877 lines
23 KiB
C#
877 lines
23 KiB
C#
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#region License
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// Copyright (c) 2007 James Newton-King
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// 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
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using Newtonsoft.Json.Linq;
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using Newtonsoft.Json.Tests.TestObjects;
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#if !NETFX_CORE
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using NUnit.Framework;
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#else
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using Microsoft.VisualStudio.TestTools.UnitTesting;
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using TestFixture = Microsoft.VisualStudio.TestTools.UnitTesting.TestClassAttribute;
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using Test = Microsoft.VisualStudio.TestTools.UnitTesting.TestMethodAttribute;
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#endif
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namespace Newtonsoft.Json.Tests.Serialization
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{
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[TestFixture]
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public class PreserveReferencesHandlingTests : TestFixtureBase
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{
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[Test]
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public void SerializeDictionarysWithPreserveObjectReferences()
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{
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CircularDictionary circularDictionary = new CircularDictionary();
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circularDictionary.Add("other", new CircularDictionary { { "blah", null } });
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circularDictionary.Add("self", circularDictionary);
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string json = JsonConvert.SerializeObject(circularDictionary, Formatting.Indented,
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new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.All });
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Assert.AreEqual(@"{
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""$id"": ""1"",
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""other"": {
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""$id"": ""2"",
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""blah"": null
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},
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""self"": {
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""$ref"": ""1""
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}
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}", json);
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}
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[Test]
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public void DeserializeDictionarysWithPreserveObjectReferences()
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{
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string json = @"{
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""$id"": ""1"",
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""other"": {
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""$id"": ""2"",
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""blah"": null
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},
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""self"": {
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""$ref"": ""1""
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}
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}";
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CircularDictionary circularDictionary = JsonConvert.DeserializeObject<CircularDictionary>(json,
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new JsonSerializerSettings
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{
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PreserveReferencesHandling = PreserveReferencesHandling.All
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});
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Assert.AreEqual(2, circularDictionary.Count);
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Assert.AreEqual(1, circularDictionary["other"].Count);
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Assert.AreEqual(circularDictionary, circularDictionary["self"]);
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}
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public class CircularList : List<CircularList>
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{
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}
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[Test]
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[ExpectedException(typeof(JsonSerializationException))]
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public void SerializeCircularListsError()
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{
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CircularList circularList = new CircularList();
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circularList.Add(null);
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circularList.Add(new CircularList { null });
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circularList.Add(new CircularList { new CircularList { circularList } });
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JsonConvert.SerializeObject(circularList, Formatting.Indented);
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}
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[Test]
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public void SerializeCircularListsIgnore()
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{
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CircularList circularList = new CircularList();
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circularList.Add(null);
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circularList.Add(new CircularList { null });
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circularList.Add(new CircularList { new CircularList { circularList } });
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string json = JsonConvert.SerializeObject(circularList,
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Formatting.Indented,
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new JsonSerializerSettings { ReferenceLoopHandling = ReferenceLoopHandling.Ignore });
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Assert.AreEqual(@"[
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null,
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[
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null
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],
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[
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[]
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]
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]", json);
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}
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[Test]
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public void SerializeListsWithPreserveObjectReferences()
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{
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CircularList circularList = new CircularList();
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circularList.Add(null);
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circularList.Add(new CircularList { null });
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circularList.Add(new CircularList { new CircularList { circularList } });
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string json = JsonConvert.SerializeObject(circularList, Formatting.Indented,
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new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.All });
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Assert.AreEqual(@"{
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""$id"": ""1"",
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""$values"": [
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null,
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{
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""$id"": ""2"",
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""$values"": [
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null
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]
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},
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{
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""$id"": ""3"",
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""$values"": [
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{
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""$id"": ""4"",
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""$values"": [
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{
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""$ref"": ""1""
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}
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]
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}
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]
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}
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]
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}", json);
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}
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[Test]
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public void DeserializeListsWithPreserveObjectReferences()
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{
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string json = @"{
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""$id"": ""1"",
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""$values"": [
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null,
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{
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""$id"": ""2"",
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""$values"": [
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null
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]
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},
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{
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""$id"": ""3"",
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""$values"": [
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{
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""$id"": ""4"",
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""$values"": [
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{
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""$ref"": ""1""
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}
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]
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}
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]
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}
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]
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}";
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CircularList circularList = JsonConvert.DeserializeObject<CircularList>(json,
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new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.All });
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Assert.AreEqual(3, circularList.Count);
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Assert.AreEqual(null, circularList[0]);
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Assert.AreEqual(1, circularList[1].Count);
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Assert.AreEqual(1, circularList[2].Count);
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Assert.AreEqual(1, circularList[2][0].Count);
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Assert.IsTrue(ReferenceEquals(circularList, circularList[2][0][0]));
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}
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[Test]
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[ExpectedException(typeof(JsonSerializationException)
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#if !NETFX_CORE
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, ExpectedMessage = @"Cannot preserve reference to array or readonly list: System.String[][]. Line 3, position 15."
