public async Task RetrievesUserFromCache()
{
var apiClient = Substitute.For<IApiClient>();
var cache = new InMemoryBlobCache();
await cache.InsertObject<AccountCacheItem>("user", new AccountCacheItem(CreateOctokitUser("octocat")));
var modelService = new ModelService(apiClient, cache, Substitute.For<IAvatarProvider>());
var user = await modelService.GetUserFromCache();
Assert.Equal("octocat", user.Login);
}