aboutsummaryrefslogtreecommitdiffstats
path: root/railties/test/isolation/abstract_unit.rb
blob: 7ae1b5ccfdf528533e3bb74bf4123d1c05b571c6 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
# Note:
# It is important to keep this file as light as possible
# the goal for tests that require this is to test booting up
# rails from an empty state, so anything added here could
# hide potential failures
#
# It is also good to know what is the bare minimum to get
# Rails booted up.
require 'fileutils'

require 'bundler/setup' unless defined?(Bundler)
require 'active_support/testing/autorun'
require 'active_support/test_case'

RAILS_FRAMEWORK_ROOT = File.expand_path("#{File.dirname(__FILE__)}/../../..")

# These files do not require any others and are needed
# to run the tests
require "active_support/testing/isolation"
require "active_support/core_ext/kernel/reporting"
require 'tmpdir'

module TestHelpers
  module Paths
    def app_template_path
      File.join Dir.tmpdir, 'app_template'
    end

    def tmp_path(*args)
      @tmp_path ||= File.realpath(Dir.mktmpdir)
      File.join(@tmp_path, *args)
    end

    def app_path(*args)
      tmp_path(*%w[app] + args)
    end

    def framework_path
      RAILS_FRAMEWORK_ROOT
    end

    def rails_root
      app_path
    end
  end

  module Rack
    def app(env = "production")
      old_env = ENV["RAILS_ENV"]
      @app ||= begin
        ENV["RAILS_ENV"] = env
        require "#{app_path}/config/environment"
        Rails.application
      end
    ensure
      ENV["RAILS_ENV"] = old_env
    end

    def extract_body(response)
      "".tap do |body|
        response[2].each {|chunk| body << chunk }
      end
    end

    def get(path)
      @app.call(::Rack::MockRequest.env_for(path))
    end

    def assert_welcome(resp)
      assert_equal 200, resp[0]
      assert resp[1]["Content-Type"] = "text/html"
      assert extract_body(resp).match(/Welcome aboard/)
    end

    def assert_success(resp)
      assert_equal 202, resp[0]
    end

    def assert_missing(resp)
      assert_equal 404, resp[0]
    end

    def assert_header(key, value, resp)
      assert_equal value, resp[1][key.to_s]
    end

    def assert_body(expected, resp)
      assert_equal expected, extract_body(resp)
    end
  end

  module Generation
    # Build an application by invoking the generator and going through the whole stack.
    def build_app(options = {})
      @prev_rails_env = ENV['RAILS_ENV']
      ENV['RAILS_ENV'] = 'development'

      FileUtils.rm_rf(app_path)
      FileUtils.cp_r(app_template_path, app_path)

      # Delete the initializers unless requested
      unless options[:initializers]
        Dir["#{app_path}/config/initializers/*.rb"].each do |initializer|
          File.delete(initializer)
        end
      end

      gemfile_path = "#{app_path}/Gemfile"
      if options[:gemfile].blank? && File.exist?(gemfile_path)
        File.delete gemfile_path
      end

      routes = File.read("#{app_path}/config/routes.rb")
      if routes =~ /(\n\s*end\s*)\Z/
        File.open("#{app_path}/config/routes.rb", 'w') do |f|
          f.puts $` + "\nmatch ':controller(/:action(/:id))(.:format)', via: :all\n" + $1
        end
      end

      add_to_config <<-RUBY
        config.eager_load = false
        config.secret_key_base = "3b7cd727ee24e8444053437c36cc66c4"
        config.session_store :cookie_store, key: "_myapp_session"
        config.active_support.deprecation = :log
        config.action_controller.allow_forgery_protection = false
      RUBY
    end

    def teardown_app
      ENV['RAILS_ENV'] = @prev_rails_env if @prev_rails_env
    end

    # Make a very basic app, without creating the whole directory structure.
    # This is faster and simpler than the method above.
    def make_basic_app
      require "rails"
      require "action_controller/railtie"

      app = Class.new(Rails::Application)
      app.config.eager_load = false
      app.config.secret_key_base = "3b7cd727ee24e8444053437c36cc66c4"
      app.config.session_store :cookie_store, key: "_myapp_session"
      app.config.active_support.deprecation = :log

      yield app if block_given?
      app.initialize!

