mono/mcs/class/System.ServiceModel.Web/Test/System.Runtime.Serialization.Json/DataContractJsonSerializerTest.cs

//
// DataContractJsonSerializerTest.cs
//
// Author:
//	Atsushi Enomoto <[email protected]>
//	Ankit Jain <[email protected]>
//
// Copyright (C) 2005-2007 Novell, Inc.  http://www.novell.com

//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

//
// This test code contains tests for DataContractJsonSerializer, which is
// imported from DataContractSerializerTest.cs.
//

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Net;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Xml;
using NUnit.Framework;

namespace MonoTests.System.Runtime.Serialization.Json
{
	[TestFixture]
	public class DataContractJsonSerializerTest
	{
		static readonly XmlWriterSettings settings;

		static DataContractJsonSerializerTest ()
		{
			settings = new XmlWriterSettings ();
			settings.OmitXmlDeclaration = true;
		}

		[DataContract]
		class Sample1
		{
			[DataMember]
			public string Member1;
		}

		[Test]
		[ExpectedException (typeof (ArgumentNullException))]
		public void ConstructorTypeNull ()
		{
			new DataContractJsonSerializer (null);
		}

		[Test]
		public void ConstructorKnownTypesNull ()
		{
			// null knownTypes is allowed.
			new DataContractJsonSerializer (typeof (Sample1), (IEnumerable<Type>) null);
			new DataContractJsonSerializer (typeof (Sample1), "Foo", null);
		}

		[Test]
		[ExpectedException (typeof (ArgumentNullException))]
		public void ConstructorNameNull ()
		{
			new DataContractJsonSerializer (typeof (Sample1), (string) null);
		}

		[Test]
		[ExpectedException (typeof (ArgumentOutOfRangeException))]
		public void ConstructorNegativeMaxObjects ()
		{
			new DataContractJsonSerializer (typeof (Sample1), "Sample1",
				null, -1, false, null, false);
		}

		[Test]
		public void ConstructorMisc ()
		{
			new DataContractJsonSerializer (typeof (GlobalSample1));
		}

		[Test]
		public void WriteObjectContent ()
		{
			StringWriter sw = new StringWriter ();
			using (XmlWriter xw = XmlWriter.Create (sw, settings)) {
				DataContractJsonSerializer ser =
					new DataContractJsonSerializer (typeof (string));
				xw.WriteStartElement ("my-element");
				ser.WriteObjectContent (xw, "TEST STRING");
				xw.WriteEndElement ();
			}
			Assert.AreEqual ("<my-element>TEST STRING</my-element>",
				sw.ToString ());
		}

		// int

		[Test]
		public void SerializeIntXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeInt (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""number"">1</root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeIntJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeInt (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"1",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeInt (XmlWriter writer)
		{
			DataContractJsonSerializer ser =
				new DataContractJsonSerializer (typeof (int));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, 1);
			}
		}

		// int, with rootName

		[Test]
		public void SerializeIntXmlWithRootName ()
		{
			StringWriter sw = new StringWriter ();
			SerializeIntWithRootName (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<myroot type=""number"">1</myroot>",
				sw.ToString ());
		}

		[Test]
		// since JsonWriter supports only "root" as the root name, using
		// XmlWriter from JsonReaderWriterFactory will always fail with
		// an explicit rootName.
		[ExpectedException (typeof (SerializationException))]
		public void SerializeIntJsonWithRootName ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeIntWithRootName (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"1",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeIntWithRootName (XmlWriter writer)
		{
			DataContractJsonSerializer ser =
				new DataContractJsonSerializer (typeof (int), "myroot");
			using (XmlWriter w = writer) {
				ser.WriteObject (w, 1);
			}
		}

		// pass typeof(DCEmpty), serialize int

		[Test]
		public void SerializeIntForDCEmptyXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeIntForDCEmpty (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""number"">1</root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeIntForDCEmptyJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeIntForDCEmpty (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"1",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeIntForDCEmpty (XmlWriter writer)
		{
			DataContractJsonSerializer ser =
				new DataContractJsonSerializer (typeof (DCEmpty));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, 1);
			}
		}

