public async Task apiSubscribeTest()
{
memMoq.Setup(m => m.CreateEntry(It.IsAny <object>())).Returns(new Mock <ICacheEntry>().Object);
LogIn(users[1]);
// open, but user[1] is participant
UserContext _context = GetContext();
int c = await _context.GroupSubscriber.CountAsync();
JsonResult res = await controller.apiSubscribe(groups[0].Id);
Assert.AreEqual(c, subscribers.Count);
// closed (no subscribers)
c = GetGroupSubCount(groups[1].Id);
res = await controller.apiSubscribe(groups[1].Id);
Assert.AreEqual(c, GetGroupSubCount(groups[1].Id));
// private (no subscribers)
c = GetGroupSubCount(groups[1].Id);
res = await controller.apiSubscribe(groups[2].Id);
Assert.AreEqual(c, GetGroupSubCount(groups[2].Id));
LogIn(users[2]);
// open, but user[1] is subscriber
c = GetGroupSubCount(groups[0].Id);
res = await controller.apiSubscribe(groups[0].Id);
Assert.AreEqual(c - 1, GetGroupSubCount(groups[0].Id));
res = await controller.apiSubscribe(groups[0].Id);
Assert.AreEqual(c, GetGroupSubCount(groups[0].Id));
// closed (no subscribers)
c = GetGroupSubCount(groups[1].Id);
res = await controller.apiSubscribe(groups[1].Id);
Assert.AreEqual(c, GetGroupSubCount(groups[1].Id));
// private (no subscribers)
c = GetGroupSubCount(groups[2].Id);
res = await controller.apiSubscribe(groups[2].Id);
Assert.AreEqual(c, GetGroupSubCount(groups[2].Id));
LogIn(users[3]);
// open
c = GetGroupSubCount(groups[0].Id);
res = await controller.apiSubscribe(groups[0].Id);
Assert.AreEqual(c + 1 + groups[0].Admins.Count, new List <UserModel>((IEnumerable <UserModel>)res.Value.GetType().GetProperty("Subscribers").GetValue(res.Value)).Count);
Assert.True((bool)res.Value.GetType().GetProperty("IsSubscribed").GetValue(res.Value));
Assert.AreEqual(c + 1, GetGroupSubCount(groups[0].Id));
// unsubscribe
res = await controller.apiSubscribe(groups[0].Id);
Assert.AreEqual(c + groups[0].Admins.Count, new List <UserModel>((IEnumerable <UserModel>)res.Value.GetType().GetProperty("Subscribers").GetValue(res.Value)).Count);
Assert.False((bool)res.Value.GetType().GetProperty("IsSubscribed").GetValue(res.Value));
Assert.AreEqual(c, GetGroupSubCount(groups[0].Id));
// closed (no subscribers)
c = GetGroupSubCount(groups[1].Id);
res = await controller.apiSubscribe(groups[1].Id);
Assert.IsInstanceOf <JsonError>(res.Value);
Assert.AreEqual(c, GetGroupSubCount(groups[1].Id));
// private (no subscribers)
c = GetGroupSubCount(groups[2].Id);
res = await controller.apiSubscribe(groups[2].Id);
Assert.IsInstanceOf <JsonError>(res.Value);
Assert.AreEqual(c, GetGroupSubCount(groups[2].Id));
res = await controller.apiSubscribe(1000);
Assert.IsInstanceOf <JsonError>(res.Value);
}