public void ChangeOwnerOfPossession_ChangesReflectedInGetPossessionsOfOwner()
{
var possession = new TestPossession();
var ownerOne = new TestOwner();
var ownerTwo = new TestOwner();
var relationship = new PossessionRelationship <TestOwner, TestPossession>();
relationship.ChangeOwnerOfPossession(possession, ownerOne);
CollectionAssert.Contains(relationship.GetPossessionsOfOwner(ownerOne), possession,
"OwnerOne does not have the possession");
relationship.ChangeOwnerOfPossession(possession, ownerTwo);
CollectionAssert.DoesNotContain(relationship.GetPossessionsOfOwner(ownerOne), possession,
"OwnerOne incorrectly has the possession");
CollectionAssert.Contains(relationship.GetPossessionsOfOwner(ownerTwo), possession,
"OwnerTwo does not have the possession");
relationship.ChangeOwnerOfPossession(possession, null);
CollectionAssert.DoesNotContain(relationship.GetPossessionsOfOwner(ownerTwo), possession,
"OwnerTwo falsely has the possession");
}
public void GetPossessionsOfOwner_ThrowsOnNullArgument()
{
var relationship = new PossessionRelationship <TestOwner, TestPossession>();
Assert.Throws <ArgumentNullException>(() => relationship.GetPossessionsOfOwner(null),
"GetPossessionOfOwner did not throw correctly");
}
