public async Task ReadEmptyAtomFeed()
{
using var fs = new FileStream("feed.atom.empty.xml", FileMode.Open);
var validDoc = await XDocument.LoadAsync(fs, LoadOptions.None, CancellationToken.None);
var readResult = await _feedReader.ReadAsync(validDoc);
Assert.NotNull(readResult);
Assert.True(readResult.IsValid);
Assert.NotNull(readResult.Feed);
Assert.NotNull(readResult.Articles);
Assert.Equal(DateTime.ParseExact("2019-12-24T01:42:28Z", "yyyy-MM-dd'T'HH:mm:ssZ", null), readResult.Feed.LastUpdated);
Assert.Equal("https://daringfireball.net/", readResult.Feed.Link);
Assert.Empty(readResult.Articles);
}
