461 lines
13 KiB
C#
461 lines
13 KiB
C#
//
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// CollectionSerialization
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//
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// Authors:
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// Martin Baulig (martin.baulig@xamarin.com)
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//
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// Copyright 2012 Xamarin Inc. (http://www.xamarin.com)
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Reflection;
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Runtime.Serialization;
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using System.ServiceModel;
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using NUnit.Framework;
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using NUnit.Framework.Constraints;
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#if !MOBILE
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using NUnit.Framework.SyntaxHelpers;
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#endif
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namespace MonoTests.System.Runtime.Serialization
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{
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[TestFixture]
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public class CollectionSerialization
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{
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[DataContract]
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class Foo
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{
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[DataMember]
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public int Hello;
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}
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class MyList<T> : List<T>, IMyList<T>
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{
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}
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interface IMyList<T> : IList
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{
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}
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[Serializable]
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class CustomList<T> : IList<T>
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{
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List<T> list;
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public CustomList (IList<T> elements)
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{
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list = new List<T> ();
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if (elements != null)
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list.AddRange (elements);
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}
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#region IList implementation
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public int IndexOf (T item)
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{
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return list.IndexOf (item);
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}
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public void Insert (int index, T item)
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{
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list.Insert (index, item);
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}
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public void RemoveAt (int index)
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{
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list.RemoveAt (index);
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}
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public T this [int index] {
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get {
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return list [index];
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}
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set {
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list [index] = value;
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}
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}
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#endregion
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#region ICollection implementation
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public void Add (T item)
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{
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list.Add (item);
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}
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public void Clear ()
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{
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list.Clear ();
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}
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public bool Contains (T item)
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{
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return list.Contains (item);
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}
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public void CopyTo (T[] array, int arrayIndex)
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{
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list.CopyTo (array, arrayIndex);
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}
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public bool Remove (T item)
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{
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return list.Remove (item);
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}
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#endregion
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#region IEnumerable implementation
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public IEnumerator<T> GetEnumerator ()
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{
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return list.GetEnumerator ();
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}
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#endregion
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#region IEnumerable implementation
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IEnumerator IEnumerable.GetEnumerator ()
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{
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return GetEnumerator ();
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}
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#endregion
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#region ICollection<T> implementation
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int ICollection<T>.Count {
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get {
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return list.Count;
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}
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}
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bool ICollection<T>.IsReadOnly {
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get {
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return ((ICollection<T>)list).IsReadOnly;
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}
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}
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#endregion
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public override int GetHashCode ()
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{
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return list.GetHashCode ();
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}
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public override bool Equals (object obj)
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{
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var custom = obj as CustomList<T>;
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if (custom == null)
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return false;
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if (list.Count != custom.list.Count)
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return false;
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for (int i = 0; i < list.Count; i++)
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if (!list [i].Equals (custom.list [i]))
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return false;
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return true;
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}
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}
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class CustomCollection<T> : CustomList<T>
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{
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public CustomCollection ()
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: base (null)
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{
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}
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public CustomCollection (IList<T> elements)
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: base (elements)
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{
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}
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}
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static object Serialize<T> (object arg)
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{
