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
|
# frozen_string_literal: true
require "cases/helper"
require "support/ddl_helper"
class Mysql2AdapterTest < ActiveRecord::Mysql2TestCase
include DdlHelper
def setup
@conn = ActiveRecord::Base.connection
@connection_handler = ActiveRecord::Base.connection_handler
end
def test_exec_query_nothing_raises_with_no_result_queries
assert_nothing_raised do
with_example_table do
@conn.exec_query("INSERT INTO ex (number) VALUES (1)")
@conn.exec_query("DELETE FROM ex WHERE number = 1")
end
end
end
def test_columns_for_distinct_zero_orders
assert_equal "posts.id",
@conn.columns_for_distinct("posts.id", [])
end
def test_columns_for_distinct_one_order
assert_equal "posts.created_at AS alias_0, posts.id",
@conn.columns_for_distinct("posts.id", ["posts.created_at desc"])
end
def test_columns_for_distinct_few_orders
assert_equal "posts.created_at AS alias_0, posts.position AS alias_1, posts.id",
@conn.columns_for_distinct("posts.id", ["posts.created_at desc", "posts.position asc"])
end
def test_columns_for_distinct_with_case
assert_equal(
"CASE WHEN author.is_active THEN UPPER(author.name) ELSE UPPER(author.email) END AS alias_0, posts.id",
@conn.columns_for_distinct("posts.id",
["CASE WHEN author.is_active THEN UPPER(author.name) ELSE UPPER(author.email) END"])
)
end
def test_columns_for_distinct_blank_not_nil_orders
assert_equal "posts.created_at AS alias_0, posts.id",
@conn.columns_for_distinct("posts.id", ["posts.created_at desc", "", " "])
end
def test_columns_for_distinct_with_arel_order
order = Object.new
def order.to_sql
"posts.created_at desc"
end
assert_equal "posts.created_at AS alias_0, posts.id",
@conn.columns_for_distinct("posts.id", [order])
end
def test_errors_for_bigint_fks_on_integer_pk_table_in_alter_table
# table old_cars has primary key of integer
error = assert_raises(ActiveRecord::MismatchedForeignKey) do
@conn.add_reference :engines, :old_car
@conn.add_foreign_key :engines, :old_cars
end
assert_includes error.message, <<~MSG.squish
Column `old_car_id` on table `engines` does not match column `id` on `old_cars`,
which has type `int(11)`. To resolve this issue, change the type of the `old_car_id`
column on `engines` to be :integer. (For example `t.integer :old_car_id`).
MSG
assert_not_nil error.cause
ensure
@conn.execute("ALTER TABLE engines DROP COLUMN old_car_id") rescue nil
end
def test_errors_for_bigint_fks_on_integer_pk_table_in_create_table
# table old_cars has primary key of integer
error = assert_raises(ActiveRecord::MismatchedForeignKey) do
@conn.execute(<<~SQL)
CREATE TABLE activerecord_unittest.foos (
id bigint NOT NULL AUTO_INCREMENT PRIMARY KEY,
old_car_id bigint,
INDEX index_foos_on_old_car_id (old_car_id),
CONSTRAINT fk_rails_ff771f3c96 FOREIGN KEY (old_car_id) REFERENCES old_cars (id)
)
SQL
end
assert_includes error.message, <<~MSG.squish
Column `old_car_id` on table `foos` does not match column `id` on `old_cars`,
which has type `int(11)`. To resolve this issue, change the type of the `old_car_id`
column on `foos` to be :integer. (For example `t.integer :old_car_id`).
MSG
assert_not_nil error.cause
ensure
@conn.drop_table :foos, if_exists: true
end
def test_errors_for_integer_fks_on_bigint_pk_table_in_create_table
# table old_cars has primary key of bigint
error = assert_raises(ActiveRecord::MismatchedForeignKey) do
@conn.execute(<<~SQL)
CREATE TABLE activerecord_unittest.foos (
id bigint NOT NULL AUTO_INCREMENT PRIMARY KEY,
car_id int,
INDEX index_foos_on_car_id (car_id),
CONSTRAINT fk_rails_ff771f3c96 FOREIGN KEY (car_id) REFERENCES cars (id)
)
SQL
end
assert_includes error.message, <<~MSG.squish
Column `car_id` on table `foos` does not match column `id` on `cars`,
which has type `bigint(20)`. To resolve this issue, change the type of the `car_id`
column on `foos` to be :bigint. (For example `t.bigint :car_id`).
