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
|
require 'cases/helper'
require 'support/ddl_helper'
require 'support/schema_dumping_helper'
if ActiveRecord::Base.connection.supports_foreign_keys?
module ActiveRecord
class Migration
class ForeignKeyTest < ActiveRecord::TestCase
include DdlHelper
include SchemaDumpingHelper
class Rocket < ActiveRecord::Base
end
class Astronaut < ActiveRecord::Base
end
setup do
@connection = ActiveRecord::Base.connection
@connection.create_table "rockets", force: true do |t|
t.string :name
end
@connection.create_table "astronauts", force: true do |t|
t.string :name
t.references :rocket
end
end
teardown do
if defined?(@connection)
@connection.drop_table "astronauts", if_exists: true
@connection.drop_table "rockets", if_exists: true
end
end
def test_foreign_keys
foreign_keys = @connection.foreign_keys("fk_test_has_fk")
assert_equal 1, foreign_keys.size
fk = foreign_keys.first
assert_equal "fk_test_has_fk", fk.from_table
assert_equal "fk_test_has_pk", fk.to_table
assert_equal "fk_id", fk.column
assert_equal "pk_id", fk.primary_key
assert_equal "fk_name", fk.name
end
def test_add_foreign_key_inferes_column
@connection.add_foreign_key :astronauts, :rockets
foreign_keys = @connection.foreign_keys("astronauts")
assert_equal 1, foreign_keys.size
fk = foreign_keys.first
assert_equal "astronauts", fk.from_table
assert_equal "rockets", fk.to_table
assert_equal "rocket_id", fk.column
assert_equal "id", fk.primary_key
assert_equal("fk_rails_78146ddd2e", fk.name)
end
def test_add_foreign_key_with_column
@connection.add_foreign_key :astronauts, :rockets, column: "rocket_id"
foreign_keys = @connection.foreign_keys("astronauts")
assert_equal 1, foreign_keys.size
fk = foreign_keys.first
assert_equal "astronauts", fk.from_table
assert_equal "rockets", fk.to_table
assert_equal "rocket_id", fk.column
assert_equal "id", fk.primary_key
assert_equal("fk_rails_78146ddd2e", fk.name)
end
def test_add_foreign_key_with_non_standard_primary_key
with_example_table @connection, "space_shuttles", "pk integer PRIMARY KEY" do
@connection.add_foreign_key(:astronauts, :space_shuttles,
column: "rocket_id", primary_key: "pk", name: "custom_pk")
foreign_keys = @connection.foreign_keys("astronauts")
assert_equal 1, foreign_keys.size
fk = foreign_keys.first
assert_equal "astronauts", fk.from_table
assert_equal "space_shuttles", fk.to_table
assert_equal "pk", fk.primary_key
@connection.remove_foreign_key :astronauts, name: "custom_pk"
end
end
def test_add_on_delete_restrict_foreign_key
@connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_delete: :restrict
foreign_keys = @connection.foreign_keys("astronauts")
assert_equal 1, foreign_keys.size
fk = foreign_keys.first
if current_adapter?(:MysqlAdapter, :Mysql2Adapter)
# ON DELETE RESTRICT is the default on MySQL
assert_equal nil, fk.on_delete
else
assert_equal :restrict, fk.on_delete
end
end
def test_add_on_delete_cascade_foreign_key
@connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_delete: :cascade
foreign_keys = @connection.foreign_keys("astronauts")
assert_equal 1, foreign_keys.size
fk = foreign_keys.first
assert_equal :cascade, fk.on_delete
end
def test_add_on_delete_nullify_foreign_key
@connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_delete: :nullify
foreign_keys = @connection.foreign_keys("astronauts")
assert_equal 1, foreign_keys.size
fk = foreign_keys.first
assert_equal :nullify, fk.on_delete
end
def test_on_update_and_on_delete_raises_with_invalid_values
assert_raises ArgumentError do
@connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_delete: :invalid
