Feature/geo json (#619)

* Reduce allocations in visitors.

* Geojson.

* Build fixes (Tests pending).

* More fixes.

* Geojson support for geolocation fields.

backend/src/Squidex.Domain.Apps.Core.Operations/ConvertContent/FieldConverters.cs

@@ -13,6 +13,7 @@ using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Domain.Apps.Core.Schemas;
 using Squidex.Domain.Apps.Core.ValidateContent;
 using Squidex.Infrastructure;
+using Squidex.Infrastructure.Json;
 using Squidex.Infrastructure.Json.Objects;
 
 namespace Squidex.Domain.Apps.Core.ConvertContent
@@ -28,32 +29,35 @@ namespace Squidex.Domain.Apps.Core.ConvertContent
             return field.IsForApi() ? data : null;
         };
 
-        public static readonly FieldConverter ExcludeChangedTypes = (data, field) =>
+        public static FieldConverter ExcludeChangedTypes(IJsonSerializer jsonSerializer)
         {
-            foreach (var value in data.Values)
+            return (data, field) =>
             {
-                if (value.Type == JsonValueType.Null)
+                foreach (var value in data.Values)
                 {
-                    continue;
-                }
+                    if (value.Type == JsonValueType.Null)
+                    {
+                        continue;
+                    }
 
-                try
-                {
-                    var (_, error) = JsonValueConverter.ConvertValue(field, value);
+                    try
+                    {
+                        var (_, error) = JsonValueConverter.ConvertValue(field, value, jsonSerializer);
 
-                    if (error != null)
+                        if (error != null)
+                        {
+                            return null;
+                        }
+                    }
+                    catch
                     {
                         return null;
                     }
                 }
-                catch
-                {
-                    return null;
-                }
-            }
 
-            return data;
-        };
+                return data;
+            };
+        }
 
         public static FieldConverter ResolveInvariant(LanguagesConfig languages)
         {

backend/src/Squidex.Domain.Apps.Core.Operations/ConvertContent/ValueConverters.cs

@@ -28,29 +28,32 @@ namespace Squidex.Domain.Apps.Core.ConvertContent
             return field.IsForApi() ? value : null;
         };
 
-        public static readonly ValueConverter ExcludeChangedTypes = (value, field, parent) =>
+        public static ValueConverter ExcludeChangedTypes(IJsonSerializer jsonSerializer)
         {
-            if (value.Type == JsonValueType.Null)
+            return (value, field, parent) =>
             {
-                return value;
-            }
+                if (value.Type == JsonValueType.Null)
+                {
+                    return value;
+                }
 
-            try
-            {
-                var (_, error) = JsonValueConverter.ConvertValue(field, value);
+                try
+                {
+                    var (_, error) = JsonValueConverter.ConvertValue(field, value, jsonSerializer);
 
-                if (error != null)
+                    if (error != null)
+                    {
+                        return null;
+                    }
+                }
+                catch
                 {
                     return null;
                 }
-            }
-            catch
-            {
-                return null;
-            }
 
-            return value;
-        };
+                return value;
+            };
+        }
 
         public static ValueConverter DecodeJson(IJsonSerializer jsonSerializer)
         {

backend/src/Squidex.Domain.Apps.Core.Operations/Squidex.Domain.Apps.Core.Operations.csproj

@@ -18,6 +18,7 @@
   <ItemGroup>
     <PackageReference Include="Fluid.Core.Squidex" Version="1.0.0-beta" />
     <PackageReference Include="HtmlAgilityPack" Version="1.11.29" />
+	<PackageReference Include="GeoJSON.Net" Version="1.2.19" />
     <PackageReference Include="Markdig" Version="0.22.1" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="5.0.0" />
     <PackageReference Include="Microsoft.OData.Core" Version="7.8.1" />

backend/src/Squidex.Domain.Apps.Core.Operations/ValidateContent/JsonValueConverter.cs

@@ -5,11 +5,14 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
-using System;
 using System.Collections.Generic;
+using System.IO;
+using GeoJSON.Net;
+using GeoJSON.Net.Geometry;
 using NodaTime.Text;
 using Squidex.Domain.Apps.Core.Schemas;
 using Squidex.Infrastructure;
+using Squidex.Infrastructure.Json;
 using Squidex.Infrastructure.Json.Objects;
 using Squidex.Infrastructure.Translations;
 using Squidex.Infrastructure.Validation;
@@ -23,10 +26,13 @@ namespace Squidex.Domain.Apps.Core.ValidateContent
         public readonly struct Args
         {
             public readonly IJsonValue Value;
+            public readonly IJsonSerializer JsonSerializer;
 
