focha

Mocha wrapper that runs previously failed tests first Failing mocha = Focha

Install

Requires Node version 6 or above.

npm install --save-dev focha

Use

Avoid running all tests just to check if previously failed tests are fixed. If tests fail, focha saves file .focha/.focha.json. On the next run, focha will only run tests listed in this file. Thus the best strategy is to let focha run failing tests and then, if it succeeds let it run all the tests.

You can do this by running it twice. From your CI file execute the second command using && and pass --all flag to run all the tests.

$(npm bin)/focha src/*-spec.js && $(npm bin)/focha --all src/*-spec.js

or simple use NPM script in package.json

{
  "scripts": "focha src/*-spec.js && focha --all src/*-spec.js"
}

If the first command finds nothing, or failing tests pass, the second command will run all the tests. If the failing tests are still failing, the second command will not execute.

Service

Instead of local JSON file, focha can save and load failed tests in a REST API, just pass the end point via SERVER variable. Example service implementation bahmutov/test-results-server.

configuration

• SERVER url of the remote server that receives and returns failed tests
• API_KEY for this client on the server

Debug

Run with DEBUG=focha environment variable

Example

See example project focha-test with its test history

• .travis.yml shows how tests are setup
• TravisCI build history where you can see
  • a failing test run #4
  • the next run #5 just executes the single failing test first
  • the run #6 has the problem fixed and runs failing test and then all tests

Related

• rocha - randomizes tests in Mocha to find inter-test dependencies

Small print

Author: Gleb Bahmutov <[email protected]> © 2017

• @bahmutov
• glebbahmutov.com
• blog

License: MIT - do anything with the code, but don't blame me if it does not work.

Support: if you find any problems with this module, email / tweet / open issue on Github

MIT License

Copyright (c) 2017 Gleb Bahmutov <[email protected]>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.