Is it possible to set environment variables for exactly one test?
<p>Given something like this:</p>

<pre><code>it('uses env variables correctly', function(done) {
    assert.equal(process.env.x * process.env.y, 10);
});
</code></pre>

<p>I would like to set the <code>x</code> and <code>y</code> environment variable for this one test only. Is that possible?</p>