      app.routes.draw do
        get "/" => "omg#index"
      end

      require 'rack/test'
      extend ::Rack::Test::Methods
    end

    def simple_controller
      controller :foo, <<-RUBY
        class FooController < ApplicationController
          def index
            render text: "foo"
          end
        end
      RUBY

      app_file 'config/routes.rb', <<-RUBY
        AppTemplate::Application.routes.draw do
          get ':controller(/:action)'
        end
      RUBY
    end

    class Bukkit
      attr_reader :path

      def initialize(path)
        @path = path
      end

      def write(file, string)
        path = "#{@path}/#{file}"
        FileUtils.mkdir_p(File.dirname(path))
        File.open(path, "w") {|f| f.puts string }
      end

      def delete(file)
        File.delete("#{@path}/#{file}")
      end
    end

    def engine(name)
      dir = "#{app_path}/random/#{name}"
      FileUtils.mkdir_p(dir)

      app = File.readlines("#{app_path}/config/application.rb")
      app.insert(2, "$:.unshift(\"#{dir}/lib\")")
      app.insert(3, "require #{name.inspect}")

      File.open("#{app_path}/config/application.rb", 'r+') do |f|
        f.puts app
      end

      Bukkit.new(dir).tap do |bukkit|
        yield bukkit if block_given?
      end
    end

    def script(script)
      Dir.chdir(app_path) do
        `#{Gem.ruby} #{app_path}/bin/rails #{script}`
      end
    end

    def add_to_config(str)
      environment = File.read("#{app_path}/config/application.rb")
      if environment =~ /(\n\s*end\s*end\s*)\Z/
        File.open("#{app_path}/config/application.rb", 'w') do |f|
          f.puts $` + "\n#{str}\n" + $1
        end
      end
    end

    def add_to_env_config(env, str)
      environment = File.read("#{app_path}/config/environments/#{env}.rb")
      if environment =~ /(\n\s*end\s*)\Z/
        File.open("#{app_path}/config/environments/#{env}.rb", 'w') do |f|
          f.puts $` + "\n#{str}\n" + $1
        end
      end
    end

    def remove_from_config(str)
      file = "#{app_path}/config/application.rb"
      contents = File.read(file)
      contents.sub!(/#{str}/, "")
      File.open(file, "w+") { |f| f.puts contents }
    end

    def app_file(path, contents)
      FileUtils.mkdir_p File.dirname("#{app_path}/#{path}")
      File.open("#{app_path}/#{path}", 'w') do |f|
        f.puts contents
      end
    end

    def remove_file(path)
      FileUtils.rm_rf "#{app_path}/#{path}"
    end

    def controller(name, contents)
      app_file("app/controllers/#{name}_controller.rb", contents)
    end

    def use_frameworks(arr)
      to_remove =  [:actionmailer,
                    :activerecord] - arr
      $:.reject! {|path| path =~ %r'/(#{to_remove.join('|')})/' }
    end

    def boot_rails
      require File.expand_path('../../../../load_paths', __FILE__)
    end
  end
end

class ActiveSupport::TestCase
  include TestHelpers::Paths
  include TestHelpers::Rack
  include TestHelpers::Generation
end

# Create a scope and build a fixture rails app
Module.new do
  extend TestHelpers::Paths

  # Build a rails app
  FileUtils.rm_rf(app_template_path)
  FileUtils.mkdir(app_template_path)

  environment = File.expand_path('../../../../load_paths', __FILE__)
  require_environment = "-r #{environment}"

  `#{Gem.ruby} #{require_environment} #{RAILS_FRAMEWORK_ROOT}/railties/bin/rails new #{app_template_path} --skip-gemfile`
  File.open("#{app_template_path}/config/boot.rb", 'w') do |f|
    f.puts "require '#{environment}'"
    f.puts "require 'rails/all'"
  end
end unless defined?(RAILS_ISOLATED_ENGINE)