public async void GetsAllTenants()
        {
            var options = TestUtil.GetMemDbOptions("GetsAllTenants");
            var count   = 0;

            using (var db = new AptMgmtDbContext(options))
            {
                var repo    = (ITenant) new TenantRepository(db);
                var tenant  = TestUtil.NewTenant(db);
                var tenants = await repo.GetTenants();

                count = tenants.Count();
            }
            using (var db = new AptMgmtDbContext(options))
            {
                ITenant repo       = (ITenant) new TenantRepository(db);
                var     getTenants = await repo.GetTenants();

                var tenantCount = getTenants.Count();
                Assert.Equal(tenantCount, count);
            }
        }