public async Task MongoUserStore_ShouldPutThingsIntoUsersCollectionByDefault()
        {
            var user = new MongoIdentityUser(TestUtils.RandomString(10));


            using (var store = new MongoUserStore <MongoIdentityUser>(options))
            {
                // ACT
                var result = await store.CreateAsync(user, CancellationToken.None);

                // ASSERT
                Assert.True(result.Succeeded);

                Assert.Equal(1, await store.GetUserCountAsync());
            }
        }