Fix indentation, add unit test

plist-cil.test/IssueTest.cs

@@ -159,7 +159,8 @@ namespace plistcil.test
         }
 
         /// <summary>
-        /// Makes sure that binary data is line-wrapped correctly when being serialized.
+        /// Makes sure that binary data is line-wrapped correctly when being serialized, in a scenario
+        /// where the binary data is not indented (no leading whitespace).
         /// </summary>
         [Fact]
         public static void RoundtripDataTest()
@@ -168,7 +169,21 @@ namespace plistcil.test
             var value = XmlPropertyListParser.Parse(new FileInfo(@"test-files/RoundtripBinary.plist"));
             var actual = value.ToXmlPropertyList();
 
-            Assert.Equal(expected, actual, false, true);
+            Assert.Equal(expected, actual, ignoreLineEndingDifferences: true);
+        }
+
+        /// <summary>
+        /// Makes sure that binary data is line-wrapped correctly when being serialized, in a scenario
+        /// where the binary data is indented.
+        /// </summary>
+        [Fact]
+        public static void RoundtripDataTest2()
+        {
+            var expected = File.ReadAllText(@"test-files/RoundtripBinaryIndentation.plist");
+            var value = XmlPropertyListParser.Parse(new FileInfo(@"test-files/RoundtripBinaryIndentation.plist"));
+            var actual = value.ToXmlPropertyList();
+
+            Assert.Equal(expected, actual, ignoreLineEndingDifferences: true);
         }
     }
 }

plist-cil.test/plist-cil.test.csproj

@@ -112,4 +112,10 @@
     <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Update="test-files\RoundtripBinaryIndentation.plist">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
 </Project>

plist-cil.test/test-files/RoundtripBinaryIndentation.plist

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>keyA</key>
+	<data>
+	MjAxMy0wMi0wMiAyMDoxNjo0MiBHTVQ6IGhhbmRsZV9tZXNzYWdlOiBBbmQgeW91IHdp
+	bGwga25vdyBteSBuYW1lIGlzIHRoZSBMb3JkIHdoZW4gSSBsYXkgbXkgdmVuZ2VhbmNl
+	IHVwb24gdGhlZS4=
+	</data>
+</dict>
+</plist>

plist-cil/NSData.cs

@@ -159,10 +159,9 @@ namespace Claunia.PropertyList
             string base64 = GetBase64EncodedData();
             foreach (string line in base64.Split('\n'))
             {
-                Indent(xml, level);
-
                 for (int offset = 0; offset < base64.Length; offset += DataLineLength)
                 {
+                    Indent(xml, level);
                     xml.Append(line.Substring(offset, Math.Min(DataLineLength, line.Length - offset)));
                     xml.Append(NSObject.NEWLINE);
                 }