public void SimpleSelect()
{
var expression = SelectTestQueryGenerator.CreateSimpleQuery(QuerySource).Expression;
var queryModel = QueryParser.GetParsedQuery(expression);
var selectClause = queryModel.SelectClause;
CheckResolvedExpression <Cook, Cook> (selectClause.Selector, queryModel.MainFromClause, s => s);
}
public void TreeWithSubquery()
{
Expression subQuery = SelectTestQueryGenerator.CreateSimpleQuery(ExpressionHelper.CreateQueryable <Cook>()).Expression;
Expression surroundingExpression = Expression.Lambda(subQuery);
Expression newExpression = SubQueryFindingExpressionTreeVisitor.Process(surroundingExpression, _methodInfoBasedNodeTypeRegistry);
Assert.That(newExpression, Is.Not.SameAs(surroundingExpression));
Assert.That(newExpression, Is.InstanceOf(typeof(LambdaExpression)));
var newLambdaExpression = (LambdaExpression)newExpression;
Assert.That(newLambdaExpression.Body, Is.InstanceOf(typeof(SubQueryExpression)));
var newSubQueryExpression = (SubQueryExpression)newLambdaExpression.Body;
Assert.That(
((QuerySourceReferenceExpression)newSubQueryExpression.QueryModel.SelectClause.Selector).ReferencedQuerySource,
Is.SameAs(newSubQueryExpression.QueryModel.MainFromClause));
}