public void ParameterExpressionHelper_GenerateRandom16CharWord()
{
// Arrange and Act
string result = ParameterExpressionHelper.GenerateRandomWord();
// Assert
Check.That(result).Matches(@"[a-z]{16}");
}
public void ParameterExpressionHelper_IsNullOrWhiteSpace(string input, bool expectedResult)
{
// Arrange and Act
bool result = ParameterExpressionHelper.IsNullOrWhiteSpace(input);
// Assert
Check.That(result).IsEqualTo(expectedResult);
}
public void Parse_ParseAndOperator(string expression, string result)
{
// Arrange
ParameterExpression[] parameters = { ParameterExpressionHelper.CreateParameterExpression(typeof(bool), "x") };
var sut = new ExpressionParser(parameters, expression, null, null);
// Act
var parsedExpression = sut.Parse(null).ToString();
// Assert
Check.That(parsedExpression).Equals(result);
}
public void Parse_CastIntShouldReturnConstantExpression(string expression, object result)
{
// Arrange
ParameterExpression[] parameters = { ParameterExpressionHelper.CreateParameterExpression(typeof(bool), "x") };
var sut = new ExpressionParser(parameters, expression, null, null);
// Act
var constantExpression = (ConstantExpression)sut.Parse(null);
// Assert
Check.That(constantExpression.Value).Equals(result);
}
public void ParameterExpressionHelper_CreateParameterExpression(Type type, string expression, string expectedResult, string substitute, bool renameEmpty)
{
// Arrange
ParameterExpression[] parameters = { ParameterExpressionHelper.CreateParameterExpression(type, substitute, renameEmpty) };
var sut = new ExpressionParser(parameters, expression, null, null);
// Act
var parsedExpression = sut.Parse(null).ToString();
// Assert
Check.That(parsedExpression).Matches(expectedResult);
}
public void Parse_NullableShouldReturnNullable(string expression, object resultType, object result)
{
// Arrange
ParameterExpression[] parameters = { ParameterExpressionHelper.CreateParameterExpression(typeof(bool), "x") };
var sut = new ExpressionParser(parameters, expression, null, null);
// Act
var unaryExpression = (UnaryExpression)sut.Parse(null);
// Assert
Check.That(unaryExpression.Type).Equals(resultType);
Check.That(unaryExpression.ToString()).Equals(result);
}
/// <inheritdoc cref="ExpressionVisitor.VisitParameter"/>
protected override Expression VisitParameter(ParameterExpression node)
{
if (string.Equals(_oldName, node.Name, StringComparison.Ordinal))
{
if (_parameterExpression == null)
{
_parameterExpression = ParameterExpressionHelper.CreateParameterExpression(node.Type, _newName);
}
return(_parameterExpression);
// throw new InvalidOperationException($"The {nameof(ParameterExpressionRenamer)} can only rename 1 (Typed)ParameterExpression in an Expression.");
}
else
{
return(node);
}
}
public void Parse_PrioritizePropertyOrFieldOverTheType(string expression, string result)
{
// Arrange
ParameterExpression[] parameters = { ParameterExpressionHelper.CreateParameterExpression(typeof(Company), "company") };
var sut = new ExpressionParser(parameters, expression, null, _parsingConfig);
// Act
string parsedExpression = null;
try
{
parsedExpression = sut.Parse(null).ToString();
}
catch (ParseException e)
{
parsedExpression = e.Message;
}
// Assert
Check.That(parsedExpression).Equals(result);
}
