/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerCollectionsTests.cs

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#region License
// Copyright (c) 2007 James Newton-King
//
// 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.
#endregion

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Runtime.Serialization;
#if !(NET35 || NET20 || PORTABLE || PORTABLE40)
using System.Collections.Concurrent;
#endif
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Globalization;
using System.IO;
#if NET20
using Newtonsoft.Json.Utilities.LinqBridge;
#else
using System.Linq;
#endif
using System.Text;
using System.Xml;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json.Serialization;
using Newtonsoft.Json.Tests.TestObjects;
using Newtonsoft.Json.Tests.TestObjects.Events;
using Newtonsoft.Json.Tests.TestObjects.Organization;
using Newtonsoft.Json.Utilities;
#if DNXCORE50
using Xunit;
using Test = Xunit.FactAttribute;
using Assert = Newtonsoft.Json.Tests.XUnitAssert;
#else
using NUnit.Framework;
#endif
#if !NET20 && !PORTABLE40
using System.Xml.Linq;
#endif

namespace Newtonsoft.Json.Tests.Serialization
{
    [TestFixture]
    public class JsonSerializerCollectionsTests : TestFixtureBase
    {
        [Test]
        public void DoubleKey_WholeValue()
        {
            Dictionary<double, int> dictionary = new Dictionary<double, int> { { 1d, 1 } };
            string output = JsonConvert.SerializeObject(dictionary);
            Assert.AreEqual(@"{""1"":1}", output);

            Dictionary<double, int> deserializedValue = JsonConvert.DeserializeObject<Dictionary<double, int>>(output);
            Assert.AreEqual(1d, deserializedValue.First().Key);
        }

        [Test]
        public void DoubleKey_MaxValue()
        {
            Dictionary<double, int> dictionary = new Dictionary<double, int> { { double.MaxValue, 1 } };
            string output = JsonConvert.SerializeObject(dictionary);
            Assert.AreEqual(@"{""1.7976931348623157E+308"":1}", output);

            Dictionary<double, int> deserializedValue = JsonConvert.DeserializeObject<Dictionary<double, int>>(output);
            Assert.AreEqual(double.MaxValue, deserializedValue.First().Key);
        }

        [Test]
        public void FloatKey_MaxValue()
        {
            Dictionary<float, int> dictionary = new Dictionary<float, int> { { float.MaxValue, 1 } };
            string output = JsonConvert.SerializeObject(dictionary);
            Assert.AreEqual(@"{""3.40282347E+38"":1}", output);

            Dictionary<float, int> deserializedValue = JsonConvert.DeserializeObject<Dictionary<float, int>>(output);
            Assert.AreEqual(float.MaxValue, deserializedValue.First().Key);
        }

        public class TestCollectionPrivateParameterized : IEnumerable<int>
        {
            private readonly List<int> _bars;

            public TestCollectionPrivateParameterized()
            {
                _bars = new List<int>();
            }

            [JsonConstructor]
            private TestCollectionPrivateParameterized(IEnumerable<int> bars)
            {
                _bars = new List<int>(bars);
            }

            public void Add(int bar)
            {
                _bars.Add(bar);
            }

            public IEnumerator<int> GetEnumerator() => _bars.GetEnumerator();

            IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
        }

        [Test]
        public void CollectionJsonConstructorPrivateParameterized()
        {
            TestCollectionPrivateParameterized c1 = new TestCollectionPrivateParameterized();
            c1.Add(0);
            c1.Add(1);
            c1.Add(2);
            string json = JsonConvert.SerializeObject(c1);
            TestCollectionPrivateParameterized c2 = JsonConvert.DeserializeObject<TestCollectionPrivateParameterized>(json);

            List<int> values = c2.ToList();

            Assert.AreEqual(3, values.Count);
            Assert.AreEqual(0, values[0]);
            Assert.AreEqual(1, values[1]);
            Assert.AreEqual(2, values[2]);
        }

        public class TestCollectionPrivate : List<int>
        {
            [JsonConstructor]
            private TestCollectionPrivate()
            {
            }

            public static TestCollectionPrivate Create()
            {
                return new TestCollectionPrivate();
            }
        }

        [Test]
        public void CollectionJsonConstructorPrivate()
        {
            TestCollectionPrivate c1 = TestCollectionPrivate.Create();
            c1.Add(0);
            c1.Add(1);
            c1.Add(2);
            string json = JsonConvert.SerializeObject(c1);
            TestCollectionPrivate c2 = JsonConvert.DeserializeObject<TestCollectionPrivate>(json);

            List<int> values = c2.ToList();

            Assert.AreEqual(3, values.Count);
            Assert.AreEqual(0, values[0]);
            Assert.AreEqual(1, values[1]);
            Assert.AreEqual(2, values[2]);
        }

        public class TestCollectionMultipleParameters : List<int>
        {
            [JsonConstructor]
            public TestCollectionMultipleParameters(string s1, string s2)
            {
            }
        }

        [Test]
        public void CollectionJsonConstructorMultipleParameters()
        {
            ExceptionAssert.Throws<JsonException>(
                () => JsonConvert.SerializeObject(new TestCollectionMultipleParameters(null, null)),
                "Constructor for 'Newtonsoft.Json.Tests.Serialization.JsonSerializerCollectionsTests+TestCollectionMultipleParameters' must have no parameters or a single parameter that implements 'System.Collections.Generic.IEnumerable`1[System.Int32]'.");
        }

        public class TestCollectionBadIEnumerableParameter : List<int>
        {
            [JsonConstructor]
            public TestCollectionBadIEnumerableParameter(List<string> l)
            {
            }
        }

        [Test]
        public void CollectionJsonConstructorBadIEnumerableParameter()
        {
            ExceptionAssert.Throws<JsonException>(
                () => JsonConvert.SerializeObject(new TestCollectionBadIEnumerableParameter(null)),
                "Constructor for 'Newtonsoft.Json.Tests.Serialization.JsonSerializerCollectionsTests+TestCollectionBadIEnumerableParameter' must have no parameters or a single parameter that implements 'System.Collections.Generic.IEnumerable`1[System.Int32]'.");
        }