-            public Args(IJsonValue value)
+            public Args(IJsonValue value, IJsonSerializer jsonSerializer)
             {
                 Value = value;
+
+                JsonSerializer = jsonSerializer;
             }
         }
 
@@ -34,12 +40,14 @@ namespace Squidex.Domain.Apps.Core.ValidateContent
         {
         }
 
-        public static (object? Result, JsonError? Error) ConvertValue(IField field, IJsonValue value)
+        public static (object? Result, JsonError? Error) ConvertValue(IField field, IJsonValue value, IJsonSerializer jsonSerializer)
         {
             Guard.NotNull(field, nameof(field));
             Guard.NotNull(value, nameof(value));
 
-            return field.Accept(Instance, new Args(value));
+            var args = new Args(value, jsonSerializer);
+
+            return field.Accept(Instance, args);
         }
 
         public (object? Result, JsonError? Error) Visit(IArrayField field, Args args)
@@ -116,46 +124,55 @@ namespace Squidex.Domain.Apps.Core.ValidateContent
 
         public (object? Result, JsonError? Error) Visit(IField<GeolocationFieldProperties> field, Args args)
         {
-            if (args.Value is JsonObject geolocation)
+            if (args.Value is JsonObject geoObject)
             {
-                foreach (var propertyName in geolocation.Keys)
+                try
                 {
-                    if (!string.Equals(propertyName, "latitude", StringComparison.OrdinalIgnoreCase) &&
-                        !string.Equals(propertyName, "longitude", StringComparison.OrdinalIgnoreCase))
+                    using (var stream = new MemoryStream())
                     {
-                        return (null, new JsonError(T.Get("contents.invalidGeolocationMoreProperties")));
+                        args.JsonSerializer.Serialize(args.Value, stream, true);
+
+                        stream.Position = 0;
+
+                        var geoJson = args.JsonSerializer.Deserialize<IGeoJSONObject>(stream);
+
+                        return (geoJson, null);
                     }
                 }
-
-                if (geolocation.TryGetValue("latitude", out var latValue) && latValue is JsonNumber latNumber)
+                catch
                 {
-                    var lat = latNumber.Value;
+                    if (geoObject.TryGetValue("latitude", out var latValue) && latValue is JsonNumber latNumber)
+                    {
+                        var lat = latNumber.Value;
 
-                    if (!lat.IsBetween(-90, 90))
+                        if (!lat.IsBetween(-90, 90))
+                        {
+                            return (null, new JsonError(T.Get("contents.invalidGeolocationLatitude")));
+                        }
+                    }
+                    else
                     {
-                        return (null, new JsonError(T.Get("contents.invalidGeolocationLatitude")));
+                        return (null, new JsonError(T.Get("contents.invalidGeolocation")));
                     }
-                }
-                else
-                {
-                    return (null, new JsonError(T.Get("contents.invalidGeolocation")));
-                }
 
-                if (geolocation.TryGetValue("longitude", out var lonValue) && lonValue is JsonNumber lonNumber)
-                {
-                    var lon = lonNumber.Value;
+                    if (geoObject.TryGetValue("longitude", out var lonValue) && lonValue is JsonNumber lonNumber)
+                    {
+                        var lon = lonNumber.Value;
 
-                    if (!lon.IsBetween(-180, 180))
+                        if (!lon.IsBetween(-180, 180))
+                        {
+                            return (null, new JsonError(T.Get("contents.invalidGeolocationLongitude")));
+                        }
+                    }
+                    else
                     {
-                        return (null, new JsonError(T.Get("contents.invalidGeolocationLongitude")));
+                        return (null, new JsonError(T.Get("contents.invalidGeolocation")));
                     }
-                }
-                else
-                {
-                    return (null, new JsonError(T.Get("contents.invalidGeolocation")));
-                }
 
-                return (args.Value, null);
+                    var position = new Position(latNumber.Value, lonNumber.Value);
+
+                    return (position, null);
+                }
             }
 
             return (null, new JsonError(T.Get("contents.invalidGeolocation")));

backend/src/Squidex.Domain.Apps.Core.Operations/ValidateContent/ValidationContext.cs

