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);
      },
    },
  },
};