#if !(DNXCORE50 || PORTABLE)
        public class TestCollectionNonGeneric : ArrayList
        {
            [JsonConstructor]
            public TestCollectionNonGeneric(IEnumerable l)
                : base(l.Cast<object>().ToList())
            {
            }
        }

        [Test]
        public void CollectionJsonConstructorNonGeneric()
        {
            string json = @"[1,2,3]";
            TestCollectionNonGeneric l = JsonConvert.DeserializeObject<TestCollectionNonGeneric>(json);

            Assert.AreEqual(3, l.Count);
            Assert.AreEqual(1, l[0]);
            Assert.AreEqual(2, l[1]);
            Assert.AreEqual(3, l[2]);
        }
#endif

        public class TestDictionaryPrivateParameterized : Dictionary<string, int>
        {
            public TestDictionaryPrivateParameterized()
            {
            }

            [JsonConstructor]
            private TestDictionaryPrivateParameterized(IEnumerable<KeyValuePair<string, int>> bars)
                : base(bars.ToDictionary(k => k.Key, k => k.Value))
            {
            }
        }

        [Test]
        public void DictionaryJsonConstructorPrivateParameterized()
        {
            TestDictionaryPrivateParameterized c1 = new TestDictionaryPrivateParameterized();
            c1.Add("zero", 0);
            c1.Add("one", 1);
            c1.Add("two", 2);
            string json = JsonConvert.SerializeObject(c1);
            TestDictionaryPrivateParameterized c2 = JsonConvert.DeserializeObject<TestDictionaryPrivateParameterized>(json);

            Assert.AreEqual(3, c2.Count);
            Assert.AreEqual(0, c2["zero"]);
            Assert.AreEqual(1, c2["one"]);
            Assert.AreEqual(2, c2["two"]);
        }

        public class TestDictionaryPrivate : Dictionary<string, int>
        {
            [JsonConstructor]
            private TestDictionaryPrivate()
            {
            }

            public static TestDictionaryPrivate Create()
            {
                return new TestDictionaryPrivate();
            }
        }

        [Test]
        public void DictionaryJsonConstructorPrivate()
        {
            TestDictionaryPrivate c1 = TestDictionaryPrivate.Create();
            c1.Add("zero", 0);
            c1.Add("one", 1);
            c1.Add("two", 2);
            string json = JsonConvert.SerializeObject(c1);
            TestDictionaryPrivate c2 = JsonConvert.DeserializeObject<TestDictionaryPrivate>(json);

            Assert.AreEqual(3, c2.Count);
            Assert.AreEqual(0, c2["zero"]);
            Assert.AreEqual(1, c2["one"]);
            Assert.AreEqual(2, c2["two"]);
        }

        public class TestDictionaryMultipleParameters : Dictionary<string, int>
        {
            [JsonConstructor]
            public TestDictionaryMultipleParameters(string s1, string s2)
            {
            }
        }

        [Test]
        public void DictionaryJsonConstructorMultipleParameters()
        {
            ExceptionAssert.Throws<JsonException>(
                () => JsonConvert.SerializeObject(new TestDictionaryMultipleParameters(null, null)),
                "Constructor for 'Newtonsoft.Json.Tests.Serialization.JsonSerializerCollectionsTests+TestDictionaryMultipleParameters' must have no parameters or a single parameter that implements 'System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Int32]]'.");
        }

        public class TestDictionaryBadIEnumerableParameter : Dictionary<string, int>
        {
            [JsonConstructor]
            public TestDictionaryBadIEnumerableParameter(Dictionary<string, string> l)
            {
            }
        }

        [Test]
        public void DictionaryJsonConstructorBadIEnumerableParameter()
        {
            ExceptionAssert.Throws<JsonException>(
                () => JsonConvert.SerializeObject(new TestDictionaryBadIEnumerableParameter(null)),
                "Constructor for 'Newtonsoft.Json.Tests.Serialization.JsonSerializerCollectionsTests+TestDictionaryBadIEnumerableParameter' must have no parameters or a single parameter that implements 'System.Collections.Generic.IEnumerable`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Int32]]'.");
        }

#if !(DNXCORE50 || PORTABLE)
        public class TestDictionaryNonGeneric : Hashtable
        {
            [JsonConstructor]
            public TestDictionaryNonGeneric(IDictionary d)
                : base(d)
            {
            }
        }

        [Test]
        public void DictionaryJsonConstructorNonGeneric()
        {
            string json = @"{'zero':0,'one':1,'two':2}";
            TestDictionaryNonGeneric d = JsonConvert.DeserializeObject<TestDictionaryNonGeneric>(json);

            Assert.AreEqual(3, d.Count);
            Assert.AreEqual(0, d["zero"]);
            Assert.AreEqual(1, d["one"]);
            Assert.AreEqual(2, d["two"]);
        }
#endif

#if !(DNXCORE50)
        public class NameValueCollectionTestClass
        {
            public NameValueCollection Collection { get; set; }
        }

        [Test]
        public void DeserializeNameValueCollection()
        {
            ExceptionAssert.Throws<JsonSerializationException>(
                () => JsonConvert.DeserializeObject<NameValueCollectionTestClass>("{Collection:[]}"),
                "Cannot create and populate list type System.Collections.Specialized.NameValueCollection. Path 'Collection', line 1, position 13.");
        }
#endif

#if !(NET35 || NET20 || PORTABLE || PORTABLE40)
        public class SomeObject
        {
            public string Text1 { get; set; }
        }

        public class CustomConcurrentDictionary : ConcurrentDictionary<string, List<SomeObject>>
        {
            [OnDeserialized]
            internal void OnDeserializedMethod(StreamingContext context)
            {
                ((IDictionary)this).Add("key2", new List<SomeObject>
                {
                    new SomeObject
                    {
                        Text1 = "value2"
                    }
                });
            }
        }

        [Test]
        public void SerializeCustomConcurrentDictionary()
        {
            IDictionary d = new CustomConcurrentDictionary();
            d.Add("key", new List<SomeObject>
            {
                new SomeObject
                {
                    Text1 = "value1"
                }
            });

            string json = JsonConvert.SerializeObject(d, Formatting.Indented);

            Assert.AreEqual(@"{
  ""key"": [
    {
      ""Text1"": ""value1""
    }
  ]
}", json);

