Exports

The Exports interface allows for organizing tests in a modular fashion. It is particularly useful in larger projects where test suites can be segmented into different files.

Note

The Exports interface is not supported in browser environments. This limitation arises because browsers handle module exports differently from Node.js. If you intend to run tests in a browser, consider using the BDD or TDD interfaces, which are fully supported.

The Exports interface is much like Mocha’s predecessor expresso. The keys before, after, beforeEach, and afterEach are special-cased, object values are suites, and function values are test-cases:

module.exports = {
  before: function () {
    // ...
  },

  Array: {
    "#indexOf()": {
      "should return -1 when not present": function () {
        [1, 2, 3].indexOf(4).should.equal(-1);
      },
    },
  },
};