public void Manually_Remove_Reference()
{
using (var personsContext = new PersonsContext(DbContextOptions))
{
var him = new Person {
Id = 1, Name = "Him", SpouseId = 2
};
var her = new Person {
Id = 2, Name = "Her", SpouseId = 1
};
personsContext.Persons.Add(him);
personsContext.Persons.Add(her);
personsContext.SaveChanges();
}
using (var personsContext = new PersonsContext(DbContextOptions))
{
var him = personsContext.Persons.Find(1);
var her = personsContext.Persons.Find(2);
him.SpouseId = null;
personsContext.SaveChanges();
her.SpouseId = null;
personsContext.SaveChanges();
personsContext.Persons.Remove(him);
personsContext.SaveChanges();
}
using (var personsContext = new PersonsContext(DbContextOptions))
{
Assert.Null(personsContext.Find <Person>(1));
}
}
public void OnDelete_SetNull()
{
using (var personsContext = new PersonsContext(DbContextOptions))
{
var him = new Person {
Id = 1, Name = "Him", SpouseId = 2
};
var her = new Person {
Id = 2, Name = "Her", SpouseId = 1
};
personsContext.Persons.Add(him);
personsContext.Persons.Add(her);
personsContext.SaveChanges();
}
using (var personsContext = new PersonsContext(DbContextOptions))
{
var him = personsContext.Persons.Find(1);
personsContext.Persons.Remove(him);
personsContext.SaveChanges();
}
using (var personsContext = new PersonsContext(DbContextOptions))
{
Assert.Null(personsContext.Find <Person>(1));
}
}