Constable replaces RSpec/Minitest for Rails apps that want tests to be fast and non-flaky by construction. Every test is isolated by default, nondeterminism is a lint error rather than a CI surprise, and every escape hatch is reported until someone deals with it. Existing RSpec and Minitest suites adopt it with a one-line change per file and zero rewriting -- cold cases run verbatim through their original engine while native cases run under strict rules, side by side in one run. Ships with a case-file DSL (investigate/witness/briefing/docket), transactional isolation, flake history with rename-surviving content-hash identity, a jail and parole docket for legacy red suites, warrants for automatic flake detection, diff-based coverage, parallel workers, git-diff test selection, and a RuboCop extension. The gem is published as "constable-rails"; everything inside it -- the module, the CLI, the config directory -- is simply "constable".

Required Ruby Version

>= 3.1.0

Authors

Ray Hughes

Versions

  1. 2.1.1

    1. source

      1. 2.1.1 source September 09, 2026 (211 KB)
  2. 2.1.0

    1. source

      1. 2.1.0 source September 09, 2026 (206 KB)
  3. 2.0.0

    1. source

      1. 2.0.0 source September 09, 2026 (202 KB)
  4. 1.4.2

    1. source

      1. 1.4.2 source September 09, 2026 (199 KB)
  5. 1.4.1

    1. source

      1. 1.4.1 source September 09, 2026 (197 KB)
Show all versions (14 total)

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