		// DCEmpty

		[Test]
		public void SerializeEmptyClassXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeEmptyClass (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""object"" />",
				sw.ToString ());
		}

		[Test]
		public void SerializeEmptyClassJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeEmptyClass (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"{}",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeEmptyClass (XmlWriter writer)
		{
			DataContractJsonSerializer ser =
				new DataContractJsonSerializer (typeof (DCEmpty));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, new DCEmpty ());
			}
		}

		// string (primitive)

		[Test]
		public void SerializePrimitiveStringXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializePrimitiveString (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				"<root>TEST</root>",
				sw.ToString ());
		}

		[Test]
		public void SerializePrimitiveStringJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializePrimitiveString (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				@"""TEST""",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializePrimitiveString (XmlWriter writer)
		{
			XmlObjectSerializer ser =
				new DataContractJsonSerializer (typeof (string));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, "TEST");
			}
		}

		// QName (primitive but ...)

		[Test]
		public void SerializePrimitiveQNameXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializePrimitiveQName (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				"<root>foo:urn:foo</root>",
				sw.ToString ());
		}

		[Test]
		public void SerializePrimitiveQNameJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializePrimitiveQName (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				@"""foo:urn:foo""",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializePrimitiveQName (XmlWriter writer)
		{
			XmlObjectSerializer ser =
				new DataContractJsonSerializer (typeof (XmlQualifiedName));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, new XmlQualifiedName ("foo", "urn:foo"));
			}
		}

		// DBNull (primitive)

		[Test]
		public void SerializeDBNullXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeDBNull (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""object"" />",
				sw.ToString ());
		}

		[Test]
		public void SerializeDBNullJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeDBNull (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"{}",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeDBNull (XmlWriter writer)
		{
			DataContractJsonSerializer ser =
				new DataContractJsonSerializer (typeof (DBNull));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, DBNull.Value);
			}
		}

		// DCSimple1

		[Test]
		public void SerializeSimpleClass1Xml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeSimpleClass1 (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""object""><Foo>TEST</Foo></root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeSimpleClass1Json ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeSimpleClass1 (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				@"{""Foo"":""TEST""}",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeSimpleClass1 (XmlWriter writer)
		{
			DataContractJsonSerializer ser =
				new DataContractJsonSerializer (typeof (DCSimple1));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, new DCSimple1 ());
			}
		}

		// NonDC

		[Test]
		// NonDC is not a DataContract type.
		public void SerializeNonDCOnlyCtor ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (NonDC));
		}

		[Test]
		[ExpectedException (typeof (InvalidDataContractException))]
		// NonDC is not a DataContract type.
		public void SerializeNonDC ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (NonDC));
			using (XmlWriter w = XmlWriter.Create (TextWriter.Null, settings)) {
				ser.WriteObject (w, new NonDC ());
			}
		}

		// DCHasNonDC

		[Test]
		[ExpectedException (typeof (InvalidDataContractException))]
		// DCHasNonDC itself is a DataContract type whose field is
		// marked as DataMember but its type is not DataContract.
		public void SerializeDCHasNonDC ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (DCHasNonDC));
			using (XmlWriter w = XmlWriter.Create (TextWriter.Null, settings)) {
				ser.WriteObject (w, new DCHasNonDC ());
			}
		}

		// DCHasSerializable

		[Test]
		public void SerializeSimpleSerializable1Xml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeSimpleSerializable1 (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""object""><Ser type=""object""><Doh>doh!</Doh></Ser></root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeSimpleSerializable1Json ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeSimpleSerializable1 (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				@"{""Ser"":{""Doh"":""doh!""}}",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		// DCHasSerializable itself is DataContract and has a field
		// whose type is not contract but serializable.
		void SerializeSimpleSerializable1 (XmlWriter writer)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (DCHasSerializable));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, new DCHasSerializable ());
			}
		}