MSG
assert_not_nil error.cause
ensure
@conn.drop_table :foos, if_exists: true
end
def test_errors_for_bigint_fks_on_string_pk_table_in_create_table
# table old_cars has primary key of string
error = assert_raises(ActiveRecord::MismatchedForeignKey) do
@conn.execute(<<~SQL)
CREATE TABLE activerecord_unittest.foos (
id bigint NOT NULL AUTO_INCREMENT PRIMARY KEY,
subscriber_id bigint,
INDEX index_foos_on_subscriber_id (subscriber_id),
CONSTRAINT fk_rails_ff771f3c96 FOREIGN KEY (subscriber_id) REFERENCES subscribers (nick)
)
SQL
end
assert_includes error.message, <<~MSG.squish
Column `subscriber_id` on table `foos` does not match column `nick` on `subscribers`,
which has type `varchar(255)`. To resolve this issue, change the type of the `subscriber_id`
column on `foos` to be :string. (For example `t.string :subscriber_id`).
MSG
assert_not_nil error.cause
ensure
@conn.drop_table :foos, if_exists: true
end
def test_errors_when_an_insert_query_is_called_while_preventing_writes
assert_raises(ActiveRecord::ReadOnlyError) do
@connection_handler.while_preventing_writes do
@conn.insert("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')")
end
end
end
def test_errors_when_an_update_query_is_called_while_preventing_writes
@conn.insert("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')")
assert_raises(ActiveRecord::ReadOnlyError) do
@connection_handler.while_preventing_writes do
@conn.update("UPDATE `engines` SET `engines`.`car_id` = '9989' WHERE `engines`.`car_id` = '138853948594'")
end
end
end
def test_errors_when_a_delete_query_is_called_while_preventing_writes
@conn.execute("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')")
assert_raises(ActiveRecord::ReadOnlyError) do
@connection_handler.while_preventing_writes do
@conn.execute("DELETE FROM `engines` where `engines`.`car_id` = '138853948594'")
end
end
end
def test_errors_when_a_replace_query_is_called_while_preventing_writes
@conn.execute("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')")
assert_raises(ActiveRecord::ReadOnlyError) do
@connection_handler.while_preventing_writes do
@conn.execute("REPLACE INTO `engines` SET `engines`.`car_id` = '249823948'")
end
end
end
def test_doesnt_error_when_a_select_query_is_called_while_preventing_writes
@conn.execute("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')")
@connection_handler.while_preventing_writes do
assert_equal 1, @conn.execute("SELECT `engines`.* FROM `engines` WHERE `engines`.`car_id` = '138853948594'").entries.count
end
end
def test_doesnt_error_when_a_show_query_is_called_while_preventing_writes
@connection_handler.while_preventing_writes do
assert_equal 2, @conn.execute("SHOW FULL FIELDS FROM `engines`").entries.count
end
end
def test_doesnt_error_when_a_set_query_is_called_while_preventing_writes
@connection_handler.while_preventing_writes do
assert_nil @conn.execute("SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci")
end
end
def test_doesnt_error_when_a_read_query_with_leading_chars_is_called_while_preventing_writes
@conn.execute("INSERT INTO `engines` (`car_id`) VALUES ('138853948594')")
@connection_handler.while_preventing_writes do
assert_equal 1, @conn.execute("(\n( SELECT `engines`.* FROM `engines` WHERE `engines`.`car_id` = '138853948594' ) )").entries.count
end
end
private
def with_example_table(definition = "id int auto_increment primary key, number int, data varchar(255)", &block)
super(@conn, "ex", definition, &block)
end
end
|