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using (var ms = new MemoryStream ()) {
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try {
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var serializer = new DataContractSerializer (typeof(T));
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serializer.WriteObject (ms, arg);
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} catch (Exception ex) {
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return ex;
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}
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return new UTF8Encoding ().GetString (ms.GetBuffer (), 0, (int)ms.Position);
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}
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}
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static T Deserialize<T> (string text)
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{
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var buffer = new UTF8Encoding ().GetBytes (text);
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using (var ms = new MemoryStream (buffer)) {
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var serializer = new DataContractSerializer (typeof(T));
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return (T)serializer.ReadObject (ms);
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}
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}
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[Test]
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public void CollectionInterfaceContract ()
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{
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var array = new object[3] { 1, 2, 3 };
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var arrayResult = (string)Serialize<object[]> (array);
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var list = new List<int> (new[] { 1, 2, 3 });
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Assert.That (Serialize<IList> (array), Is.EqualTo (arrayResult), "#1");
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Assert.That (Serialize<IList> (list), Is.EqualTo (arrayResult), "#2");
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Assert.That (Serialize<IEnumerable> (list), Is.EqualTo (arrayResult), "#3");
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Assert.That (Serialize<ICollection> (list), Is.EqualTo (arrayResult), "#4");
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var alist = new ArrayList ();
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alist.AddRange (array);
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Assert.That (Serialize<IList> (alist), Is.EqualTo (arrayResult), "#5");
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Assert.That (Deserialize<IList> (arrayResult), Is.EqualTo (list), "#6");
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Assert.That (Deserialize<IEnumerable> (arrayResult), Is.EqualTo (list), "#7");
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Assert.That (Deserialize<ICollection> (arrayResult), Is.EqualTo (list), "#8");
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}
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[Test]
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public void GenericCollectionInterfaceContract ()
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{
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var array = new[] { 1, 2, 3 };
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var arrayResult = (string)Serialize<int[]> (array);
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var list = new List<int> (array);
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var mylist = new MyList<int> ();
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mylist.AddRange (array);
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var custom = new CustomList<int> (array);
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Assert.That (Serialize<IList<int>> (list), Is.EqualTo (arrayResult), "#1");
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Assert.That (Serialize<IEnumerable<int>> (list), Is.EqualTo (arrayResult), "#2");
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Assert.That (Serialize<ICollection<int>> (list), Is.EqualTo (arrayResult), "#3");
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Assert.That (Serialize<IList<object>> (list),
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InstanceOf (typeof (InvalidCastException)), "#4");
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Assert.That (Serialize<IList<int>> (mylist), Is.EqualTo (arrayResult), "#5");
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Assert.That (Serialize<IList<int>> (list.AsReadOnly ()), Is.EqualTo (arrayResult), "#6");
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Assert.That (Serialize<IList<int>> (custom), Is.EqualTo (arrayResult), "#7");
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Assert.That (Deserialize<IList<int>> (arrayResult), Is.EqualTo (list), "#8");
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Assert.That (Deserialize<List<int>> (arrayResult), Is.EqualTo (list), "#9");
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}
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[Test]
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public void CustomCollectionInterfaceContract ()
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{
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var array = new[] { 1, 2, 3 };
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var arrayResult = Serialize<int[]> (array);
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var mylist = new MyList<int> ();
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mylist.AddRange (array);
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Assert.That (Serialize<IList<int>> (mylist), Is.EqualTo (arrayResult), "#1");
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Assert.That (Serialize<List<int>> (mylist), Is.EqualTo (arrayResult), "#2");
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Assert.That (Serialize<IMyList<int>> (mylist),
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InstanceOf (typeof (SerializationException)), "#3");
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Assert.That (Serialize<MyList<int>> (mylist), Is.EqualTo (arrayResult), "#4");
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}
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[Test]
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public void CustomCollectionTypeContract ()
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{
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var array = new[] { 1, 2, 3 };
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var arrayResult = (string)Serialize<int[]> (array);
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var custom = new CustomList<int> (array);
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var result = (string)Serialize<CustomList<int>> (custom);
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Assert.That (result.Contains ("CustomListOfint"), Is.True, "#1");
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Assert.That (Deserialize<CustomList<int>> (result), Is.EqualTo (custom), "#2");
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var ro = array.ToList ().AsReadOnly ();
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var result2 = (string)Serialize<ReadOnlyCollection<int>> (ro);
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Assert.That (result2.Contains ("ReadOnlyCollectionOfint"), Is.True, "#3");
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Assert.That (Deserialize<ReadOnlyCollection<int>> (result2), Is.EqualTo (ro), "#4");
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/*
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* CustomList<T> implements one of the collection interfaces, but does not have
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* a public parameterless constructor. It is therefor treated like a normal
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* [Serializable] type and can not be deserialized from an array.
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*
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* The same also applies to ReadOnlyCollection<T>.
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*
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*/
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try {
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Deserialize<CustomList<int>> (arrayResult);
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Assert.Fail ("#5");
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} catch (Exception ex) {
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Assert.That (ex, InstanceOf (typeof (SerializationException)), "#6");
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}
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try {
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Deserialize<ReadOnlyCollection<int>> (arrayResult);
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Assert.Fail ("#7");
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} catch (Exception ex) {
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Assert.That (ex, InstanceOf (typeof (SerializationException)), "#8");
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}
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/*
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* CustomCollection<T> does have the required public parameterless constructor,
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* so it is treated as custom collection type and serialized as array.
