Install testing libraries

* RSpec
* Combustion for dummy app generation
* Capybara/Poltergeist for end to end testing

Author: tf

.gitignore

@@ -1,4 +1,8 @@
+.bundle
 .ruby-version
 .ruby-gemset
 Gemfile.lock
 /pkg/*
+/spec/internal/tmp
+/spec/internal/db/*.sqlite
+/spec/examples.txt

.rspec

@@ -0,0 +1 @@
+--require spec_helper

activeadmin-select2.gemspec

@@ -19,9 +19,15 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency "bundler", "~> 1.5"
   spec.add_development_dependency "rake"
+  spec.add_development_dependency 'rspec-rails', '~> 3.6'
+  spec.add_development_dependency 'combustion', '~> 0.7.0'
+  spec.add_development_dependency 'database_cleaner', '~> 1.6'
+  spec.add_development_dependency 'sqlite3', '~> 1.3'
+  spec.add_development_dependency 'capybara', '~> 2.15'
+  spec.add_development_dependency 'poltergeist', '~> 1.15'
+  spec.add_development_dependency 'rails'
 
   spec.add_runtime_dependency 'activeadmin'
   spec.add_runtime_dependency 'jquery-rails'
   spec.add_runtime_dependency 'select2-rails'
-
 end

spec/internal/app/assets/javascripts/active_admin.js

@@ -0,0 +1,2 @@
+//= require active_admin/base
+//= require active_admin/select2

spec/internal/app/assets/stylesheets/active_admin.scss

@@ -0,0 +1,2 @@
+@import "active_admin/mixins";
+@import "active_admin/base";

spec/internal/app/controllers/application_controller.rb

@@ -0,0 +1,5 @@
+class ApplicationController < ActionController::Base
+  cattr_accessor :current_user
+
+  helper_method :current_user
+end

spec/internal/config/database.yml

@@ -0,0 +1,3 @@
+test:
+  adapter:  sqlite3
+  database: db/combustion_test.sqlite

spec/internal/config/initializers/assets.rb

@@ -0,0 +1 @@
+Rails.application.config.assets.precompile += %w(active_admin.js active_admin.css active_admin/print.css)

spec/internal/config/routes.rb

@@ -0,0 +1,3 @@
+Rails.application.routes.draw do
+  ActiveAdmin.routes(self)
+end

spec/internal/db/schema.rb

@@ -0,0 +1,10 @@
+ActiveRecord::Schema.define do
+  create_table(:active_admin_comments, force: true) do |t|
+    t.string :namespace
+    t.text   :body
+    t.string :resource_id,   null: false
+    t.string :resource_type, null: false
+    t.references :author, polymorphic: true
+    t.timestamps null: false
+  end
+end

spec/internal/log/.gitignore

@@ -0,0 +1 @@
+*.log

spec/internal/public/favicon.ico

@@ -0,0 +1,12 @@
+ENV['RAILS_ENV'] ||= 'test'
+
+require 'combustion'
+Combustion.initialize!(:active_record, :action_controller, :action_view, :sprockets)
+
+require 'rspec/rails'
+
+RSpec.configure do |config|
+  config.infer_spec_type_from_file_location!
+
+  config.filter_rails_from_backtrace!
+end

