public void Apply()
{
var newQueryModel = _nodeWithElementSelector.Apply(QueryModel, ClauseGenerationContext);
Assert.That(newQueryModel, Is.SameAs(QueryModel));
Assert.That(QueryModel.ResultOperators[0], Is.InstanceOf(typeof(GroupResultOperator)));
var resultOperator = (GroupResultOperator)QueryModel.ResultOperators[0];
Assert.That(resultOperator.ItemName, Is.EqualTo(_nodeWithElementSelector.AssociatedIdentifier));
Assert.That(resultOperator.KeySelector, Is.SameAs(_nodeWithElementSelector.GetResolvedKeySelector(ClauseGenerationContext)));
Assert.That(resultOperator.ElementSelector, Is.SameAs(_nodeWithElementSelector.GetResolvedOptionalElementSelector(ClauseGenerationContext)));
}
public void Apply_WithoutElementSelector_SuppliesStandardSelector()
{
_nodeWithoutElementSelector.Apply(QueryModel, ClauseGenerationContext);
var resultOperator = (GroupResultOperator)QueryModel.ResultOperators[0];
var expectedElementSelector = ExpressionHelper.Resolve <int, int> (QueryModel.MainFromClause, i => i);
ExpressionTreeComparer.CheckAreEqualTrees(expectedElementSelector, resultOperator.ElementSelector);
}