Validate that #126 can be done

Author: FlorianRappl

src/AngleSharp.Css.Tests/Library/ExtractInfos.cs

@@ -0,0 +1,31 @@
+namespace AngleSharp.Css.Tests.Library
+{
+    using AngleSharp.Css.Dom;
+    using AngleSharp.Css.Values;
+    using AngleSharp.Dom;
+    using AngleSharp.Html.Dom;
+    using NUnit.Framework;
+
+    [TestFixture]
+    public class ExtractInfosTests
+    {
+        [Test]
+        public void GetFontUrl_Issue126()
+        {
+            var css = @"@font-face {
+  font-family: 'Inter';
+  font-style: normal;
+  font-weight: 400;
+  src: url(https://example.org/some-font.ttf) format('truetype');
+}";
+            var html = $"<style>{css}</style>";
+            var document = html.ToHtmlDocument(Configuration.Default.WithCss());
+            var style = document.QuerySelector<IHtmlStyleElement>("style");
+            var sheet = style.Sheet as ICssStyleSheet;
+            var fontFace = sheet.Rules[0] as ICssFontFaceRule;
+            var src = fontFace.GetProperty("src").RawValue;
+            var url = ((src as ICssMultipleValue)[0] as ICssMultipleValue)[0] as CssUrlValue;
+            Assert.AreEqual("https://example.org/some-font.ttf", url.Path);
+        }
+    }
+}