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assert
assert_block
assert_empty
assert_equal
assert_in_delta
assert_in_epsilon
assert_includes
assert_instance_of
assert_kind_of
assert_match

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I'm a fan of MiniTest::Spec. It strikes a nice balance between the simplicity of TestUnit and the readable syntax of RSpec. When I first switched from RSpec to MiniTest::Spec, one thing I was worried I would miss was the ability to add matchers. (A note in terminology: "matchers" in MiniTest::Spec refer to something completely different than "matchers" in RSpec. I won't get into it, but from now on, let's use the proper term: "expectations").

Understanding MiniTest::Expectations

Let's take a look in the code (I'm specifically referring to the gem, not the standard library that's built into Ruby 1.9):

# minitest/spec.rb

module MiniTest::Expectations

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namespace :deploy do
  task :setup_solr_data_dir do
    run "mkdir -p #{shared_path}/solr/data"
  end
end

namespace :solr do
  desc "start solr"
  task :start, :roles => :app, :except => { :no_release => true } do 
    run "cd #{current_path} && RAILS_ENV=#{rails_env} bundle exec sunspot-solr start --port=8983 --data-directory=#{shared_path}/solr/data --pid-dir=#{shared_path}/pids"

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# Simple Start and Stop tasks for your Solr server.
# 1 - Download your Solr from http://www.apache.org/dyn/closer.cgi/lucene/solr/ and extract it somewhere
# 2 - Set the :solr_path with the full path to the Solr "example" dir
#
# NOTES: 
# - sunspot_solr gem must be in your Gemfile
# - It will run the "example" Jetty-embed Solr server (start.jar)
# - It will automatically pick your project Solr config from your "project_path/solr" with the Sunspot schema and files.

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# Writing readable ruby


# The bad way
def to_hash
  hash = {}
  @reports.each do |report|
    hash.merge! report.to_hash
  end
  hash

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Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

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class Category < ActiveRecord::Base
  has_many :children, :class_name => "Category", :dependent => :destroy, :foreign_key => "parent_id"
  belongs_to :parent, :class_name => "Category"
end

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# En el model.rb, nota que cambie created_at DESC por ASC
has_many :image_models, :as => :owner, :dependent => :destroy, :order => 'created_at ASC'

# agrega este metodo en le modelo model.rb
def first_image_permalink
  image = image_models.first
  image.permalink if image && !image.document_file_name.blank?
end

#Finalmente de la vista se llamaria asi

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<% @models.each do |model| %>
      <% if model.image_models.first %>
        <% unless model.image_models.first.document_file_name.blank? %>
           <%= image_tag model.image_models.first.permalink %>
        <% end %>
      <% end %>
<% end %>

#Cambiar en el model.rb
has_many :image_models, :as => :owner, :dependent => :destroy, :order => 'created_at DESC'

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FactoryGirl.define do
  sequence :email do |n|
    "user#{n}@example.com"
  end

  factory :user do
    email
    password "test"
    aliased_as :author
  end