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POHow does one unit test routes with Express?
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copied!<p>I'm in the process of learning Node.js and have been playing around with <a href="http://expressjs.com" rel="noreferrer">Express</a>. Really like the framework;however, I'm having trouble figuring out how to write a unit/integration test for a route.</p> <p>Being able to unit test simple modules is easy and have been doing it with <a href="http://visionmedia.github.com/mocha/" rel="noreferrer">Mocha</a>; however, my unit tests with Express fail since the response object I'm passing in doesn't retain the values.</p> <p><em>Route-Function Under Test (routes/index.js):</em></p> <pre><code>exports.index = function(req, res){ res.render('index', { title: 'Express' }) }; </code></pre> <p><em>Unit Test Module:</em></p> <pre><code>var should = require("should") , routes = require("../routes"); var request = {}; var response = { viewName: "" , data : {} , render: function(view, viewData) { viewName = view; data = viewData; } }; describe("Routing", function(){ describe("Default Route", function(){ it("should provide the a title and the index view name", function(){ routes.index(request, response); response.viewName.should.equal("index"); }); }); }); </code></pre> <p>When I run this, it fails for "Error: global leaks detected: viewName, data".</p> <ol> <li><p>Where am I going wrong so that I can get this working?</p></li> <li><p>Is there a better way for me to unit test my code at this level?</p></li> </ol> <p><strong>Update</strong> 1. Corrected code snippet since I initially forgot "it()".</p>

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