aboutsummaryrefslogtreecommitdiffstats
path: root/railties/test/generators/migration_generator_test.rb
blob: 6fac643ed029da8265e9f17df7443415377f9596 (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
require 'generators/generators_test_helper'
require 'rails/generators/rails/migration/migration_generator'

class MigrationGeneratorTest < Rails::Generators::TestCase
  include GeneratorsTestHelper

  def test_migration
    migration = "change_title_body_from_posts"
    run_generator [migration]
    assert_migration "db/migrate/#{migration}.rb", /class ChangeTitleBodyFromPosts < ActiveRecord::Migration/
  end

  def test_migrations_generated_simultaneously
    migrations = ["change_title_body_from_posts", "change_email_from_comments"]

    first_migration_number, second_migration_number = migrations.collect do |migration|
      run_generator [migration]
      file_name = migration_file_name "db/migrate/#{migration}.rb"

      File.basename(file_name).split('_').first
    end

    assert_not_equal first_migration_number, second_migration_number
  end

  def test_migration_with_class_name
    migration = "ChangeTitleBodyFromPosts"
    run_generator [migration]
    assert_migration "db/migrate/change_title_body_from_posts.rb", /class #{migration} < ActiveRecord::Migration/
  end

  def test_migration_with_invalid_file_name
    migration = "add_something:datetime"
    assert_raise ActiveRecord::IllegalMigrationNameError do
      run_generator [migration]
    end
  end

  def test_add_migration_with_attributes
    migration = "add_title_body_to_posts"
    run_generator [migration, "title:string", "body:text"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/add_column :posts, :title, :string/, change)
        assert_match(/add_column :posts, :body, :text/, change)
      end
    end
  end

  def test_remove_migration_with_indexed_attribute
    migration = "remove_title_body_from_posts"
    run_generator [migration, "title:string:index", "body:text"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/remove_column :posts, :title, :string/, change)
        assert_match(/remove_column :posts, :body, :text/, change)
        assert_match(/remove_index :posts, :title/, change)
      end
    end
  end

  def test_remove_migration_with_attributes
    migration = "remove_title_body_from_posts"
    run_generator [migration, "title:string", "body:text"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/remove_column :posts, :title, :string/, change)
        assert_match(/remove_column :posts, :body, :text/, change)
      end
    end
  end

  def test_remove_migration_with_references_options
    migration = "remove_references_from_books"
    run_generator [migration, "author:belongs_to", "distributor:references{polymorphic}"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/remove_reference :books, :author, index: true/, change)
        assert_match(/remove_reference :books, :distributor, polymorphic: true, index: true/, change)
      end
    end
  end

  def test_add_migration_with_attributes_and_indices
    migration = "add_title_with_index_and_body_to_posts"
    run_generator [migration, "title:string:index", "body:text", "user_id:integer:uniq"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/add_column :posts, :title, :string/, change)
        assert_match(/add_column :posts, :body, :text/, change)
        assert_match(/add_column :posts, :user_id, :integer/, change)
        assert_match(/add_index :posts, :title/, change)
        assert_match(/add_index :posts, :user_id, unique: true/, change)
      end
    end
  end

  def test_add_migration_with_attributes_and_wrong_index_declaration
    migration = "add_title_and_content_to_books"
    run_generator [migration, "title:string:inex", "content:text", "user_id:integer:unik"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/add_column :books, :title, :string/, change)
        assert_match(/add_column :books, :content, :text/, change)
        assert_match(/add_column :books, :user_id, :integer/, change)
      end
      assert_no_match(/add_index :books, :title/, content)
      assert_no_match(/add_index :books, :user_id/, content)
    end
  end

  def test_add_migration_with_attributes_without_type_and_index
    migration = "add_title_with_index_and_body_to_posts"
    run_generator [migration, "title:index", "body:text", "user_uuid:uniq"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/add_column :posts, :title, :string/, change)
        assert_match(/add_column :posts, :body, :text/, change)
        assert_match(/add_column :posts, :user_uuid, :string/, change)
        assert_match(/add_index :posts, :title/, change)
        assert_match(/add_index :posts, :user_uuid, unique: true/, change)
      end
    end
  end

