public void TestReadPreferredSpouseRelationship()
{
var p = (PersonState)tree.AddPerson(TestBacking.GetCreateMalePerson()).Get();
cleanup.Add(p);
var s1 = tree.AddPerson(TestBacking.GetCreateFemalePerson());
cleanup.Add(s1);
var s2 = tree.AddPerson(TestBacking.GetCreateFemalePerson());
cleanup.Add(s2);
p.AddSpouse(s1);
p.AddSpouse(s2);
var me = tree.ReadCurrentUser();
var person = tree.ReadPersonById(p.Person.Id);
// Ensure the target relationship exists
person.LoadSpouseRelationships();
var state = (IPreferredRelationshipState)person.ReadRelationship(person.Entity.Relationships[0]);
tree.UpdatePreferredSpouseRelationship(me.User.TreeUserId, p.Person.Id, state);
var state2 = (FamilyTreeRelationshipState)tree.ReadPreferredSpouseRelationship(me.User.TreeUserId, p.Person.Id);
Assert.AreEqual(HttpStatusCode.SeeOther, state2.Response.StatusCode);
Assert.IsNotNull(state2.Headers.Get("Location").Single());
}