public void GetAllFilterByCurrent_Test()
{
// Arrange
TestKolgraphEntities context = new TestKolgraphEntities();
var repository = new CityRepository(context);
// Act
IEnumerable <city> result = repository.GetAllFilterByCurrent();
// Assert
Assert.IsNotNull(result);
Assert.AreEqual(context.city.Where(x => x.isCurrent).Count(), result.Count());
Assert.AreEqual(result.Where(x => x.isCurrent).Count(), result.Count());
}