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*
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*/
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var collection = new CustomCollection<int> (array);
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var result3 = (string)Serialize<CustomCollection<int>> (collection);
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Assert.That (result3, Is.EqualTo (arrayResult), "#9");
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Assert.That (Deserialize<CustomCollection<int>> (result3), Is.EqualTo (collection), "#10");
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}
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[Test]
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public void ArrayContract ()
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{
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var array = new[] { 1, 2, 3 };
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var list = new List<int> (array);
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Assert.That (Serialize<int[]> (list),
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InstanceOf (typeof (InvalidCastException)), "#1");
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Assert.That (Serialize<object[]> (array),
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InstanceOf (typeof (InvalidCastException)), "#2");
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}
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[Test]
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public void ListOfArrays ()
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{
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var water = new[] { "Fish", "Mermaid" };
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var land = new[] { "Horse", "Human", "Lion" };
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var air = new[] { "Bird", "Drake" };
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var species = new[] { water, land, air };
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var serialized = (string)Serialize<string[][]> (species);
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var list = new List<string[]> (species);
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Assert.That (Serialize<IList<string[]>> (species), Is.EqualTo (serialized), "#1");
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Assert.That (Serialize<IList<string[]>> (list), Is.EqualTo (serialized), "#2");
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}
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[CollectionDataContract (Name = "MyCollection")]
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class MissingAddMethod<T> : IEnumerable<T>
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{
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#region IEnumerable implementation
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public IEnumerator<T> GetEnumerator ()
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{
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throw new InvalidOperationException ();
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}
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#endregion
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#region IEnumerable implementation
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IEnumerator IEnumerable.GetEnumerator ()
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{
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throw new InvalidOperationException ();
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}
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#endregion
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}
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[CollectionDataContract (Name = "MyCollection")]
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class MissingEnumerable<T>
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{
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public void Add (T item)
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{
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throw new NotImplementedException ();
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}
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}
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[CollectionDataContract (Name = "MyCollection")]
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class MyDataContractCollection<T> : IEnumerable<T>
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{
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List<T> list;
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public MyDataContractCollection ()
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{
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list = new List<T> ();
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}
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public MyDataContractCollection (IList<T> elements)
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{
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list = new List<T> ();
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list.AddRange (elements);
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}
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#region IEnumerable implementation
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public IEnumerator<T> GetEnumerator ()
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{
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return list.GetEnumerator ();
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}
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#endregion
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#region IEnumerable implementation
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IEnumerator IEnumerable.GetEnumerator ()
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{
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return GetEnumerator ();
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}
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#endregion
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public void Add (T item)
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{
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list.Add (item);
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}
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}
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class MyDerivedDataContract<T> : MyDataContractCollection<T>
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{
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}
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[Test]
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public void TestCollectionDataContract ()
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{
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Assert.That (Serialize<MissingAddMethod<int>> (new MissingAddMethod<int> ()),
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InstanceOf (typeof (InvalidDataContractException)), "#1");
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Assert.That (Serialize<MissingEnumerable<int>> (new MissingEnumerable<int> ()),
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InstanceOf (typeof (InvalidDataContractException)), "#2");
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var array = new[] { 1, 2, 3 };
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var arrayResult = (string)Serialize<int[]> (array);
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var collection = new MyDataContractCollection<int> (array);
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var result = Serialize<MyDataContractCollection<int>> (collection);
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Assert.That (result, InstanceOf (typeof(string)), "#3");
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Assert.That (Serialize<MyDataContractCollection<int>> (array),
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InstanceOf (typeof (SerializationException)), "#4");
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var derived = new MyDerivedDataContract<int> ();
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Assert.That (Serialize<MyDataContractCollection<int>> (derived),
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InstanceOf (typeof (SerializationException)), "#5");
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try {
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Deserialize<MyDataContractCollection<int>> (arrayResult);
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Assert.Fail ("#6");
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} catch (Exception ex) {
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Assert.That (ex, InstanceOf (typeof(SerializationException)), "#7");
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}
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var deserialized = Deserialize<MyDataContractCollection<int>> ((string)result);
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Assert.That (deserialized, InstanceOf (typeof (MyDataContractCollection<int>)), "#8");
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}
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[Test]
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public void Test ()
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{
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var derived = new MyDerivedDataContract<int> ();
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Assert.That (Serialize<MyDataContractCollection<int>> (derived),
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InstanceOf (typeof (SerializationException)), "#5");
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}
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public static InstanceOfTypeConstraint InstanceOf (Type expectedType)
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{
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return new InstanceOfTypeConstraint (expectedType);
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}
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}
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}
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