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#endif
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)]
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public void DeserializeArraysWithPreserveObjectReferences()
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{
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string json = @"{
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""$id"": ""1"",
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""$values"": [
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null,
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{
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""$id"": ""2"",
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""$values"": [
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null
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]
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},
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{
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""$id"": ""3"",
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""$values"": [
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{
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""$id"": ""4"",
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""$values"": [
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{
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""$ref"": ""1""
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}
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]
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}
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]
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}
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]
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}";
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JsonConvert.DeserializeObject<string[][]>(json,
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new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.All });
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}
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public class CircularDictionary : Dictionary<string, CircularDictionary>
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{
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}
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[Test]
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[ExpectedException(typeof(JsonSerializationException))]
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public void SerializeCircularDictionarysError()
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{
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CircularDictionary circularDictionary = new CircularDictionary();
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circularDictionary.Add("other", new CircularDictionary { { "blah", null } });
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circularDictionary.Add("self", circularDictionary);
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JsonConvert.SerializeObject(circularDictionary, Formatting.Indented);
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}
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[Test]
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public void SerializeCircularDictionarysIgnore()
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{
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CircularDictionary circularDictionary = new CircularDictionary();
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circularDictionary.Add("other", new CircularDictionary { { "blah", null } });
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circularDictionary.Add("self", circularDictionary);
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string json = JsonConvert.SerializeObject(circularDictionary, Formatting.Indented,
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new JsonSerializerSettings { ReferenceLoopHandling = ReferenceLoopHandling.Ignore });
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Assert.AreEqual(@"{
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""other"": {
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""blah"": null
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}
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}", json);
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}
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[Test]
