squidex/backend/tests/Squidex.Domain.Apps.Core.Tests/Operations/Scripting/JsonMapperTests.cs

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

using Jint;
using Jint.Native.Object;
using Squidex.Domain.Apps.Core.Scripting.Internal;
using Squidex.Infrastructure.Json.Objects;

namespace Squidex.Domain.Apps.Core.Operations.Scripting;

public class JsonMapperTests
{
    [Fact]
    public void Should_map_json_objects_into_a_shared_shape()
    {
        var engine = new Engine(o => o.Strict());

        var mapped = (ObjectInstance)JsonMapper.Map(CreateJson(), engine);
        var nested = (ObjectInstance)mapped.Get("nested");

        // Sharing the layout is what makes reading properties of many content items fast. It only affects
        // performance and never behavior, which is why it is asserted here: building these objects with a
        // custom ObjectInstance class again would silently undo it and no other test would notice.
        Assert.True(engine.Advanced.HasSharedShape(mapped));
        Assert.True(engine.Advanced.HasSharedShape(nested));
    }

    [Fact]
    public void Should_share_the_shape_between_objects_of_the_same_shape()
    {
        var engine = new Engine(o => o.Strict());

        var first = (ObjectInstance)JsonMapper.Map(CreateJson(), engine);
        var second = (ObjectInstance)JsonMapper.Map(CreateJson(), engine);

        Assert.True(engine.Advanced.HasSharedShape(first));
        Assert.True(engine.Advanced.HasSharedShape(second));
    }

    private static JsonValue CreateJson()
    {
        return JsonValue.Create(
            new JsonObject()
                .Add("name", JsonValue.Create("squidex"))
                .Add("count", JsonValue.Create(3))
                .Add("nested", JsonValue.Create(new JsonObject().Add("flag", JsonValue.True))));
    }
}