            CustomConcurrentDictionary d2 = JsonConvert.DeserializeObject<CustomConcurrentDictionary>(json);

            Assert.AreEqual(2, d2.Count);
            Assert.AreEqual("value1", d2["key"][0].Text1);
            Assert.AreEqual("value2", d2["key2"][0].Text1);
        }
#endif

        [Test]
        public void NonZeroBasedArray()
        {
            var onebasedArray = Array.CreateInstance(typeof(string), new[] { 3 }, new[] { 2 });

            for (var i = onebasedArray.GetLowerBound(0); i <= onebasedArray.GetUpperBound(0); i++)
            {
                onebasedArray.SetValue(i.ToString(CultureInfo.InvariantCulture), new[] { i, });
            }

            string output = JsonConvert.SerializeObject(onebasedArray, Formatting.Indented);

            StringAssert.AreEqual(@"[
  ""2"",
  ""3"",
  ""4""
]", output);
        }

        [Test]
        public void NonZeroBasedMultiArray()
        {
            // lets create a two dimensional array, each rank is 1-based of with a capacity of 4.
            var onebasedArray = Array.CreateInstance(typeof(string), new[] { 3, 3 }, new[] { 1, 2 });

            // Iterate of the array elements and assign a random double
            for (var i = onebasedArray.GetLowerBound(0); i <= onebasedArray.GetUpperBound(0); i++)
            {
                for (var j = onebasedArray.GetLowerBound(1); j <= onebasedArray.GetUpperBound(1); j++)
                {
                    onebasedArray.SetValue(i + "_" + j, new[] { i, j });
                }
            }

            // Now lets try and serialize the Array
            string output = JsonConvert.SerializeObject(onebasedArray, Formatting.Indented);

            StringAssert.AreEqual(@"[
  [
    ""1_2"",
    ""1_3"",
    ""1_4""
  ],
  [
    ""2_2"",
    ""2_3"",
    ""2_4""
  ],
  [
    ""3_2"",
    ""3_3"",
    ""3_4""
  ]
]", output);
        }

        [Test]
        public void MultiDObjectArray()
        {
            object[,] myOtherArray =
            {
                { new KeyValuePair<string, double>("my value", 0.8), "foobar" },
                { true, 0.4d },
                { 0.05f, 6 }
            };

            string myOtherArrayAsString = JsonConvert.SerializeObject(myOtherArray, Formatting.Indented);

            StringAssert.AreEqual(@"[
  [
    {
      ""Key"": ""my value"",
      ""Value"": 0.8
    },
    ""foobar""
  ],
  [
    true,
    0.4
  ],
  [
    0.05,
    6
  ]
]", myOtherArrayAsString);

            JObject o = JObject.Parse(@"{
              ""Key"": ""my value"",
              ""Value"": 0.8
            }");

            object[,] myOtherResult = JsonConvert.DeserializeObject<object[,]>(myOtherArrayAsString);
            Assert.IsTrue(JToken.DeepEquals(o, (JToken)myOtherResult[0, 0]));
            Assert.AreEqual("foobar", myOtherResult[0, 1]);

            Assert.AreEqual(true, myOtherResult[1, 0]);
            Assert.AreEqual(0.4, myOtherResult[1, 1]);

            Assert.AreEqual(0.05, myOtherResult[2, 0]);
            Assert.AreEqual(6L, myOtherResult[2, 1]);
        }

        public class EnumerableClass<T> : IEnumerable<T>
        {
            private readonly IList<T> _values;

            public EnumerableClass(IEnumerable<T> values)
            {
                _values = new List<T>(values);
            }

            public IEnumerator<T> GetEnumerator()
            {
                return _values.GetEnumerator();
            }

            IEnumerator IEnumerable.GetEnumerator()
            {
                return GetEnumerator();
            }
        }

        [Test]
        public void DeserializeIEnumerableFromConstructor()
        {
            string json = @"[
  1,
  2,
  null
]";

            var result = JsonConvert.DeserializeObject<EnumerableClass<int?>>(json);

            Assert.AreEqual(3, result.Count());
            Assert.AreEqual(1, result.ElementAt(0));
            Assert.AreEqual(2, result.ElementAt(1));
            Assert.AreEqual(null, result.ElementAt(2));
        }

        public class EnumerableClassFailure<T> : IEnumerable<T>
        {
            private readonly IList<T> _values;

            public EnumerableClassFailure()
            {
                _values = new List<T>();
            }

            public IEnumerator<T> GetEnumerator()
            {
                return _values.GetEnumerator();
            }

            IEnumerator IEnumerable.GetEnumerator()
            {
                return GetEnumerator();
            }
        }

        [Test]
        public void DeserializeIEnumerableFromConstructor_Failure()
        {
            string json = @"[
  ""One"",
  ""II"",
  ""3""
]";

            ExceptionAssert.Throws<JsonSerializationException>(() => JsonConvert.DeserializeObject<EnumerableClassFailure<string>>(json), "Cannot create and populate list type Newtonsoft.Json.Tests.Serialization.JsonSerializerCollectionsTests+EnumerableClassFailure`1[System.String]. Path '', line 1, position 1.");
        }

        public class PrivateDefaultCtorList<T> : List<T>
        {
            private PrivateDefaultCtorList()
            {
            }
        }

        [Test]
        public void DeserializePrivateListCtor()
        {
            ExceptionAssert.Throws<JsonSerializationException>(() => JsonConvert.DeserializeObject<PrivateDefaultCtorList<int>>("[1,2]"), "Unable to find a constructor to use for type Newtonsoft.Json.Tests.Serialization.JsonSerializerCollectionsTests+PrivateDefaultCtorList`1[System.Int32]. Path '', line 1, position 1.");

            var list = JsonConvert.DeserializeObject<PrivateDefaultCtorList<int>>("[1,2]", new JsonSerializerSettings
            {
                ConstructorHandling = ConstructorHandling.AllowNonPublicDefaultConstructor
            });

            Assert.AreEqual(2, list.Count);
        }

        public class PrivateDefaultCtorWithIEnumerableCtorList<T> : List<T>
        {
            private PrivateDefaultCtorWithIEnumerableCtorList()
            {
            }

            public PrivateDefaultCtorWithIEnumerableCtorList(IEnumerable<T> values)
                : base(values)
            {
                Add(default(T));
            }
        }