		[Test]
		public void SerializeDCWithNameXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeDCWithName (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""object""><FooMember>value</FooMember></root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeDCWithNameJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeDCWithName (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				@"{""FooMember"":""value""}",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeDCWithName (XmlWriter writer)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (DCWithName));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, new DCWithName ());
			}
		}

		[Test]
		public void SerializeDCWithEmptyName1 ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (DCWithEmptyName));
			StringWriter sw = new StringWriter ();
			DCWithEmptyName dc = new DCWithEmptyName ();
			using (XmlWriter w = XmlWriter.Create (sw, settings)) {
				try {
					ser.WriteObject (w, dc);
				} catch (InvalidDataContractException) {
					return;
				}
			}
			Assert.Fail ("Expected InvalidDataContractException");
		}

		[Test]
		public void SerializeDCWithEmptyName2 ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (DCWithName));
			StringWriter sw = new StringWriter ();

			/* DataContractAttribute.Name == "", not valid */
			DCWithEmptyName dc = new DCWithEmptyName ();
			using (XmlWriter w = XmlWriter.Create (sw, settings)) {
				try {
					ser.WriteObject (w, dc);
				} catch (InvalidDataContractException) {
					return;
				}
			}
			Assert.Fail ("Expected InvalidDataContractException");
		}

		[Test]
		[Category("NotWorking")]
		public void SerializeDCWithNullName ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (DCWithNullName));
			StringWriter sw = new StringWriter ();
			using (XmlWriter w = XmlWriter.Create (sw, settings)) {
				try {
					/* DataContractAttribute.Name == "", not valid */
					ser.WriteObject (w, new DCWithNullName ());
				} catch (InvalidDataContractException) {
					return;
				}
			}
			Assert.Fail ("Expected InvalidDataContractException");
		}

		[Test]
		public void SerializeDCWithEmptyNamespace1 ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (DCWithEmptyNamespace));
			StringWriter sw = new StringWriter ();
			using (XmlWriter w = XmlWriter.Create (sw, settings)) {
				ser.WriteObject (w, new DCWithEmptyNamespace ());
			}
		}

		[Test]
		public void SerializeWrappedClassXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeWrappedClass (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""object"" />",
				sw.ToString ());
		}

		[Test]
		public void SerializeWrappedClassJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeWrappedClass (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"{}",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeWrappedClass (XmlWriter writer)
		{
			DataContractJsonSerializer ser =
				new DataContractJsonSerializer (typeof (Wrapper.DCWrapped));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, new Wrapper.DCWrapped ());
			}
		}

		// CollectionContainer : Items must have a setter.
		[Test]
		[ExpectedException (typeof (InvalidDataContractException))]
		public void SerializeReadOnlyCollectionMember ()
		{
			DataContractJsonSerializer ser =
				new DataContractJsonSerializer (typeof (CollectionContainer));
			StringWriter sw = new StringWriter ();
			using (XmlWriter w = XmlWriter.Create (sw, settings)) {
				ser.WriteObject (w, null);
			}
		}

		// DataCollectionContainer : Items must have a setter.
		[Test]
		[ExpectedException (typeof (InvalidDataContractException))]
		public void SerializeReadOnlyDataCollectionMember ()
		{
			DataContractJsonSerializer ser =
				new DataContractJsonSerializer (typeof (DataCollectionContainer));
			StringWriter sw = new StringWriter ();
			using (XmlWriter w = XmlWriter.Create (sw, settings)) {
				ser.WriteObject (w, null);
			}
		}

		[Test]
		public void SerializeGuidXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeGuid (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root>00000000-0000-0000-0000-000000000000</root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeGuidJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeGuid (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				@"""00000000-0000-0000-0000-000000000000""",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeGuid (XmlWriter writer)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (Guid));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, Guid.Empty);
			}
		}

		[Test]
		public void SerializeEnumXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeEnum (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""number"">0</root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeEnumJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeEnum (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"0",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeEnum (XmlWriter writer)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (Colors));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, new Colors ());
			}
		}