@@ -9,6 +9,7 @@ using System;
 using System.Collections.Immutable;
 using Squidex.Domain.Apps.Core.Schemas;
 using Squidex.Infrastructure;
+using Squidex.Infrastructure.Json;
 
 namespace Squidex.Domain.Apps.Core.ValidateContent
 {
@@ -16,17 +17,21 @@ namespace Squidex.Domain.Apps.Core.ValidateContent
     {
         public ImmutableQueue<string> Path { get; private set; } = ImmutableQueue<string>.Empty;
 
+        public IJsonSerializer JsonSerializer { get; private set; }
+
         public DomainId ContentId { get; }
 
         public bool IsOptional { get; private set; }
 
         public ValidationContext(
+            IJsonSerializer jsonSerializer,
             NamedId<DomainId> appId,
             NamedId<DomainId> schemaId,
             Schema schema,
             DomainId contentId)
             : base(appId, schemaId, schema)
         {
+            JsonSerializer = jsonSerializer;
             ContentId = contentId;
         }
 

backend/src/Squidex.Domain.Apps.Core.Operations/ValidateContent/Validators/FieldValidator.cs

@@ -41,7 +41,7 @@ namespace Squidex.Domain.Apps.Core.ValidateContent.Validators
                     }
                     else
                     {
-                        var (json, error) = JsonValueConverter.ConvertValue(field, jsonValue);
+                        var (json, error) = JsonValueConverter.ConvertValue(field, jsonValue, context.JsonSerializer);
 
                         if (error != null)
                         {

backend/src/Squidex.Domain.Apps.Entities/Contents/DomainObject/ContentOperationContext.cs

@@ -20,6 +20,7 @@ using Squidex.Domain.Apps.Entities.Contents.Commands;
 using Squidex.Domain.Apps.Entities.Contents.Repositories;
 using Squidex.Domain.Apps.Entities.Schemas;
 using Squidex.Infrastructure;
+using Squidex.Infrastructure.Json;
 using Squidex.Infrastructure.Validation;
 using Squidex.Log;
 
@@ -40,6 +41,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.DomainObject
         private readonly IEnumerable<IValidatorsFactory> validators;
         private readonly IContentWorkflow contentWorkflow;
         private readonly IContentRepository contentRepository;
+        private readonly IJsonSerializer jsonSerializer;
         private ISchemaEntity schema;
         private IAppEntity app;
         private ContentCommand command;
@@ -54,6 +56,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.DomainObject
             IEnumerable<IValidatorsFactory> validators,
             IContentWorkflow contentWorkflow,
             IContentRepository contentRepository,
+            IJsonSerializer jsonSerializer,
             IScriptEngine scriptEngine,
             ISemanticLog log)
         {
@@ -61,6 +64,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.DomainObject
             Guard.NotDefault(validators, nameof(validators));
             Guard.NotDefault(contentWorkflow, nameof(contentWorkflow));
             Guard.NotDefault(contentRepository, nameof(contentRepository));
+            Guard.NotDefault(jsonSerializer, nameof(jsonSerializer));
             Guard.NotDefault(scriptEngine, nameof(scriptEngine));
             Guard.NotDefault(log, nameof(log));
 
@@ -68,6 +72,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.DomainObject
             this.validators = validators;
             this.contentWorkflow = contentWorkflow;
             this.contentRepository = contentRepository;
+            this.jsonSerializer = jsonSerializer;
             this.scriptEngine = scriptEngine;
 
             this.log = log;
@@ -98,7 +103,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.DomainObject
 
             this.schema = schema;
 
-            validationContext = new ValidationContext(appId, schemaId, schema.SchemaDef, command.ContentId).Optimized(optimized);
+            validationContext = new ValidationContext(jsonSerializer, appId, schemaId, schema.SchemaDef, command.ContentId).Optimized(optimized);
         }
 
         public Task<Status> GetInitialStatusAsync()

backend/src/Squidex.Domain.Apps.Entities/Contents/Queries/Steps/ConvertData.cs

@@ -15,6 +15,7 @@ using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Assets.Repositories;
 using Squidex.Domain.Apps.Entities.Contents.Repositories;
 using Squidex.Infrastructure;
+using Squidex.Infrastructure.Json;
 using Squidex.Infrastructure.Tasks;
 
 namespace Squidex.Domain.Apps.Entities.Contents.Queries.Steps
@@ -24,16 +25,28 @@ namespace Squidex.Domain.Apps.Entities.Contents.Queries.Steps
         private readonly IUrlGenerator urlGenerator;
         private readonly IAssetRepository assetRepository;
         private readonly IContentRepository contentRepository;
+        private readonly FieldConverter excludedChangedField;
+        private readonly FieldConverter excludedChangedValue;
+        private readonly FieldConverter excludedHiddenField;
+        private readonly FieldConverter excludedHiddenValue;
 
