CODEWITHSUNDEEP
testingmocha.jschaijsdom
gabaum10
gabaum10

Reputation: 3827

Mocha and jsdom - How to set a window variable

I know you're not supposed to do this, but I'm trying to write some tests with legacy code still using requirejs that have a few window variables floating around.

Basically I'm trying to write a mocha test and include some predefined global variables that a different file would use later. I'm trying to do the following, but it seems the global variable "container" isn't populated when accessing it later. 

global.document = require('jsdom').jsdom('<html></html>');
global.window = document.defaultView;
global.$ = require('jquery')(window);

// this should be available everywhere as far as I can tell...
global.container= {};
global.window.container= global.container;

// legacy scripts still using requirejs, so we need to load the require config here
var requirejs = require('testing-setup').requirejs;

// chai is nice
require('chai').should();

describe('model tests', function () {
    var model;

    // before we begin the tests, we need to require in all the necessary modules
    before(function (done) {
        window.container= {
            dateFormat: false
        };

        requirejs(['Model', 'common', 'date'], function (Model) {
            // load some dummy data out of a file
            model= new Model(require('./test-data.js').item);
            done();
        });
    });

    // run some more tests down here, I'll spare you those
});

The script being loaded called "common" above has a reference to the global "container" object that lives on the window. Apparently what I have is not correct. Is there no way to set up a shared global variable in jsdom? I know it's not the standard way of doing things, so please spare the lectures. Refactoring all that legacy code right now is not really a feasible option.

Upvotes: 0

Views: 2170

Answers (1)

gabaum10
gabaum10

Reputation: 3827

Ah, it turns out this is the correct way of doing it. It appears the jsdom/nodejs differentiate the difference between window and global. If you want something to be available everywhere in every file in that session, it needs to be on the global namespace. The window is explicitly window.

Upvotes: 1

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