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[ExpectedException(typeof(JsonSerializationException)
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#if !NETFX_CORE
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, ExpectedMessage = @"Unexpected end when deserializing object. Line 2, position 9."
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#endif
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)]
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public void UnexpectedEnd()
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{
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string json = @"{
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""$id"":";
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JsonConvert.DeserializeObject<string[][]>(json,
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new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.All });
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}
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public class CircularReferenceClassConverter : JsonConverter
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{
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public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
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{
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CircularReferenceClass circularReferenceClass = (CircularReferenceClass)value;
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string reference = serializer.ReferenceResolver.GetReference(serializer, circularReferenceClass);
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JObject me = new JObject();
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me["$id"] = new JValue(reference);
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me["$type"] = new JValue(value.GetType().Name);
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me["Name"] = new JValue(circularReferenceClass.Name);
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JObject o = JObject.FromObject(circularReferenceClass.Child, serializer);
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me["Child"] = o;
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me.WriteTo(writer);
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}
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public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
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{
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JObject o = JObject.Load(reader);
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string id = (string)o["$id"];
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if (id != null)
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{
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CircularReferenceClass circularReferenceClass = new CircularReferenceClass();
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serializer.Populate(o.CreateReader(), circularReferenceClass);
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return circularReferenceClass;
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}
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else
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{
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string reference = (string)o["$ref"];
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return serializer.ReferenceResolver.ResolveReference(serializer, reference);
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}
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}
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public override bool CanConvert(Type objectType)
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{
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return (objectType == typeof(CircularReferenceClass));
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}
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}
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[Test]
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public void SerializeCircularReferencesWithConverter()
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{
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CircularReferenceClass c1 = new CircularReferenceClass { Name = "c1" };
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CircularReferenceClass c2 = new CircularReferenceClass { Name = "c2" };
