public void ApiDeleteActivity()
{
long id = 17;
var activity = _sampleActivity2;
var mock = new Mock <IActivityService>();
var uowMock = new Mock <IUnitOfWork>();
uowMock.Setup(u => u.ActivityService)
.Returns(mock.Object);
var con = new ActivitiesController(uowMock.Object);
var response = con.DeleteActivity(id);
Assert.IsInstanceOfType(response, typeof(OkResult));
mock.Verify(s => s.DeleteActivity(activity.ID));
uowMock.Verify(u => u.Save());
}