public async void GetGlobalDeviceListColumnsAsyncTest() { var columns = fixture.Create <IEnumerable <DeviceListColumns> >(); var userSetting = new UserSetting() { Key = fixture.Create <string>(), Value = JsonConvert.SerializeObject(columns) }; _userSettingsRepository .Setup(x => x.GetGlobalUserSettingAsync(It.IsAny <string>())) .ReturnsAsync(userSetting); var ret = await _userSettingsLogic.GetGlobalDeviceListColumnsAsync(); Assert.NotNull(ret); Assert.Equal(columns.Count(), ret.Count()); Assert.Equal(columns.First().Name, ret.First().Name); }