		[Test]
		public void SerializeEnum2Xml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeEnum2 (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""number"">0</root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeEnum2Json ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeEnum2 (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"0",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeEnum2 (XmlWriter writer)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (Colors));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, 0);
			}
		}

		[Test] // so, DataContract does not affect here.
		public void SerializeEnumWithDCXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeEnumWithDC (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""number"">0</root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeEnumWithDCJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeEnumWithDC (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"0",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeEnumWithDC (XmlWriter writer)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (ColorsWithDC));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, new ColorsWithDC ());
			}
		}

		[Test]
		public void SerializeEnumWithNoDCXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeEnumWithNoDC (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""number"">0</root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeEnumWithNoDCJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeEnumWithNoDC (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"0",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeEnumWithNoDC (XmlWriter writer)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (ColorsEnumMemberNoDC));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, new ColorsEnumMemberNoDC ());
			}
		}

		[Test]
		public void SerializeEnumWithDC2Xml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeEnumWithDC2 (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""number"">3</root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeEnumWithDC2Json ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeEnumWithDC2 (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				"3",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeEnumWithDC2 (XmlWriter writer)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (ColorsWithDC));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, 3);
			}
		}

/*
		[Test]
		[ExpectedException (typeof (SerializationException))]
		public void SerializeEnumWithDCInvalid ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (ColorsWithDC));
			StringWriter sw = new StringWriter ();
			ColorsWithDC cdc = ColorsWithDC.Blue;
			using (XmlWriter w = XmlWriter.Create (sw, settings)) {
				ser.WriteObject (w, cdc);
			}
		}
*/

		[Test]
		public void SerializeDCWithEnumXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializeDCWithEnum (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""object""><_colors type=""number"">0</_colors></root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeDCWithEnumJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializeDCWithEnum (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				@"{""_colors"":0}",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializeDCWithEnum (XmlWriter writer)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (DCWithEnum));
			using (XmlWriter w = writer) {
				ser.WriteObject (w, new DCWithEnum ());
			}
		}

		[Test]
		public void SerializerDCArrayXml ()
		{
			StringWriter sw = new StringWriter ();
			SerializerDCArray (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""array""><item type=""object""><_colors type=""number"">0</_colors></item><item type=""object""><_colors type=""number"">1</_colors></item></root>",
				sw.ToString ());
		}

		[Test]
		public void SerializerDCArrayJson ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializerDCArray (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				@"[{""_colors"":0},{""_colors"":1}]",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializerDCArray (XmlWriter writer)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (DCWithEnum []));
			DCWithEnum [] arr = new DCWithEnum [2];
			arr [0] = new DCWithEnum (); arr [0].colors = Colors.Red;
			arr [1] = new DCWithEnum (); arr [1].colors = Colors.Green;
			using (XmlWriter w = writer) {
				ser.WriteObject (w, arr);
			}
		}

		[Test]
		public void SerializerDCArray2Xml ()
		{
			StringWriter sw = new StringWriter ();
			SerializerDCArray2 (XmlWriter.Create (sw, settings));
			Assert.AreEqual (
				@"<root type=""array""><item __type=""DCWithEnum:#MonoTests.System.Runtime.Serialization.Json"" type=""object""><_colors type=""number"">0</_colors></item><item __type=""DCSimple1:#MonoTests.System.Runtime.Serialization.Json"" type=""object""><Foo>hello</Foo></item></root>",
				sw.ToString ());
		}

		[Test]
		public void SerializerDCArray2Json ()
		{
			MemoryStream ms = new MemoryStream ();
			SerializerDCArray2 (JsonReaderWriterFactory.CreateJsonWriter (ms));
			Assert.AreEqual (
				@"[{""__type"":""DCWithEnum:#MonoTests.System.Runtime.Serialization.Json"",""_colors"":0},{""__type"":""DCSimple1:#MonoTests.System.Runtime.Serialization.Json"",""Foo"":""hello""}]",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		void SerializerDCArray2 (XmlWriter writer)
		{
			List<Type> known = new List<Type> ();
			known.Add (typeof (DCWithEnum));
			known.Add (typeof (DCSimple1));
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (object []), known);
			object [] arr = new object [2];
			arr [0] = new DCWithEnum (); ((DCWithEnum)arr [0]).colors = Colors.Red;
			arr [1] = new DCSimple1 (); ((DCSimple1) arr [1]).Foo = "hello";

