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rack_input = env["rack.input"].read
params = Rack::Utils.parse_query(rack_input, "&")

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:w !sudo tee %

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# Log the query plan for queries taking more than this (works
# with SQLite, MySQL, and PostgreSQL)
config.active_record.auto_explain_threshold_in_seconds = 0.5

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#Model 

@user.should have(1).error_on(:username) # Checks whether there is an error in username 
@user.errors[:username].should include("can't be blank")  # check for the error message 

#Rendering
response.should render_template(:index)

#Redirecting 
response.should redirect_to(movies_path)

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class ApplicationController < ActionController::Base
  rescue_from ActiveRecord::RecordNotFound, with: :handle_not_found

  private

  def handle_not_found
    # ...
  end
end

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http://viget.com/extend/auto-saving-screenshots-on-test-failures-other-capybara-tricks
http://www.elabs.se/blog/53-why-wait_until-was-removed-from-capybara
http://blog.crowdint.com/2013/09/20/poltergeist-and-bootstrap-modals.html
http://spin.atomicobject.com/2013/02/13/capybara-hidden-dom-elements/
http://blog.pixarea.com/2013/02/locking-the-firefox-version-when-testing-rails-with-capybara-and-selenium

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# Get the-1m.csv from Alexa http://www.alexa.com/topsites (right hand side of page)

for i in `head -n 1000 top-1m.csv | cut -f2 -d,`; do 
  echo "Site: $i"; 
  diff  <(curl --ipv4 -s -v --dns-servers 66.x.x.4,66.x.x.4 --url http://$i/ 2>&1 | grep -v "0x" | grep -v "Date: ") <(curl --ipv4 -s -v --dns-servers 8.8.8.8,8.8.4.4 --url http://$i/ 2>&1 | grep -v "0x" | grep -v "Date: ");
done > 1000.diff.txt

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Look at
  General Unit Testing
  Comment and Coding Conventions
  Error Handling
  Resource Leaks
  Thread Safety
  Control Structures
  Performance
  Functionality
  Security

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Spring.after_fork { FactoryGirl.reload }

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cache: bundler
language:
  - ruby
before_install: gem install bundler -v=1.5.1
install:
  - 'bundle install'
rvm:
  - 1.9.3
  - 2.0.0
  - 2.1.0