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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| using System; | ||
| using System.Linq; | ||
| using System.Reflection; | ||
| using Newtonsoft.Json; | ||
| using Newtonsoft.Json.Linq; | ||
| using Xunit; | ||
|
|
||
| namespace LanguageExt.Tests | ||
| { | ||
| public partial class UnionCustomJsonSerializerTests | ||
| { | ||
| [Union] | ||
| [MyUnion] | ||
| abstract partial class UnionTestClass | ||
| { | ||
| public abstract UnionTestClass A(); | ||
| public abstract UnionTestClass B(int i); | ||
| public abstract UnionTestClass C(int i); | ||
| public abstract UnionTestClass D(int i, int j); | ||
| } | ||
|
|
||
| [AttributeUsage(AttributeTargets.Class, Inherited = false)] | ||
| public class MyUnionAttribute : Attribute | ||
| { | ||
| } | ||
|
|
||
| public class UnionJsonReadConverter : JsonConverter | ||
| { | ||
| public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) => throw new NotImplementedException(); | ||
|
|
||
| public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) | ||
| { | ||
| string typeName = null; | ||
| JObject typeValueToken = null; | ||
| if (reader.TokenType != JsonToken.StartObject) throw new Exception(); | ||
| while (reader.Read()) | ||
| { | ||
| if (reader.TokenType == JsonToken.EndObject) break; | ||
| if (reader.TokenType != JsonToken.PropertyName) throw new Exception(); | ||
| if ((string) reader.Value == "Type") | ||
| { | ||
| if (!reader.Read()) throw new Exception(); | ||
| if (typeName != null) throw new Exception(); | ||
| if (reader.TokenType != JsonToken.String) throw new Exception(); | ||
| typeName = (string) reader.Value; | ||
| } | ||
| else if ((string) reader.Value == "Value") | ||
| { | ||
| if (typeValueToken != null) throw new Exception(); | ||
| if (!reader.Read()) throw new Exception(); | ||
| if (reader.TokenType != JsonToken.StartObject) throw new Exception(); | ||
| typeValueToken = JObject.Load(reader); | ||
| } | ||
| } | ||
|
|
||
| var type = objectType.Assembly.GetTypes().Where(_ => objectType.IsAssignableFrom(_) && _.Name == typeName).Single(); | ||
| var result = typeValueToken.ToObject(type, serializer); | ||
| return result; | ||
| } | ||
|
|
||
| public override bool CanWrite => false; | ||
| public override bool CanConvert(Type objectType) => objectType.IsClass && objectType.GetCustomAttribute<MyUnionAttribute>() != null; | ||
| } | ||
|
|
||
| public class UnionJsonWriteConverter : JsonConverter | ||
| { | ||
| public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) | ||
| { | ||
| var t = value.GetType(); | ||
| writer.WriteStartObject(); | ||
| writer.WritePropertyName("Type"); | ||
| writer.WriteValue(t.Name); | ||
| writer.WritePropertyName("Value"); | ||
| writer.WriteStartObject(); | ||
| foreach (var fieldInfo in t.GetFields(BindingFlags.Instance | BindingFlags.Public)) | ||
| { | ||
| writer.WritePropertyName(fieldInfo.Name); | ||
| serializer.Serialize(writer, fieldInfo.GetValue(value)); | ||
| } | ||
| writer.WriteEndObject(); | ||
| writer.WriteEndObject(); | ||
| } | ||
|
|
||
| public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) => | ||
| new NotImplementedException(); | ||
|
|
||
| public override bool CanRead => false; | ||
|
|
||
| public override bool CanConvert(Type objectType) => objectType.IsClass && objectType.BaseType?.BaseType?.GetCustomAttribute<MyUnionAttribute>() != null; | ||
| } | ||
|
|
||
| [Fact] | ||
| public void UnionFromJson() | ||
| { | ||
| var json = @"{""Type"":""B"",""Value"":{""I"":42}}"; | ||
| var x = JsonConvert.DeserializeObject<UnionTestClass>(json, new UnionJsonReadConverter()) as B; | ||
| Assert.Equal(42, x?.I); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void UnionToJson() | ||
| { | ||
| var x = JsonConvert.SerializeObject(UnionTestClassCon.B(42), new UnionJsonWriteConverter()); | ||
| Assert.Equal(@"{""Type"":""B"",""Value"":{""I"":42}}", x); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| using System.Runtime.Serialization; | ||
| using Newtonsoft.Json; | ||
| using Xunit; | ||
|
|
||
| namespace LanguageExt.Tests | ||
| { | ||
| public partial class UnionJsonSerializerTests | ||
| { | ||
| [Union] | ||
| public abstract partial class LightControl | ||
| { | ||
| public abstract LightControl OnOff(bool enabled); | ||
| public abstract LightControl Dimmer(int value); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void UnionInstanceFromJson() | ||
| { | ||
| var json = @"{""Value"":100}"; | ||
| var x = JsonConvert.DeserializeObject<Dimmer>(json); | ||
| Assert.Equal(100, x.Value); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void UnionInstanceToJson() | ||
| { | ||
| Assert.Equal(@"{""Value"":100}", JsonConvert.SerializeObject(LightControlCon.Dimmer(100))); | ||
| } | ||
|
|
||
| [Fact] | ||
| public void UnionRoundTrip() | ||
| { | ||
| Assert.Equal(LightControlCon.OnOff(true), JsonConvert.DeserializeObject<OnOff>(JsonConvert.SerializeObject(LightControlCon.OnOff(true)))); | ||
| Assert.Equal(LightControlCon.OnOff(false), JsonConvert.DeserializeObject<OnOff>(JsonConvert.SerializeObject(LightControlCon.OnOff(false)))); | ||
| Assert.Equal(LightControlCon.Dimmer(10), JsonConvert.DeserializeObject<Dimmer>(JsonConvert.SerializeObject(LightControlCon.Dimmer(10)))); | ||
| Assert.Equal(LightControlCon.Dimmer(90), JsonConvert.DeserializeObject<Dimmer>(JsonConvert.SerializeObject(LightControlCon.Dimmer(90)))); | ||
|
|
||
| } | ||
| } | ||
| } |
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