Mocha --watch with Docker - docker

Question

I'm trying to use --watch on mocha but when I save code source or test source, it doesn't re run tests. I have an enviroment using docker-compose with node:16-slim image and my tests run inside it. This same config works with bare metal enviroment.
The dev docker image run the app with:
USER node
CMD ["npm", "run", "dev"]
And this npm script is:
"dev": "npx nodemon --inspect=0.0.0.0:1080 src/index.js",
test npm script:
"test:tdd": "cross-env NODE_ENV=test mocha --config .mocharc.tdd.js",
.mocharc.tdd.js:
module.exports = {
"reporter": "dot",
"watch": true,
"watch-ignore": [],
"file": 'test/common.js',
"recursive": true
};
output:
> test-app#1.0.0 test:tdd
> cross-env NODE_ENV=test mocha --config .mocharc.tdd.js
!
0 passing (6ms)
1 failing
1) Events
abc:
MissingParamError: Missing param: Data
at updated (src/app/events.js:8:22)
at Context.<anonymous> (test/app/events.test.js:13:28)
ℹ [mocha] waiting for changes...
Versions:
➜ test-app git:(master) ✗ npx mocha --version
10.0.0
➜ test-app git:(master) ✗ node --version
v16.15.0
➜ test-app git:(master) ✗ npx nodemon --version
2.0.15
What can I do to fix this? Thanks in advance =)

Answer 1

I solved it. I added watch-files attr to config file.
mocharc.tdd.js:
module.exports = {
"reporter": "dot",
"watch": true,
"watch-files": ['test/**/*.js', 'src/**/*.js'],
"watch-ignore": ['node_modules'],
"file": 'test/common.js',
"recursive": true
};