nautilus-testkit

Test utilities and data management for NautilusTrader.

The nautilus-testkit crate provides testing utilities including test data management, file handling, and common testing patterns. This crate supports testing workflows across the entire NautilusTrader ecosystem with automated data downloads and validation:

• Test data management: Automated downloading and caching of test datasets.
• File utilities: File integrity verification with SHA-256 checksums.
• Path resolution: Platform-agnostic test data path management.
• Precision handling: Support for both 64-bit and 128-bit precision test data.
• Common patterns: Reusable test utilities and helper functions.

NautilusTrader

NautilusTrader is an open-source, production-grade, Rust-native engine for multi-asset, multi-venue trading systems.

The system spans research, deterministic simulation, and live execution within a single event-driven architecture, providing research-to-live semantic parity.

Feature flags

This crate provides feature flags to control source code inclusion during compilation:

• python: Enables Python bindings from PyO3.
• high-precision: Enables high-precision mode to use 128-bit value types.
• extension-module: Builds as a Python extension module.

Documentation

See the docs for more detailed usage.

License

The source code for NautilusTrader is available on GitHub under the GNU Lesser General Public License v3.0.

NautilusTrader™ is developed and maintained by Nautech Systems, a technology company specializing in the development of high-performance trading systems. For more information, visit https://nautilustrader.io.

Use of this software is subject to the Disclaimer.

© 2015-2026 Nautech Systems Pty Ltd. All rights reserved.