public async Task GetsNewtonsoftJsonRegistrationIndex()
{
var result = await _target.GetRegistrationIndexOrNullAsync("Newtonsoft.Json");
Assert.NotNull(result);
Assert.Equal(2, result.Pages.Count);
Assert.True(result.Pages[0].Count == 64);
Assert.True(result.Pages[0].ItemsOrNull.Count == 64);
Assert.Equal(NewtonsoftJsonLowerVersion, result.Pages[0].Lower);
Assert.Equal(NewtonsoftJsonUpperVersion, result.Pages[0].Upper);
}
