public override void Arrange()
        {
            base.Arrange();

            MockTestEntitySet.Setup(s => s.FindAsync(It.IsAny <object[]>())).Returns(Task.FromResult(new TestEntity {
                Id = 1
            }));
        }
        public override void Arrange()
        {
            base.Arrange();

            MockTestEntitySet.Setup(s => s.Find(It.IsAny <object[]>())).Returns(new TestEntity {
                Id = 1
            });
        }
        public override void Arrange()
        {
            base.Arrange();

            MockTestEntitySet.Setup(s => s.Remove(It.Is <TestEntity>(e => e.Id == 1))).Returns(new TestEntity {
                Id = 1
            });
        }