Merge pull request #74 from campersau/getinnertextcomment

Don't throw in GetInnerText if there is no element style. e.g. for co…

Author: FlorianRappl

src/AngleSharp.Css.Tests/Extensions/InnerText.cs

@@ -71,6 +71,7 @@ public void SetInnerText(String fixture, String expectedInnerText, String expect
         [TestCase("<textarea>test</textarea>", "")]
         [TestCase("<script>test</noscript>", "")]
         [TestCase("<style>test</style>", "")]
+        [TestCase("<!-- comment -->Text<!-- comment --> with <!-- comment -->comments<!-- comment -->", "Text with comments")]
         public void GetInnerText(String fixture, String expected)
         {
             var defaultSheet = new CssDefaultStyleSheetProvider();

src/AngleSharp.Css/Extensions/ElementExtensions.cs

@@ -202,7 +202,7 @@ private static void ItcInCssBox(ICssStyleDeclaration elementStyle, ICssStyleDecl
                 {
                     sb.Append(Symbols.LineFeed);
                 }
-                else if ((node is IHtmlTableCellElement && String.IsNullOrEmpty(elementStyle.GetDisplay())) || elementStyle.GetDisplay() == CssKeywords.TableCell)
+                else if (elementStyle != null && ((node is IHtmlTableCellElement && String.IsNullOrEmpty(elementStyle.GetDisplay())) || elementStyle.GetDisplay() == CssKeywords.TableCell))
                 {
                     if (node.NextSibling is IElement nextSibling)
                     {
@@ -214,7 +214,7 @@ private static void ItcInCssBox(ICssStyleDeclaration elementStyle, ICssStyleDecl
                         }
                     }
                 }
-                else if ((node is IHtmlTableRowElement && String.IsNullOrEmpty(elementStyle.GetDisplay())) || elementStyle.GetDisplay() == CssKeywords.TableRow)
+                else if (elementStyle != null && ((node is IHtmlTableRowElement && String.IsNullOrEmpty(elementStyle.GetDisplay())) || elementStyle.GetDisplay() == CssKeywords.TableRow))
                 {
                     if (node.NextSibling is IElement nextSibling)
                     {