rewinfrey

shared_examples_for 'a user search engine' do

  let(:payment_service) { service_factory.create(:payment) }
  let(:db)              { search_memory_repository }

  def ids(users)
    users.map { |user| user[:id] }
  end

  def user_search(options)

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describe Payment::Coupon::RecordCoupon do
  let(:coupon) { double(:coupon) }
  let(:coupon_repository) { double(:coupon_repository) }
  let(:vendor_subscription) { double(:vendor_subscription) }
  let(:sign_up) { double(:sign_up, :subscription => subscription) }
  let(:subscription) { double(:subscription) }

  subject { described_class.new(coupon_repository) }

  context '#execute' do

rewinfrey

# source: http://bugroll.com/ratcheting.html
# spec/ratchets/maximum_number_of_callbacks_allowed_spec.rb
describe "The maximum number of callbacks allowed" do
  it "cannot exceed Ratchets::MAX_CALLBACKS" do
    expect(Ratchets::CallbackCounter.count).to be <= Ratchets::MAX_CALLBACKS
  end 
end

# lib/ratchets.rb
module Ratchets

rewinfrey

stack_trace = %q(cucumber features/account/features/reset_password.feature:39 # Scenario: Friend enters invalid token
cucumber features/account/features/koalas/account_settings.feature:19 # Scenario: Koala clicks to save updated account info, passes validation
cucumber features/account/features/koalas/account_settings.feature:37 # Scenario: Koala clicks to cancel
cucumber features/account/features/koalas/account_settings.feature:57 # Scenario: Koala clicks to edit password
cucumber features/account/features/koalas/account_settings.feature:67 # Scenario: Koala clicks to cancel account
cucumber features/account/features/koalas/account_settings.feature:81 # Scenario: Koala confirms account cancelation
cucumber features/account/features/koalas/account_settings.feature:91 # Scenario: Koala cancels account cancelation
cucumber features/account/features/koalas/dashboard.feature:19 # Scenario: Koala can differ replied from unreplied messages by specific icon
cucumber features/account/features/koalas/dashboard.feature

rewinfrey

class User; end
class Candidate < User; end
class Owner < User; end

Candidate.ancestors # => [Candidate, User, Object, Kernel, BasicObject]
Owner.ancestors # => [Owner, User, Object, Kernel, BasicObject]
User.ancestors # => [User, Object, Kernel, BasicObject]

class Candidate
  class << self

rewinfrey

# This is not as sophisticated as ActiveSupport's `strip_heredoc`, but is the simplest solution for 
# removing leading whitespace.
# For more nuanced whitespace removal, take a look at http://apidock.com/rails/String/strip_heredoc

puts "With leading whitespace:"
puts <<-TEST
      This is a test.
      To remove leading spaces.
      From Ruby's heredoc operator.
     TEST

rewinfrey

Notes from Tuning Legacy Rails App: How to Make an Elephant Sprint

###Measuring performance

• Monitor the values of specific code paths and graph them to see performance over time (response times as one example metric)
• Automated tests that measure performance can fail based on a set threshold
  • If a given code path exceeds 20% of the existing response time, then the automated test fails, alerting ops and devs that a recent code change has negatively impacted performance beyond an pre-defined SLA or threshold
• Need a production like environment
• Make that performance test environment exclusive to performance testing (don't let regular usage or QA usage affect the test results)
• Using NewRelic to compare boxes against each other

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;;
;; NS CHEATSHEET
;;
;; * :require makes functions available with a namespace prefix
;;  and optionally can refer functions to the current ns.
;;
;; * :import refers Java classes to the current namespace.
;;
;; * :refer-clojure affects availability of built-in (clojure.core)
;;   functions.

rewinfrey

class Location < Struct.new(:city,
                            :state,
                            :zipcode)
                            
  def initialize(from_hash)
    super(*from_hash.values_at(*members))
  end
    
  def display_city
    city.capitalize

rewinfrey

# Regular comments are explanations
# Comments prefaced with '$' indicate commands to be entered in the terminal (operating system is assumed to be OSx 10.10.1)
# Comments prefaced with 'postgres=#' indicate commands to be entered in the postgresql console
# Ruby code uncommented is meant to be added to the specified file and can be copied and pasted (although I strongly encourage you to type it yourself)

# I'm using Rails 4.2 for this example
# $ gem install rails -v 4.2

# I'm assuming the use of postgresql for this application
# Let's initialize our meditation DB