			using (XmlWriter w = writer) {
				ser.WriteObject (w, arr);
			}
		}

		[Test]
		public void SerializerDCArray3Xml ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (int []));
			StringWriter sw = new StringWriter ();
			int [] arr = new int [2];
			arr [0] = 1; arr [1] = 2;

			using (XmlWriter w = XmlWriter.Create (sw, settings)) {
				ser.WriteObject (w, arr);
			}

			Assert.AreEqual (
				@"<root type=""array""><item type=""number"">1</item><item type=""number"">2</item></root>",
				sw.ToString ());
		}

		[Test]
		public void SerializerDCArray3Json ()
		{
			MemoryStream ms = new MemoryStream ();
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (int []));
			int [] arr = new int [2];
			arr [0] = 1; arr [1] = 2;

			using (XmlWriter w = JsonReaderWriterFactory.CreateJsonWriter (ms)) {
				ser.WriteObject (w, arr);
			}

			Assert.AreEqual (
				@"[1,2]",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		[Test]
		// ... so, non-JSON XmlWriter is still accepted.
		public void SerializeNonDCArrayXml ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (SerializeNonDCArrayType));
			StringWriter sw = new StringWriter ();
			using (XmlWriter xw = XmlWriter.Create (sw, settings)) {
				ser.WriteObject (xw, new SerializeNonDCArrayType ());
			}
			Assert.AreEqual (@"<root type=""object""><IPAddresses type=""array"" /></root>",
				sw.ToString ());
		}

		[Test]
		public void SerializeNonDCArrayJson ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (SerializeNonDCArrayType));
			MemoryStream ms = new MemoryStream ();
			using (XmlWriter xw = JsonReaderWriterFactory.CreateJsonWriter (ms)) {
				ser.WriteObject (xw, new SerializeNonDCArrayType ());
			}
			Assert.AreEqual (@"{""IPAddresses"":[]}",
				Encoding.UTF8.GetString (ms.ToArray ()));
		}

		[Test]
		public void SerializeNonDCArrayItems ()
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (typeof (SerializeNonDCArrayType));
			StringWriter sw = new StringWriter ();
			using (XmlWriter xw = XmlWriter.Create (sw, settings)) {
				SerializeNonDCArrayType obj = new SerializeNonDCArrayType ();
				obj.IPAddresses = new IPAddress [] {new IPAddress (new byte [] {1, 2, 3, 4})};
				ser.WriteObject (xw, obj);
			}

			XmlDocument doc = new XmlDocument ();
			doc.LoadXml (sw.ToString ());
			XmlNamespaceManager nsmgr = new XmlNamespaceManager (doc.NameTable);
			nsmgr.AddNamespace ("s", "http://schemas.datacontract.org/2004/07/MonoTests.System.Runtime.Serialization");
			nsmgr.AddNamespace ("n", "http://schemas.datacontract.org/2004/07/System.Net");
			nsmgr.AddNamespace ("a", "http://schemas.microsoft.com/2003/10/Serialization/Arrays");

			Assert.AreEqual (1, doc.SelectNodes ("/root/IPAddresses/item", nsmgr).Count, "#1");
			Assert.AreEqual ("67305985", doc.SelectSingleNode ("/root/IPAddresses/item/m_Address", nsmgr).InnerText, "#2");
			XmlElement el = doc.SelectSingleNode ("/root/IPAddresses/item/m_Numbers", nsmgr) as XmlElement;
			Assert.IsNotNull (el, "#3");
			Assert.AreEqual (8, el.SelectNodes ("item", nsmgr).Count, "#4");
		}

