public override void SetUp ()
{
base.SetUp ();
var predicate = ExpressionHelper.CreateLambdaExpression<int, bool> (i => i > 5);
_node = new WhereExpressionNode (CreateParseInfo (), predicate);
}
protected ResultOperatorExpressionNodeBase(
MethodCallExpressionParseInfo parseInfo, LambdaExpression optionalPredicate, LambdaExpression optionalSelector)
: base(parseInfo)
{
if (optionalPredicate != null && optionalPredicate.Parameters.Count != 1)
{
throw new ArgumentException("OptionalPredicate must have exactly one parameter.", "optionalPredicate");
}
if (optionalSelector != null && optionalSelector.Parameters.Count != 1)
{
throw new ArgumentException("OptionalSelector must have exactly one parameter.", "optionalSelector");
}
if (optionalPredicate != null)
{
Source = new WhereExpressionNode(parseInfo, optionalPredicate);
}
if (optionalSelector != null)
{
var newParseInfo = new MethodCallExpressionParseInfo(parseInfo.AssociatedIdentifier, Source, parseInfo.ParsedExpression);
Source = new SelectExpressionNode(newParseInfo, optionalSelector);
}
ParsedExpression = parseInfo.ParsedExpression;
}
public void GetResolvedPredicate ()
{
var predicate = ExpressionHelper.CreateLambdaExpression<int, bool> (i => i > 5);
var node = new WhereExpressionNode (CreateParseInfo (), predicate);
var expectedResult = Expression.MakeBinary (ExpressionType.GreaterThan, SourceReference, Expression.Constant (5));
var result = node.GetResolvedPredicate (ClauseGenerationContext);
ExpressionTreeComparer.CheckAreEqualTrees (expectedResult, result);
}
public void Resolve_PassesExpressionToSource ()
{
var sourceMock = MockRepository.GenerateMock<IExpressionNode>();
var predicate = ExpressionHelper.CreateLambdaExpression<int, bool> (i => i > 5);
var node = new WhereExpressionNode (CreateParseInfo (sourceMock), predicate);
var expression = ExpressionHelper.CreateLambdaExpression();
var parameter = ExpressionHelper.CreateParameterExpression();
var expectedResult = ExpressionHelper.CreateExpression();
sourceMock.Expect (mock => mock.Resolve (parameter, expression, ClauseGenerationContext)).Return (expectedResult);
var result = node.Resolve (parameter, expression, ClauseGenerationContext);
sourceMock.VerifyAllExpectations();
Assert.That (result, Is.SameAs (expectedResult));
}
private static MethodCallExpressionParseInfo TransformParseInfo (
MethodCallExpressionParseInfo parseInfo,
LambdaExpression optionalPredicate,
LambdaExpression optionalSelector)
{
var source = parseInfo.Source;
if (optionalPredicate != null)
source = new WhereExpressionNode (parseInfo, optionalPredicate);
if (optionalSelector != null)
{
var newParseInfo = new MethodCallExpressionParseInfo (parseInfo.AssociatedIdentifier, source, parseInfo.ParsedExpression);
source = new SelectExpressionNode (newParseInfo, optionalSelector);
}
return new MethodCallExpressionParseInfo (parseInfo.AssociatedIdentifier, source, parseInfo.ParsedExpression);
}
private static MethodCallExpressionParseInfo TransformParseInfo(
MethodCallExpressionParseInfo parseInfo,
LambdaExpression optionalPredicate,
LambdaExpression optionalSelector)
{
var source = parseInfo.Source;
if (optionalPredicate != null)
{
source = new WhereExpressionNode(parseInfo, optionalPredicate);
}
if (optionalSelector != null)
{
var newParseInfo = new MethodCallExpressionParseInfo(parseInfo.AssociatedIdentifier, source, parseInfo.ParsedExpression);
source = new SelectExpressionNode(newParseInfo, optionalSelector);
}
return(new MethodCallExpressionParseInfo(parseInfo.AssociatedIdentifier, source, parseInfo.ParsedExpression));
}
protected ResultOperatorExpressionNodeBase(
MethodCallExpressionParseInfo parseInfo, LambdaExpression optionalPredicate, LambdaExpression optionalSelector)
: base(parseInfo)
{
if (optionalPredicate != null && optionalPredicate.Parameters.Count != 1)
throw new ArgumentException ("OptionalPredicate must have exactly one parameter.", "optionalPredicate");
if (optionalSelector != null && optionalSelector.Parameters.Count != 1)
throw new ArgumentException ("OptionalSelector must have exactly one parameter.", "optionalSelector");
if (optionalPredicate != null)
Source = new WhereExpressionNode (parseInfo, optionalPredicate);
if (optionalSelector != null)
{
var newParseInfo = new MethodCallExpressionParseInfo (parseInfo.AssociatedIdentifier, Source, parseInfo.ParsedExpression);
Source = new SelectExpressionNode (newParseInfo, optionalSelector);
}
ParsedExpression = parseInfo.ParsedExpression;
}