aboutsummaryrefslogtreecommitdiffstats
path: root/railties/test/application/middleware_test.rb
blob: 0a5a52469208f6f2030fd6d8ca04f29386465f7a (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
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
# frozen_string_literal: true

require "isolation/abstract_unit"

module ApplicationTests
  class MiddlewareTest < ActiveSupport::TestCase
    include ActiveSupport::Testing::Isolation

    def setup
      build_app
      FileUtils.rm_rf "#{app_path}/config/environments"
    end

    def teardown
      teardown_app
    end

    def app
      @app ||= Rails.application
    end

    test "default middleware stack" do
      add_to_config "config.active_record.migration_error = :page_load"

      boot!

      assert_equal [
        "Rack::Sendfile",
        "ActionDispatch::Static",
        "ActionDispatch::Executor",
        "ActiveSupport::Cache::Strategy::LocalCache",
        "Rack::Runtime",
        "Rack::MethodOverride",
        "ActionDispatch::RequestId",
        "ActionDispatch::RemoteIp",
        "Rails::Rack::Logger",
        "ActionDispatch::ShowExceptions",
        "ActionDispatch::DebugExceptions",
        "ActionDispatch::Reloader",
        "ActionDispatch::Callbacks",
        "ActiveRecord::Migration::CheckPending",
        "ActionDispatch::Cookies",
        "ActionDispatch::Session::CookieStore",
        "ActionDispatch::Flash",
        "Rack::Head",
        "Rack::ConditionalGet",
        "Rack::ETag"
      ], middleware
    end

    test "api middleware stack" do
      add_to_config "config.api_only = true"

      boot!

      assert_equal [
        "Rack::Sendfile",
        "ActionDispatch::Static",
        "ActionDispatch::Executor",
        "ActiveSupport::Cache::Strategy::LocalCache",
        "Rack::Runtime",
        "ActionDispatch::RequestId",
        "ActionDispatch::RemoteIp",
        "Rails::Rack::Logger",
        "ActionDispatch::ShowExceptions",
        "ActionDispatch::DebugExceptions",
        "ActionDispatch::Reloader",
        "ActionDispatch::Callbacks",
        "Rack::Head",
        "Rack::ConditionalGet",
        "Rack::ETag"
      ], middleware
    end

    test "middleware dependencies" do
      boot!

      # The following array-of-arrays describes dependencies between
      # middlewares: the first item in each list depends on the
      # remaining items (and therefore must occur later in the
      # middleware stack).

      dependencies = [
        # Logger needs a fully "corrected" request environment
        %w(Rails::Rack::Logger Rack::MethodOverride ActionDispatch::RequestId ActionDispatch::RemoteIp),

        # Serving public/ doesn't invoke user code, so it should skip
        # locks etc
        %w(ActionDispatch::Executor ActionDispatch::Static),

        # Errors during reload must be reported
        %w(ActionDispatch::Reloader ActionDispatch::ShowExceptions ActionDispatch::DebugExceptions),

        # Outright dependencies
        %w(ActionDispatch::Static Rack::Sendfile),
        %w(ActionDispatch::Flash ActionDispatch::Session::CookieStore),
        %w(ActionDispatch::Session::CookieStore ActionDispatch::Cookies),
      ]

      require "tsort"
      sorted = TSort.tsort((middleware | dependencies.flatten).method(:each),
                           lambda { |n, &b| dependencies.each { |m, *ds| ds.each(&b) if m == n } })
      assert_equal sorted, middleware
    end

    test "Rack::Cache is not included by default" do
      boot!

      assert_not_includes middleware, "Rack::Cache", "Rack::Cache is not included in the default stack unless you set config.action_dispatch.rack_cache"
    end

    test "Rack::Cache is present when action_dispatch.rack_cache is set" do
      add_to_config "config.action_dispatch.rack_cache = true"

      boot!

      assert_includes middleware, "Rack::Cache"
    end

    test "ActiveRecord::Migration::CheckPending is present when active_record.migration_error is set to :page_load" do
      add_to_config "config.active_record.migration_error = :page_load"

      boot!

      assert_includes middleware, "ActiveRecord::Migration::CheckPending"
    end

    test "ActionDispatch::SSL is present when force_ssl is set" do
      add_to_config "config.force_ssl = true"
      boot!
      assert_includes middleware, "ActionDispatch::SSL"
    end

    test "ActionDispatch::SSL is configured with options when given" do
      add_to_config "config.force_ssl = true"
      add_to_config "config.ssl_options = { redirect: { host: 'example.com' } }"
      boot!

