squidex/backend/tests/Squidex.Infrastructure.Tests/Json/Newtonsoft/ConverterContractResolverTests.cs

// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschränkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using NodaTime;
using Squidex.Infrastructure.TestHelpers;
using Xunit;

namespace Squidex.Infrastructure.Json.Newtonsoft
{
    public class ConverterContractResolverTests
    {
        public class MyClass
        {
            [JsonConverter(typeof(TodayConverter))]
            public Instant MyProperty { get; set; }
        }

        public sealed class TodayConverter : JsonConverter
        {
            public override void WriteJson(JsonWriter writer, object? value, JsonSerializer serializer)
            {
                writer.WriteValue("TODAY");
            }

            public override object ReadJson(JsonReader reader, Type objectType, object? existingValue, JsonSerializer serializer)
            {
                throw new NotSupportedException();
            }

            public override bool CanConvert(Type objectType)
            {
                return objectType == typeof(Instant);
            }
        }

        [Fact]
        public void Should_respect_property_converter()
        {
            var value = Instant.FromUtc(2012, 12, 10, 9, 8, 45);

            var serializerSettings = new JsonSerializerSettings
            {
                ContractResolver = new ConverterContractResolver(new InstantConverter())
            };

            var json = JsonConvert.SerializeObject(new MyClass { MyProperty = value }, serializerSettings);

            Assert.Equal(@"{""myProperty"":""TODAY""}", json);
        }

        [Fact]
        public void Should_ignore_other_converters()
        {
            var value = Instant.FromUtc(2012, 12, 10, 9, 8, 45);

            var serializerSettings = new JsonSerializerSettings
            {
                ContractResolver = new ConverterContractResolver(new InstantConverter())
            };

            serializerSettings.Converters.Add(new TodayConverter());

            var result = JsonConvert.SerializeObject(Tuple.Create(value), serializerSettings);
            var output = JsonConvert.DeserializeObject<Tuple<Instant>>(result, serializerSettings)!;

            Assert.Equal(value, output.Item1);
        }

        [Fact]
        public void Should_serialize_and_deserialize_instant()
        {
            var value = Instant.FromUtc(2012, 12, 10, 9, 8, 45);

            var serialized = value.SerializeAndDeserialize();

            Assert.Equal(value, serialized);
        }

        [Fact]
        public void Should_serialize_and_deserialize_dictionary()
        {
            var value = new Dictionary<string, string> { ["Description"] = "value" };

            var serialized = value.SerializeAndDeserialize();

            Assert.Equal(value, serialized);
        }
    }
}