-        public ConvertData(IUrlGenerator urlGenerator, IAssetRepository assetRepository, IContentRepository contentRepository)
+        public ConvertData(IUrlGenerator urlGenerator, IJsonSerializer jsonSerializer,
+            IAssetRepository assetRepository, IContentRepository contentRepository)
         {
             Guard.NotNull(urlGenerator, nameof(urlGenerator));
+            Guard.NotNull(jsonSerializer, nameof(jsonSerializer));
             Guard.NotNull(assetRepository, nameof(assetRepository));
             Guard.NotNull(contentRepository, nameof(contentRepository));
 
             this.urlGenerator = urlGenerator;
             this.assetRepository = assetRepository;
             this.contentRepository = contentRepository;
+
+            excludedChangedField = FieldConverters.ExcludeChangedTypes(jsonSerializer);
+            excludedChangedValue = FieldConverters.ForValues(ValueConverters.ForNested(ValueConverters.ExcludeChangedTypes(jsonSerializer)));
+
+            excludedHiddenField = FieldConverters.ExcludeHidden;
+            excludedHiddenValue = FieldConverters.ForValues(ValueConverters.ForNested(ValueConverters.ExcludeHidden));
         }
 
         public async Task EnrichAsync(Context context, IEnumerable<ContentEntity> contents, ProvideSchema schemas)
@@ -102,12 +115,12 @@ namespace Squidex.Domain.Apps.Entities.Contents.Queries.Steps
         {
             if (!context.IsFrontendClient)
             {
-                yield return FieldConverters.ExcludeHidden;
-                yield return FieldConverters.ForValues(ValueConverters.ForNested(ValueConverters.ExcludeHidden));
+                yield return excludedHiddenField;
+                yield return excludedHiddenValue;
             }
 
-            yield return FieldConverters.ExcludeChangedTypes;
-            yield return FieldConverters.ForValues(ValueConverters.ForNested(ValueConverters.ExcludeChangedTypes));
+            yield return excludedChangedField;
+            yield return excludedChangedValue;
 
             if (cleanReferences != null)
             {

backend/src/Squidex.Infrastructure/Json/IJsonSerializer.cs

@@ -14,7 +14,7 @@ namespace Squidex.Infrastructure.Json
     {
         string Serialize<T>(T value, bool intented = false);
 
-        void Serialize<T>(T value, Stream stream);
+        void Serialize<T>(T value, Stream stream, bool leaveOpen = false);
 
         T Deserialize<T>(string value, Type? actualType = null);
 

backend/src/Squidex.Infrastructure/Json/Newtonsoft/NewtonsoftJsonSerializer.cs

@@ -30,9 +30,9 @@ namespace Squidex.Infrastructure.Json.Newtonsoft
             return JsonConvert.SerializeObject(value, intented ? Formatting.Indented : Formatting.None, settings);
         }
 
-        public void Serialize<T>(T value, Stream stream)
+        public void Serialize<T>(T value, Stream stream, bool leaveOpen = false)
         {
-            using (var writer = new StreamWriter(stream))
+            using (var writer = new StreamWriter(stream, leaveOpen: leaveOpen))
             {
                 serializer.Serialize(writer, value);
 

backend/src/Squidex/Config/Domain/SerializationServices.cs

@@ -5,6 +5,7 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using GeoJSON.Net.Converters;
 using Microsoft.Extensions.DependencyInjection;
 using Migrations;
 using Newtonsoft.Json;
@@ -40,6 +41,7 @@ namespace Squidex.Config.Domain
                 new EnvelopeHeadersConverter(),
                 new FilterConverter(),
                 new InstantConverter(),
+                new GeoJsonConverter(),
                 new JsonValueConverter(),
                 new LanguageConverter(),
                 new LanguagesConfigConverter(),

backend/tests/Squidex.Domain.Apps.Core.Tests/Operations/ConvertContent/FieldConvertersTests.cs

@@ -65,7 +65,7 @@ namespace Squidex.Domain.Apps.Core.Operations.ConvertContent
                     .AddValue("en", null)
                     .AddValue("de", 1);
 
-            var result = FieldConverters.ExcludeChangedTypes(source, field);
+            var result = FieldConverters.ExcludeChangedTypes(TestUtils.DefaultSerializer)(source, field);
 
