Use JSV to serialize ObjectDictionary values ToStringDictionary

Author: mythz

src/ServiceStack.Text/TypeSerializer.cs

@@ -227,7 +227,7 @@ public static Dictionary<string, string> ToStringDictionary(this object obj)
                 var to = new Dictionary<string, string>();
                 foreach (var kvp in kvps)
                 {
-                    to[kvp.Key] = kvp.Value?.ToString();
+                    to[kvp.Key] = kvp.Value.ToJsv();
                 }
                 return to;
             }

tests/ServiceStack.Text.Tests/ConversionTests.cs

@@ -0,0 +1,29 @@
+using System.Collections.Generic;
+using NUnit.Framework;
+
+namespace ServiceStack.Text.Tests
+{
+    public class ConversionTests
+    {
+        [Test]
+        public void Converting_ObjectDictionary_ToStringDictionary_converts_collection_to_jsv()
+        {
+            var objDictionary = new Dictionary<string, object>
+            {
+                {"string", "foo,bar" },
+                {"intArray", new[] {1, 2} },
+                {"stringArray", new[] {"foo", "bar"} },
+                {"stringEscapeChars", "a, 'b" },
+                {"stringArrayEscapeChars", new[] { "a, b", "c 'd"} },
+            };
+
+            var strDictionary = objDictionary.ToStringDictionary();
+
+            Assert.That(strDictionary["string"], Is.EqualTo("foo,bar"));
+            Assert.That(strDictionary["intArray"], Is.EqualTo("[1,2]"));
+            Assert.That(strDictionary["stringArray"], Is.EqualTo("[foo,bar]"));
+            Assert.That(strDictionary["stringEscapeChars"], Is.EqualTo("a, 'b"));
+            Assert.That(strDictionary["stringArrayEscapeChars"], Is.EqualTo("[\"a, b\",c 'd]"));
+        }
+    }
+}