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
|
# frozen_string_literal: true
require "cases/helper"
if ActiveRecord::Base.connection.supports_foreign_keys_in_create?
module ActiveRecord
class Migration
class ReferencesForeignKeyInCreateTest < ActiveRecord::TestCase
setup do
@connection = ActiveRecord::Base.connection
@connection.create_table(:testing_parents, force: true)
end
teardown do
@connection.drop_table "testings", if_exists: true
@connection.drop_table "testing_parents", if_exists: true
end
test "foreign keys can be created with the table" do
@connection.create_table :testings do |t|
t.references :testing_parent, foreign_key: true
end
fk = @connection.foreign_keys("testings").first
assert_equal "testings", fk.from_table
assert_equal "testing_parents", fk.to_table
end
test "no foreign key is created by default" do
@connection.create_table :testings do |t|
t.references :testing_parent
end
assert_equal [], @connection.foreign_keys("testings")
end
test "foreign keys can be created in one query when index is not added" do
assert_queries(1) do
@connection.create_table :testings do |t|
t.references :testing_parent, foreign_key: true, index: false
end
end
end
test "options hash can be passed" do
@connection.change_table :testing_parents do |t|
t.references :other, index: { unique: true }
end
@connection.create_table :testings do |t|
t.references :testing_parent, foreign_key: { primary_key: :other_id }
end
fk = @connection.foreign_keys("testings").find { |k| k.to_table == "testing_parents" }
assert_equal "other_id", fk.primary_key
end
test "to_table option can be passed" do
@connection.create_table :testings do |t|
t.references :parent, foreign_key: { to_table: :testing_parents }
end
fks = @connection.foreign_keys("testings")
assert_equal([["testings", "testing_parents", "parent_id"]],
fks.map { |fk| [fk.from_table, fk.to_table, fk.column] })
end
end
end
end
end
if ActiveRecord::Base.connection.supports_foreign_keys?
module ActiveRecord
class Migration
class ReferencesForeignKeyTest < ActiveRecord::TestCase
setup do
@connection = ActiveRecord::Base.connection
@connection.create_table(:testing_parents, force: true)
end
teardown do
@connection.drop_table "testings", if_exists: true
@connection.drop_table "testing_parents", if_exists: true
end
test "foreign keys cannot be added to polymorphic relations when creating the table" do
@connection.create_table :testings do |t|
assert_raises(ArgumentError) do
t.references :testing_parent, polymorphic: true, foreign_key: true
end
end
end
test "foreign keys can be created while changing the table" do
@connection.create_table :testings
@connection.change_table :testings do |t|
t.references :testing_parent, foreign_key: true
end
fk = @connection.foreign_keys("testings").first
assert_equal "testings", fk.from_table
assert_equal "testing_parents", fk.to_table
end
test "foreign keys are not added by default when changing the table" do
@connection.create_table :testings
@connection.change_table :testings do |t|
t.references :testing_parent
end
assert_equal [], @connection.foreign_keys("testings")
end
test "foreign keys accept options when changing the table" do
@connection.change_table :testing_parents do |t|
t.references :other, index: { unique: true }
end
@connection.create_table :testings
@connection.change_table :testings do |t|
t.references :testing_parent, foreign_key: { primary_key: :other_id }
end
fk = @connection.foreign_keys("testings").find { |k| k.to_table == "testing_parents" }
assert_equal "other_id", fk.primary_key
end
test "foreign keys cannot be added to polymorphic relations when changing the table" do
@connection.create_table :testings
@connection.change_table :testings do |t|
assert_raises(ArgumentError) do
t.references :testing_parent, polymorphic: true, foreign_key: true
end
end
end
test "foreign key column can be removed" do
@connection.create_table :testings do |t|
t.references :testing_parent, index: true, foreign_key: true
end
assert_difference "@connection.foreign_keys('testings').size", -1 do
@connection.remove_reference :testings, :testing_parent, foreign_key: true
end
end
test "removing column removes foreign key" do
@connection.create_table :testings do |t|
t.references :testing_parent, index: true, foreign_key: true
end
assert_difference "@connection.foreign_keys('testings').size", -1 do
@connection.remove_column :testings, :testing_parent_id
end
end
test "foreign key methods respect pluralize_table_names" do
begin
original_pluralize_table_names = ActiveRecord::Base.pluralize_table_names
ActiveRecord::Base.pluralize_table_names = false
@connection.create_table :testing
@connection.change_table :testing_parents do |t|
t.references :testing, foreign_key: true
end
fk = @connection.foreign_keys("testing_parents").first
assert_equal "testing_parents", fk.from_table
assert_equal "testing", fk.to_table
assert_difference "@connection.foreign_keys('testing_parents').size", -1 do
@connection.remove_reference :testing_parents, :testing, foreign_key: true
end
ensure
ActiveRecord::Base.pluralize_table_names = original_pluralize_table_names
@connection.drop_table "testing", if_exists: true
end
end
class CreateDogsMigration < ActiveRecord::Migration::Current
def change
create_table :dog_owners
create_table :dogs do |t|
t.references :dog_owner, foreign_key: true
end
end
end
def test_references_foreign_key_with_prefix
ActiveRecord::Base.table_name_prefix = "p_"
migration = CreateDogsMigration.new
silence_stream($stdout) { migration.migrate(:up) }
assert_equal 1, @connection.foreign_keys("p_dogs").size
ensure
silence_stream($stdout) { migration.migrate(:down) }
ActiveRecord::Base.table_name_prefix = nil
end
def test_references_foreign_key_with_suffix
ActiveRecord::Base.table_name_suffix = "_s"
migration = CreateDogsMigration.new
silence_stream($stdout) { migration.migrate(:up) }
assert_equal 1, @connection.foreign_keys("dogs_s").size
ensure
silence_stream($stdout) { migration.migrate(:down) }
ActiveRecord::Base.table_name_suffix = nil
end
test "multiple foreign keys can be added to the same table" do
@connection.create_table :testings do |t|
t.references :parent1, foreign_key: { to_table: :testing_parents }
t.references :parent2, foreign_key: { to_table: :testing_parents }
end
fks = @connection.foreign_keys("testings").sort_by(&:column)
fk_definitions = fks.map { |fk| [fk.from_table, fk.to_table, fk.column] }
assert_equal([["testings", "testing_parents", "parent1_id"],
["testings", "testing_parents", "parent2_id"]], fk_definitions)
end
test "multiple foreign keys can be removed to the selected one" do
@connection.create_table :testings do |t|
t.references :parent1, foreign_key: { to_table: :testing_parents }
t.references :parent2, foreign_key: { to_table: :testing_parents }
end
assert_difference "@connection.foreign_keys('testings').size", -1 do
@connection.remove_reference :testings, :parent1, foreign_key: { to_table: :testing_parents }
end
fks = @connection.foreign_keys("testings").sort_by(&:column)
fk_definitions = fks.map { |fk| [fk.from_table, fk.to_table, fk.column] }
assert_equal([["testings", "testing_parents", "parent2_id"]], fk_definitions)
end
end
end
end
else
class ReferencesWithoutForeignKeySupportTest < ActiveRecord::TestCase
setup do
@connection = ActiveRecord::Base.connection
@connection.create_table(:testing_parents, force: true)
end
teardown do
@connection.drop_table("testings", if_exists: true)
@connection.drop_table("testing_parents", if_exists: true)
end
test "ignores foreign keys defined with the table" do
@connection.create_table :testings do |t|
t.references :testing_parent, foreign_key: true
end
assert_includes @connection.data_sources, "testings"
end
end
end
|