             Assert.Same(source, result);
         }
@@ -80,7 +80,7 @@ namespace Squidex.Domain.Apps.Core.Operations.ConvertContent
                     .AddValue("en", "EN")
                     .AddValue("de", 0);
 
-            var result = FieldConverters.ExcludeChangedTypes(source, field);
+            var result = FieldConverters.ExcludeChangedTypes(TestUtils.DefaultSerializer)(source, field);
 
             Assert.Null(result);
         }

backend/tests/Squidex.Domain.Apps.Core.Tests/Operations/ConvertContent/ValueConvertersTests.cs

@@ -106,7 +106,7 @@ namespace Squidex.Domain.Apps.Core.Operations.ConvertContent
         {
             var source = JsonValue.Create("invalid");
 
-            var result = ValueConverters.ExcludeChangedTypes(source, numberField);
+            var result = ValueConverters.ExcludeChangedTypes(TestUtils.DefaultSerializer)(source, numberField);
 
             Assert.Null(result);
         }

backend/tests/Squidex.Domain.Apps.Core.Tests/Operations/ValidateContent/GeolocationFieldTests.cs

@@ -38,13 +38,17 @@ namespace Squidex.Domain.Apps.Core.Operations.ValidateContent
         }
 
         [Fact]
-        public async Task Should_not_add_error_if_geolocation_is_valid()
+        public async Task Should_not_add_error_if_geolocation_is_valid_geojson()
         {
             var sut = Field(new GeolocationFieldProperties());
 
             var geolocation = JsonValue.Object()
-                .Add("latitude", 0)
-                .Add("longitude", 0);
+                .Add("coordinates",
+                    JsonValue.Array(
+                        JsonValue.Create(12),
+                        JsonValue.Create(45)
+                    ))
+                .Add("type", "Point");
 
             await sut.ValidateAsync(geolocation, errors);
 
@@ -52,49 +56,35 @@ namespace Squidex.Domain.Apps.Core.Operations.ValidateContent
         }
 
         [Fact]
-        public async Task Should_add_error_if_geolocation_has_invalid_latitude()
+        public async Task Should_not_add_error_if_geolocation_is_valid()
         {
-            var sut = Field(new GeolocationFieldProperties { IsRequired = true });
+            var sut = Field(new GeolocationFieldProperties());
 
-            var geolocation = JsonValue.Object()
-                .Add("latitude", 200)
-                .Add("longitude", 0);
+            await sut.ValidateAsync(CreateValue(0, 0), errors);
 
-            await sut.ValidateAsync(geolocation, errors);
-
-            errors.Should().BeEquivalentTo(
-                new[] { "Latitude must be between -90 and 90." });
+            Assert.Empty(errors);
         }
 
         [Fact]
-        public async Task Should_add_error_if_geolocation_has_invalid_longitude()
+        public async Task Should_add_error_if_geolocation_has_invalid_latitude()
         {
             var sut = Field(new GeolocationFieldProperties { IsRequired = true });
 
-            var geolocation = JsonValue.Object()
-                .Add("latitude", 0)
-                .Add("longitude", 200);
-
-            await sut.ValidateAsync(geolocation, errors);
+            await sut.ValidateAsync(CreateValue(200, 0), errors);
 
             errors.Should().BeEquivalentTo(
-                new[] { "Longitude must be between -180 and 180." });
+                new[] { "Latitude must be between -90 and 90." });
         }
 
         [Fact]
-        public async Task Should_add_error_if_geolocation_has_too_many_properties()
+        public async Task Should_add_error_if_geolocation_has_invalid_longitude()
         {
             var sut = Field(new GeolocationFieldProperties { IsRequired = true });
 
-            var geolocation = JsonValue.Object()
-                .Add("invalid", 0)
-                .Add("latitude", 0)
-                .Add("longitude", 0);
-
-            await sut.ValidateAsync(geolocation, errors);
+            await sut.ValidateAsync(CreateValue(0, 200), errors);
 
             errors.Should().BeEquivalentTo(
-                new[] { "Geolocation can only have latitude and longitude property." });
+                new[] { "Longitude must be between -180 and 180." });
         }
 
         [Fact]
@@ -108,6 +98,11 @@ namespace Squidex.Domain.Apps.Core.Operations.ValidateContent
                 new[] { "Field is required." });
         }
 
