aboutsummaryrefslogtreecommitdiffstats
path: root/railties/test/application/rake/multi_dbs_test.rb
blob: 31ea2246a9e3dbea375f36e5a1223b31bfc309e1 (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
# frozen_string_literal: true

require "isolation/abstract_unit"

module ApplicationTests
  module RakeTests
    class RakeMultiDbsTest < ActiveSupport::TestCase
      include ActiveSupport::Testing::Isolation

      def setup
        build_app(multi_db: true)
        FileUtils.rm_rf("#{app_path}/config/environments")
      end

      def teardown
        teardown_app
      end

      def db_create_and_drop(namespace, expected_database)
        Dir.chdir(app_path) do
          output = rails("db:create")
          assert_match(/Created database/, output)
          assert_match_namespace(namespace, output)
          assert_no_match(/already exists/, output)
          assert File.exist?(expected_database)

          output = rails("db:drop")
          assert_match(/Dropped database/, output)
          assert_match_namespace(namespace, output)
          assert_no_match(/does not exist/, output)
          assert_not File.exist?(expected_database)
        end
      end

      def db_create_and_drop_namespace(namespace, expected_database)
        Dir.chdir(app_path) do
          output = rails("db:create:#{namespace}")
          assert_match(/Created database/, output)
          assert_match_namespace(namespace, output)
          assert File.exist?(expected_database)

          output = rails("db:drop:#{namespace}")
          assert_match(/Dropped database/, output)
          assert_match_namespace(namespace, output)
          assert_not File.exist?(expected_database)
        end
      end

      def assert_match_namespace(namespace, output)
        if namespace == "primary"
          assert_match(/#{Rails.env}.sqlite3/, output)
        else
          assert_match(/#{Rails.env}_#{namespace}.sqlite3/, output)
        end
      end

      def db_migrate_and_migrate_status
        Dir.chdir(app_path) do
          generate_models_for_animals
          rails "db:migrate"
          output = rails "db:migrate:status"
          assert_match(/up     \d+  Create books/, output)
          assert_match(/up     \d+  Create dogs/, output)
        end
      end

      def db_migrate_and_schema_cache_dump
        Dir.chdir(app_path) do
          generate_models_for_animals
          rails "db:migrate"
          rails "db:schema:cache:dump"
          assert File.exist?("db/schema_cache.yml")
          assert File.exist?("db/animals_schema_cache.yml")
        end
      end

      def db_migrate_and_schema_cache_dump_and_schema_cache_clear
        Dir.chdir(app_path) do
          generate_models_for_animals
          rails "db:migrate"
          rails "db:schema:cache:dump"
          rails "db:schema:cache:clear"
          assert_not File.exist?("db/schema_cache.yml")
          assert_not File.exist?("db/animals_schema_cache.yml")
        end
      end

      def db_migrate_and_schema_dump_and_load(format)
        Dir.chdir(app_path) do
          generate_models_for_animals
          rails "db:migrate", "db:#{format}:dump"

          if format == "schema"
            schema_dump = File.read("db/#{format}.rb")
            schema_dump_animals = File.read("db/animals_#{format}.rb")
            assert_match(/create_table \"books\"/, schema_dump)
            assert_match(/create_table \"dogs\"/, schema_dump_animals)
          else
            schema_dump = File.read("db/#{format}.sql")
            schema_dump_animals = File.read("db/animals_#{format}.sql")
            assert_match(/CREATE TABLE (?:IF NOT EXISTS )?\"books\"/, schema_dump)
            assert_match(/CREATE TABLE (?:IF NOT EXISTS )?\"dogs\"/, schema_dump_animals)
          end

          rails "db:#{format}:load"

          ar_tables = lambda { rails("runner", "p ActiveRecord::Base.connection.tables").strip }
          animals_tables = lambda { rails("runner", "p AnimalsBase.connection.tables").strip }

          assert_equal '["schema_migrations", "ar_internal_metadata", "books"]', ar_tables[]
          assert_equal '["schema_migrations", "ar_internal_metadata", "dogs"]', animals_tables[]
        end
      end

      def db_migrate_namespaced(namespace)
        Dir.chdir(app_path) do
          generate_models_for_animals
          output = rails("db:migrate:#{namespace}")
          if namespace == "primary"
            assert_match(/CreateBooks: migrated/, output)
          else
            assert_match(/CreateDogs: migrated/, output)
          end
        end
      end

      def db_migrate_status_namespaced(namespace)
        Dir.chdir(app_path) do
          generate_models_for_animals
          output = rails("db:migrate:status:#{namespace}")
          if namespace == "primary"
            assert_match(/up     \d+  Create books/, output)
          else
            assert_match(/up     \d+  Create dogs/, output)
          end
        end
      end

      def db_up_and_down(version, namespace = nil)
        Dir.chdir(app_path) do
          generate_models_for_animals
          rails("db:migrate")

          if namespace
            down_output = rails("db:migrate:down:#{namespace}", "VERSION=#{version}")
            up_output = rails("db:migrate:up:#{namespace}", "VERSION=#{version}")
          else
            assert_raises RuntimeError, /You're using a multiple database application/ do
              down_output = rails("db:migrate:down", "VERSION=#{version}")
            end

            assert_raises RuntimeError, /You're using a multiple database application/ do
              up_output = rails("db:migrate:up", "VERSION=#{version}")
            end
          end

          case namespace
          when "primary"
            assert_match(/OneMigration: reverting/, down_output)
            assert_match(/OneMigration: migrated/, up_output)
          when nil
          else
            assert_match(/TwoMigration: reverting/, down_output)
            assert_match(/TwoMigration: migrated/, up_output)
          end
        end
      end

      def db_prepare
        Dir.chdir(app_path) do
          generate_models_for_animals
          output = rails("db:prepare")

