Code for example rails challenge

source/.byebug_history

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+continue
+assert_select ".successful-charges>tbody>tr", count: 10
+assert_select ".successful-charges>tbody>tr"
+Customer.count
+Transaction.count
+a.count
+a=[#<Nokogiri::XML::Element:0x2afe62f76c38 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f76968 "Johny Flow">]>, #<Nokogiri::XML::Element:0x2afe62f766e8 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f76490 "$750.74">]>, #<Nokogiri::XML::Element:0x2afe62f76224 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f79eb0 "2020-09-19 11:29:58 UTC">]>, #<Nokogiri::XML::Element:0x2afe62f79a78 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f797a8 "Johny Flow">]>, #<Nokogiri::XML::Element:0x2afe62f795dc name="td" children=[#<Nokogiri::XML::Text:0x2afe62f793fc "$750.74">]>, #<Nokogiri::XML::Element:0x2afe62f7917c name="td" children=[#<Nokogiri::XML::Text:0x2afe62f78bb4 "2020-09-19 11:29:58 UTC">]>, #<Nokogiri::XML::Element:0x2afe62f7868c name="td" children=[#<Nokogiri::XML::Text:0x2afe62f780c4 "Johny Flow">]>, #<Nokogiri::XML::Element:0x2afe62f7f540 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f7ee38 "$750.74">]>, #<Nokogiri::XML::Element:0x2afe62f49468 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f49008 "2020-09-19 11:29:58 UTC">]>, #<Nokogiri::XML::Element:0x2afe62f48c84 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f486e4 "Johny Flow">]>, #<Nokogiri::XML::Element:0x2afe62f484b4 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f48298 "$750.74">]>, #<Nokogiri::XML::Element:0x2afe62f480a4 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f53eb8 "2020-09-19 11:29:59 UTC">]>, #<Nokogiri::XML::Element:0x2afe62f53b98 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f53238 "Johny Flow">]>, #<Nokogiri::XML::Element:0x2afe62f5306c name="td" children=[#<Nokogiri::XML::Text:0x2afe62f52e3c "$750.74">]>, #<Nokogiri::XML::Element:0x2afe62f52be4 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f528d8 "2020-09-19 11:29:59 UTC">]>, #<Nokogiri::XML::Element:0x2afe62f526e4 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f522d4 "Raj Jamnis">]>, #<Nokogiri::XML::Element:0x2afe62f520a4 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f65d5c "$750.74">]>, #<Nokogiri::XML::Element:0x2afe62f65b68 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f65870 "2020-09-19 11:29:59 UTC">]>, #<Nokogiri::XML::Element:0x2afe62f65438 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f64ed4 "Raj Jamnis">]>, #<Nokogiri::XML::Element:0x2afe62f649c0 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f645c4 "$750.74">]>, #<Nokogiri::XML::Element:0x2afe62f64204 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f67d3c "2020-09-19 11:29:59 UTC">]>, #<Nokogiri::XML::Element:0x2afe62f678f0 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f6765c "Raj Jamnis">]>, #<Nokogiri::XML::Element:0x2afe62f67418 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f67184 "$750.74">]>, #<Nokogiri::XML::Element:0x2afe62f66fb8 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f66dc4 "2020-09-19 11:29:59 UTC">]>, #<Nokogiri::XML::Element:0x2afe62f66ba8 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f668d8 "Andrew Chung">]>, #<Nokogiri::XML::Element:0x2afe62f664a0 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f66090 "$750.74">]>, #<Nokogiri::XML::Element:0x2afe62f6fba4 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f6f794 "2020-09-19 11:29:59 UTC">]>, #<Nokogiri::XML::Element:0x2afe62f6f26c name="td" children=[#<Nokogiri::XML::Text:0x2afe62f8be30 "Mike Smith">]>, #<Nokogiri::XML::Element:0x2afe62f8b994 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f8b570 "$750.74">]>, #<Nokogiri::XML::Element:0x2afe62f8b138 name="td" children=[#<Nokogiri::XML::Text:0x2afe62f8a60c "2020-09-19 11:29:59 UTC">]>]
+assert_select ".successful-charges>tbody>tr>td"
+continue
+Transaction.count
+Customer.count
+assert_select ".successful-charges>tbody>tr>td"
+assert_select ".failed-charges>tbody>tr>td", count: 5
+assert_select ".disputed-charges>tbody>tr>td", count: 2
+assert_select ".disputed-charges>tbody>tr>td"
+assert_select ".failed-charges>tbody>tr>td"
+assert_select "failed-charges>tbody>tr>td"
+assert_select ".successful-charges>tbody>tr>td"
+continue
+assert_select ".failed-charges>tbody>tr>td"
+assert_select ".failed-charges>tbody>tr"
+assert_select ".failed-charges>tbody"
+assert_select ".failed-charges"
+assert_select ".failed-charges>tr"
+assert_select ".failed-charges>tr>td"
+assert_select ".failed-charges"
+assert_select "tr>td"