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CircularReferenceClass c3 = new CircularReferenceClass { Name = "c3" };
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c1.Child = c2;
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c2.Child = c3;
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c3.Child = c1;
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string json = JsonConvert.SerializeObject(c1, Formatting.Indented, new JsonSerializerSettings
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{
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PreserveReferencesHandling = PreserveReferencesHandling.Objects,
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Converters = new List<JsonConverter> { new CircularReferenceClassConverter() }
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});
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Assert.AreEqual(@"{
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""$id"": ""1"",
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""$type"": ""CircularReferenceClass"",
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""Name"": ""c1"",
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""Child"": {
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""$id"": ""2"",
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""$type"": ""CircularReferenceClass"",
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""Name"": ""c2"",
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""Child"": {
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""$id"": ""3"",
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""$type"": ""CircularReferenceClass"",
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""Name"": ""c3"",
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""Child"": {
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""$ref"": ""1""
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}
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}
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}
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}", json);
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}
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[Test]
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public void DeserializeCircularReferencesWithConverter()
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{
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string json = @"{
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""$id"": ""1"",
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""$type"": ""CircularReferenceClass"",
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""Name"": ""c1"",
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""Child"": {
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""$id"": ""2"",
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""$type"": ""CircularReferenceClass"",
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""Name"": ""c2"",
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|||
|
|
""Child"": {
|
|||
|
|
""$id"": ""3"",
|
|||
|
|
""$type"": ""CircularReferenceClass"",
|
|||
|
|
""Name"": ""c3"",
|
|||
|
|
""Child"": {
|
|||
|
|
""$ref"": ""1""
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}";
|
|||
|
|
|
|||
|
|
CircularReferenceClass c1 = JsonConvert.DeserializeObject<CircularReferenceClass>(json, new JsonSerializerSettings
|
|||
|
|
{
|
|||
|
|
PreserveReferencesHandling = PreserveReferencesHandling.Objects,
|
|||
|
|
Converters = new List<JsonConverter> { new CircularReferenceClassConverter() }
|
|||
|
|
});
|
|||
|
|
|
|||
|
|
Assert.AreEqual("c1", c1.Name);
|
|||
|
|
Assert.AreEqual("c2", c1.Child.Name);
|
|||
|
|
Assert.AreEqual("c3", c1.Child.Child.Name);
|
|||
|
|
Assert.AreEqual("c1", c1.Child.Child.Child.Name);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void SerializeEmployeeReference()
|
|||
|
|
{
|
|||
|
|
EmployeeReference mikeManager = new EmployeeReference
|
|||
|
|
{
|
|||
|
|
Name = "Mike Manager"
|
|||
|
|
};
|
|||
|
|
EmployeeReference joeUser = new EmployeeReference
|
|||
|
|
{
|
|||
|
|
Name = "Joe User",
|
|||
|
|
Manager = mikeManager
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
List<EmployeeReference> employees = new List<EmployeeReference>
|
|||
|
|
{
|
|||
|
|
mikeManager,
|
|||
|
|
joeUser
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
string json = JsonConvert.SerializeObject(employees, Formatting.Indented);
|
|||
|
|
Assert.AreEqual(@"[
|
|||
|
|
{
|
|||
|
|
