public void WritePolymorphicObject(DiscriminatorPolicy discriminatorPolicy, string expected)
{
JsonSerializerOptions options = new JsonSerializerOptions();
options.SetupExtensions();
DiscriminatorConventionRegistry registry = options.GetDiscriminatorConventionRegistry();
registry.ClearConventions();
registry.RegisterConvention(new DefaultDiscriminatorConvention <int>(options));
registry.RegisterType <NameObject>();
registry.DiscriminatorPolicy = discriminatorPolicy;
BaseObjectHolder obj = new BaseObjectHolder
{
BaseObject = new NameObject
{
Id = 1,
Name = "foo"
},
NameObject = new NameObject
{
Id = 2,
Name = "bar"
}
};
string actual = JsonSerializer.Serialize(obj, options);
Assert.Equal(expected, actual);
}
public void ReadWithCustomDiscriminator()
{
JsonSerializerOptions options = new JsonSerializerOptions();
options.SetupExtensions();
DiscriminatorConventionRegistry registry = options.GetDiscriminatorConventionRegistry();
registry.RegisterConvention(new CustomDiscriminatorConvention());
registry.RegisterType(typeof(NameObject));
const string json = @"{""BaseObject"":{""type"":571690115,""Name"":""foo"",""Id"":1}}";
BaseObjectHolder obj = JsonSerializer.Deserialize <BaseObjectHolder>(json, options);
Assert.NotNull(obj);
Assert.IsType <NameObject>(obj.BaseObject);
Assert.Equal("foo", ((NameObject)obj.BaseObject).Name);
Assert.Equal(1, obj.BaseObject.Id);
}
public void ReadPolymorphicObject()
{
const string json = @"{""BaseObject"":{""$type"":12,""Name"":""foo"",""Id"":1}}";
JsonSerializerOptions options = new JsonSerializerOptions();
options.SetupExtensions();
DiscriminatorConventionRegistry registry = options.GetDiscriminatorConventionRegistry();
registry.RegisterConvention(new AttributeBasedDiscriminatorConvention <int>(options));
registry.RegisterType <NameObject>();
BaseObjectHolder obj = JsonSerializer.Deserialize <BaseObjectHolder>(json, options);
Assert.NotNull(obj);
Assert.IsType <NameObject>(obj.BaseObject);
Assert.Equal("foo", ((NameObject)obj.BaseObject).Name);
Assert.Equal(1, obj.BaseObject.Id);
}
public void ReadPolymorphicObjectWithDeferredTypeProperty()
{
const string json = @"{""BaseObject"":{""Name"":""foo"",""Id"":1,""Unknown"":{""Prop1"":12,""Prop2"":""bar""},""$type"":12}}";
JsonSerializerOptions options = new JsonSerializerOptions();
options.SetupExtensions();
DiscriminatorConventionRegistry registry = options.GetDiscriminatorConventionRegistry();
registry.ClearConventions();
registry.RegisterConvention(new DefaultDiscriminatorConvention <int>(options));
registry.RegisterType <NameObject>();
BaseObjectHolder obj = JsonSerializer.Deserialize <BaseObjectHolder>(json, options);
Assert.NotNull(obj);
NameObject nameObject = Assert.IsType <NameObject>(obj.BaseObject);
Assert.Equal("foo", nameObject.Name);
Assert.Equal(1, nameObject.Id);
}
public void WriteWithCustomDiscriminator()
{
JsonSerializerOptions options = new JsonSerializerOptions();
options.SetupExtensions();
DiscriminatorConventionRegistry registry = options.GetDiscriminatorConventionRegistry();
registry.RegisterConvention(new CustomDiscriminatorConvention());
registry.RegisterType(typeof(NameObject));
BaseObjectHolder obj = new BaseObjectHolder
{
BaseObject = new NameObject
{
Id = 1,
Name = "foo"
},
};
string actual = JsonSerializer.Serialize(obj, options);
const string expected = @"{""BaseObject"":{""type"":571690115,""Name"":""foo"",""Id"":1},""NameObject"":null}";
Assert.Equal(expected, actual);
}