Skip to main content

Pytest plugin for automatic JSON Schema generation and validation from examples

This project has been archived.

The maintainers of this project have marked this project as archived. No new releases are expected.

Project description

pytest: Typed Schema Shot

PyPI - Python Version PyPI - Package Version Tests PyPI - Downloads Discord Telegram

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.

image

Features

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

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

  • Format detection: Automatic detection and validation of string formats (email, UUID, date, date-time, URI, IPv4).

    Обнаружение форматов: Автоматическое обнаружение и валидация форматов строк (email, UUID, date, date-time, URI, IPv4).

  • 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.

  • Format Detection: automatic detection of string formats including:

    • Email: user@example.com{"type": "string", "format": "email"}

    • UUID: 550e8400-e29b-41d4-a716-446655440000{"type": "string", "format": "uuid"}

    • Date: 2023-01-15{"type": "string", "format": "date"}

    • Date-Time: 2023-01-01T12:00:00Z{"type": "string", "format": "date-time"}

    • URI: https://example.com{"type": "string", "format": "uri"}

    • IPv4: 192.168.1.1{"type": "string", "format": "ipv4"}

      Обнаружение форматов: автоматическое определение форматов строк с поддержкой валидации.

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

    Автоматическое удаление неиспользуемых схем в режиме обновления.

  • Schema Summary: colored terminal output showing created, updated, deleted and unused schemas

    Цветной вывод в терминале с информацией о созданных, обновленных, удаленных и неиспользуемых схемах.

Advanced Usage

Configuration Options

The plugin supports the following pytest options:

  • --schema-update: Enable schema update mode (create new, update existing, delete unused schemas)

You can also configure the plugin via pytest.ini:

[tool:pytest]
# Custom directory for storing schemas (default: __snapshots__)
schema_shot_dir = schema_files

Or in pyproject.toml:

[tool.pytest.ini_options]
schema_shot_dir = "schema_files"

Schema Summary

The plugin automatically shows a summary at the end of test execution:

======== Schema Summary ========
Created schemas (1):
  - new_api_schema.schema.json
Updated schemas (1):  
  - user_profile.schema.json
Unused schemas (2):
  - old_feature.schema.json
  - deprecated_api.schema.json
Use --schema-update to delete unused schemas

Best Practices

  1. Commit schemas to version control: Schemas should be part of your repository
  2. Review schema changes: When schemas change, review the diffs carefully
  3. Clean up regularly: Use --schema-update periodically to remove unused schemas
  4. Descriptive names: Use clear, descriptive names for your schemas

Troubleshooting

Schema not found error: Run tests with --schema-update to create missing schemas

Validation errors: Check if your data structure has changed and update schemas accordingly

Permission errors: Ensure your test directory is writable

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

pytest_typed_schema_shot-0.1.9.tar.gz (19.6 kB view details)

Uploaded Source

Built Distribution

If you're not sure about the file name format, learn more about wheel file names.

pytest_typed_schema_shot-0.1.9-py3-none-any.whl (17.6 kB view details)

Uploaded Python 3

File details

Details for the file pytest_typed_schema_shot-0.1.9.tar.gz.

File metadata

  • Download URL: pytest_typed_schema_shot-0.1.9.tar.gz
  • Upload date:
  • Size: 19.6 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? Yes
  • Uploaded via: twine/6.1.0 CPython/3.12.9

File hashes

Hashes for pytest_typed_schema_shot-0.1.9.tar.gz
Algorithm Hash digest
SHA256 d91d117cc527e7265730687ab2070471d53152b65ed0bea5d90576d774c105d5
MD5 2c47f3cd994a21edd7f097a91346fb92
BLAKE2b-256 a61e9475c48c94cdf2e074d514fc9341a09f9a381dae07c6f3360848496cf56b

See more details on using hashes here.

Provenance

The following attestation bundles were made for pytest_typed_schema_shot-0.1.9.tar.gz:

Publisher: python-publish.yml on Open-Inflation/pytest-typed-schema-shot

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file pytest_typed_schema_shot-0.1.9-py3-none-any.whl.

File metadata

File hashes

Hashes for pytest_typed_schema_shot-0.1.9-py3-none-any.whl
Algorithm Hash digest
SHA256 fd66fa6b320889d6e3ec3c83b50972c8e9ade128d8a4a79e928d8d7265a9314a
MD5 2690b3e1629bdfafc31d2266fbdbe036
BLAKE2b-256 95f532238dd50e3c94f8d6f87cac107a0ddea38cfd9db9b55726a34e2817d1d5

See more details on using hashes here.

Provenance

The following attestation bundles were made for pytest_typed_schema_shot-0.1.9-py3-none-any.whl:

Publisher: python-publish.yml on Open-Inflation/pytest-typed-schema-shot

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Supported by

AWS Cloud computing and Security Sponsor Datadog Monitoring Depot Continuous Integration Fastly CDN Google Download Analytics Pingdom Monitoring Sentry Error logging StatusPage Status page