public void BuildCondition_WhenFilteringWithPredicate_ShouldApplyThisPredicate()
{
var rows = SiteRankingCollections.First10000Rows;
Func <string, char, bool> containsLetter = (s, c) => s.Contains(c);
var expected = rows.Where(x => containsLetter(x.TopLevelDomain, 'c') && containsLetter(x.TopLevelDomain, 'o')).ToList();
TableMappingByPredicate <SiteRanking, SiteRankingSearch, char> mapping = new TableMappingByPredicate <SiteRanking, SiteRankingSearch, char>(s => s.TLDContainsChar, (r, c) => containsLetter(r.TopLevelDomain, c), false);
var criteria = mapping.ExtractCriteria(new SiteRankingSearch {
TLDContainsChar = new [] { 'c', 'o' }
});
ParameterExpression paramExpr = Expression.Parameter(typeof(SiteRanking), "row");
var lambda = Expression.Lambda <Func <SiteRanking, bool> >(criteria.BuildCondition(paramExpr), paramExpr);
var actual = rows.Where(lambda.Compile()).ToList();
CollectionAssert.AreEquivalent(expected, actual);
}
public TableCriteriaForMappingByPredicate(TableMappingByPredicate <TRow, TSearch, TColumn> mapping, SearchCriteriaByValue <TColumn> criteria)
{
_mapping = mapping;
_criteria = criteria;
}