genomoncology
rigor
Python

HTTP-based DSL for for validating RESTful APIs

Last updated May 8, 2026
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README

Rigor is a Domain Specific Language (DSL) and Command Line Interface (CLI) for making HTTP requests, extracting data, and validating responses. The main intent of Rigor is to be an HTTP-based API (e.g. REST) Testing Framework for automated functional or integration testing.


Requirements

  • Python 3.12+

Installation

Install using pip...

pip install rigor

Feature List

  • Functional testing without the need to write glue code. (e.g. Cucumber)
  • Runs in either synchronous ([requests]) or asynchronous ([aiohttp]) mode.
  • YAML-based format for Test Case files for easy test creation and maintenance.
  • Response transformation using [jmespath.py] to reduce test fragility.
  • Pretty HTML test execution reports using [cucumber-sandwich].
  • [Swagger] path coverage report to ensure API surface area coverage.
  • Syntax highlighted console or JSON-based logging using [structlog].
  • Profiles for switching between different environments and settings.
  • Tags and CLI options for selectively executing subsets of the test suite.
  • Scenario Outlines (i.e. Tables) for cases with numerous scenarios.
  • Beautiful Soup parsing for extraction from HTML data.
  • Proper error code ($?) on suite success (0) or failure (!0)
  • Case-scenario unique identifier (uuid) for managing session and race conditions.

Command Line Interface (CLI) Options

$ rigor --help Usage: rigor [OPTIONS] [PATHS]...

Options: --profile TEXT Profile name (e.g. test) --host TEXT Host name (e.g. http://localhost:8000) -i, --includes TEXT Include tag of cases. (e.g. smoke) -e, --excludes TEXT Exclude tag of cases to run. (e.g. broken) -p, --prefixes TEXT Filter cases by file prefix. (e.g. smoke_) -e, --extensions TEXT Filter cases by file extension. (e.g. rigor) -c, --concurrency INTEGER # of concurrent HTTP requests. (default: 5) -o, --output TEXT Report output folder. -q, --quiet Run in quiet mode. (warning/critical level only) -v, --verbose Run in verbose mode. (debug level logging) -j, --json JSON-style logging. -h, --html Generate HTML report. -g, --coverage Generate Coverage report. -r, --retries INTEGER # of retries for GET calls only. (default: 0) -s, --sleep INTEGER Retry sleep (seconds multiplied by retry). (default: 60) -f, --retry_failed Retries all failed scenarios at the end. --version Logs current version and exits. --help Show this message and exit.

Simple Example

(rigor) /p/tmp> cat test.rigor name: Simple case.

steps: - description: Simple step. request: host: https://httpbin.org path: get

(rigor) /p/tmp> rigor test.rigor --html 2018-02-08 13:18.06 [info ] no config file not found [rigor] paths=('test.rigor',) 2018-02-08 13:18.06 [info ] collecting tests [rigor] cwd=/private/tmp paths=['test.rigor'] 2018-02-08 13:18.06 [info ] tests collected [rigor] queued=1 skipped=0 2018-02-08 13:18.06 [info ] execute suite complete [rigor] failed=0 passed=1 timer=0.119s 2018-02-08 13:18.07 [info ] launching browser [rigor] reportpath=/var/folders/b/2hlrn7930x81r009mfzl50m0000gn/T/tmps8d7nn_/html-2018-02-08-08-18-06/cucumber-html-reports/cucumber-html-reports/overview-features.html

![list]

![detail]

Object Model

  • suite: set of cases that gets built dynamically based on cli arguments.
  • case: set of scenarios and steps in a .rigor file.
  • scenario: namespace for 1 run of case steps.
  • step: request with response extract, validate, etc.
  • iterate: repeats an individual step by iterating through iterable.
  • request: http call (get, post, etc.) to path with parameters, data, or uploads
  • extract: extract nested data from a response into a variable available to following steps.
  • validate: check an actual value against an expected value using a comparator.
  • transform: using [jmespath] to shape a JSON response into a specific format.
![objects]

Comparators

Comparators are used by the validation phase of each step to check whether an actual value is returning as expected. See the [comparisons.rigor] example for more details.

  • equals
  • not equals
  • same
  • not same
  • greater than
  • less than
  • greater than or equals
  • less than or equals
  • type
  • in
  • not in
  • regex
  • subset
  • not subset
  • length
  • superset
  • not superset
  • keyset
  • not keyset
  • contains
  • not contains

Related Projects

  • [Tavern] is an extremely similar project that was released a little too late for us to use.
  • [Pyresttest] was the first library we used before deciding to roll our own testing framework.
  • [Click] is the library used to build out the command-line options.
  • [Related] is the library used for parsing the YAML test suite into an Python object model.

More Examples

More examples can be found by reviewing the [tests/httpbin/] folder of this project.

License

The MIT License (MIT) Copyright (c) 2017 [Ian Maurer], [Genomoncology LLC]

[Click]: http://click.pocoo.org/ [PyRestTest]: https://github.com/svanoort/pyresttest/ [Swagger]: https://swagger.io/specification/ [Tavern]: https://taverntesting.github.io/ [aiohttp]: http://aiohttp.readthedocs.io/en/stable/ [cucumber-sandwich]: https://github.com/damianszczepanik/cucumber-sandwich [jmespath.py]: https://github.com/jmespath/jmespath.py [requests]: http://docs.python-requests.org/en/master/ [structlog]: http://www.structlog.org/en/stable/ [tests/httpbin/]: ./tests/httpbin [comparisons.rigor]: ./tests/httpbin/comparisons.rigor [list]: ./.images/list.png [detail]: ./.images/detail.png [objects]: ./.images/objects.png [Genomoncology LLC]: http://genomoncology.com [Ian Maurer]: https://github.com/imaurer [jmespath]: jmespath.org

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