source/.gitignore

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+# See https://help.github.com/articles/ignoring-files for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile '~/.gitignore_global'
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore the default SQLite database.
+/db/*.sqlite3
+/db/*.sqlite3-journal
+
+# Ignore all logfiles and tempfiles.
+/log/*
+!/log/.keep
+/tmp

source/.ruby-version

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+2.6.6

source/Gemfile

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+source 'https://rubygems.org'
+
+
+# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
+gem 'rails', '4.2.11.3'
+# Use sqlite3 as the database for Active Record
+gem 'sqlite3', '~> 1.3.13'
+# Use SCSS for stylesheets
+gem 'sass-rails', '~> 5.0'
+# Use Uglifier as compressor for JavaScript assets
+gem 'uglifier', '>= 1.3.0'
+# Use CoffeeScript for .coffee assets and views
+gem 'coffee-rails', '~> 4.1.0'
+# See https://github.com/rails/execjs#readme for more supported runtimes
+# gem 'therubyracer', platforms: :ruby
+
+# Use jquery as the JavaScript library
+gem 'jquery-rails'
+# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
+gem 'turbolinks'
+# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
+gem 'jbuilder', '~> 2.0'
+# bundle exec rake doc:rails generates the API under doc/api.
+gem 'sdoc', '~> 0.4.0', group: :doc
+
+# Use ActiveModel has_secure_password
+# gem 'bcrypt', '~> 3.1.7'
+
+# Use Unicorn as the app server
+# gem 'unicorn'
+
+# Use Capistrano for deployment
+# gem 'capistrano-rails', group: :development
+
+group :development, :test do
+  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
+  gem 'byebug'
+  gem 'rspec-rails'
+  gem 'factory_bot_rails'
+end
+
+group :development do
+  # Access an IRB console on exception pages or by using <%= console %> in views
+  gem 'web-console', '~> 2.0'
+
+  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
+  gem 'spring'
+end
+
+group :test do
+  gem 'database_cleaner'
+end