        [Test]
        public void DeserializePrivateListConstructor()
        {
            var list = JsonConvert.DeserializeObject<PrivateDefaultCtorWithIEnumerableCtorList<int>>("[1,2]");

            Assert.AreEqual(3, list.Count);
            Assert.AreEqual(1, list[0]);
            Assert.AreEqual(2, list[1]);
            Assert.AreEqual(0, list[2]);
        }

        [Test]
        public void DeserializeNonIsoDateDictionaryKey()
        {
            Dictionary<DateTime, string> d = JsonConvert.DeserializeObject<Dictionary<DateTime, string>>(@"{""04/28/2013 00:00:00"":""test""}");

            Assert.AreEqual(1, d.Count);

            DateTime key = DateTime.Parse("04/28/2013 00:00:00", CultureInfo.InvariantCulture);
            Assert.AreEqual("test", d[key]);
        }

        [Test]
        public void DeserializeNonGenericList()
        {
            IList l = JsonConvert.DeserializeObject<IList>("['string!']");

            Assert.AreEqual(typeof(List<object>), l.GetType());
            Assert.AreEqual(1, l.Count);
            Assert.AreEqual("string!", l[0]);
        }

#if !(NET40 || NET35 || NET20 || PORTABLE40)
        [Test]
        public void DeserializeReadOnlyListInterface()
        {
            IReadOnlyList<int> list = JsonConvert.DeserializeObject<IReadOnlyList<int>>("[1,2,3]");

            Assert.AreEqual(3, list.Count);
            Assert.AreEqual(1, list[0]);
            Assert.AreEqual(2, list[1]);
            Assert.AreEqual(3, list[2]);
        }

        [Test]
        public void DeserializeReadOnlyCollectionInterface()
        {
            IReadOnlyCollection<int> list = JsonConvert.DeserializeObject<IReadOnlyCollection<int>>("[1,2,3]");

            Assert.AreEqual(3, list.Count);

            Assert.AreEqual(1, list.ElementAt(0));
            Assert.AreEqual(2, list.ElementAt(1));
            Assert.AreEqual(3, list.ElementAt(2));
        }

        [Test]
        public void DeserializeReadOnlyCollection()
        {
            ReadOnlyCollection<int> list = JsonConvert.DeserializeObject<ReadOnlyCollection<int>>("[1,2,3]");

            Assert.AreEqual(3, list.Count);

            Assert.AreEqual(1, list[0]);
            Assert.AreEqual(2, list[1]);
            Assert.AreEqual(3, list[2]);
        }

        [Test]
        public void DeserializeReadOnlyDictionaryInterface()
        {
            IReadOnlyDictionary<string, int> dic = JsonConvert.DeserializeObject<IReadOnlyDictionary<string, int>>("{'one':1,'two':2}");

            Assert.AreEqual(2, dic.Count);

            Assert.AreEqual(1, dic["one"]);
            Assert.AreEqual(2, dic["two"]);

            CustomAssert.IsInstanceOfType(typeof(ReadOnlyDictionary<string, int>), dic);
        }

        [Test]
        public void DeserializeReadOnlyDictionary()
        {
            ReadOnlyDictionary<string, int> dic = JsonConvert.DeserializeObject<ReadOnlyDictionary<string, int>>("{'one':1,'two':2}");

            Assert.AreEqual(2, dic.Count);

            Assert.AreEqual(1, dic["one"]);
            Assert.AreEqual(2, dic["two"]);
        }

        public class CustomReadOnlyDictionary<TKey, TValue> : IReadOnlyDictionary<TKey, TValue>
        {
            private readonly IDictionary<TKey, TValue> _dictionary;

            public CustomReadOnlyDictionary(IDictionary<TKey, TValue> dictionary)
            {
                _dictionary = dictionary;
            }

            public bool ContainsKey(TKey key)
            {
                return _dictionary.ContainsKey(key);
            }

            public IEnumerable<TKey> Keys
            {
                get { return _dictionary.Keys; }
            }

            public bool TryGetValue(TKey key, out TValue value)
            {
                return _dictionary.TryGetValue(key, out value);
            }

            public IEnumerable<TValue> Values
            {
                get { return _dictionary.Values; }
            }

            public TValue this[TKey key]
            {
                get { return _dictionary[key]; }
            }

            public int Count
            {
                get { return _dictionary.Count; }
            }

            public IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator()
            {
                return _dictionary.GetEnumerator();
            }

            IEnumerator IEnumerable.GetEnumerator()
            {
                return _dictionary.GetEnumerator();
            }
        }

        [Test]
        public void SerializeCustomReadOnlyDictionary()
        {
            IDictionary<string, int> d = new Dictionary<string, int>
            {
                { "one", 1 },
                { "two", 2 }
            };

            CustomReadOnlyDictionary<string, int> dic = new CustomReadOnlyDictionary<string, int>(d);

            string json = JsonConvert.SerializeObject(dic, Formatting.Indented);
            StringAssert.AreEqual(@"{
  ""one"": 1,
  ""two"": 2
}", json);
        }

        public class CustomReadOnlyCollection<T> : IReadOnlyCollection<T>
        {
            private readonly IList<T> _values;

            public CustomReadOnlyCollection(IList<T> values)
            {
                _values = values;
            }

            public int Count
            {
                get { return _values.Count; }
            }

            public IEnumerator<T> GetEnumerator()
            {
                return _values.GetEnumerator();
            }

            IEnumerator IEnumerable.GetEnumerator()
            {
                return _values.GetEnumerator();
            }
        }

        [Test]
        public void SerializeCustomReadOnlyCollection()
        {
            IList<int> l = new List<int>
            {
                1,
                2,
                3
            };

            CustomReadOnlyCollection<int> list = new CustomReadOnlyCollection<int>(l);

            string json = JsonConvert.SerializeObject(list, Formatting.Indented);
            StringAssert.AreEqual(@"[
  1,
  2,
  3
]", json);
        }
#endif

        [Test]
        public void TestEscapeDictionaryStrings()
        {
            const string s = @"host\user";
            string serialized = JsonConvert.SerializeObject(s);
            Assert.AreEqual(@"""host\\user""", serialized);

