Requirements
– Keeping secrets in the environment is convenient, but not every sub-process can be trusted.
– Fail fast when configuration is missing
Solution
def ENV.delete!(key)
delete(key) || raise(KeyError, "key not found: #{key.inspect}")
end
secret = ENV.delete!('SECRECT')
Engine eager load by default on rails 3, so lets turn that off to save some precious startup time.
# config/environments/test.rb + development.rb config.eager_load = false
# config/application.rb
if !config.eager_load && Rails::VERSION::MAJOR == 3
Rails::Railtie.descendants.each do |railtie|
railtie.class_eval { def eager_load!; end }
end
end
Small little patch, big test improvements 🙂
# do not load every class when using fixtures :all -> speedup ActiveRecord::TestFixtures::ClassMethods.class_eval do def require_fixture_classes(*args) end end
FYI merged Rails PR, will be in Rails 5, maybe 4.2.x 🙂
Problem
By default rails just swallows any exception raised in after_commit blocks.
Solution
Send these exceptions to and exception service to get notified (Airbrake / Rollbar etc).
Gem
https://github.com/grosser/after_commit_exception_notification
Copy-paste
module Foo
module CommittedWithExceptions
def committed!
super
rescue Exception => e # same as active_record/connection_adapters/abstract/database_statements.rb:370
ExceptionService.report("after_commit exception", e)
raise
end
end
end
ActiveRecord::Base.include Foo::CommittedWithExceptions
Problem
Testing against many gemfiles/rubies is painful, Appraisal offers a somewhat working solution but adds new steps/problems.
Solution
Use WWTD by using the gemspec for dependencies (optional for git: or a gemfiles/common.rb)
(Also no longer runs gemfiles that are excluded in travis.yml)
Usage
Code
# Gemfile source "https://rubygems.org" gemspec gem "rails" # newest # Rakefile require 'wwtd/tasks' task default: "wwtd:local" # gemfiles/rails32.gemfile source "https://rubygems.org" gemspec path: "../" gem "rails", "~> 3.2.18" # gemfiles/rails40.gemfile source "https://rubygems.org" gemspec path: "../" gem "rails", "~> 4.0.6" # foo.gemspec ... s.add_runtime_dependency "rails", ">= 3.2.18" # .travis.yml rvm: - 1.9.3 - 2.0.0 - 2.1.2 gemfile: - gemfiles/rails32.gemfile - gemfiles/rails40.gemfile script: "rake test"
Git dependencies
Cannot be specified in gemspec, so we put them in a loadable file.
# all gemfiles
eval(File.read('gemfiles/common.rb'))
# gemfiles/common.rb
gem "foo", git: "https://github.com/bar/foo"
Michael Grosser, the Blog 