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
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::AsyncIndexes::MigrationHelpers, feature_category: :database do
let(:migration) { ActiveRecord::Migration.new.extend(described_class) }
let(:index_model) { Gitlab::Database::AsyncIndexes::PostgresAsyncIndex }
let(:connection) { ApplicationRecord.connection }
let(:table_name) { '_test_async_indexes' }
let(:index_name) { "index_#{table_name}_on_id" }
before do
allow(migration).to receive(:puts)
end
describe '#unprepare_async_index' do
let!(:async_index) { create(:postgres_async_index, name: index_name) }
it 'destroys the record' do
expect do
migration.unprepare_async_index(table_name, 'id')
end.to change { index_model.where(name: index_name).count }.by(-1)
end
context 'when an explicit name is given' do
let(:index_name) { 'my_test_async_index' }
it 'destroys the record' do
expect do
migration.unprepare_async_index(table_name, 'id', name: index_name)
end.to change { index_model.where(name: index_name).count }.by(-1)
end
end
context 'when the async index table does not exist' do
it 'does not raise an error' do
connection.drop_table(:postgres_async_indexes)
expect(index_model).not_to receive(:find_by)
expect { migration.unprepare_async_index(table_name, 'id') }.not_to raise_error
end
end
end
describe '#unprepare_async_index_by_name' do
let(:index_name) { "index_#{table_name}_on_id" }
let!(:async_index) { create(:postgres_async_index, name: index_name) }
it 'destroys the record' do
expect do
migration.unprepare_async_index_by_name(table_name, index_name)
end.to change { index_model.where(name: index_name).count }.by(-1)
end
context 'when the async index table does not exist' do
it 'does not raise an error' do
connection.drop_table(:postgres_async_indexes)
expect(index_model).not_to receive(:find_by)
expect { migration.unprepare_async_index_by_name(table_name, index_name) }.not_to raise_error
end
end
end
describe '#prepare_async_index' do
before do
connection.create_table(table_name)
end
it 'creates the record for the async index' do
expect do
migration.prepare_async_index(table_name, 'id')
end.to change { index_model.where(name: index_name).count }.by(1)
record = index_model.find_by(name: index_name)
expect(record.table_name).to eq(table_name)
expect(record.definition).to match(/CREATE INDEX CONCURRENTLY "#{index_name}"/)
end
context 'when an explicit name is given' do
let(:index_name) { 'my_async_index_name' }
it 'creates the record with the given name' do
expect do
migration.prepare_async_index(table_name, 'id', name: index_name)
end.to change { index_model.where(name: index_name).count }.by(1)
record = index_model.find_by(name: index_name)
expect(record.table_name).to eq(table_name)
expect(record.definition).to match(/CREATE INDEX CONCURRENTLY "#{index_name}"/)
end
end
context 'when the index already exists' do
it 'does not create the record' do
connection.add_index(table_name, 'id', name: index_name)
expect do
migration.prepare_async_index(table_name, 'id')
end.not_to change { index_model.where(name: index_name).count }
end
end
context 'when the record already exists' do
it 'does attempt to create the record' do
create(:postgres_async_index, table_name: table_name, name: index_name)
expect do
migration.prepare_async_index(table_name, 'id')
end.not_to change { index_model.where(name: index_name).count }
end
it 'updates definition if changed' do
index = create(:postgres_async_index, table_name: table_name, name: index_name, definition: '...')
expect do
migration.prepare_async_index(table_name, 'id', name: index_name)
end.to change { index.reload.definition }
end
it 'does not update definition if not changed' do
definition = "CREATE INDEX CONCURRENTLY \"index_#{table_name}_on_id\" ON \"#{table_name}\" (\"id\")"
index = create(:postgres_async_index, table_name: table_name, name: index_name, definition: definition)
expect do
migration.prepare_async_index(table_name, 'id', name: index_name)
end.not_to change { index.reload.updated_at }
end
end
context 'when the async index table does not exist' do
it 'does not raise an error' do
connection.drop_table(:postgres_async_indexes)
expect(index_model).not_to receive(:safe_find_or_create_by!)
expect { migration.prepare_async_index(table_name, 'id') }.not_to raise_error
end
end
end
describe '#prepare_async_index_removal' do
before do
connection.create_table(table_name)
connection.add_index(table_name, 'id', name: index_name)
end
it 'creates the record for the async index removal' do
expect do
migration.prepare_async_index_removal(table_name, 'id', name: index_name)
end.to change { index_model.where(name: index_name).count }.by(1)
record = index_model.find_by(name: index_name)
expect(record.table_name).to eq(table_name)
expect(record.definition).to match(/DROP INDEX CONCURRENTLY "#{index_name}"/)
end
context 'when the index does not exist' do
it 'does not create the record' do
connection.remove_index(table_name, 'id', name: index_name)
expect do
migration.prepare_async_index_removal(table_name, 'id', name: index_name)
end.not_to change { index_model.where(name: index_name).count }
end
end
context 'when the record already exists' do
it 'does attempt to create the record' do
create(:postgres_async_index, table_name: table_name, name: index_name)
expect do
migration.prepare_async_index_removal(table_name, 'id', name: index_name)
end.not_to change { index_model.where(name: index_name).count }
end
end
end
end
|