Thursday, July 1st, 2010
Keep your vows; Keeping wed to Node
<p>Vows can be a beautiful thing. Alexis Sellier of LESS fame, is becoming an open source star. This time around he brings us Vows an asynchronous-friendly behavior driven development framework for Node.js.
Write you BBD specs like this:
- // division-by-zero-test.js
- var vows = require('vows'),
- assert = require('assert');
- // Create a Test Suite
- vows.describe('Division by Zero').addBatch({
- 'when dividing a number by zero': {
- topic: function () { return 42 / 0 },
- 'we get Infinity': function (topic) {
- assert.equal (topic, Infinity);
- }
- },
- 'but when dividing zero by zero': {
- topic: function () { return 0 / 0 },
- 'we get a value which': {
- 'is not a number': function (topic) {
- assert.isNaN (topic);
- },
- 'is not equal to itself': function (topic) {
- assert.notEqual (topic, topic);
- }
- }
- }
- }).run(); // Run it
and you get a very nice report card out of the other end:
With macros you end up with very nice DSL syntax such as:
- { 'GET /': {
- topic: api.get('/'),
- 'shoud respond with a 200 OK': assertStatus(200)
- },
- 'POST /': {
- topic: api.post('/'),
- 'shoud respond with a 405 Method not allowed': assertStatus(405)
- },
- 'GET /resources (no api-key)': {
- topic: api.get('/resources'),
- 'shoud respond with a 403 Forbidden': assertStatus(403)
- },
- 'GET /resources?apikey=af816e859c249fe'
- topic: api.get('/resources?apikey=af816e859c249fe'),
- 'shoud return a 200 OK': assertStatus(200),
- 'should return a list of resources': function (res) {
- assert.isArray (res.body);
- }
- }
- }
- // or even
- {
- 'GET /': respondsWith(200),
- 'POST /': respondsWith(405),
- 'GET /resources (no key)': respondsWith(403)
- }
The website itself goes into exquisite detail on the install process, sample usage, and more. The website also happens to be beautiful itself, and full of HTML5 markup to boot.
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3.3 rating from 3 votes
Sexy site and sexy-looking tool :) Javascript is an awesome language.