")
{
return(UnaryMinusMathOperation.Keyword);
}
return(default(string));
}
