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class App extends React.Component {
  render() {
    return (
      <div>
        <button onClick={this.props.async_update}>Click To Update State After Five Seconds</button>
      </div>
    );
  }
}

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# config/environments/test.rb

config.after_initialize do
  Bullet.enable = true
  Bullet.bullet_logger = true
  Bullet.raise = true # raise an error if n+1 query occurs
end

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###### Upon successful authentication, generate auth_token and send back to user
jti = Digest::MD5.hexidigest(user.id, rand.to_s, "SUPER_SECRET_KEY")
payload = {
  iat: current_time,
  sub: current_user.id,
  jti: jti,
}
auth_token = JWT.encoded(payload, "SUPER_SECRET_KEY", "HS256")
$redis.sadd("UserValidAuthTokenJTI:#{current_user.id}", jti)
render { auth_token: token }

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require "pry"

class Ship
  def self.find_by_id(id)
    SHIPS.select {|ship| ship.id == id }.first
  end

  attr_reader :id, :length
  def initialize(id:, length:)
    @length = length

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NUMERAL_MAP = {
  'M'  => 1000,
  'CM' => 900,
  'D'  => 500,
  'CD' => 400,
  'C'  => 100,
  'XC' => 90,
  'L'  => 50,
  'XL' => 40,
  'X'  => 10,

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def alternate(color)
  if color == :red
    return :blue
  else
    return :red
  end
end

class SameNeighborColorError < StandardError; end

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# Suppose the AccountHolder parent class is used
# to simply have an association with an account so
# both corporations and people can have accounts.

class Account < ActiveRecord::Base
  belongs_to :account_holder
end

class AccountHolder < ActiveRecord::Base
  has_one :account

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class Animal < ActiveRecord::Base
  def eat
  end
end

class Bird < Animal
  set_table_name "birds"
  
  def fly
  end

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class Animal < ActiveRecord::Base
  def eat
  end
end

class Bird < Animal
  def fly
  end
end

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# Under STI, find the top 10 accounts with the greatest balances
# with just one query.

top_accounts = Account.order(balance: :desc).limit(10)

# Under MTI, we need to query all accounts and sort them in memory:

top_corporate_accts =  CorporateAccount.order(balance: :desc).limit(10)
top_sb_accts =  SmallBusinessAccount.order(balance: :desc).limit(10)
top_personal_accts =  PersonalAccount.order(balance: :desc).limit(10)