When working in mocha, oftenly you don't want to run all the test cases. Mocha provides you the feature to specify which exactly you want to run.

Running a single test file

Using mocha-cli you can easily run a single. This can be accomplished with the grep option when running the mocha command.

Syntax:

$ mocha --grep users.js

or

$ mocha test users.js

Running a single test

If you want to run a single test you can use the .only() method:-

it.only(function () {
  // this test will run
});
it(function () {
  // this test will be skipped
});

Skipping a test

If you need to skip a test case, you can use the .skip() method like as follows:

it.skip(function () {
  // this test will be skipped
});
it(function () {
  // this test will be executed
});