public void MissingHeadTagDoesNotCrash()
{
// Arrange
var html = "<html><body>Hello</body></html>";
var extractor = new TwitterCardExtractor();
// Act
var card = extractor.ExtractCard(html);
// Assert
Assert.IsNull(card);
}
public void DuplicateMetaDataDoesNotCrash()
{
// Arrange
var html = "<html><head><meta name=\"twitter:test\" value=\"test\" /></head><body>Hello</body></html>";
var extractor = new TwitterCardExtractor();
// Act
var card = extractor.ExtractCard(html);
// Assert
Assert.IsNotNull(card);
}
public async Task ExtendedTwitterStatusUrlsAreNotExtracted()
{
// Arrange
var urls = new[]
{
"https://twitter.com/i/web/status/123",
"http://twitter.com/i/web/status/123",
"https://www.twitter.com/i/web/status/123",
"https://tWitter.com/i/web/status/123",
"http://TWITTER.Com/i/web/status/123"
};
var extractor = new TwitterCardExtractor();
// Act
var cardTasks = urls.Select(u => extractor.ExtractCard(new System.Uri(u))).ToArray();
await Task.WhenAll(cardTasks);
// Assert
Assert.IsTrue(cardTasks.All(t => t.Result == null));
}