How can I run all test files that are in different folders using mocha?

I want to run my mocha test using npm test the problem is that the tests may vary their location.

The locations may be lib/modules/somefolder/test/*-test.js or lib/modules/somefolder/anotherfolder/test/*-test.js

Currently my test script is like this node_modules/.bin/mocha lib/modules/*/test/*-test.js --reporter spec but this won't find the test files located in the second location.

Is there any way to find the tests in both locations?