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Pytest Databases

Ready-made database and cloud emulator fixtures for your pytest tests.

Features

• 🚀 Clientless container fixtures with zero required database driver dependencies in the base package
• 🔄 Support for 20+ relational, NoSQL, analytical, streaming, and cloud emulator services
• 🐳 Docker and Podman runtime support with deterministic session ownership and pytest-xdist isolation
• ⚡ Fast readiness checks using standard library probes and in-container CLI tools
• 🔧 Configurable via pytest CLI options, pyproject.toml, and environment variables

pytest-databases manages the startup and shutdown of database and cloud emulator services in Docker or Podman containers. The following services are available:

• PostgreSQL / pgvector / ParadeDB: PostgreSQL 11–18, pgvector, and ParadeDB
• Google AlloyDB Omni: PostgreSQL-compatible AlloyDB Omni 15–18
• MySQL: MySQL 5.6, 5.7, 8.0, 8.4 LTS, 9.6, and 9.7
• MariaDB: MariaDB 11.3, 11.4 LTS, 11.8 LTS, 12.2, 12.3, and 13.0
• Dolt: Versioned MySQL-compatible database
• Oracle Database: Oracle 18c XE, 23ai Free, and Autonomous Database Free (23ai) with wallet extraction
• Microsoft SQL Server: SQL Server 2022 and 2025
• IBM Db2: Db2 Community Edition 12.1 (icr.io/db2_community/db2:12.1.5.0)
• Google Cloud Spanner: Cloud Spanner emulator
• Google BigQuery: BigQuery emulator (goccy/bigquery-emulator)
• Snowflake: Embucket Snowflake-compatible SQL emulator (embucket/embucket:0.2.2)
• CockroachDB: Distributed SQL database
• YugabyteDB: Distributed PostgreSQL-compatible database
• MongoDB: Document database
• GizmoSQL: Apache Arrow Flight SQL service (DuckDB and SQLite backends)
• Redis / Valkey / Dragonfly / KeyDB: In-memory key-value stores
• Elasticsearch: Elasticsearch 7, 8, and 9
• Azure Blob Storage: Azurite emulator
• MinIO and RustFS: S3-compatible object storage
• Redpanda: Kafka-compatible streaming platform
• LocalStack: LocalStack-compatible AWS emulator (default image MiniStack ministackorg/ministack:latest)
• Google Cloud Pub/Sub: Cloud Pub/Sub emulator
• RabbitMQ: RabbitMQ 4.3 with the management plugin
• Floci: Floci emulators for AWS, Azure, GCP, and OCI, one container per cloud
• SAP ASE (Sybase): SAP Adaptive Server Enterprise 16.0 (datagrip/sybase:16.0)
• SAP SQL Anywhere: SQL Anywhere 16 (jaschweder/sybase:latest)
• Cloudflare KV, R2, and D1: Miniflare 5 Local Explorer and R2 S3 APIs in a node:22-slim container
• PostgreSQL template databases: build the schema once and clone it per test database ("template" isolation)
• Embedded PostgreSQL: local initdb/postgres binaries without a container runtime (embedded-postgres extra)

Installation

pip install pytest-databases

Quick Start

• Add to your pytest conftest.py:

pytest_plugins = ["pytest_databases.docker.postgres"]

• Use in your tests:

from pytest_databases.docker.postgres import PostgresService
import psycopg


def test_one(postgres_service: PostgresService) -> None:
    with psycopg.connect(
        f"postgresql://{postgres_service.user}:{postgres_service.password}@{postgres_service.host}:{postgres_service.port}/{postgres_service.database}",
        autocommit=True,
    ) as conn:
        result = conn.execute("SELECT 1")
        assert result

Documentation

Full documentation is available at https://litestar-org.github.io/pytest-databases/latest/

Contributing

Contributions are welcome! Please read our Contributing Guide for details on our code of conduct and the process for submitting pull requests.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgments

• The Litestar Framework team
• The pytest community