Test driven node (without testing frameworks)

Question

I have my code:

var User = function() {
    ...
}

and the test code using IIFE:

(function() { // test new user
    var user = new User();
    if (typeof user === 'undefined') {
        console.log("Error: user undefined");
    }
    ...
}());

both in the same js file. Works great! But, as the program grows, this is becoming too refractory for me to manage, as I have a piece of test code for every piece of business logic.

I've been taught to keep all my js in the same file, (minified is good) in production, but is there a best-practical way to keep my test code in a different file during development?

I was thinking I could use a shell script to append the test code to the production code when I want to run the tests, but I'd prefer a cross-platform solution.

I don't want or need a framework solution, I want to keep it light -- does node have anything built-in for this sort of thing?

Actually it's better to split up your code over multiple files, you can always concatenate it together for production. Y — Joel Harkes
– Joel Harkes, Commented Jan 7, 2017 at 18:30
But to answer your question, just do it yourself by placing a placeholder in every file and use a simple replace command. With nodejs, making a command line tool is super easy! (Or just make a bash script) — Joel Harkes
– Joel Harkes, Commented Jan 7, 2017 at 18:31

Kornelia Kobiela · Accepted Answer · 2017-01-07 18:35:38Z

1

Node has two expressions for this case. First:

module.exports = name_of_module;

Which is to export module for example function, object or something similar. And the second:

var module_name = require('Path/to/module');

to import it from other file. If you want to export IIFE you must assign it to global variable and module.export name of variable.

answered Jan 7, 2017 at 18:35

Kornelia Kobiela

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