Merge pull request #10 from FrendsPlatform/preserve-whitespace

Preserve whitespace on transform

Author: EkiH

Frends.Xml.Tests/Tests.cs

@@ -272,5 +272,22 @@ public void ConvertJsonToXmlString()
           var result = Frends.Xml.Xml.ConvertJsonToXml(new JsonToXmlInput() {Json = json});
           Assert.That(result, Does.Contain("<url>http://www.google.com</url>"));
         }
+
+        [Test]
+        public void WhiteSpaceIsPreserved()
+        {
+            const string transformXml = @"<?xml version=""1.0""?>
+                                <test></test>";
+
+            const string xslt = @"<?xml version=""1.0""?>
+                                <xsl:stylesheet xmlns:xsl=""http://www.w3.org/1999/XSL/Transform"" version=""2.0"">
+                                  <xsl:template match=""test"">
+                                    <xsl:value-of select="".""/>
+                                  </xsl:template>
+                                </xsl:stylesheet>";
+
+            var res = Frends.Xml.Xml.Transform(new TransformInput() { Xml = transformXml, Xslt = xslt });
+            Assert.That(res, Is.EqualTo(@"<?xml version=""1.0"" encoding=""UTF-8""?>")); // no newline caused by empty tag
+        }
     }
 }

Frends.Xml/Xml.cs

@@ -69,6 +69,7 @@ public static string Transform(TransformInput input)
                 {
                     //XmlDocument always produces MemoryStream where its encoding matches the input XML's declaration
                     XmlDocument xmldoc = new XmlDocument();
+                    xmldoc.PreserveWhitespace = true;
                     xmldoc.LoadXml(input.Xml);
                     xmldoc.Save(inputStream);
                     xmldoc = null;