`npm run test` failed but `ng test` run successful

Issue

I don't know why ng test is run successful, and npm run test is failed

package.json

{
  "name": "fe-patient",
  "version": "0.0.1",
  "author": "Ionic Framework",
  "homepage": "https://ionicframework.com/",
  "scripts": {
    "commit": "git cz",
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
...

npm run test should do the same with ng test...

What i have tried and the issue still exists:

• npm cache clean --force
• rm -rf node_modules
• rm -rf package-lock.json
• npm install
• npm run test

Angular 12+, npm 6.14.8, ionic 5+

Solution

Finally find the root cause...

Current we haven't written any UT (spec files), so we delete all the spec files.

ng test will show successful if there is 0 spec file,

npm run test will give an error if there is 0 spec file.

Update Better solution:

Update config in karma.conf.js will also work:

failOnEmptyTestSuite: false,

Answered By - huan feng