""$id"": ""1"",
|
|||
|
|
""Name"": ""Mike Manager"",
|
|||
|
|
""Manager"": null
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
""$id"": ""2"",
|
|||
|
|
""Name"": ""Joe User"",
|
|||
|
|
""Manager"": {
|
|||
|
|
""$ref"": ""1""
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
]", json);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void DeserializeEmployeeReference()
|
|||
|
|
{
|
|||
|
|
string json = @"[
|
|||
|
|
{
|
|||
|
|
""$id"": ""1"",
|
|||
|
|
""Name"": ""Mike Manager"",
|
|||
|
|
""Manager"": null
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
""$id"": ""2"",
|
|||
|
|
""Name"": ""Joe User"",
|
|||
|
|
""Manager"": {
|
|||
|
|
""$ref"": ""1""
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
]";
|
|||
|
|
|
|||
|
|
List<EmployeeReference> employees = JsonConvert.DeserializeObject<List<EmployeeReference>>(json);
|
|||
|
|
|
|||
|
|
Assert.AreEqual(2, employees.Count);
|
|||
|
|
Assert.AreEqual("Mike Manager", employees[0].Name);
|
|||
|
|
Assert.AreEqual("Joe User", employees[1].Name);
|
|||
|
|
Assert.AreEqual(employees[0], employees[1].Manager);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void SerializeCircularReference()
|
|||
|
|
{
|
|||
|
|
CircularReferenceClass c1 = new CircularReferenceClass { Name = "c1" };
|
|||
|
|
CircularReferenceClass c2 = new CircularReferenceClass { Name = "c2" };
|
|||
|
|
CircularReferenceClass c3 = new CircularReferenceClass { Name = "c3" };
|
|||
|
|
|
|||
|
|
c1.Child = c2;
|
|||
|
|
c2.Child = c3;
|
|||
|
|
c3.Child = c1;
|
|||
|
|
|
|||
|
|
string json = JsonConvert.SerializeObject(c1, Formatting.Indented, new JsonSerializerSettings
|
|||
|
|
{
|
|||
|
|
PreserveReferencesHandling = PreserveReferencesHandling.Objects
|
|||
|
|
});
|
|||
|
|
|
|||
|
|
Assert.AreEqual(@"{
|
|||
|
|
""$id"": ""1"",
|
|||
|
|
""Name"": ""c1"",
|
|||
|
|
""Child"": {
|
|||
|
|
""$id"": ""2"",
|
|||
|
|
""Name"": ""c2"",
|
|||
|
|
""Child"": {
|
|||
|
|
""$id"": ""3"",
|
|||
|
|
""Name"": ""c3"",
|
|||
|
|
""Child"": {
|
|||
|
|
""$ref"": ""1""
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}", json);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void DeserializeCircularReference()
|
|||
|
|
{
|
|||
|
|
string json = @"{
|
|||
|
|
""$id"": ""1"",
|
|||
|
|
""Name"": ""c1"",
|
|||
|
|
""Child"": {
|
|||
|
|
""$id"": ""2"",
|
|||
|
|
""Name"": ""c2"",
|
|||
|
|
""Child"": {
|
|||
|
|
""$id"": ""3"",
|
|||
|
|
""Name"": ""c3"",
|
|||
|
|
""Child"": {
|
|||
|
|
""$ref"": ""1""
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}";
|
|||
|
|
|
|||
|
|
CircularReferenceClass c1 =
|
|||
|
|
JsonConvert.DeserializeObject<CircularReferenceClass>(json, new JsonSerializerSettings
|
|||
|
|
{
|
|||
|
|
PreserveReferencesHandling = PreserveReferencesHandling.Objects
|
|||
|
|
});
|
|||
|
|
|
|||
|
|
Assert.AreEqual("c1", c1.Name);
|
|||
|
|
Assert.AreEqual("c2", c1.Child.Name);
|
|||
|
|
Assert.AreEqual("c3", c1.Child.Child.Name);
|
|||
|
|
Assert.AreEqual("c1", c1.Child.Child.Child.Name);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void SerializeReferenceInList()
|
|||
|
|
{
|
|||
|
|
EmployeeReference e1 = new EmployeeReference { Name = "e1" };
|
|||
|
|
EmployeeReference e2 = new EmployeeReference { Name = "e2" };
|
|||
|
|
|
|||
|
|
List<EmployeeReference> employees = new List<EmployeeReference> { e1, e2, e1, e2 };
|
|||
|
|
|
|||
|
|
string json = JsonConvert.SerializeObject(employees, Formatting.Indented);
|
|||
|
|
|
|||
|
|
Assert.AreEqual(@"[
|
|||
|
|
{
|
|||
|
|
""$id"": ""1"",
|
|||
|
|
""Name"": ""e1"",
|
|||
|
|
""Manager"": null
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
""$id"": ""2"",
|
|||
|
|
""Name"": ""e2"",
|
|||
|
|
""Manager"": null
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
""$ref"": ""1""
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
""$ref"": ""2""
|
|||
|
|
}
|
|||
|
|
]", json);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void DeserializeReferenceInList()
|
|||
|
|
{
|
|||
|
|
string json = @"[
|
|||
|
|
{
|
|||
|
|
""$id"": ""1"",
|
|||
|
|
""Name"": ""e1"",
|
|||
|
|
""Manager"": null
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
""$id"": ""2"",
|
|||
|
|
""Name"": ""e2"",
|
|||
|
|
""Manager"": null
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
""$ref"": ""1""
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
""$ref"": ""2""
|
|||
|
|
}
|
|||
|
|
]";
|
|||
|
|
|
|||
|
|
List<EmployeeReference> employees = JsonConvert.DeserializeObject<List<EmployeeReference>>(json);
