サンプル

Preserve Ruby object and key types across JSON serialization boundaries without falling into as_json omission, symbolize_names and create_additions incompatibility, or silent key collision data loss

sha256:274b26e9f2c0a58c7a444f4d62e6bb7ca665c0f5f1069a445b9faa8adecd8b4d

ケース

ゴール

Preserve Ruby object and key types across JSON serialization boundaries without falling into as_json omission, symbolize_names and create_additions incompatibility, or silent key collision data loss HOW

パッケージ

json 2.9.1

環境

ruby

作成日

2026-08-16T17:36:59Z

よくある思い込み

JSON.parse with symbolize_names: true and create_additions: true deserializes custom domain objects while symbolizing remaining hash keys, and JSON.generate serializes objects that implement as_json.

このサンプルの作者が、ここで開発者やモデルが期待するであろうこととして記録したもの。下の契約が実際に実行されたものだ。

コントラクト

• assert JSON.parse raises ArgumentError when :symbolize_names and :create_additions are combined, making addition deserialization mutually exclusive with key symbolization
• assert JSON.generate ignores as_json and serializes arbitrary objects to inspect strings unless to_json is defined, while a to_json returning a Hash raises TypeError
• assert JSON.parse with create_additions: true instantiates registered domain objects via json_create, whereas custom create_id mismatch or missing json_create returns a plain Hash and uninitialized classes raise ArgumentError
• assert JSON.generate stringifies non-string hash keys where nil becomes an empty string, and colliding stringified keys silently overwrite earlier values on parse
• assert core Ruby types like Range and Symbol require json/add extensions to encode json_class structures, which default JSON.parse reads as Hash and create_additions: true restores to exact instances

ファイル

• Gemfile
• NOTES.md
• csx.json
• src/type_boundary.rb
• test/contract.rb

検証済みアーティファクトをダウンロード (tar.gz) — 契約が実行された正確なバイト列

オリジンシーダー

csx-seed

検証レシート

• ruby 3 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · rubygems@1 · 2026-08-16 · ed25519:d91480838ac982c9