          ActiveRecord::Base.configurations.configs_for(env_name: Rails.env).each do |db_config|
            if db_config.spec_name == "primary"
              assert_match(/CreateBooks: migrated/, output)
            else
              assert_match(/CreateDogs: migrated/, output)
            end
          end
        end
      end

      def write_models_for_animals
        # make a directory for the animals migration
        FileUtils.mkdir_p("#{app_path}/db/animals_migrate")
        # move the dogs migration if it unless it already lives there
        FileUtils.mv(Dir.glob("#{app_path}/db/migrate/**/*dogs.rb").first, "db/animals_migrate/") unless Dir.glob("#{app_path}/db/animals_migrate/**/*dogs.rb").first
        # delete the dogs migration if it's still present in the
        # migrate folder. This is necessary because sometimes
        # the code isn't fast enough and an extra migration gets made
        FileUtils.rm(Dir.glob("#{app_path}/db/migrate/**/*dogs.rb").first) if Dir.glob("#{app_path}/db/migrate/**/*dogs.rb").first

        # change the base of the dog model
        app_path("/app/models/dog.rb") do |file_name|
          file = File.read("#{app_path}/app/models/dog.rb")
          file.sub!(/ApplicationRecord/, "AnimalsBase")
          File.write(file_name, file)
        end

        # create the base model for dog to inherit from
        File.open("#{app_path}/app/models/animals_base.rb", "w") do |file|
          file.write(<<~EOS)
            class AnimalsBase < ActiveRecord::Base
              self.abstract_class = true

              establish_connection :animals
            end
          EOS
        end
      end

      def generate_models_for_animals
        rails "generate", "model", "book", "title:string"
        rails "generate", "model", "dog", "name:string"
        write_models_for_animals
        reload
      end

      test "db:create and db:drop works on all databases for env" do
        require "#{app_path}/config/environment"
        ActiveRecord::Base.configurations.configs_for(env_name: Rails.env).each do |db_config|
          db_create_and_drop db_config.spec_name, db_config.config["database"]
        end
      end

      test "db:create:namespace and db:drop:namespace works on specified databases" do
        require "#{app_path}/config/environment"
        ActiveRecord::Base.configurations.configs_for(env_name: Rails.env).each do |db_config|
          db_create_and_drop_namespace db_config.spec_name, db_config.config["database"]
        end
      end

      test "db:migrate and db:schema:dump and db:schema:load works on all databases" do
        require "#{app_path}/config/environment"
        db_migrate_and_schema_dump_and_load "schema"
      end

      test "db:migrate and db:structure:dump and db:structure:load works on all databases" do
        require "#{app_path}/config/environment"
        db_migrate_and_schema_dump_and_load "structure"
      end

      test "db:migrate:namespace works" do
        require "#{app_path}/config/environment"
        ActiveRecord::Base.configurations.configs_for(env_name: Rails.env).each do |db_config|
          db_migrate_namespaced db_config.spec_name
        end
      end

      test "db:migrate:down and db:migrate:up without a namespace raises in a multi-db application" do
        require "#{app_path}/config/environment"

        app_file "db/migrate/01_one_migration.rb", <<-MIGRATION
          class OneMigration < ActiveRecord::Migration::Current
          end
        MIGRATION

        db_up_and_down "01"
      end

      test "db:migrate:down:namespace and db:migrate:up:namespace works" do
        require "#{app_path}/config/environment"

        app_file "db/migrate/01_one_migration.rb", <<-MIGRATION
          class OneMigration < ActiveRecord::Migration::Current
          end
        MIGRATION

        app_file "db/animals_migrate/02_two_migration.rb", <<-MIGRATION
          class TwoMigration < ActiveRecord::Migration::Current
          end
        MIGRATION

        db_up_and_down "01", "primary"
        db_up_and_down "02", "animals"
      end

      test "db:migrate:status works on all databases" do
        require "#{app_path}/config/environment"
        db_migrate_and_migrate_status
      end

      test "db:migrate:status:namespace works" do
        require "#{app_path}/config/environment"
        ActiveRecord::Base.configurations.configs_for(env_name: Rails.env).each do |db_config|
          db_migrate_namespaced db_config.spec_name
          db_migrate_status_namespaced db_config.spec_name
        end
      end

      test "db:schema:cache:dump works on all databases" do
        require "#{app_path}/config/environment"
        db_migrate_and_schema_cache_dump
      end

      test "db:schema:cache:clear works on all databases" do
        require "#{app_path}/config/environment"
        db_migrate_and_schema_cache_dump_and_schema_cache_clear
      end

      test "db:prepare works on all databases" do
        require "#{app_path}/config/environment"
        db_prepare
      end
    end
  end
end