XmlDocument Fix (#12)

* Fixed the GetXml() of XmlDocument (double declaration) and added GetOriginalXml().

* Format of documents

* Removing GetOriginalXml as it's not really possible due to the Parser.

Parsers.Common/Xml/Parser.cs

@@ -201,6 +201,7 @@ private void Step1_CharsToTokens(Queue<Token> tokens)
                 tokens.Enqueue(token);
             }
         }
+
         private void Step2_TokensToTree(Queue<Token> tokens, out XmlDocument root)
         {
             Stack<XmlNode> nodes = new Stack<XmlNode>();

Parsers.Common/Xml/XmlDocument.cs

@@ -52,15 +52,11 @@ public static XmlDocument Load(string path)
             return Parse(xml);
         }
 
+        /// <inheritdoc />
         public override string GetXml()
         {
             var sb = new StringBuilder();
 
-            if (Declaration != null)
-            {
-                sb.Append(Declaration.GetXml());
-            }
-
             foreach (var c in Children)
             {
                 sb.Append(c.GetXml());

Parsers.CommonTests/Xml/XmlDocumentTests.cs

@@ -0,0 +1,28 @@
+namespace Parsers.CommonTests.Xml
+{
+    using FluentAssertions;
+
+    using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+    using Skyline.DataMiner.CICD.Parsers.Common.Xml;
+
+    [TestClass]
+    public class XmlDocumentTests
+    {
+        [TestMethod]
+        public void XmlDocument_GetXml()
+        {
+            // Arrange
+            const string xml = @"<?xml version=""1.0"" encoding=""utf-8"" ?><abc></abc>";
+            const string expectedXml = @"<?xml version=""1.0"" encoding=""utf-8"" ?><abc />";
+
+            XmlDocument document = XmlDocument.Parse(xml);
+
+            // Act
+            var result = document.GetXml();
+
+            // Check
+            result.Should().BeEquivalentTo(expectedXml);
+        }
+    }
+}