public void TestMethodDelete()
{
var context = new TestBankDBContext();
var item = GetSingleItem();
context.Branches.Add(item);
var controller = new BranchesController(context);
var result = controller.DeleteBranch(1) as OkNegotiatedContentResult <Branch>;
Assert.IsNotNull(result);
Assert.AreEqual(item.Id, result.Content.Id);
}