            Dictionary<int, object> d1 = new Dictionary<int, object>();
            d1.Add(5, s);
            Assert.AreEqual(@"{""5"":""host\\user""}", JsonConvert.SerializeObject(d1));

            Dictionary<string, object> d2 = new Dictionary<string, object>();
            d2.Add(s, 5);
            Assert.AreEqual(@"{""host\\user"":5}", JsonConvert.SerializeObject(d2));
        }

        public class GenericListTestClass
        {
            public List<string> GenericList { get; set; }

            public GenericListTestClass()
            {
                GenericList = new List<string>();
            }
        }

        [Test]
        public void DeserializeExistingGenericList()
        {
            GenericListTestClass c = new GenericListTestClass();
            c.GenericList.Add("1");
            c.GenericList.Add("2");

            string json = JsonConvert.SerializeObject(c, Formatting.Indented);

            GenericListTestClass newValue = JsonConvert.DeserializeObject<GenericListTestClass>(json);
            Assert.AreEqual(2, newValue.GenericList.Count);
            Assert.AreEqual(typeof(List<string>), newValue.GenericList.GetType());
        }

        [Test]
        public void DeserializeSimpleKeyValuePair()
        {
            List<KeyValuePair<string, string>> list = new List<KeyValuePair<string, string>>();
            list.Add(new KeyValuePair<string, string>("key1", "value1"));
            list.Add(new KeyValuePair<string, string>("key2", "value2"));

            string json = JsonConvert.SerializeObject(list);

            Assert.AreEqual(@"[{""Key"":""key1"",""Value"":""value1""},{""Key"":""key2"",""Value"":""value2""}]", json);

            List<KeyValuePair<string, string>> result = JsonConvert.DeserializeObject<List<KeyValuePair<string, string>>>(json);
            Assert.AreEqual(2, result.Count);
            Assert.AreEqual("key1", result[0].Key);
            Assert.AreEqual("value1", result[0].Value);
            Assert.AreEqual("key2", result[1].Key);
            Assert.AreEqual("value2", result[1].Value);
        }

        [Test]
        public void DeserializeComplexKeyValuePair()
        {
            DateTime dateTime = new DateTime(2000, 12, 1, 23, 1, 1, DateTimeKind.Utc);

            List<KeyValuePair<string, WagePerson>> list = new List<KeyValuePair<string, WagePerson>>();
            list.Add(new KeyValuePair<string, WagePerson>("key1", new WagePerson
            {
                BirthDate = dateTime,
                Department = "Department1",
                LastModified = dateTime,
                HourlyWage = 1
            }));
            list.Add(new KeyValuePair<string, WagePerson>("key2", new WagePerson
            {
                BirthDate = dateTime,
                Department = "Department2",
                LastModified = dateTime,
                HourlyWage = 2
            }));

            string json = JsonConvert.SerializeObject(list, Formatting.Indented);

            StringAssert.AreEqual(@"[
  {
    ""Key"": ""key1"",
    ""Value"": {
      ""HourlyWage"": 1.0,
      ""Name"": null,
      ""BirthDate"": ""2000-12-01T23:01:01Z"",
      ""LastModified"": ""2000-12-01T23:01:01Z""
    }
  },
  {
    ""Key"": ""key2"",
    ""Value"": {
      ""HourlyWage"": 2.0,
      ""Name"": null,
      ""BirthDate"": ""2000-12-01T23:01:01Z"",
      ""LastModified"": ""2000-12-01T23:01:01Z""
    }
  }
]", json);

            List<KeyValuePair<string, WagePerson>> result = JsonConvert.DeserializeObject<List<KeyValuePair<string, WagePerson>>>(json);
            Assert.AreEqual(2, result.Count);
            Assert.AreEqual("key1", result[0].Key);
            Assert.AreEqual(1, result[0].Value.HourlyWage);
            Assert.AreEqual("key2", result[1].Key);
            Assert.AreEqual(2, result[1].Value.HourlyWage);
        }

        [Test]
        public void StringListAppenderConverterTest()
        {
            Movie p = new Movie();
            p.ReleaseCountries = new List<string> { "Existing" };

            JsonConvert.PopulateObject("{'ReleaseCountries':['Appended']}", p, new JsonSerializerSettings
            {
                Converters = new List<JsonConverter> { new StringListAppenderConverter() }
            });

            Assert.AreEqual(2, p.ReleaseCountries.Count);
            Assert.AreEqual("Existing", p.ReleaseCountries[0]);
            Assert.AreEqual("Appended", p.ReleaseCountries[1]);
        }

        [Test]
        public void StringAppenderConverterTest()
        {
            Movie p = new Movie();
            p.Name = "Existing,";

            JsonConvert.PopulateObject("{'Name':'Appended'}", p, new JsonSerializerSettings
            {
                Converters = new List<JsonConverter> { new StringAppenderConverter() }
            });

            Assert.AreEqual("Existing,Appended", p.Name);
        }

        [Test]
        public void DeserializeIDictionary()
        {
            IDictionary dictionary = JsonConvert.DeserializeObject<IDictionary>("{'name':'value!'}");
            Assert.AreEqual(1, dictionary.Count);
            Assert.AreEqual("value!", dictionary["name"]);
        }

        [Test]
        public void DeserializeIList()
        {
            IList list = JsonConvert.DeserializeObject<IList>("['1', 'two', 'III']");
            Assert.AreEqual(3, list.Count);
        }

        [Test]
        public void NullableValueGenericDictionary()
        {
            IDictionary<string, int?> v1 = new Dictionary<string, int?>
            {
                { "First", 1 },
                { "Second", null },
                { "Third", 3 }
            };

            string json = JsonConvert.SerializeObject(v1, Formatting.Indented);

            StringAssert.AreEqual(@"{
  ""First"": 1,
  ""Second"": null,
  ""Third"": 3
}", json);

            IDictionary<string, int?> v2 = JsonConvert.DeserializeObject<IDictionary<string, int?>>(json);
            Assert.AreEqual(3, v2.Count);
            Assert.AreEqual(1, v2["First"]);
            Assert.AreEqual(null, v2["Second"]);
            Assert.AreEqual(3, v2["Third"]);
        }