+        private static JsonObject CreateValue(double lat, double lon)
+        {
+            return JsonValue.Object().Add("latitude", lat).Add("longitude", lon);
+        }
+
         private static RootField<GeolocationFieldProperties> Field(GeolocationFieldProperties properties)
         {
             return Fields.Geolocation(1, "my-geolocation", Partitioning.Invariant, properties);

backend/tests/Squidex.Domain.Apps.Core.Tests/Operations/ValidateContent/ValidationTestExtensions.cs

@@ -11,6 +11,7 @@ using System.Threading.Tasks;
 using FakeItEasy;
 using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Domain.Apps.Core.Schemas;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Core.ValidateContent;
 using Squidex.Domain.Apps.Core.ValidateContent.Validators;
 using Squidex.Infrastructure;
@@ -127,6 +128,7 @@ namespace Squidex.Domain.Apps.Core.Operations.ValidateContent
             ValidationAction action = ValidationAction.Upsert)
         {
             var context = new ValidationContext(
+                TestUtils.DefaultSerializer,
                 AppId,
                 SchemaId,
                 schema ?? new Schema(SchemaId.Name),

backend/tests/Squidex.Domain.Apps.Core.Tests/TestHelpers/TestUtils.cs

@@ -8,6 +8,7 @@
 using System;
 using System.Linq;
 using System.Reflection;
+using GeoJSON.Net.Converters;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Converters;
 using Squidex.Domain.Apps.Core.Apps.Json;
@@ -30,7 +31,9 @@ namespace Squidex.Domain.Apps.Core.TestHelpers
     {
         public static readonly IJsonSerializer DefaultSerializer = CreateSerializer();
 
-        public static IJsonSerializer CreateSerializer(TypeNameHandling typeNameHandling = TypeNameHandling.Auto)
+        public static readonly JsonSerializerSettings DefaultSerializerSettings = CreateSerializerSettings();
+
+        public static JsonSerializerSettings CreateSerializerSettings(TypeNameHandling typeNameHandling = TypeNameHandling.Auto)
         {
             var typeNameRegistry =
                 new TypeNameRegistry()
@@ -51,6 +54,7 @@ namespace Squidex.Domain.Apps.Core.TestHelpers
                     new DomainIdConverter(),
                     new EnvelopeHeadersConverter(),
                     new FilterConverter(),
+                    new GeoJsonConverter(),
                     new InstantConverter(),
                     new JsonValueConverter(),
                     new LanguageConverter(),
@@ -73,6 +77,13 @@ namespace Squidex.Domain.Apps.Core.TestHelpers
                 TypeNameHandling = typeNameHandling
             };
 
+            return serializerSettings;
+        }
+
+        public static IJsonSerializer CreateSerializer(TypeNameHandling typeNameHandling = TypeNameHandling.Auto)
+        {
+            var serializerSettings = CreateSerializerSettings(typeNameHandling);
+
             return new NewtonsoftJsonSerializer(serializerSettings);
         }
 

backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/MongoDb/AssetsQueryFixture.cs

@@ -12,6 +12,7 @@ using MongoDB.Bson;
 using MongoDB.Driver;
 using Newtonsoft.Json;
 using Squidex.Domain.Apps.Core.Assets;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Entities.Assets.Repositories;
 using Squidex.Domain.Apps.Entities.MongoDb.Assets;
 using Squidex.Domain.Apps.Entities.TestHelpers;
@@ -117,7 +118,7 @@ namespace Squidex.Domain.Apps.Entities.Assets.MongoDb
 
         private static void SetupJson()
         {
-            var jsonSerializer = JsonSerializer.Create(JsonHelper.DefaultSettings());
+            var jsonSerializer = JsonSerializer.Create(TestUtils.DefaultSerializerSettings);
 
             BsonJsonConvention.Register(jsonSerializer);
         }

backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/Queries/AssetEnricherTests.cs

@@ -9,6 +9,7 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 using FakeItEasy;
 using Squidex.Domain.Apps.Core.Tags;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Entities.TestHelpers;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Caching;

backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/Queries/AssetQueryParserTests.cs

@@ -10,6 +10,7 @@ using System.Threading.Tasks;
 using FakeItEasy;
 using Microsoft.Extensions.Options;
 using Squidex.Domain.Apps.Core.Tags;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Entities.TestHelpers;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Validation;
@@ -30,7 +31,7 @@ namespace Squidex.Domain.Apps.Entities.Assets.Queries
 
             var options = Options.Create(new AssetOptions { DefaultPageSize = 30 });
 
