Each time we try to run Jest unit tests we have to run npm test. Is there any way with which I can run these tests when I'm building my application (at time of npm start or npm build)

Each time we try to run Jest unit tests we have to run npm test. Is there any way with which I can run these tests when I'm building my application (at time of npm start or npm build)

• javascript
• html
• reactjs
• react-redux
• jestjs

Share Improve this question Follow edited Nov 1, 2018 at 23:16 skyboyer 23.8k77 gold badges6262 silver badges7171 bronze badges asked Oct 11, 2018 at 8:23 AS1994AS1994 2311 gold badge11 silver badge55 bronze badges 1

• just use another terminal :) – Tu Nguyen Commented Oct 11, 2018 at 8:28

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3 Answers 3

Sorted by: Reset to default 2

You can bine multiple steps in package.json like this:

  "scripts": {
    "start": "sh start.sh",
    "test": "sh test.sh",
    "test_start": "npm test && npm start"
  }

while running your test, simply run

npm run test_start

This will ensure that your test is successful before it runs start.

---

Hope this helps!

Yes you can add the npm test step in your start mand in your package.json, like this for example:

"scripts": {
  "start": "npm run test && node server.js"
  "test": "jest"
}

I have these in my package.json and its really useful to have jest coverage will give you a detailed report on whether any of your files are missing tests.

"test": "jest --testPathPattern='/App/*'",
"test:coverage": "jest --coverage && open coverage/lcov-report/index.html || xdg-open coverage/lcov-report/index.html",
"test:updateSnapshot": "jest --updateSnapshot"