#if !(NET35 || NET20 || PORTABLE || PORTABLE40)
        [Test]
        public void DeserializeConcurrentDictionary()
        {
            IDictionary<string, TestObjects.Component> components = new Dictionary<string, TestObjects.Component>
            {
                { "Key!", new TestObjects.Component() }
            };
            GameObject go = new GameObject
            {
                Components = new ConcurrentDictionary<string, TestObjects.Component>(components),
                Id = "Id!",
                Name = "Name!"
            };

            string originalJson = JsonConvert.SerializeObject(go, Formatting.Indented);

            StringAssert.AreEqual(@"{
  ""Components"": {
    ""Key!"": {}
  },
  ""Id"": ""Id!"",
  ""Name"": ""Name!""
}", originalJson);

            GameObject newObject = JsonConvert.DeserializeObject<GameObject>(originalJson);

            Assert.AreEqual(1, newObject.Components.Count);
            Assert.AreEqual("Id!", newObject.Id);
            Assert.AreEqual("Name!", newObject.Name);
        }
#endif

        [Test]
        public void DeserializeKeyValuePairArray()
        {
            string json = @"[ { ""Value"": [ ""1"", ""2"" ], ""Key"": ""aaa"", ""BadContent"": [ 0 ] }, { ""Value"": [ ""3"", ""4"" ], ""Key"": ""bbb"" } ]";

            IList<KeyValuePair<string, IList<string>>> values = JsonConvert.DeserializeObject<IList<KeyValuePair<string, IList<string>>>>(json);

            Assert.AreEqual(2, values.Count);
            Assert.AreEqual("aaa", values[0].Key);
            Assert.AreEqual(2, values[0].Value.Count);
            Assert.AreEqual("1", values[0].Value[0]);
            Assert.AreEqual("2", values[0].Value[1]);
            Assert.AreEqual("bbb", values[1].Key);
            Assert.AreEqual(2, values[1].Value.Count);
            Assert.AreEqual("3", values[1].Value[0]);
            Assert.AreEqual("4", values[1].Value[1]);
        }

        [Test]
        public void DeserializeNullableKeyValuePairArray()
        {
            string json = @"[ { ""Value"": [ ""1"", ""2"" ], ""Key"": ""aaa"", ""BadContent"": [ 0 ] }, null, { ""Value"": [ ""3"", ""4"" ], ""Key"": ""bbb"" } ]";

            IList<KeyValuePair<string, IList<string>>?> values = JsonConvert.DeserializeObject<IList<KeyValuePair<string, IList<string>>?>>(json);

            Assert.AreEqual(3, values.Count);
            Assert.AreEqual("aaa", values[0].Value.Key);
            Assert.AreEqual(2, values[0].Value.Value.Count);
            Assert.AreEqual("1", values[0].Value.Value[0]);
            Assert.AreEqual("2", values[0].Value.Value[1]);
            Assert.AreEqual(null, values[1]);
            Assert.AreEqual("bbb", values[2].Value.Key);
            Assert.AreEqual(2, values[2].Value.Value.Count);
            Assert.AreEqual("3", values[2].Value.Value[0]);
            Assert.AreEqual("4", values[2].Value.Value[1]);
        }

        [Test]
        public void DeserializeNullToNonNullableKeyValuePairArray()
        {
            string json = @"[ null ]";

            ExceptionAssert.Throws<JsonSerializationException>(() => { JsonConvert.DeserializeObject<IList<KeyValuePair<string, IList<string>>>>(json); }, "Cannot convert null value to KeyValuePair. Path '[0]', line 1, position 6.");
        }

#if !(NET40 || NET35 || NET20 || PORTABLE40)
        public class PopulateReadOnlyTestClass
        {
            public IList<int> NonReadOnlyList { get; set; }
            public IDictionary<string, int> NonReadOnlyDictionary { get; set; }

            public IList<int> Array { get; set; }

            public IList<int> List { get; set; }
            public IDictionary<string, int> Dictionary { get; set; }

            public IReadOnlyCollection<int> IReadOnlyCollection { get; set; }
            public ReadOnlyCollection<int> ReadOnlyCollection { get; set; }
            public IReadOnlyList<int> IReadOnlyList { get; set; }

            public IReadOnlyDictionary<string, int> IReadOnlyDictionary { get; set; }
            public ReadOnlyDictionary<string, int> ReadOnlyDictionary { get; set; }

            public PopulateReadOnlyTestClass()
            {
                NonReadOnlyList = new List<int> { 1 };
                NonReadOnlyDictionary = new Dictionary<string, int> { { "first", 2 } };

                Array = new[] { 3 };

                List = new ReadOnlyCollection<int>(new[] { 4 });
                Dictionary = new ReadOnlyDictionary<string, int>(new Dictionary<string, int> { { "first", 5 } });

                IReadOnlyCollection = new ReadOnlyCollection<int>(new[] { 6 });
                ReadOnlyCollection = new ReadOnlyCollection<int>(new[] { 7 });
                IReadOnlyList = new ReadOnlyCollection<int>(new[] { 8 });

                IReadOnlyDictionary = new ReadOnlyDictionary<string, int>(new Dictionary<string, int> { { "first", 9 } });
                ReadOnlyDictionary = new ReadOnlyDictionary<string, int>(new Dictionary<string, int> { { "first", 10 } });
            }
        }

        [Test]
        public void SerializeReadOnlyCollections()
        {
            PopulateReadOnlyTestClass c1 = new PopulateReadOnlyTestClass();

            string json = JsonConvert.SerializeObject(c1, Formatting.Indented);

            StringAssert.AreEqual(@"{
  ""NonReadOnlyList"": [
    1
  ],
  ""NonReadOnlyDictionary"": {
    ""first"": 2
  },
  ""Array"": [
    3
  ],
  ""List"": [
    4
  ],
  ""Dictionary"": {
    ""first"": 5
  },
  ""IReadOnlyCollection"": [
    6
  ],
  ""ReadOnlyCollection"": [
    7
  ],
  ""IReadOnlyList"": [
    8
  ],
  ""IReadOnlyDictionary"": {
    ""first"": 9
  },
  ""ReadOnlyDictionary"": {
    ""first"": 10
  }
}", json);
        }

