How to Stub External Services in Tests
Requests to external services during test runs can cause several issues: Tests failing intermittently due to connectivity issues. Dramatically slower test suites. Hitting API rate limits on 3rd party sites (e.g. Twitter). Service may not exist yet (only documentation for it). Service doesn’t have a sandbox or staging server. When integrating with external services we want to make sure our test sui
Sandi Metz' Rules For Developers
Back in January, Sandi Metz introduced her rules for developers in a Ruby Rogues podcast episode episode. Around the time Sandi’s rules were published, the team I am on was starting a new project. This post details the experience of that team applying Sandi’s rules to the new application. The rules _There are four rules._ Here are the rules: Classes can be no longer than one hundred lines of code.
How to Test Sinatra-Based Web Services
Sinatra is a fantastic lightweight framework for building web services. We’ll use it as the application framework for the HTTP endpoints in our Service Oriented Architecture. The testing approach will be in-process, which means that the test suite is running in the same Ruby process as the web service. This eliminates the need to run an external HTTP web server. Application structure Unlike Rails,
Object-Oriented File Importing and Parsing
The following is an example of file importing and parsing in Ruby using object-oriented techniques such as duck typing and dependency injection. Inject a CSVParser dependency into a the Importer # app/controllers/contact_imports_controller.rb: class ContactImportsController < ApplicationController def new @importer = Importer.new end def create @importer = Importer.new( parser: CSVParser.new(impor
8 New Steps for Fixing Other People's Code
Way back in mid-2007, when Rails 1.2 was the new hotness and GitHub was still a year away from crawling out of the primordial internet soup, prolific open source contributor Dr Nic wrote an article titled “8 steps for fixing other people’s code”. It offers excellent general advice, but the workflow details are clearly a product of their time: RubyForge, SVN, and .patch files feature heavily. Here
The Hitchhiker's Guide to Riding a Mountain Lion
Update: A better approach is detailed in Laptop Setup for an Awesome Development Environment. Earlier today, OS X Mountain Lion was released for all users in the Mac App Store. As a member of the Mac Developer Program, I decided to tame this wild cat early on, jumping on the beta tester bandwagon since the Developer Preview 4. Here are some of the things you should consider as you make the switch
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Running Specs From Vim
Tell, Don't Ask