public void Resolve_ReplacesParameter_WithProjection ()
{
var node = new SelectManyExpressionNode (
CreateParseInfo(),
_collectionSelector,
ExpressionHelper.CreateLambdaExpression<int, int, AnonymousType> ((a, b) => new AnonymousType (a, b)));
node.Apply (QueryModel, ClauseGenerationContext);
var clause = (FromClauseBase) QueryModel.BodyClauses[0];
var expression = ExpressionHelper.CreateLambdaExpression<AnonymousType, bool> (i => i.a > 5 && i.b > 6);
var result = node.Resolve (expression.Parameters[0], expression.Body, ClauseGenerationContext);
var selectManySourceReference = new QuerySourceReferenceExpression (clause);
// new AnonymousType (SourceReference, selectManySourceReference).a > 5 && new AnonymousType (SourceReference, selectManySourceReference).b > 6
var newAnonymousTypeExpression = Expression.New (
typeof (AnonymousType).GetConstructor (new[] { typeof (int), typeof (int) }), SourceReference, selectManySourceReference);
var anonymousTypeMemberAExpression = Expression.MakeMemberAccess (newAnonymousTypeExpression, typeof (AnonymousType).GetProperty ("a"));
var anonymousTypeMemberBExpression = Expression.MakeMemberAccess (newAnonymousTypeExpression, typeof (AnonymousType).GetProperty ("b"));
var expectedResult = Expression.MakeBinary (
ExpressionType.AndAlso,
Expression.MakeBinary (ExpressionType.GreaterThan, anonymousTypeMemberAExpression, Expression.Constant (5)),
Expression.MakeBinary (ExpressionType.GreaterThan, anonymousTypeMemberBExpression, Expression.Constant (6)));
ExpressionTreeComparer.CheckAreEqualTrees (expectedResult, result);
}
public override void SetUp ()
{
base.SetUp();
_collectionSelector = ExpressionHelper.CreateLambdaExpression<int, double[]> (i => new double[1]);
_resultSelector = ExpressionHelper.CreateLambdaExpression<int, int, bool> ((i, j) => i > j);
_nodeWithResultSelector = new SelectManyExpressionNode (CreateParseInfo (SourceNode, "j"), _collectionSelector, _resultSelector);
}
public void Initialization_WithoutResultSelector ()
{
var nodeWithoutWithResultSelector = new SelectManyExpressionNode (CreateParseInfo (SourceNode, "j"), _collectionSelector, null);
var expectedResultSelectorParameter1 = Expression.Parameter (typeof (int), "i");
var expectedResultSelectorParameter2 = Expression.Parameter (typeof (double), "j");
var expectedResultSelector = Expression.Lambda (expectedResultSelectorParameter2, expectedResultSelectorParameter1, expectedResultSelectorParameter2);
ExpressionTreeComparer.CheckAreEqualTrees (expectedResultSelector, nodeWithoutWithResultSelector.ResultSelector);
}