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Added explanation README for running specific tests

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Change-type: minor
Signed-off-by: Miguel Casqueira <miguel@balena.io>
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Miguel Casqueira 2020-04-28 16:35:21 -04:00
parent 71d3dcf724
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@ -238,6 +238,21 @@ production.
Alternatively, tests will be run when building the image, Alternatively, tests will be run when building the image,
which ensures that the environment is exactly the same. which ensures that the environment is exactly the same.
#### Running specific tests quickly
You can run specific tests quickly with the `test:fast` script by matching with test suites (describe) or test cases (it) using a string or regexp:
```sh
npm run test:fast -- --grep spawnJournalctl
npm run test:fast -- --grep "detect a V2 delta"
npm run test:fast -- --grep (GET|POST|PUT|DELETE)
```
The --grep option when specified will trigger mocha to only run tests matching the given pattern which is internally compiled to a RegExp.
## License ## License
Copyright 2020 Balena Ltd. Copyright 2020 Balena Ltd.