end
assert_raises ArgumentError do
@connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_update: :invalid
end
end
def test_add_foreign_key_with_on_update
@connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_update: :nullify
foreign_keys = @connection.foreign_keys("astronauts")
assert_equal 1, foreign_keys.size
fk = foreign_keys.first
assert_equal :nullify, fk.on_update
end
def test_remove_foreign_key_inferes_column
@connection.add_foreign_key :astronauts, :rockets
assert_equal 1, @connection.foreign_keys("astronauts").size
@connection.remove_foreign_key :astronauts, :rockets
assert_equal [], @connection.foreign_keys("astronauts")
end
def test_remove_foreign_key_by_column
@connection.add_foreign_key :astronauts, :rockets, column: "rocket_id"
assert_equal 1, @connection.foreign_keys("astronauts").size
@connection.remove_foreign_key :astronauts, column: "rocket_id"
assert_equal [], @connection.foreign_keys("astronauts")
end
def test_remove_foreign_key_by_symbol_column
@connection.add_foreign_key :astronauts, :rockets, column: :rocket_id
assert_equal 1, @connection.foreign_keys("astronauts").size
@connection.remove_foreign_key :astronauts, column: :rocket_id
assert_equal [], @connection.foreign_keys("astronauts")
end
def test_remove_foreign_key_by_name
@connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", name: "fancy_named_fk"
assert_equal 1, @connection.foreign_keys("astronauts").size
@connection.remove_foreign_key :astronauts, name: "fancy_named_fk"
assert_equal [], @connection.foreign_keys("astronauts")
end
def test_remove_foreign_non_existing_foreign_key_raises
assert_raises ArgumentError do
@connection.remove_foreign_key :astronauts, :rockets
end
end
def test_schema_dumping
@connection.add_foreign_key :astronauts, :rockets
output = dump_table_schema "astronauts"
assert_match %r{\s+add_foreign_key "astronauts", "rockets"$}, output
end
def test_schema_dumping_with_options
output = dump_table_schema "fk_test_has_fk"
assert_match %r{\s+add_foreign_key "fk_test_has_fk", "fk_test_has_pk", column: "fk_id", primary_key: "pk_id", name: "fk_name"$}, output
end
def test_schema_dumping_on_delete_and_on_update_options
@connection.add_foreign_key :astronauts, :rockets, column: "rocket_id", on_delete: :nullify, on_update: :cascade
output = dump_table_schema "astronauts"
assert_match %r{\s+add_foreign_key "astronauts",.+on_update: :cascade,.+on_delete: :nullify$}, output
end
class CreateCitiesAndHousesMigration < ActiveRecord::Migration
def change
create_table("cities") { |t| }
create_table("houses") do |t|
t.column :city_id, :integer
end
add_foreign_key :houses, :cities, column: "city_id"
end
end
def test_add_foreign_key_is_reversible
migration = CreateCitiesAndHousesMigration.new
silence_stream($stdout) { migration.migrate(:up) }
assert_equal 1, @connection.foreign_keys("houses").size
ensure
silence_stream($stdout) { migration.migrate(:down) }
end
private
def silence_stream(stream)
old_stream = stream.dup
stream.reopen(IO::NULL)
stream.sync = true
yield
ensure
stream.reopen(old_stream)
old_stream.close
end
end
end
end
else
module ActiveRecord
class Migration
class NoForeignKeySupportTest < ActiveRecord::TestCase
setup do
@connection = ActiveRecord::Base.connection
end
def test_add_foreign_key_should_be_noop
@connection.add_foreign_key :clubs, :categories
end
def test_remove_foreign_key_should_be_noop
@connection.remove_foreign_key :clubs, :categories
end
def test_foreign_keys_should_raise_not_implemented
assert_raises NotImplementedError do
@connection.foreign_keys("clubs")
end
end
end
end
end
end
|