		[Test]
		public void MaxItemsInObjectGraph1 ()
		{
			// object count == maximum
			DataContractJsonSerializer s = new DataContractJsonSerializer (typeof (DCEmpty), null, 1, false, null, false);
			s.WriteObject (XmlWriter.Create (TextWriter.Null), new DCEmpty ());
		}

		[Test]
		[ExpectedException (typeof (SerializationException))]
		public void MaxItemsInObjectGraph2 ()
		{
			// object count > maximum
			DataContractJsonSerializer s = new DataContractJsonSerializer (typeof (DCSimple1), null, 1, false, null, false);
			s.WriteObject (XmlWriter.Create (TextWriter.Null), new DCSimple1 ());
		}

		[Test]
		public void DeserializeString ()
		{
			Assert.AreEqual ("ABC", Deserialize ("\"ABC\"", typeof (string)));
		}

		[Test]
		public void DeserializeInt ()
		{
			Assert.AreEqual (5, Deserialize ("5", typeof (int)));
		}

		[Test]
		public void DeserializeArray ()
		{
			int [] ret = (int []) Deserialize ("[5,6,7]", typeof (int []));
			Assert.AreEqual (5, ret [0], "#1");
			Assert.AreEqual (6, ret [1], "#2");
			Assert.AreEqual (7, ret [2], "#3");
		}

		[Test]
		public void DeserializeArrayUntyped ()
		{
			object [] ret = (object []) Deserialize ("[5,6,7]", typeof (object []));
			Assert.AreEqual (5, ret [0], "#1");
			Assert.AreEqual (6, ret [1], "#2");
			Assert.AreEqual (7, ret [2], "#3");
		}

		[Test]
		public void DeserializeMixedArray ()
		{
			object [] ret = (object []) Deserialize ("[5,\"6\",false]", typeof (object []));
			Assert.AreEqual (5, ret [0], "#1");
			Assert.AreEqual ("6", ret [1], "#2");
			Assert.AreEqual (false, ret [2], "#3");
		}

		[Test]
		[ExpectedException (typeof (SerializationException))]
		public void DeserializeEmptyAsString ()
		{
			// it somehow expects "root" which should have been already consumed.
			Deserialize ("", typeof (string));
		}

		[Test]
		[ExpectedException (typeof (SerializationException))]
		public void DeserializeEmptyAsInt ()
		{
			// it somehow expects "root" which should have been already consumed.
			Deserialize ("", typeof (int));
		}

		[Test]
		[ExpectedException (typeof (SerializationException))]
		public void DeserializeEmptyAsDBNull ()
		{
			// it somehow expects "root" which should have been already consumed.
			Deserialize ("", typeof (DBNull));
		}

		[Test]
		public void DeserializeEmptyObjectAsString ()
		{
			// looks like it is converted to ""
			Assert.AreEqual (String.Empty, Deserialize ("{}", typeof (string)));
		}

		[Test]
		[ExpectedException (typeof (SerializationException))]
		public void DeserializeEmptyObjectAsInt ()
		{
			Deserialize ("{}", typeof (int));
		}

		[Test]
		public void DeserializeEmptyObjectAsDBNull ()
		{
			Assert.AreEqual (DBNull.Value, Deserialize ("{}", typeof (DBNull)));
		}

		[Test]
		[ExpectedException (typeof (SerializationException))]
		public void DeserializeEnumByName ()
		{
			// enum is parsed into long
			Deserialize (@"""Red""", typeof (Colors));
		}

		[Test]
		public void DeserializeEnum2 ()
		{
			object o = Deserialize ("0", typeof (Colors));

			Assert.AreEqual (typeof (Colors), o.GetType (), "#de3");
			Colors c = (Colors) o;
			Assert.AreEqual (Colors.Red, c, "#de4");
		}
		
		[Test]
		[ExpectedException (typeof (SerializationException))]
		public void DeserializeEnumInvalid ()
		{
			Deserialize ("", typeof (Colors));
		}

		[Test]
		[ExpectedException (typeof (SerializationException))]
		[Category ("NotDotNet")] // 0.0 is an invalid Colors value.
		public void DeserializeEnumInvalid3 ()
		{
			//"0.0" instead of "0"
			Deserialize (
				"0.0",
				typeof (Colors));
		}

