localforage/test/test.callwhenready.js

Offline storage, improved.

/* global beforeEach:true */
this.mocha.setup('bdd');

beforeEach(function(done) {
    var previousDriver = localforage.driver();

    // The API method stubs inserted by callWhenReady must be tested before
    // they are replaced by the driver, which happens as soon as it loads.
    //
    // To ensure that they work when the drivers are loaded asynchronously,
    // we run the entire test suite (except for config tests), but undefine
    // the localforage module and force it to reload before each test, so that
    // it will be initialized again.
    //
    // This ensures that the synchronous parts of localforage initialization
    // and the API calls in the tests occur first in every test, such that the
    // callWhenReady API method stubs are called before RequireJS
    // asynchronously loads the drivers that replace them.
    require.undef('localforage');
    require(['localforage'], function(localforage) {
        localforage.setDriver(previousDriver);
        window.localforage = localforage;
        done();
    });
});