        [Test]
        public void PopulateReadOnlyCollections()
        {
            string json = @"{
  ""NonReadOnlyList"": [
    11
  ],
  ""NonReadOnlyDictionary"": {
    ""first"": 12
  },
  ""Array"": [
    13
  ],
  ""List"": [
    14
  ],
  ""Dictionary"": {
    ""first"": 15
  },
  ""IReadOnlyCollection"": [
    16
  ],
  ""ReadOnlyCollection"": [
    17
  ],
  ""IReadOnlyList"": [
    18
  ],
  ""IReadOnlyDictionary"": {
    ""first"": 19
  },
  ""ReadOnlyDictionary"": {
    ""first"": 20
  }
}";

            var c2 = JsonConvert.DeserializeObject<PopulateReadOnlyTestClass>(json);

            Assert.AreEqual(1, c2.NonReadOnlyDictionary.Count);
            Assert.AreEqual(12, c2.NonReadOnlyDictionary["first"]);

            Assert.AreEqual(2, c2.NonReadOnlyList.Count);
            Assert.AreEqual(1, c2.NonReadOnlyList[0]);
            Assert.AreEqual(11, c2.NonReadOnlyList[1]);

            Assert.AreEqual(1, c2.Array.Count);
            Assert.AreEqual(13, c2.Array[0]);
        }
#endif

        [Test]
        public void SerializeArray2D()
        {
            Array2D aa = new Array2D();
            aa.Before = "Before!";
            aa.After = "After!";
            aa.Coordinates = new[,] { { 1, 1 }, { 1, 2 }, { 2, 1 }, { 2, 2 } };

            string json = JsonConvert.SerializeObject(aa);

            Assert.AreEqual(@"{""Before"":""Before!"",""Coordinates"":[[1,1],[1,2],[2,1],[2,2]],""After"":""After!""}", json);
        }

        [Test]
        public void SerializeArray3D()
        {
            Array3D aa = new Array3D();
            aa.Before = "Before!";
            aa.After = "After!";
            aa.Coordinates = new[,,] { { { 1, 1, 1 }, { 1, 1, 2 } }, { { 1, 2, 1 }, { 1, 2, 2 } }, { { 2, 1, 1 }, { 2, 1, 2 } }, { { 2, 2, 1 }, { 2, 2, 2 } } };

            string json = JsonConvert.SerializeObject(aa);

            Assert.AreEqual(@"{""Before"":""Before!"",""Coordinates"":[[[1,1,1],[1,1,2]],[[1,2,1],[1,2,2]],[[2,1,1],[2,1,2]],[[2,2,1],[2,2,2]]],""After"":""After!""}", json);
        }

        [Test]
        public void SerializeArray3DWithConverter()
        {
            Array3DWithConverter aa = new Array3DWithConverter();
            aa.Before = "Before!";
            aa.After = "After!";
            aa.Coordinates = new[,,] { { { 1, 1, 1 }, { 1, 1, 2 } }, { { 1, 2, 1 }, { 1, 2, 2 } }, { { 2, 1, 1 }, { 2, 1, 2 } }, { { 2, 2, 1 }, { 2, 2, 2 } } };

            string json = JsonConvert.SerializeObject(aa, Formatting.Indented);

            StringAssert.AreEqual(@"{
  ""Before"": ""Before!"",
  ""Coordinates"": [
    [
      [
        1.0,
        1.0,
        1.0
      ],
      [
        1.0,
        1.0,
        2.0
      ]
    ],
    [
      [
        1.0,
        2.0,
        1.0
      ],
      [
        1.0,
        2.0,
        2.0
      ]
    ],
    [
      [
        2.0,
        1.0,
        1.0
      ],
      [
        2.0,
        1.0,
        2.0
      ]
    ],
    [
      [
        2.0,
        2.0,
        1.0
      ],
      [
        2.0,
        2.0,
        2.0
      ]
    ]
  ],
  ""After"": ""After!""
}", json);
        }

        [Test]
        public void DeserializeArray3DWithConverter()
        {
            string json = @"{
  ""Before"": ""Before!"",
  ""Coordinates"": [
    [
      [
        1.0,
        1.0,
        1.0
      ],
      [
        1.0,
        1.0,
        2.0
      ]
    ],
    [
      [
        1.0,
        2.0,
        1.0
      ],
      [
        1.0,
        2.0,
        2.0
      ]
    ],
    [
      [
        2.0,
        1.0,
        1.0
      ],
      [
        2.0,
        1.0,
        2.0
      ]
    ],
    [
      [
        2.0,
        2.0,
        1.0
      ],
      [
        2.0,
        2.0,
        2.0
      ]
    ]
  ],
  ""After"": ""After!""
}";

            Array3DWithConverter aa = JsonConvert.DeserializeObject<Array3DWithConverter>(json);

            Assert.AreEqual("Before!", aa.Before);
            Assert.AreEqual("After!", aa.After);
            Assert.AreEqual(4, aa.Coordinates.GetLength(0));
            Assert.AreEqual(2, aa.Coordinates.GetLength(1));
            Assert.AreEqual(3, aa.Coordinates.GetLength(2));
            Assert.AreEqual(1, aa.Coordinates[0, 0, 0]);
            Assert.AreEqual(2, aa.Coordinates[1, 1, 1]);
        }

        [Test]
        public void DeserializeArray2D()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[[1,1],[1,2],[2,1],[2,2]],""After"":""After!""}";

            Array2D aa = JsonConvert.DeserializeObject<Array2D>(json);

            Assert.AreEqual("Before!", aa.Before);
            Assert.AreEqual("After!", aa.After);
            Assert.AreEqual(4, aa.Coordinates.GetLength(0));
            Assert.AreEqual(2, aa.Coordinates.GetLength(1));
            Assert.AreEqual(1, aa.Coordinates[0, 0]);
            Assert.AreEqual(2, aa.Coordinates[1, 1]);

            string after = JsonConvert.SerializeObject(aa);

            Assert.AreEqual(json, after);
        }

        [Test]
        public void DeserializeArray2D_WithTooManyItems()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[[1,1],[1,2,3],[2,1],[2,2]],""After"":""After!""}";

