restcheck

restcheck is a REST API fuzzing tool based on property-based testing techniques. It provides an interface for the automatic generation and execution of integration test suites that validate the behaviour of a REST API against an OpenAPI 3.0 specification.

Quickstart

Get an OpenAPI 3.0 specification for the API you want to test. For example: users.json.
Add restcheck as a project plugin in your rebar3 project.

{project_plugins, [
    {restcheck, {git, "https://github.com/nomasystems/restcheck.git", {branch, "main"}}}
]}.

Configure it within the restcheck key of your rebar.config.

{restcheck, [
    {spec_path, string()},
    {spec_parser, module()}, % defaults to erf_oas_3_0
    {pbt_backend, module()}, % defaults to restcheck_triq
    {host, string()}, % defaults to "localhost"
    {port, inet:port_number()}, % defaults to 8080
    {ssl, boolean()}, % defaults to false
    {auth, restcheck_client:auth()}, % disabled by default
    {timeout, pos_integer()}, % defaults to 5000
    {num_requests, pos_integer()}, % defaults to 5000
    {log_file, string()} % disabled by default
]}.

Run rebar3 restcheck and check your API behaviour.

$ rebar3 restcheck
===> Analyzing applications...
===> Compiling restcheck
===> Running restcheck for Users REST API
+-----+--------------------------------+--------------------------------+
| OK? |                    OperationId |                    Description |
+-----+--------------------------------+--------------------------------+
|  ✅ |                    create_user |                        Success |
|  ✅ |                       get_user |                        Success |
|  ✅ |                    delete_user |                        Success |
+-----+--------------------------------+--------------------------------+
===> All restcheck tests passed for Users REST API. (3/3)

Choosing a custom property-based testing framework

By default, restcheck provides a built-in implementation for its property-based testing features using the triq library. However, if you have specific requirements or prefer to use a custom property-based testing framework, restcheck offers flexibility in selecting your own implementation.

To choose a custom property-based testing framework, follow these steps:

Implement the restcheck_backend behaviour in your custom module.
Update the pbt_backend configuration key in your rebar.config file with the module name of your custom implementation.

Contributing

We ❤️ contributions! Please feel free to submit issues, create pull requests or just spread the word about restcheck in the open-source community. Don't forget to check out our contribution guidelines to ensure smooth collaboration! 🚀

Support

If you need help or have any questions, please don't hesitate to open an issue or contact the maintainers directly.

License

restcheck is released under the Apache 2.0 License. For more information, please see the LICENSE file.

This project uses OpenAPI specification (OAS) schemas and examples, which are licensed under the Apache 2.0 license. See the associated LICENSE file for more information.