		[Test]
		public void DeserializeEnumWithDC ()
		{
			object o = Deserialize ("0", typeof (ColorsWithDC));
			
			Assert.AreEqual (typeof (ColorsWithDC), o.GetType (), "#de5");
			ColorsWithDC cdc = (ColorsWithDC) o;
			Assert.AreEqual (ColorsWithDC.Red, o, "#de6");
		}

		[Test]
		[ExpectedException (typeof (SerializationException))]
		[Category ("NotDotNet")] // 4 is an invalid Colors value.
		[Category ("NotWorking")]
		public void DeserializeEnumWithDCInvalid ()
		{
			Deserialize (
				"4",
				typeof (ColorsWithDC));
		}

		[Test]
		public void DeserializeDCWithEnum ()
		{
			object o = Deserialize (
				"{\"_colors\":0}",
				typeof (DCWithEnum));

			Assert.AreEqual (typeof (DCWithEnum), o.GetType (), "#de7");
			DCWithEnum dc = (DCWithEnum) o;
			Assert.AreEqual (Colors.Red, dc.colors, "#de8");
		}

		[Test]
		public void ReadObjectVerifyObjectNameFalse ()
		{
			string xml = @"<any><Member1>bar</Member1></any>";
			object o = new DataContractJsonSerializer (typeof (VerifyObjectNameTestData))
				.ReadObject (XmlReader.Create (new StringReader (xml)), false);
			Assert.IsTrue (o is VerifyObjectNameTestData, "#1");

			string xml2 = @"<any><x:Member1 xmlns:x=""http://schemas.datacontract.org/2004/07/MonoTests.System.Runtime.Serialization"">bar</x:Member1></any>";
			o = new DataContractJsonSerializer (typeof (VerifyObjectNameTestData))
				.ReadObject (XmlReader.Create (new StringReader (xml2)), false);
			Assert.IsTrue (o is VerifyObjectNameTestData, "#2");
		}

		[Test]
		[ExpectedException (typeof (SerializationException))]
		public void ReadObjectVerifyObjectNameTrue ()
		{
			string xml = @"<any><Member1>bar</Member1></any>";
			new DataContractJsonSerializer (typeof (VerifyObjectNameTestData))
				.ReadObject (XmlReader.Create (new StringReader (xml)), true);
		}

		[Test] // member name is out of scope
		public void ReadObjectVerifyObjectNameTrue2 ()
		{
			string xml = @"<root><Member2>bar</Member2></root>";
			new DataContractJsonSerializer (typeof (VerifyObjectNameTestData))
				.ReadObject (XmlReader.Create (new StringReader (xml)), true);
		}

		[Test]
		public void ReadTypedObjectJson ()
		{
			object o = Deserialize (@"{""__type"":""DCWithEnum:#MonoTests.System.Runtime.Serialization.Json"",""_colors"":0}", typeof (DCWithEnum));
			Assert.AreEqual (typeof (DCWithEnum), o.GetType ());
		}

		[Test]
		public void ReadObjectDCArrayJson ()
		{
			object o = Deserialize (@"[{""__type"":""DCWithEnum:#MonoTests.System.Runtime.Serialization.Json"",""_colors"":0}]",
				typeof (object []), typeof (DCWithEnum));
			Assert.AreEqual (typeof (object []), o.GetType (), "#1");
			object [] arr = (object []) o;
			Assert.AreEqual (typeof (DCWithEnum), arr [0].GetType (), "#2");
		}