-            sut = new AssetQueryParser(JsonHelper.DefaultSerializer, tagService, options);
+            sut = new AssetQueryParser(TestUtils.DefaultSerializer, tagService, options);
         }
 
         [Fact]

backend/tests/Squidex.Domain.Apps.Entities.Tests/Backup/UserMappingTests.cs

@@ -9,6 +9,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using FakeItEasy;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Entities.TestHelpers;
 using Squidex.Infrastructure;
 using Squidex.Shared.Users;

backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/ContentChangedTriggerHandlerTests.cs

@@ -17,6 +17,7 @@ using Squidex.Domain.Apps.Core.HandleRules;
 using Squidex.Domain.Apps.Core.Rules.EnrichedEvents;
 using Squidex.Domain.Apps.Core.Rules.Triggers;
 using Squidex.Domain.Apps.Core.Scripting;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Entities.Contents.Repositories;
 using Squidex.Domain.Apps.Entities.TestHelpers;
 using Squidex.Domain.Apps.Events;

backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/DomainObject/ContentDomainObjectTests.cs

@@ -13,6 +13,7 @@ using Squidex.Domain.Apps.Core;
 using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Domain.Apps.Core.Schemas;
 using Squidex.Domain.Apps.Core.Scripting;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Core.ValidateContent;
 using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Contents.Commands;
@@ -107,10 +108,12 @@ namespace Squidex.Domain.Apps.Entities.Contents.DomainObject
 
             var validators = Enumerable.Repeat(new DefaultValidatorsFactory(), 1);
 
-            var context = new ContentOperationContext(appProvider,
+            var context = new ContentOperationContext(
+                appProvider,
                 validators,
                 contentWorkflow,
                 contentRepository,
+                TestUtils.DefaultSerializer,
                 scriptEngine, A.Fake<ISemanticLog>());
 
             sut = new ContentDomainObject(Store, A.Dummy<ISemanticLog>(), context);

backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/MongoDb/ContentsQueryFixture.cs

@@ -16,6 +16,7 @@ using Newtonsoft.Json;
 using Squidex.Domain.Apps.Core;
 using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Domain.Apps.Core.Schemas;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Contents.Repositories;
 using Squidex.Domain.Apps.Entities.Contents.Text;
@@ -63,7 +64,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.MongoDb
                     mongoDatabase,
                     CreateAppProvider(),
                     CreateTextIndexer(),
-                    JsonHelper.DefaultSerializer);
+                    TestUtils.DefaultSerializer);
 
             Task.Run(async () =>
             {
@@ -161,7 +162,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.MongoDb
 
         private static void SetupJson()
         {
-            var jsonSerializer = JsonSerializer.Create(JsonHelper.DefaultSettings());
+            var jsonSerializer = JsonSerializer.Create(TestUtils.DefaultSerializerSettings);
 
             BsonJsonConvention.Register(jsonSerializer);
         }

backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/Queries/ContentQueryParserTests.cs

@@ -10,6 +10,7 @@ using Microsoft.Extensions.Caching.Memory;
 using Microsoft.Extensions.Options;
 using Squidex.Domain.Apps.Core;
 using Squidex.Domain.Apps.Core.Schemas;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Entities.Schemas;
 using Squidex.Domain.Apps.Entities.TestHelpers;
 using Squidex.Infrastructure;
@@ -42,7 +43,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.Queries
 
             var cache = new MemoryCache(Options.Create(new MemoryCacheOptions()));
 
-            sut = new ContentQueryParser(cache, JsonHelper.DefaultSerializer, options);
+            sut = new ContentQueryParser(cache, TestUtils.DefaultSerializer, options);
         }
 
         [Fact]

backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/Queries/ConvertDataTests.cs

@@ -12,6 +12,7 @@ using FakeItEasy;
 using Squidex.Domain.Apps.Core;
 using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Domain.Apps.Core.Schemas;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Entities.Assets.Repositories;
 using Squidex.Domain.Apps.Entities.Contents.Queries.Steps;
 using Squidex.Domain.Apps.Entities.Contents.Repositories;
@@ -20,6 +21,7 @@ using Squidex.Domain.Apps.Entities.TestHelpers;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Json.Objects;
 using Xunit;
+using TestUtils = Squidex.Domain.Apps.Core.TestHelpers.TestUtils;
 
 namespace Squidex.Domain.Apps.Entities.Contents.Queries
 {
@@ -46,7 +48,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.Queries
             schema = Mocks.Schema(appId, schemaId, schemaDef);
             schemaProvider = x => Task.FromResult(schema);
 