            ExceptionAssert.Throws<Exception>(() => JsonConvert.DeserializeObject<Array2D>(json), "Cannot deserialize non-cubical array as multidimensional array.");
        }

        [Test]
        public void DeserializeArray2D_WithTooFewItems()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[[1,1],[1],[2,1],[2,2]],""After"":""After!""}";

            ExceptionAssert.Throws<Exception>(() => JsonConvert.DeserializeObject<Array2D>(json), "Cannot deserialize non-cubical array as multidimensional array.");
        }

        [Test]
        public void DeserializeArray3D()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[[[1,1,1],[1,1,2]],[[1,2,1],[1,2,2]],[[2,1,1],[2,1,2]],[[2,2,1],[2,2,2]]],""After"":""After!""}";

            Array3D aa = JsonConvert.DeserializeObject<Array3D>(json);

            Assert.AreEqual("Before!", aa.Before);
            Assert.AreEqual("After!", aa.After);
            Assert.AreEqual(4, aa.Coordinates.GetLength(0));
            Assert.AreEqual(2, aa.Coordinates.GetLength(1));
            Assert.AreEqual(3, aa.Coordinates.GetLength(2));
            Assert.AreEqual(1, aa.Coordinates[0, 0, 0]);
            Assert.AreEqual(2, aa.Coordinates[1, 1, 1]);

            string after = JsonConvert.SerializeObject(aa);

            Assert.AreEqual(json, after);
        }

        [Test]
        public void DeserializeArray3D_WithTooManyItems()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[[[1,1,1],[1,1,2,1]],[[1,2,1],[1,2,2]],[[2,1,1],[2,1,2]],[[2,2,1],[2,2,2]]],""After"":""After!""}";

            ExceptionAssert.Throws<Exception>(() => JsonConvert.DeserializeObject<Array3D>(json), "Cannot deserialize non-cubical array as multidimensional array.");
        }

        [Test]
        public void DeserializeArray3D_WithBadItems()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[[[1,1,1],[1,1,2]],[[1,2,1],[1,2,2]],[[2,1,1],[2,1,2]],[[2,2,1],{}]],""After"":""After!""}";

            ExceptionAssert.Throws<JsonSerializationException>(() => JsonConvert.DeserializeObject<Array3D>(json), "Unexpected token when deserializing multidimensional array: StartObject. Path 'Coordinates[3][1]', line 1, position 99.");
        }

        [Test]
        public void DeserializeArray3D_WithTooFewItems()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[[[1,1,1],[1,1]],[[1,2,1],[1,2,2]],[[2,1,1],[2,1,2]],[[2,2,1],[2,2,2]]],""After"":""After!""}";

            ExceptionAssert.Throws<Exception>(() => JsonConvert.DeserializeObject<Array3D>(json), "Cannot deserialize non-cubical array as multidimensional array.");
        }

        [Test]
        public void SerializeEmpty3DArray()
        {
            Array3D aa = new Array3D();
            aa.Before = "Before!";
            aa.After = "After!";
            aa.Coordinates = new int[0, 0, 0];

            string json = JsonConvert.SerializeObject(aa);

            Assert.AreEqual(@"{""Before"":""Before!"",""Coordinates"":[],""After"":""After!""}", json);
        }

        [Test]
        public void DeserializeEmpty3DArray()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[],""After"":""After!""}";

            Array3D aa = JsonConvert.DeserializeObject<Array3D>(json);

            Assert.AreEqual("Before!", aa.Before);
            Assert.AreEqual("After!", aa.After);
            Assert.AreEqual(0, aa.Coordinates.GetLength(0));
            Assert.AreEqual(0, aa.Coordinates.GetLength(1));
            Assert.AreEqual(0, aa.Coordinates.GetLength(2));

            string after = JsonConvert.SerializeObject(aa);

            Assert.AreEqual(json, after);
        }

        [Test]
        public void DeserializeIncomplete3DArray()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[/*hi*/[/*hi*/[1/*hi*/,/*hi*/1/*hi*/,1]/*hi*/,/*hi*/[1,1";

            ExceptionAssert.Throws<JsonException>(() => JsonConvert.DeserializeObject<Array3D>(json));
        }

        [Test]
        public void DeserializeIncompleteNotTopLevel3DArray()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[/*hi*/[/*hi*/";

            ExceptionAssert.Throws<JsonException>(() => JsonConvert.DeserializeObject<Array3D>(json));
        }

        [Test]
        public void DeserializeNull3DArray()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":null,""After"":""After!""}";

            Array3D aa = JsonConvert.DeserializeObject<Array3D>(json);

            Assert.AreEqual("Before!", aa.Before);
            Assert.AreEqual("After!", aa.After);
            Assert.AreEqual(null, aa.Coordinates);

            string after = JsonConvert.SerializeObject(aa);

            Assert.AreEqual(json, after);
        }

        [Test]
        public void DeserializeSemiEmpty3DArray()
        {
            string json = @"{""Before"":""Before!"",""Coordinates"":[[]],""After"":""After!""}";

            Array3D aa = JsonConvert.DeserializeObject<Array3D>(json);

            Assert.AreEqual("Before!", aa.Before);
            Assert.AreEqual("After!", aa.After);
            Assert.AreEqual(1, aa.Coordinates.GetLength(0));
            Assert.AreEqual(0, aa.Coordinates.GetLength(1));
            Assert.AreEqual(0, aa.Coordinates.GetLength(2));

            string after = JsonConvert.SerializeObject(aa);

            Assert.AreEqual(json, after);
        }

        [Test]
        public void SerializeReferenceTracked3DArray()
        {
            Event1 e1 = new Event1
            {
                EventName = "EventName!"
            };
            Event1[,] array1 = new[,] { { e1, e1 }, { e1, e1 } };
            IList<Event1[,]> values1 = new List<Event1[,]>
            {
                array1,
                array1
            };

            string json = JsonConvert.SerializeObject(values1, new JsonSerializerSettings
            {
                PreserveReferencesHandling = PreserveReferencesHandling.All,
                Formatting = Formatting.Indented
            });

            StringAssert.AreEqual(@"{
  ""$id"": ""1"",
  ""$values"": [
    {
      ""$id"": ""2"",
      ""$values"": [
        [
          {
            ""$id"": "…