		[Test]
		public void ReadObjectDCArray2Json ()
		{
			object o = Deserialize (@"[{""__type"":""DCWithEnum:#MonoTests.System.Runtime.Serialization.Json"",""_colors"":0},{""__type"":""DCSimple1:#MonoTests.System.Runtime.Serialization.Json"",""Foo"":""hello""}]",
				typeof (object []), typeof (DCWithEnum), typeof (DCSimple1));
			Assert.AreEqual (typeof (object []), o.GetType (), "#1");
			object [] arr = (object []) o;
			Assert.AreEqual (typeof (DCWithEnum), arr [0].GetType (), "#2");
			Assert.AreEqual (typeof (DCSimple1), arr [1].GetType (), "#3");
		}

		private object Deserialize (string xml, Type type, params Type [] knownTypes)
		{
			DataContractJsonSerializer ser = new DataContractJsonSerializer (type, knownTypes);
			XmlReader xr = JsonReaderWriterFactory.CreateJsonReader (Encoding.UTF8.GetBytes (xml), new XmlDictionaryReaderQuotas ());
			return ser.ReadObject (xr);
		}

		[Test]
		public void IsStartObject ()
		{
			DataContractJsonSerializer s = new DataContractJsonSerializer (typeof (DCSimple1));
			Assert.IsTrue (s.IsStartObject (XmlReader.Create (new StringReader ("<root></root>"))), "#1");
			Assert.IsFalse (s.IsStartObject (XmlReader.Create (new StringReader ("<dummy></dummy>"))), "#2");
			Assert.IsFalse (s.IsStartObject (XmlReader.Create (new StringReader ("<Foo></Foo>"))), "#3");
			Assert.IsFalse (s.IsStartObject (XmlReader.Create (new StringReader ("<root xmlns='urn:foo'></root>"))), "#4");
		}
 	}
 
	public enum Colors {
		Red, Green, Blue
	}

	[DataContract (Name = "_ColorsWithDC")]
	public enum ColorsWithDC {

		[EnumMember (Value = "_Red")]
		Red, 
		[EnumMember]
		Green, 
		Blue
	}


	public enum ColorsEnumMemberNoDC {
		[EnumMember (Value = "_Red")]
		Red, 
		[EnumMember]
		Green, 
		Blue
	}

 	[DataContract]
	public class DCWithEnum {
		[DataMember (Name = "_colors")]
		public Colors colors;
	}

	[DataContract]
	public class DCEmpty
	{
		// serializer doesn't touch it.
		public string Foo = "TEST";
	}

	[DataContract]
	public class DCSimple1
	{
		[DataMember]
		public string Foo = "TEST";
	}

	[DataContract]
	public class DCHasNonDC
	{
		[DataMember]
		public NonDC Hoge= new NonDC ();
	}

	public class NonDC
	{
		public string Whee = "whee!";
	}

	[DataContract]
	public class DCHasSerializable
	{
		[DataMember]
		public SimpleSer1 Ser = new SimpleSer1 ();
	}

	[DataContract (Name = "Foo")]
	public class DCWithName
	{
		[DataMember (Name = "FooMember")]
		public string DMWithName = "value";
	}

	[DataContract (Name = "")]
	public class DCWithEmptyName
	{
	}

	[DataContract (Name = null)]
	public class DCWithNullName
	{
	}

	[DataContract (Namespace = "")]
	public class DCWithEmptyNamespace
	{
	}

	[Serializable]
	public class SimpleSer1
	{
		public string Doh = "doh!";
	}

	public class Wrapper
	{
		[DataContract]
		public class DCWrapped
		{
		}
	}

	[DataContract]
	public class CollectionContainer
	{
		Collection<string> items = new Collection<string> ();

		[DataMember]
		public Collection<string> Items {
			get { return items; }
		}
	}

	[CollectionDataContract]
	public class DataCollection<T> : Collection<T>
	{
	}

	[DataContract]
	public class DataCollectionContainer
	{
		DataCollection<string> items = new DataCollection<string> ();

		[DataMember]
		public DataCollection<string> Items {
			get { return items; }
		}
	}

	[DataContract]
	class SerializeNonDCArrayType
	{
		[DataMember]
		public IPAddress [] IPAddresses = new IPAddress [0];
	}

	[DataContract]
	public class VerifyObjectNameTestData
	{
		[DataMember]
		string Member1 = "foo";
	}
}

[DataContract]
class GlobalSample1
{
}