public void WhenBaseUrlIsNullItHandlesAbsoluteHeadLinks()
{
// Arrange
string html = @"
<html>
<head>
<link rel=""search""
type=""application/opensearchdescription+xml""
href=""http://example.com""
title=""Content search"" />
</head>
</html>";
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
// Act
ILink l1 = doc.Links((Uri)null).Select("search");
ILink l2 = doc.Links((Response)null).Select("search");
ILink l3 = doc.DocumentNode.Links((Uri)null).Select("search");
ILink l4 = doc.DocumentNode.Links((Response)null).Select("search");
ILink l5 = doc.DocumentNode.SelectNodes("//*").Links((Uri)null).Select("search");
ILink l6 = doc.DocumentNode.SelectNodes("//*").Links((Response)null).Select("search");
ILink l7 = doc.DocumentNode.SelectNodes("//link").First().Link((Uri)null);
ILink l8 = doc.DocumentNode.SelectNodes("//link").First().Link((Response)null);
// Assert
Assert.AreEqual("http://example.com/", l1.HRef.AbsoluteUri);
Assert.AreEqual("http://example.com/", l2.HRef.AbsoluteUri);
Assert.AreEqual("http://example.com/", l3.HRef.AbsoluteUri);
Assert.AreEqual("http://example.com/", l4.HRef.AbsoluteUri);
Assert.AreEqual("http://example.com/", l5.HRef.AbsoluteUri);
Assert.AreEqual("http://example.com/", l6.HRef.AbsoluteUri);
Assert.AreEqual("http://example.com/", l7.HRef.AbsoluteUri);
Assert.AreEqual("http://example.com/", l8.HRef.AbsoluteUri);
}