spec/rails_helper.rb

@@ -0,0 +1,96 @@
+# This file was generated by the `rspec --init` command. Conventionally, all
+# specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.
+# The generated `.rspec` file contains `--require spec_helper` which will cause
+# this file to always be loaded, without a need to explicitly require it in any
+# files.
+#
+# Given that it is always loaded, you are encouraged to keep this file as
+# light-weight as possible. Requiring heavyweight dependencies from this file
+# will add to the boot time of your test suite on EVERY test run, even for an
+# individual file that may not need all of that loaded. Instead, consider making
+# a separate helper file that requires the additional dependencies and performs
+# the additional setup, and require it from the spec files that actually need
+# it.
+#
+# See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
+RSpec.configure do |config|
+  # rspec-expectations config goes here. You can use an alternate
+  # assertion/expectation library such as wrong or the stdlib/minitest
+  # assertions if you prefer.
+  config.expect_with :rspec do |expectations|
+    # This option will default to `true` in RSpec 4. It makes the `description`
+    # and `failure_message` of custom matchers include text for helper methods
+    # defined using `chain`, e.g.:
+    #     be_bigger_than(2).and_smaller_than(4).description
+    #     # => "be bigger than 2 and smaller than 4"
+    # ...rather than:
+    #     # => "be bigger than 2"
+    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
+  end
+
+  # rspec-mocks config goes here. You can use an alternate test double
+  # library (such as bogus or mocha) by changing the `mock_with` option here.
+  config.mock_with :rspec do |mocks|
+    # Prevents you from mocking or stubbing a method that does not exist on
+    # a real object. This is generally recommended, and will default to
+    # `true` in RSpec 4.
+    mocks.verify_partial_doubles = true
+  end
+
+  # This option will default to `:apply_to_host_groups` in RSpec 4 (and will
+  # have no way to turn it off -- the option exists only for backwards
+  # compatibility in RSpec 3). It causes shared context metadata to be
+  # inherited by the metadata hash of host groups and examples, rather than
+  # triggering implicit auto-inclusion in groups with matching metadata.
+  config.shared_context_metadata_behavior = :apply_to_host_groups
+
+  # This allows you to limit a spec run to individual examples or groups
+  # you care about by tagging them with `:focus` metadata. When nothing
+  # is tagged with `:focus`, all examples get run. RSpec also provides
+  # aliases for `it`, `describe`, and `context` that include `:focus`
+  # metadata: `fit`, `fdescribe` and `fcontext`, respectively.
+  config.filter_run_when_matching :focus
+
+  # Allows RSpec to persist some state between runs in order to support
+  # the `--only-failures` and `--next-failure` CLI options. We recommend
+  # you configure your source control system to ignore this file.
+  config.example_status_persistence_file_path = 'spec/examples.txt'
+
+  # Limits the available syntax to the non-monkey patched syntax that is
+  # recommended. For more details, see:
+  #   - http://rspec.info/blog/2012/06/rspecs-new-expectation-syntax/
+  #   - http://www.teaisaweso.me/blog/2013/05/27/rspecs-new-message-expectation-syntax/
+  #   - http://rspec.info/blog/2014/05/notable-changes-in-rspec-3/#zero-monkey-patching-mode
+  config.disable_monkey_patching!
+
+  # This setting enables warnings. It's recommended, but in some cases may
+  # be too noisy due to issues in dependencies.
+  config.warnings = false
+
+  # Many RSpec users commonly either run the entire suite or an individual
+  # file, and it's useful to allow more verbose output when running an
+  # individual spec file.
+  if config.files_to_run.one?
+    # Use the documentation formatter for detailed output,
+    # unless a formatter has already been configured
+    # (e.g. via a command-line flag).
+    config.default_formatter = 'doc'
+  end
+
+  # Print the 10 slowest examples and example groups at the
+  # end of the spec run, to help surface which specs are running
+  # particularly slow.
+  config.profile_examples = 10
+
+  # Run specs in random order to surface order dependencies. If you find an
+  # order dependency and want to debug it, you can fix the order by providing
+  # the seed, which is printed after each run.
+  #     --seed 1234
+  config.order = :random
+
+  # Seed global randomization in this process using the `--seed` CLI option.
+  # Setting this allows you to use `--seed` to deterministically reproduce
+  # test failures related to randomization by passing the same `--seed` value
+  # as the one that triggered the failure.
+  Kernel.srand config.seed
+end

spec/spec_helper.rb

@@ -0,0 +1,8 @@
+require 'capybara/rspec'
+require 'capybara/poltergeist'
+
+Capybara.javascript_driver = :poltergeist
+
+RSpec.configure do |config|
+  config.include Capybara::RSpecMatchers, type: :request
+end