|
|||
|
|
Assert.AreEqual(4, employees.Count);
|
|||
|
|
|
|||
|
|
Assert.AreEqual("e1", employees[0].Name);
|
|||
|
|
Assert.AreEqual("e2", employees[1].Name);
|
|||
|
|
Assert.AreEqual("e1", employees[2].Name);
|
|||
|
|
Assert.AreEqual("e2", employees[3].Name);
|
|||
|
|
|
|||
|
|
Assert.AreEqual(employees[0], employees[2]);
|
|||
|
|
Assert.AreEqual(employees[1], employees[3]);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void SerializeReferenceInDictionary()
|
|||
|
|
{
|
|||
|
|
EmployeeReference e1 = new EmployeeReference { Name = "e1" };
|
|||
|
|
EmployeeReference e2 = new EmployeeReference { Name = "e2" };
|
|||
|
|
|
|||
|
|
Dictionary<string, EmployeeReference> employees = new Dictionary<string, EmployeeReference>
|
|||
|
|
{
|
|||
|
|
{"One", e1},
|
|||
|
|
{"Two", e2},
|
|||
|
|
{"Three", e1},
|
|||
|
|
{"Four", e2}
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
string json = JsonConvert.SerializeObject(employees, Formatting.Indented);
|
|||
|
|
|
|||
|
|
Assert.AreEqual(@"{
|
|||
|
|
""One"": {
|
|||
|
|
""$id"": ""1"",
|
|||
|
|
""Name"": ""e1"",
|
|||
|
|
""Manager"": null
|
|||
|
|
},
|
|||
|
|
""Two"": {
|
|||
|
|
""$id"": ""2"",
|
|||
|
|
""Name"": ""e2"",
|
|||
|
|
""Manager"": null
|
|||
|
|
},
|
|||
|
|
""Three"": {
|
|||
|
|
""$ref"": ""1""
|
|||
|
|
},
|
|||
|
|
""Four"": {
|
|||
|
|
""$ref"": ""2""
|
|||
|
|
}
|
|||
|
|
}", json);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void DeserializeReferenceInDictionary()
|
|||
|
|
{
|
|||
|
|
string json = @"{
|
|||
|
|
""One"": {
|
|||
|
|
""$id"": ""1"",
|
|||
|
|
""Name"": ""e1"",
|
|||
|
|
""Manager"": null
|
|||
|
|
},
|
|||
|
|
""Two"": {
|
|||
|
|
""$id"": ""2"",
|
|||
|
|
""Name"": ""e2"",
|
|||
|
|
""Manager"": null
|
|||
|
|
},
|
|||
|
|
""Three"": {
|
|||
|
|
""$ref"": ""1""
|
|||
|
|
},
|
|||
|
|
""Four"": {
|
|||
|
|
""$ref"": ""2""
|
|||
|
|
}
|
|||
|
|
}";
|
|||
|
|
|
|||
|
|
Dictionary<string, EmployeeReference> employees = JsonConvert.DeserializeObject<Dictionary<string, EmployeeReference>>(json);
|
|||
|
|
Assert.AreEqual(4, employees.Count);
|
|||
|
|
|
|||
|
|
EmployeeReference e1 = employees["One"];
|
|||
|
|
EmployeeReference e2 = employees["Two"];
|
|||
|
|
|
|||
|
|
Assert.AreEqual("e1", e1.Name);
|
|||
|
|
Assert.AreEqual("e2", e2.Name);
|
|||
|
|
|
|||
|
|
Assert.AreEqual(e1, employees["Three"]);
|
|||
|
|
Assert.AreEqual(e2, employees["Four"]);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void ExampleWithout()
|
|||
|
|
{
|
|||
|
|
Person p = new Person
|
|||
|
|
{
|
|||
|
|
BirthDate = new DateTime(1980, 12, 23, 0, 0, 0, DateTimeKind.Utc),
|
|||
|
|
LastModified = new DateTime(2009, 2, 20, 12, 59, 21, DateTimeKind.Utc),
|
|||
|
|
Department = "IT",
|
|||
|
|
Name = "James"
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
List<Person> people = new List<Person>();
|
|||
|
|
people.Add(p);
|
|||
|
|
people.Add(p);
|
|||
|
|
|
|||
|
|
string json = JsonConvert.SerializeObject(people, Formatting.Indented);
|
|||
|
|
//[
|
|||
|
|
// {
|
|||
|
|
// "Name": "James",
|
|||
|
|
// "BirthDate": "\/Date(346377600000)\/",
|
|||
|
|
// "LastModified": "\/Date(1235134761000)\/"
|
|||
|
|
// },
|
|||
|
|
// {
|
|||
|
|
// "Name": "James",
|
|||
|
|
// "BirthDate": "\/Date(346377600000)\/",
|
|||
|
|
// "LastModified": "\/Date(1235134761000)\/"
|
|||
|
|
// }
|
|||
|
|
//]
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void ExampleWith()
|
|||
|
|
{
|
|||
|
|
Person p = new Person
|
|||
|
|
{
|
|||
|
|
BirthDate = new DateTime(1980, 12, 23, 0, 0, 0, DateTimeKind.Utc),
|
|||
|
|
LastModified = new DateTime(2009, 2, 20, 12, 59, 21, DateTimeKind.Utc),
|
|||
|
|
Department = "IT",
|
|||
|
|
Name = "James"
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
List<Person> people = new List<Person>();
|
|||
|
|
people.Add(p);
|
|||
|
|
people.Add(p);
|
|||
|
|
|
|||
|
|
string json = JsonConvert.SerializeObject(people, Formatting.Indented,
|
|||
|
|
new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.Objects });
|
|||
|
|
//[
|
|||
|
|
// {
|
|||
|
|
// "$id": "1",
|
|||
|
|
// "Name": "James",
|
|||
|
|
// "BirthDate": "\/Date(346377600000)\/",
|
|||
|
|
// "LastModified": "\/Date(1235134761000)\/"
|
|||
|
|
// },
|
|||
|
|
// {
|
|||
|
|
// "$ref": "1"
|
|||
|
|
// }
|
|||
|
|
//]
|
|||
|
|
|
|||
|
|
List<Person> deserializedPeople = JsonConvert.DeserializeObject<List<Person>>(json,
|
|||
|
|
new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.Objects });
