BalderHub Package `balderhub-crud`

Test data management reliably - across any platform.

This is a BalderHub package for the Balder test framework. If you are new to Balder check out the official documentation first.

balderhub-crud is a BalderHub package that provides ready-to-use, high-quality test scenarios and building blocks for comprehensively validating Create, Read, Update and Delete (CRUD) operations on any kind of data.

Whether you are testing a REST API, a database, a mobile app backend, a desktop application, a file-based store, or an embedded device - this package lets you write powerful, reusable data-management tests once and run them against completely different systems with minimal extra effort.

What you will find in this package

Ready-to-use Scenarios - Pre-built Balder scenarios for all essential CRUD operations:
- Single-item: Create, Read, Update (Delete coming soon)
- Multi-item: Read operations
- Advanced Triangle scenarios (modify on one device, verify on another - perfect for client-server or distributed systems)
Feature Building Blocks - Clean base feature classes you only need to implement for your specific System Under Test (SUT):
- SingleCreatorFeature, SingleReaderFeature, SingleUpdaterFeature
- MultipleReaderFeature
- Support for both direct devices and separate “Point of Truth” verification devices
Strong Data Modeling (powered by balderhub-data) - Pydantic-style DataItem models with automatic handling of:
- Mandatory / optional fields
- Default values
- Special markers: UNSET and NOT_DEFINABLE
- Smart automatic example generation (valid, invalid, and edge-case data)
Validation & Utilities - Comprehensive helpers for before/after state checks, field-level comparison, diffing, success/error handling, and cross-device consistency verification.

Installation

You can install the latest release with pip:

python -m pip install balderhub-crud

Check out the documentation

If you need more information, checkout the balderhub-crud documentation.

License

This BalderHub package is free and Open-Source

Distributed under the terms of the MIT license

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Publisher: python-publish.yml on balder-dev/balderhub-crud

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Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
- Subject name: balderhub_crud-0.0.1b13.tar.gz
- Subject digest: 4277a1acad0b219a2741e0b2e94ba9055de0e212e5e7f80ea30248e68e45bacb
- Sigstore transparency entry: 2172045220
- Sigstore integration time: Jul 15, 2026
Source repository:
- Permalink: balder-dev/balderhub-crud@c76154a2ddf05660da5caf8e4944914260c498d4
- Branch / Tag: refs/tags/0.0.1b13
- Owner: https://github.com/balder-dev
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- Publication workflow: python-publish.yml@c76154a2ddf05660da5caf8e4944914260c498d4
- Trigger Event: release