public void TestQueryOperators_QueryMethods()
{
// test where
EntityQuery<City> citiesQuery = new EntityQuery<City>(_testClient, "GetCities", null, false, true);
citiesQuery = citiesQuery.Where(c => c.CountyName == "Lucas");
List<ServiceQueryPart> parts = QuerySerializer.Serialize(citiesQuery.Query);
Assert.AreEqual(1, parts.Count);
Assert.AreEqual("where", parts[0].QueryOperator);
Assert.AreEqual("(it.CountyName==\"Lucas\")", parts[0].Expression);
// test orderby, thenby
citiesQuery = new EntityQuery<City>(_testClient, "GetCities", null, false, true);
citiesQuery = citiesQuery.OrderBy(c => c.Name).ThenBy(c => c.StateName);
parts = QuerySerializer.Serialize(citiesQuery.Query);
Assert.AreEqual(1, parts.Count);
Assert.AreEqual("orderby", parts[0].QueryOperator);
Assert.AreEqual("it.Name, it.StateName", parts[0].Expression);
// test orderby desc, thenby desc
citiesQuery = new EntityQuery<City>(_testClient, "GetCities", null, false, true);
citiesQuery = citiesQuery.OrderByDescending(c => c.Name).ThenByDescending(c => c.StateName);
parts = QuerySerializer.Serialize(citiesQuery.Query);
Assert.AreEqual(1, parts.Count);
Assert.AreEqual("orderby", parts[0].QueryOperator);
Assert.AreEqual("it.Name desc, it.StateName desc", parts[0].Expression);
// test skip and take
citiesQuery = new EntityQuery<City>(_testClient, "GetCities", null, false, true);
citiesQuery = citiesQuery.Skip(20).Take(10);
parts = QuerySerializer.Serialize(citiesQuery.Query);
Assert.AreEqual(2, parts.Count);
Assert.AreEqual("skip", parts[0].QueryOperator);
Assert.AreEqual("20", parts[0].Expression);
Assert.AreEqual("take", parts[1].QueryOperator);
Assert.AreEqual("10", parts[1].Expression);
// test all together
citiesQuery = new EntityQuery<City>(_testClient, "GetCities", null, false, true)
.Where(c => c.CountyName == "Lucas")
.OrderBy(c => c.Name).ThenBy(c => c.StateName)
.Skip(20)
.Take(10);
parts = QuerySerializer.Serialize(citiesQuery.Query);
Assert.AreEqual(4, parts.Count);
}
public void NonComposableQuery()
{
EntityQuery<City> citiesQuery = new EntityQuery<City>(_testClient, "GetCities", null, false, false);
IQueryable<City> queryable = new City[0].AsQueryable();
string expectedMessage = string.Format(Resource.EntityQuery_NotComposable, "City", "GetCities");
ExceptionHelper.ExpectInvalidOperationException(delegate
{
citiesQuery.Where(p => p.StateName == "Toledo");
}, expectedMessage);
ExceptionHelper.ExpectInvalidOperationException(delegate
{
citiesQuery.Skip(1);
}, expectedMessage);
ExceptionHelper.ExpectInvalidOperationException(delegate
{
citiesQuery.Take(1);
}, expectedMessage);
ExceptionHelper.ExpectInvalidOperationException(delegate
{
citiesQuery.OrderBy(p => p.CountyName);
}, expectedMessage);
ExceptionHelper.ExpectInvalidOperationException(delegate
{
citiesQuery.OrderByDescending(p => p.CountyName);
}, expectedMessage);
ExceptionHelper.ExpectInvalidOperationException(delegate
{
citiesQuery.ThenBy(p => p.CountyName);
}, expectedMessage);
ExceptionHelper.ExpectInvalidOperationException(delegate
{
citiesQuery.ThenByDescending(p => p.CountyName);
}, expectedMessage);
}