      assert_equal [{ redirect: { host: "example.com" } }], Rails.application.middleware.first.args
    end

    test "removing Active Record omits its middleware" do
      use_frameworks []
      boot!
      assert_not_includes middleware, "ActiveRecord::Migration::CheckPending"
    end

    test "includes executor" do
      boot!
      assert_includes middleware, "ActionDispatch::Executor"
    end

    test "does not include lock if cache_classes is set and so is eager_load" do
      add_to_config "config.cache_classes = true"
      add_to_config "config.eager_load = true"
      boot!
      assert_not_includes middleware, "Rack::Lock"
    end

    test "does not include lock if allow_concurrency is set to :unsafe" do
      add_to_config "config.allow_concurrency = :unsafe"
      boot!
      assert_not_includes middleware, "Rack::Lock"
    end

    test "includes lock if allow_concurrency is disabled" do
      add_to_config "config.allow_concurrency = false"
      boot!
      assert_includes middleware, "Rack::Lock"
    end

    test "removes static asset server if public_file_server.enabled is disabled" do
      add_to_config "config.public_file_server.enabled = false"
      boot!
      assert_not_includes middleware, "ActionDispatch::Static"
    end

    test "can delete a middleware from the stack" do
      add_to_config "config.middleware.delete ActionDispatch::Static"
      boot!
      assert_not_includes middleware, "ActionDispatch::Static"
    end

    test "can delete a middleware from the stack even if insert_before is added after delete" do
      add_to_config "config.middleware.delete Rack::Runtime"
      add_to_config "config.middleware.insert_before(Rack::Runtime, Rack::Config)"
      boot!
      assert_includes middleware, "Rack::Config"
      assert_not middleware.include?("Rack::Runtime")
    end

    test "can delete a middleware from the stack even if insert_after is added after delete" do
      add_to_config "config.middleware.delete Rack::Runtime"
      add_to_config "config.middleware.insert_after(Rack::Runtime, Rack::Config)"
      boot!
      assert_includes middleware, "Rack::Config"
      assert_not middleware.include?("Rack::Runtime")
    end

    test "includes exceptions middlewares even if action_dispatch.show_exceptions is disabled" do
      add_to_config "config.action_dispatch.show_exceptions = false"
      boot!
      assert_includes middleware, "ActionDispatch::ShowExceptions"
      assert_includes middleware, "ActionDispatch::DebugExceptions"
    end

    test "removes ActionDispatch::Reloader if cache_classes is true" do
      add_to_config "config.cache_classes = true"
      boot!
      assert_not_includes middleware, "ActionDispatch::Reloader"
    end

    test "use middleware" do
      use_frameworks []
      add_to_config "config.middleware.use Rack::Config"
      boot!
      assert_equal "Rack::Config", middleware.last
    end

    test "insert middleware after" do
      add_to_config "config.middleware.insert_after Rack::Sendfile, Rack::Config"
      boot!
      assert_equal "Rack::Config", middleware.second
    end

    test "unshift middleware" do
      add_to_config "config.middleware.unshift Rack::Config"
      boot!
      assert_equal "Rack::Config", middleware.first
    end

    test "Rails.cache does not respond to middleware" do
      add_to_config "config.cache_store = :memory_store"
      boot!
      assert_equal "Rack::Runtime", middleware.fourth
    end

    test "Rails.cache does respond to middleware" do
      boot!
      assert_equal "Rack::Runtime", middleware.fifth
    end

    test "insert middleware before" do
      add_to_config "config.middleware.insert_before Rack::Sendfile, Rack::Config"
      boot!
      assert_equal "Rack::Config", middleware.first
    end

    test "can't change middleware after it's built" do
      boot!
      assert_raise RuntimeError do
        app.config.middleware.use Rack::Config
      end
    end

    # ConditionalGet + Etag
    test "conditional get + etag middlewares handle http caching based on body" do
      make_basic_app

      class ::OmgController < ActionController::Base
        def index
          if params[:nothing]
            render plain: ""
          else
            render plain: "OMG"
          end
        end
      end

      etag = "W/" + "c00862d1c6c1cf7c1b49388306e7b3c1".inspect

      get "/"
      assert_equal 200, last_response.status
      assert_equal "OMG", last_response.body
      assert_equal "text/plain; charset=utf-8", last_response.headers["Content-Type"]
      assert_equal "max-age=0, private, must-revalidate", last_response.headers["Cache-Control"]
      assert_equal etag, last_response.headers["Etag"]

      get "/", {}, { "HTTP_IF_NONE_MATCH" => etag }
      assert_equal 304, last_response.status
      assert_equal "", last_response.body
      assert_nil last_response.headers["Content-Type"]
      assert_equal "max-age=0, private, must-revalidate", last_response.headers["Cache-Control"]
      assert_equal etag, last_response.headers["Etag"]

      get "/?nothing=true"
      assert_equal 200, last_response.status
      assert_equal "", last_response.body
      assert_equal "text/plain; charset=utf-8", last_response.headers["Content-Type"]
      assert_equal "no-cache", last_response.headers["Cache-Control"]
      assert_nil last_response.headers["Etag"]
    end

    test "ORIGINAL_FULLPATH is passed to env" do
      boot!
      env = ::Rack::MockRequest.env_for("/foo/?something")
      Rails.application.call(env)

      assert_equal "/foo/?something", env["ORIGINAL_FULLPATH"]
    end

    private

      def boot!
        require "#{app_path}/config/environment"
      end

      def middleware
        Rails.application.middleware.map(&:klass).map(&:name)
      end
  end
end