-            sut = new ConvertData(urlGenerator, assetRepository, contentRepository);
+            sut = new ConvertData(urlGenerator, TestUtils.DefaultSerializer, assetRepository, contentRepository);
         }
 
         [Fact]

backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/Text/CachingTextIndexerStateTests.cs

@@ -8,6 +8,7 @@
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using FakeItEasy;
+using Squidex.Domain.Apps.Core.TestHelpers;
 using Squidex.Domain.Apps.Entities.Contents.Text.State;
 using Squidex.Domain.Apps.Entities.TestHelpers;
 using Squidex.Infrastructure;

backend/tests/Squidex.Domain.Apps.Entities.Tests/TestHelpers/AExtensions.cs

@@ -44,20 +44,5 @@ namespace Squidex.Domain.Apps.Entities.TestHelpers
         {
             return that.Matches(x => x.ToString() == query);
         }
-
-        public static T[] Is<T>(this INegatableArgumentConstraintManager<T[]> that, params T[]? values)
-        {
-            return values == null ? that.IsNull() : that.IsSameSequenceAs(values);
-        }
-
-        public static HashSet<T> Is<T>(this INegatableArgumentConstraintManager<HashSet<T>> that, IEnumerable<T>? values)
-        {
-            return values == null ? that.IsNull() : that.Matches(x => x.Intersect(values).Count() == values.Count());
-        }
-
-        public static HashSet<T> Is<T>(this INegatableArgumentConstraintManager<HashSet<T>> that, params T[]? values)
-        {
-            return values == null ? that.IsNull() : that.Matches(x => x.Intersect(values).Count() == values.Length);
-        }
     }
 }

backend/tests/Squidex.Domain.Apps.Entities.Tests/TestHelpers/JsonHelper.cs

@@ -1,69 +0,0 @@
-// ==========================================================================
-//  Squidex Headless CMS
-// ==========================================================================
-//  Copyright (c) Squidex UG (haftungsbeschränkt)
-//  All rights reserved. Licensed under the MIT license.
-// ==========================================================================
-
-using System;
-using Newtonsoft.Json;
-using Newtonsoft.Json.Converters;
-using Squidex.Infrastructure.Json;
-using Squidex.Infrastructure.Json.Newtonsoft;
-using Squidex.Infrastructure.Queries.Json;
-using Squidex.Infrastructure.Reflection;
-
-namespace Squidex.Domain.Apps.Entities.TestHelpers
-{
-    public static class JsonHelper
-    {
-        public static readonly IJsonSerializer DefaultSerializer = CreateSerializer();
-
-        public static IJsonSerializer CreateSerializer(TypeNameRegistry? typeNameRegistry = null)
-        {
-            var serializerSettings = DefaultSettings(typeNameRegistry);
-
-            return new NewtonsoftJsonSerializer(serializerSettings);
-        }
-
-        public static JsonSerializerSettings DefaultSettings(TypeNameRegistry? typeNameRegistry = null)
-        {
-            return new JsonSerializerSettings
-            {
-                SerializationBinder = new TypeNameSerializationBinder(typeNameRegistry ?? new TypeNameRegistry()),
-
-                ContractResolver = new ConverterContractResolver(
-                    new ClaimsPrincipalConverter(),
-                    new InstantConverter(),
-                    new EnvelopeHeadersConverter(),
-                    new FilterConverter(),
-                    new JsonValueConverter(),
-                    new LanguageConverter(),
-                    new NamedDomainIdConverter(),
-                    new NamedGuidIdConverter(),
-                    new NamedLongIdConverter(),
-                    new NamedStringIdConverter(),
-                    new PropertyPathConverter(),
-                    new RefTokenConverter(),
-                    new StringEnumConverter()),
-
-                TypeNameHandling = TypeNameHandling.Auto
-            };
-        }
-
-        public static T SerializeAndDeserialize<T>(this T value)
-        {
-            return DefaultSerializer.Deserialize<Tuple<T>>(DefaultSerializer.Serialize(Tuple.Create(value))).Item1;
-        }
-
-        public static T Deserialize<T>(string value)
-        {
-            return DefaultSerializer.Deserialize<Tuple<T>>($"{{ \"Item1\": \"{value}\" }}").Item1;
-        }
-
-        public static T Deserialize<T>(object value)
-        {
-            return DefaultSerializer.Deserialize<Tuple<T>>($"{{ \"Item1\": {value} }}").Item1;
-        }
-    }
-}