public void MembershipByTeam()
{
var mockDb = new MockDatabase();
DoubleDb(mockDb);
MembershipController controller = new MembershipController(mockDb);
var result = controller.ByTeam(1) as OkNegotiatedContentResult <List <Membership> >;
Assert.IsNotNull(result);
Assert.IsTrue(result.Content.Select(a => a.AccountId).Contains(1));
Assert.IsTrue(result.Content.Select(a => a.AccountId).Contains(2));
}