kieraneglin

// Problem: how do you access a deeply nested object that you're not certain exists?
// if(object.user && object.user.post && object.user.post[0] && object.user.post[0].comment) {
//    return object.user.post[0].comment
// }
// and that's horrifying.  Here's something better

const idx = (props, object) => props.reduce((prefix, val) => (prefix && prefix[val]) ? prefix[val] : null, object)

// Usage:
nestedObj = {...}

kieraneglin

new RegExp(/\(([\d^)]+)\)(?!\S)/igm)

kieraneglin

pkill -USR1 puma-dev

kieraneglin

module HelperProxy
  HELPER_DIRECTORY = Dir[Rails.root.join('app', 'helpers', '**', '*.rb')]

  HELPER_DIRECTORY.each do |file|
    include file.split(/\/helpers\/(.*?)\.rb/)[1].classify.safe_constantize
  end
end

kieraneglin

  def assert_differences(expression_array, by:, message: nil, &block)
    expressions = Array(expression_array)
    change_by = Array(by).map(&:to_i)

    if expressions.size != change_by.size
      raise ArgumentError, 'Each expression must have a corresponding value to change by'
    end

    exps = expressions.map.with_index do |e, i|
      callable = e.respond_to?(:call) ? e : lambda { eval(e, block.binding) }

kieraneglin

Author

Original author is rcknr. I manually transpiled to use JS classes

Usage

See here

Otherwise, put this gist into a file called map-label.js and include with import MapLabel from './map-label'. From there, follow the instructions outlined above.

kieraneglin

assert_difference('User.count', -1) do
  assert_difference('GoodbyeMailerJob.size', +1) do
    assert_difference('Post.count', -5) do
      # Logic...
    end
  end
end

kieraneglin

assert_differences(['User.count', 'Post.count'], by: [-1, -5]) do
  # Logic...
end

assert_differences('User.count', by: -1) do
  # Logic... (although you should be using assert_difference in this case)
end

assert_differences(-> { User.count }, by: -1) do
  # I can do lambdas too!

kieraneglin

# Drop into test_helper.rb or similar
def assert_differences(expression_array, by:, message: nil, &block)
  expressions = Array(expression_array)
  change_by = Array(by).map(&:to_i)

  if expressions.size != change_by.size
    raise ArgumentError, 'Each expression must have a corresponding value to change by'
  end

  exps = expressions.map.with_index do |e, i|

kieraneglin

class Post { // The name of this class doesn't matter, nor does the filepath
  constructor() {
    // Code related to this class' setup.  Not required for Punchbox to run
  }
  controller() {
    // Code within here will run on every action of the controller
  }
  index() {
    // This code will run on the Posts#index action specifically
  }