|
|||
|
|
|
|||
|
|
Console.WriteLine(deserializedPeople.Count);
|
|||
|
|
// 2
|
|||
|
|
|
|||
|
|
Person p1 = deserializedPeople[0];
|
|||
|
|
Person p2 = deserializedPeople[1];
|
|||
|
|
|
|||
|
|
Console.WriteLine(p1.Name);
|
|||
|
|
// James
|
|||
|
|
Console.WriteLine(p2.Name);
|
|||
|
|
// James
|
|||
|
|
|
|||
|
|
bool equal = Object.ReferenceEquals(p1, p2);
|
|||
|
|
// true
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[JsonObject(MemberSerialization = MemberSerialization.OptIn)]
|
|||
|
|
public class User
|
|||
|
|
{
|
|||
|
|
#region properties
|
|||
|
|
|
|||
|
|
[JsonProperty(Required = Required.Always, PropertyName = "SecretType")]
|
|||
|
|
private string secretType;
|
|||
|
|
|
|||
|
|
[JsonProperty(Required = Required.Always)]
|
|||
|
|
public string Login { get; set; }
|
|||
|
|
|
|||
|
|
public Type SecretType
|
|||
|
|
{
|
|||
|
|
get { return Type.GetType(secretType); }
|
|||
|
|
set { secretType = value.AssemblyQualifiedName; }
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[JsonProperty]
|
|||
|
|
public User Friend { get; set; }
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
#region constructors
|
|||
|
|
|
|||
|
|
public User()
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public User(string login, Type secretType)
|
|||
|
|
: this()
|
|||
|
|
{
|
|||
|
|
this.Login = login;
|
|||
|
|
this.SecretType = secretType;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
#region methods
|
|||
|
|
|
|||
|
|
public override int GetHashCode()
|
|||
|
|
{
|
|||
|
|
return SecretType.GetHashCode();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public override string ToString()
|
|||
|
|
{
|
|||
|
|
return string.Format("SecretType: {0}, Login: {1}", secretType, Login);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void DeserializeTypeWithDubiousGetHashcode()
|
|||
|
|
{
|
|||
|
|
User user1 = new User("Peter", typeof(Version));
|
|||
|
|
User user2 = new User("Michael", typeof(Version));
|
|||
|
|
|
|||
|
|
user1.Friend = user2;
|
|||
|
|
|
|||
|
|
JsonSerializerSettings serializerSettings = new JsonSerializerSettings
|
|||
|
|
{
|
|||
|
|
TypeNameHandling = TypeNameHandling.All,
|
|||
|
|
ReferenceLoopHandling = ReferenceLoopHandling.Ignore,
|
|||
|
|
ConstructorHandling = ConstructorHandling.AllowNonPublicDefaultConstructor,
|
|||
|
|
PreserveReferencesHandling = PreserveReferencesHandling.Objects
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
string json = JsonConvert.SerializeObject(user1, Formatting.Indented, serializerSettings);
|
|||
|
|
|
|||
|
|
User deserializedUser = JsonConvert.DeserializeObject<User>(json, serializerSettings);
|
|||
|
|
Assert.IsNotNull(deserializedUser);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
[Test]
|
|||
|
|
public void PreserveReferencesHandlingWithReusedJsonSerializer()
|
|||
|
|
{
|
|||
|
|
MyClass c = new MyClass();
|
|||
|
|
|
|||
|
|
IList<MyClass> myClasses1 = new List<MyClass>
|
|||
|
|
{
|
|||
|
|
c,
|
|||
|
|
c
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
var ser = new JsonSerializer()
|
|||
|
|
{
|
|||
|
|
PreserveReferencesHandling = PreserveReferencesHandling.All
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
MemoryStream ms = new MemoryStream();
|
|||
|
|
|
|||
|
|
using (var sw = new StreamWriter(ms))
|
|||
|
|
using (var writer = new JsonTextWriter(sw) { Formatting = Formatting.Indented })
|
|||
|
|
{
|
|||
|
|
ser.Serialize(writer, myClasses1);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
byte[] data = ms.ToArray();
|
|||
|
|
string json = Encoding.UTF8.GetString(data, 0, data.Length);
|
|||
|
|
|
|||
|
|
Assert.AreEqual(@"{
|
|||
|
|
""$id"": ""1"",
|
|||
|
|
""$values"": [
|
|||
|
|
{
|
|||
|
|
""$id"": ""2"",
|
|||
|
|
""PreProperty"": 0,
|
|||
|
|
""PostProperty"": 0
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
""$ref"": ""2""
|
|||
|
|
}
|
|||
|
|
]
|
|||
|
|
}", json);
|
|||
|
|
|
|||
|
|
ms = new MemoryStream(data);
|
|||
|
|
IList<MyClass> myClasses2;
|
|||
|
|
|
|||
|
|
using (var sr = new StreamReader(ms))
|
|||
|
|
using (var reader = new JsonTextReader(sr))
|
|||
|
|
{
|
|||
|
|
myClasses2 = ser.Deserialize<IList<MyClass>>(reader);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
Assert.AreEqual(2, myClasses2.Count);
|
|||
|
|
Assert.AreEqual(myClasses2[0], myClasses2[1]);
|
|||
|
|
|
|||
|
|
Assert.AreNotEqual(myClasses1[0], myClasses2[0]);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|