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GPIO-mock test nodejs

test gpio in a container (without them being physically available)

idea/initial mock forked from: https://github.com/sitepoint-editors/TddWithGpio

Article: https://www.sitepoint.com/getting-started-with-the-raspberry-pi-gpio-pins-in-node-js/

run dev

docker run -it --rm -v $(pwd):/app -w /app node:lts bash

followed by

npm install
npm run test

Jest

https://jestjs.io/docs/using-matchers

TODO

check this out: https://stackoverflow.com/questions/50066138/mock-fs-function-with-jest

is this going to be a problem? https://stackoverflow.com/questions/62568294/nodejs-fs-watch-inside-docker-container-detects-changes-twice