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Pytest plugin for automatic JSON Schema generation and validation from examples

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Project description

pytest: Typed Schema Shot

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Plugin for pytest that automatically generates JSON Schemas based on data examples and validates data against saved schemas.

Плагин для pytest, который автоматически генерирует JSON Schema на основе примеров данных и проверяет данные по сохраненным схемам.

Features

  • Automatic JSON Schema generation from data examples (using the genson library).

    Автоматическая генерация JSON Schema по примерам данных (на основе библиотеки genson).

  • Schema storage and management.

    Хранение и управление схемами.

  • Validation of data against saved schemas.

    Валидация данных по сохраненным схемам.

  • Schema update via --schema-update (create new schemas, remove unused ones, update existing).

    Обновление схем через --schema-update (создание новых, удаление неиспользуемых, обновление существующих).

  • Support for both async and synchronous functions.

    Поддержка асинхронных (async) и синхронных функций.

  • Support for Union types and optional fields.

    Поддержка Union типов и опциональных полей.

  • Built-in diff comparison of changes

    Встроенный diff сравнения изменений:

    - ["complex_structure"]["mail"].format: "email"
    
    r ["complex_structure"]["age"].type:
    -   [
    -     "integer",
    -     "number"
    -   ]
    +   "number"
    
    - ["multitype_array"]: {"key": {"type": "string"}}
    
    - ["multitype_array"].type: "object"
    
    - ["multitype_array"].required:
    -    "ключ"
    
    + ["multitype_array"].anyOf:
    +    {"type": ["null", "string"]},
    +    {"type": "object", "properties": {"key": {"type": "string"}}, "required": ["key"]}
    

Installation

pip install pytest-typed-schema-shot

Usage

  1. Use the schemashot fixture in your tests

    В тестах используйте фикстуру schemashot:

    from typed_schema_shot import SchemaShot
    
    @pytest.mark.asyncio
    async def test_something(schemashot: SchemaShot):
        data = await API.data()
        schemashot.assert_match(data, "data")
    
  2. On first run, generate schemas with the --schema-update flag

    При первом запуске создайте схемы --schema-update:

    pytest --schema-update
    
  3. On subsequent runs, tests will validate data against saved schemas

    В последующих запусках тесты будут проверять данные по сохраненным схемам:

    pytest
    

Key Capabilities

  • Union Types: support multiple possible types for fields

    Поддержка множественных типов полей.

  • Optional Fields: automatic detection of required and optional fields

    Автоматическое определение обязательных и необязательных полей.

  • Cleanup: automatic removal of unused schemas when running in update mode

    Автоматическое удаление неиспользуемых схем в режиме обновления.

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