public void UseTwoDifferentContexts()
{
using (var ctx1 = new MyTestDbContext())
{
ctx1.SetupAsTestDbContext();
var p1 = new Person { Name = "Jürgen" };
p1.Addresses.Add(new Adresse { Name = "AlterWert1" });
p1.Addresses.Add(new Adresse { Name = "AlterWert2" });
ctx1.Persons.Add(p1);
ctx1.SaveChanges();
}
using (var ctx2 = new MyTestDbContext())
{
ctx2.SetupAsTestDbContext();
var persons = ctx2.Persons;
Assert.AreEqual(2, persons.First().Addresses.Count());
}
Person p2;
using (var ctx3 = new MyTestDbContext())
{
ctx3.SetupAsTestDbContext();
p2 = ctx3.Persons.FirstOrDefault(x => x.Id == 1);
p2.Name = "ÜberschriebenerWert";
p2.Addresses.First().Name = "Hallo";
}
using (var ctx4 = new MyTestDbContext())
{
ctx4.SetupAsTestDbContext();
ctx4.Entry(p2).State = EntityState.Modified;
ctx4.SaveChanges();
}
using (var ctx5 = new MyTestDbContext())
{
ctx5.SetupAsTestDbContext();
var p3 = ctx5.Persons.FirstOrDefault(x => x.Id == 1);
Assert.That(p2, Is.Not.EqualTo(p3));
Assert.That(p3.Name, Is.EqualTo("ÜberschriebenerWert"));
Assert.That(p3.Addresses.First().Name, Is.EqualTo("AlterWert1"));
}
}