public void ExplicitLoading()
{
using (var context = new WorldContext())
{
context.PopulateData();
var america = context.Continents.Single(c => c.Code == "AM");
Assert.Null(america.Countries);
context.Entry(america)
.Collection(c => c.Countries)
.Load();
Assert.Equal(5, america.Countries.Count);
Assert.Equal("United States", america.Countries.Single(c => c.Code == "US").Name);
}
}
public void ExplicitLoadingQueryingRelatedEntitites()
{
using (var context = new WorldContext())
{
context.PopulateData();
var asia = context.Continents.Single(c => c.Code == "AS");
Assert.Null(asia.Countries);
var list = context.Entry(asia)
.Collection(c => c.Countries)
.Query()
.Where(c => c.Name.Contains("i"))
.ToList();
Assert.Equal(2, asia.Countries.Count);
Assert.Equal(2, list.Count);
Assert.Equal("China", list.Single(c => c.Code == "CN").Name);
Assert.Equal("India", list.Single(c => c.Code == "IN").Name);
}
}