source/Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    actionmailer (4.2.11.3)
+      actionpack (= 4.2.11.3)
+      actionview (= 4.2.11.3)
+      activejob (= 4.2.11.3)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+    actionpack (4.2.11.3)
+      actionview (= 4.2.11.3)
+      activesupport (= 4.2.11.3)
+      rack (~> 1.6)
+      rack-test (~> 0.6.2)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (4.2.11.3)
+      activesupport (= 4.2.11.3)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activejob (4.2.11.3)
+      activesupport (= 4.2.11.3)
+      globalid (>= 0.3.0)
+    activemodel (4.2.11.3)
+      activesupport (= 4.2.11.3)
+      builder (~> 3.1)
+    activerecord (4.2.11.3)
+      activemodel (= 4.2.11.3)
+      activesupport (= 4.2.11.3)
+      arel (~> 6.0)
+    activesupport (4.2.11.3)
+      i18n (~> 0.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    arel (6.0.4)
+    binding_of_caller (0.8.0)
+      debug_inspector (>= 0.0.1)
+    builder (3.2.4)
+    byebug (11.1.3)
+    coffee-rails (4.1.1)
+      coffee-script (>= 2.2.0)
+      railties (>= 4.0.0, < 5.1.x)
+    coffee-script (2.4.1)
+      coffee-script-source
+      execjs
+    coffee-script-source (1.12.2)
+    concurrent-ruby (1.1.7)
+    crass (1.0.6)
+    database_cleaner (1.8.5)
+    debug_inspector (0.0.3)
+    diff-lcs (1.4.4)
+    erubis (2.7.0)
+    execjs (2.7.0)
+    factory_bot (5.2.0)
+      activesupport (>= 4.2.0)
+    factory_bot_rails (5.2.0)
+      factory_bot (~> 5.2.0)
+      railties (>= 4.2.0)
+    ffi (1.13.1)
+    globalid (0.4.2)
+      activesupport (>= 4.2.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    jbuilder (2.9.1)
+      activesupport (>= 4.2.0)
+    jquery-rails (4.4.0)
+      rails-dom-testing (>= 1, < 3)
+      railties (>= 4.2.0)
+      thor (>= 0.14, < 2.0)
+    json (1.8.6)
+    loofah (2.7.0)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.5.9)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
+    mini_mime (1.0.2)
+    mini_portile2 (2.4.0)
+    minitest (5.14.2)
+    nokogiri (1.10.10)
+      mini_portile2 (~> 2.4.0)
+    rack (1.6.13)
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    rails (4.2.11.3)
+      actionmailer (= 4.2.11.3)
+      actionpack (= 4.2.11.3)
+      actionview (= 4.2.11.3)
+      activejob (= 4.2.11.3)
+      activemodel (= 4.2.11.3)
+      activerecord (= 4.2.11.3)
+      activesupport (= 4.2.11.3)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 4.2.11.3)
+      sprockets-rails
+    rails-deprecated_sanitizer (1.0.3)
+      activesupport (>= 4.2.0.alpha)
+    rails-dom-testing (1.0.9)
+      activesupport (>= 4.2.0, < 5.0)
+      nokogiri (~> 1.6)
+      rails-deprecated_sanitizer (>= 1.0.1)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
+    railties (4.2.11.3)
+      actionpack (= 4.2.11.3)
+      activesupport (= 4.2.11.3)
+      rake (>= 0.8.7)
+      thor (>= 0.18.1, < 2.0)
+    rake (13.0.1)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    rdoc (4.3.0)
+    rspec-core (3.9.2)
+      rspec-support (~> 3.9.3)
+    rspec-expectations (3.9.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.9.0)
+    rspec-mocks (3.9.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.9.0)
+    rspec-rails (4.0.1)
+      actionpack (>= 4.2)
+      activesupport (>= 4.2)
+      railties (>= 4.2)
+      rspec-core (~> 3.9)
+      rspec-expectations (~> 3.9)
+      rspec-mocks (~> 3.9)
+      rspec-support (~> 3.9)
+    rspec-support (3.9.3)
+    sass (3.7.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+    sass-rails (5.0.7)
+      railties (>= 4.0.0, < 6)
+      sass (~> 3.1)
+      sprockets (>= 2.8, < 4.0)
+      sprockets-rails (>= 2.0, < 4.0)
+      tilt (>= 1.1, < 3)
+    sdoc (0.4.2)
+      json (~> 1.7, >= 1.7.7)
+      rdoc (~> 4.0)
+    spring (2.1.1)
+    sprockets (3.7.2)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.2.2)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    sqlite3 (1.3.13)
+    thor (1.0.1)
+    thread_safe (0.3.6)
+    tilt (2.0.10)
+    turbolinks (5.2.1)
+      turbolinks-source (~> 5.2)
+    turbolinks-source (5.2.0)
+    tzinfo (1.2.7)
+      thread_safe (~> 0.1)
+    uglifier (4.2.0)
+      execjs (>= 0.3.0, < 3)
+    web-console (2.3.0)
+      activemodel (>= 4.0)
+      binding_of_caller (>= 0.7.2)
+      railties (>= 4.0)
+      sprockets-rails (>= 2.0, < 4.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  byebug
+  coffee-rails (~> 4.1.0)
+  database_cleaner
+  factory_bot_rails
+  jbuilder (~> 2.0)
+  jquery-rails
+  rails (= 4.2.11.3)
+  rspec-rails
+  sass-rails (~> 5.0)
+  sdoc (~> 0.4.0)
+  spring
+  sqlite3 (~> 1.3.13)
+  turbolinks
+  uglifier (>= 1.3.0)
+  web-console (~> 2.0)
+
+BUNDLED WITH
+   1.17.3

source/README.md

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+# Development Setup
+
+Install and switch to ruby version `2.6.6`
+
+Run following commands on terminal
+* `cd source && bundle install`
+* `bundle exec rake db:create db:migrate db:seed`
+* `bundle exec rails s`
+
+App can be browsed on http://localhost:3000
+* Charges -> http://localhost:3000/charges
+* Customers -> http://localhost:3000/customers
+* Transactions -> http://localhost:3000/transactions
+
+The tests specified in rails challenge can be run with
+* `bundle exec rspec spec/views/charges/index.html.erb_spec.rb`

source/Rakefile

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+# Add your own tasks in files placed in lib/tasks ending in .rake,
+# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
+
+require File.expand_path('../config/application', __FILE__)
+
+Rails.application.load_tasks

source/app/assets/javascripts/application.js

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+// This is a manifest file that'll be compiled into application.js, which will include all the files
+// listed below.
+//
+// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
+// or any plugin's vendor/assets/javascripts directory can be referenced here using a relative path.
+//
+// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
+// compiled file.
+//
+// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
+// about supported directives.
+//
+//= require jquery
+//= require jquery_ujs
+//= require turbolinks
+//= require_tree .

source/app/assets/javascripts/customers.coffee

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+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

source/app/assets/javascripts/transactions.coffee

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+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

source/app/assets/stylesheets/application.css

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+/*
+ * This is a manifest file that'll be compiled into application.css, which will include all the files
+ * listed below.
+ *
+ * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
+ * or any plugin's vendor/assets/stylesheets directory can be referenced here using a relative path.
+ *
+ * You're free to add application-wide styles to this file and they'll appear at the bottom of the
+ * compiled file so the styles you add here take precedence over styles defined in any styles
+ * defined in the other CSS/SCSS files in this directory. It is generally better to create a new
+ * file per style scope.
+ *
+ *= require_tree .
+ *= require_self
+ */

source/app/assets/stylesheets/customers.scss

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+// Place all the styles related to the customers controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/