  def test_add_migration_with_attributes_index_declaration_and_attribute_options
    migration = "add_title_and_content_to_books"
    run_generator [migration, "title:string{40}:index", "content:string{255}", "price:decimal{1,2}:index", "discount:decimal{3.4}:uniq"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/add_column :books, :title, :string, limit: 40/, change)
        assert_match(/add_column :books, :content, :string, limit: 255/, change)
        assert_match(/add_column :books, :price, :decimal, precision: 1, scale: 2/, change)
        assert_match(/add_column :books, :discount, :decimal, precision: 3, scale: 4/, change)
      end
      assert_match(/add_index :books, :title/, content)
      assert_match(/add_index :books, :price/, content)
      assert_match(/add_index :books, :discount, unique: true/, content)
    end
  end

  def test_add_migration_with_references_options
    migration = "add_references_to_books"
    run_generator [migration, "author:belongs_to", "distributor:references{polymorphic}"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/add_reference :books, :author, index: true/, change)
        assert_match(/add_reference :books, :distributor, polymorphic: true, index: true/, change)
      end
    end
  end

  def test_create_join_table_migration
    migration = "add_media_join_table"
    run_generator [migration, "artist_id", "musics:uniq"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/create_join_table :artists, :musics/, change)
        assert_match(/# t.index \[:artist_id, :music_id\]/, change)
        assert_match(/  t.index \[:music_id, :artist_id\], unique: true/, change)
      end
    end
  end

  def test_create_table_migration
    run_generator ["create_books", "title:string", "content:text"]
    assert_migration "db/migrate/create_books.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/create_table :books/, change)
        assert_match(/  t\.string :title/, change)
        assert_match(/  t\.text :content/, change)
      end
    end
  end

  def test_should_create_empty_migrations_if_name_not_start_with_add_or_remove_or_create
    migration = "delete_books"
    run_generator [migration, "title:string", "content:text"]

    assert_migration "db/migrate/#{migration}.rb" do |content|
      assert_method :change, content do |change|
        assert_match(/^\s*$/, change)
      end
    end
  end
  
  def test_properly_identifies_usage_file
    assert generator_class.send(:usage_path)
  end

  def test_migration_with_singular_table_name
    with_singular_table_name do
      migration = "add_title_body_to_post"
      run_generator [migration, 'title:string']
      assert_migration "db/migrate/#{migration}.rb" do |content|
        assert_method :change, content do |change|
          assert_match(/add_column :post, :title, :string/, change)
        end
      end
    end
  end

  def test_create_join_table_migration_with_singular_table_name
    with_singular_table_name do
      migration = "add_media_join_table"
      run_generator [migration, "artist_id", "music:uniq"]

      assert_migration "db/migrate/#{migration}.rb" do |content|
        assert_method :change, content do |change|
          assert_match(/create_join_table :artist, :music/, change)
          assert_match(/# t.index \[:artist_id, :music_id\]/, change)
          assert_match(/  t.index \[:music_id, :artist_id\], unique: true/, change)
        end
      end
    end
  end

  def test_create_table_migration_with_singular_table_name
    with_singular_table_name do
      run_generator ["create_book", "title:string", "content:text"]
      assert_migration "db/migrate/create_book.rb" do |content|
        assert_method :change, content do |change|
          assert_match(/create_table :book/, change)
          assert_match(/  t\.string :title/, change)
          assert_match(/  t\.text :content/, change)
        end
      end
    end
  end

  private

    def with_singular_table_name
      old_state = ActiveRecord::Base.pluralize_table_names
      ActiveRecord::Base.pluralize_table_names = false
      yield
    ensure
      ActiveRecord::Base.pluralize_table_names = old_state
    end
end