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
|
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" do |t|
t.string :name
end
@connection.create_table "astronauts" do |t|
t.string :name
t.references :rocket
end
end
teardown do
if defined?(@connection)
@connection.execute "DROP TABLE IF EXISTS astronauts"
@connection.execute "DROP TABLE IF EXISTS rockets"
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 "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 "astronauts_rocket_id_fk", 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 "astronauts_rocket_id_fk", 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_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_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_schema_dumping
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: "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($stdout) { migration.migrate(:up) }
assert_equal ["houses_city_id_fk"], @connection.foreign_keys("houses").map(&:name)
ensure
silence_stream($stdout) { migration.migrate(:down) }
end
end
end
end
end
|
