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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NUnit.Framework;
using Newtonsoft.Json.Serialization;
using Newtonsoft.Json.Tests.TestObjects;
using System.Reflection;
namespace Newtonsoft.Json.Tests.Serialization
{
public class DynamicContractResolver : DefaultContractResolver
{
private readonly char _startingWithChar;
public DynamicContractResolver(char startingWithChar)
: base(false)
{
_startingWithChar = startingWithChar;
}
protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
{
IList<JsonProperty> properties = base.CreateProperties(type, memberSerialization);
// only serializer properties that start with the specified character
properties =
properties.Where(p => p.PropertyName.StartsWith(_startingWithChar.ToString())).ToList();
return properties;
}
}
public class Book
{
public string BookName { get; set; }
public decimal BookPrice { get; set; }
public string AuthorName { get; set; }
public int AuthorAge { get; set; }
public string AuthorCountry { get; set; }
}
public class IPersonContractResolver : DefaultContractResolver
{
protected override JsonContract CreateContract(Type objectType)
{
if (objectType == typeof(Employee))
objectType = typeof(IPerson);
return base.CreateContract(objectType);
}
}
public class ContractResolverTests : TestFixtureBase
{
[Test]
public void SerializeInterface()
{
Employee employee = new Employee
{
BirthDate = new DateTime(1977, 12, 30, 1, 1, 1, DateTimeKind.Utc),
FirstName = "Maurice",
LastName = "Moss",
Department = "IT",
JobTitle = "Support"
};
string iPersonJson = JsonConvert.SerializeObject(employee, Formatting.Indented,
new JsonSerializerSettings { ContractResolver = new IPersonContractResolver() });
Assert.AreEqual(@"{
""FirstName"": ""Maurice"",
""LastName"": ""Moss"",
""BirthDate"": ""1977-12-30T01:01:01Z""
}", iPersonJson);
}
[Test]
public void SingleTypeWithMultipleContractResolvers()
{
Book book = new Book
{
BookName = "The Gathering Storm",
BookPrice = 16.19m,
AuthorName = "Brandon Sanderson",
AuthorAge = 34,
AuthorCountry = "United States of America"
};
string startingWithA = JsonConvert.SerializeObject(book, Formatting.Indented,
new JsonSerializerSettings { ContractResolver = new DynamicContractResolver('A') });
// {
// "AuthorName": "Brandon Sanderson",
// "AuthorAge": 34,
// "AuthorCountry": "United States of America"
// }
string startingWithB = JsonConvert.SerializeObject(book, Formatting.Indented,
new JsonSerializerSettings { ContractResolver = new DynamicContractResolver('B') });
// {
// "BookName": "The Gathering Storm",
// "BookPrice": 16.19
// }
Assert.AreEqual(@"{
""AuthorName"": ""Brandon Sanderson"",
""AuthorAge"": 34,
""AuthorCountry"": ""United States of America""
}", startingWithA);
Assert.AreEqual(@"{
""BookName"": ""The Gathering Storm"",
""BookPrice"": 16.19
}", startingWithB);
}
[Test]
public void SerializeCompilerGeneratedMembers()
{
StructTest structTest = new StructTest
{
IntField = 1,
IntProperty = 2,
StringField = "Field",
StringProperty = "Property"
};
DefaultContractResolver skipCompilerGeneratedResolver = new DefaultContractResolver
{
DefaultMembersSearchFlags = BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public
};
string skipCompilerGeneratedJson = JsonConvert.SerializeObject(structTest, Formatting.Indented,
new JsonSerializerSettings { ContractResolver = skipCompilerGeneratedResolver });
Assert.AreEqual(@"{
""StringField"": ""Field"",
""IntField"": 1,
""StringProperty"": ""Property"",
""IntProperty"": 2
}", skipCompilerGeneratedJson);
DefaultContractResolver includeCompilerGeneratedResolver = new DefaultContractResolver
{
DefaultMembersSearchFlags = BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public,
SerializeCompilerGeneratedMembers = true
};
string includeCompilerGeneratedJson = JsonConvert.SerializeObject(structTest, Formatting.Indented,
new JsonSerializerSettings { ContractResolver = includeCompilerGeneratedResolver });
Assert.AreEqual(@"{
""StringField"": ""Field"",
""IntField"": 1,
""<StringProperty>k__BackingField"": ""Property"",
""<IntProperty>k__BackingField"": 2,
""StringProperty"": ""Property"",
""IntProperty"": 2
}", includeCompilerGeneratedJson);
}
}
}
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