Fixed the NRE for IRenderDevice in @media #20

2019-05-05 20:05:08 +02:00 · 2019-05-05 20:05:08 +02:00 · 9cc365f6a2
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -5,6 +5,7 @@ Released on Thursday, May 5 2019.
 - Reference latest AngleSharp
 - Returns `null` in `GetStyle` if CSS not configured (#15)
 - Added `pointer-events` and fixed border recombination (#16)
+- Fixed exception when not providing an `IRenderDevice` (#20)
 - Fixed missing `CssStylingService.Default` in cascade (#21)
 - Added extension helper `SetStyle` to modify all styles of many elements (#22)
 - Introduced special converter for the `src` declaration (#25)
--- a/src/AngleSharp.Css.Tests/Styling/HtmlCssIntegration.cs
+++ b/src/AngleSharp.Css.Tests/Styling/HtmlCssIntegration.cs
@ -432,7 +432,7 @@ namespace AngleSharp.Css.Tests.Styling
        }

        [Test]
-        public static void DefaultStyleSheetTest_Issue21()
+        public void DefaultStyleSheetTest_Issue21()
        {
            var browsingContext = BrowsingContext.New(Configuration.Default.WithCss());
            var htmlParser = browsingContext.GetService<IHtmlParser>();
@ -440,5 +440,15 @@ namespace AngleSharp.Css.Tests.Styling
            var boldStyle = document.Body.FirstElementChild.ComputeCurrentStyle();
            Assert.AreEqual("bolder", boldStyle.GetFontWeight());
        }
+
+        [Test]
+        public void MediaRuleCssCausesException_Issue20()
+        {
+            var browsingContext = BrowsingContext.New(Configuration.Default.WithCss());
+            var htmlParser = browsingContext.GetService<IHtmlParser>();
+            var document = htmlParser.ParseDocument("<html><head><style>@media screen { }</style></head><body></body></html>");
+            var style = document.Body.ComputeCurrentStyle();
+            Assert.IsNotNull(style);
+        }
    }
 }