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
|
require 'spec_helper'
describe Gitlab::Sherlock::Transaction, lib: true do
let(:transaction) { described_class.new('POST', '/cat_pictures') }
describe '#id' do
it 'returns the transaction ID' do
expect(transaction.id).to be_an_instance_of(String)
end
end
describe '#type' do
it 'returns the type' do
expect(transaction.type).to eq('POST')
end
end
describe '#path' do
it 'returns the path' do
expect(transaction.path).to eq('/cat_pictures')
end
end
describe '#queries' do
it 'returns an Array of queries' do
expect(transaction.queries).to be_an_instance_of(Array)
end
end
describe '#file_samples' do
it 'returns an Array of file samples' do
expect(transaction.file_samples).to be_an_instance_of(Array)
end
end
describe '#started_at' do
it 'returns the start time' do
allow(transaction).to receive(:profile_lines).and_yield
transaction.run { 'cats are amazing' }
expect(transaction.started_at).to be_an_instance_of(Time)
end
end
describe '#finished_at' do
it 'returns the completion time' do
allow(transaction).to receive(:profile_lines).and_yield
transaction.run { 'cats are amazing' }
expect(transaction.finished_at).to be_an_instance_of(Time)
end
end
describe '#view_counts' do
it 'returns a Hash' do
expect(transaction.view_counts).to be_an_instance_of(Hash)
end
it 'sets the default value of a key to 0' do
expect(transaction.view_counts['cats.rb']).to be_zero
end
end
describe '#run' do
it 'runs the transaction' do
allow(transaction).to receive(:profile_lines).and_yield
retval = transaction.run { 'cats are amazing' }
expect(retval).to eq('cats are amazing')
end
end
describe '#duration' do
it 'returns the duration in seconds' do
start_time = Time.now
allow(transaction).to receive(:started_at).and_return(start_time)
allow(transaction).to receive(:finished_at).and_return(start_time + 5)
expect(transaction.duration).to be_within(0.1).of(5.0)
end
end
describe '#query_duration' do
it 'returns the total query duration in seconds' do
time = Time.now
query1 = Gitlab::Sherlock::Query.new('SELECT 1', time, time + 5)
query2 = Gitlab::Sherlock::Query.new('SELECT 2', time, time + 2)
transaction.queries << query1
transaction.queries << query2
expect(transaction.query_duration).to be_within(0.1).of(7.0)
end
end
describe '#to_param' do
it 'returns the transaction ID' do
expect(transaction.to_param).to eq(transaction.id)
end
end
describe '#sorted_queries' do
it 'returns the queries in descending order' do
start_time = Time.now
query1 = Gitlab::Sherlock::Query.new('SELECT 1', start_time, start_time)
query2 = Gitlab::Sherlock::Query
.new('SELECT 2', start_time, start_time + 5)
transaction.queries << query1
transaction.queries << query2
expect(transaction.sorted_queries).to eq([query2, query1])
end
end
describe '#sorted_file_samples' do
it 'returns the file samples in descending order' do
sample1 = Gitlab::Sherlock::FileSample.new(__FILE__, [], 10.0, 1)
sample2 = Gitlab::Sherlock::FileSample.new(__FILE__, [], 15.0, 1)
transaction.file_samples << sample1
transaction.file_samples << sample2
expect(transaction.sorted_file_samples).to eq([sample2, sample1])
end
end
describe '#find_query' do
it 'returns a Query when found' do
query = Gitlab::Sherlock::Query.new('SELECT 1', Time.now, Time.now)
transaction.queries << query
expect(transaction.find_query(query.id)).to eq(query)
end
it 'returns nil when no query could be found' do
expect(transaction.find_query('cats')).to be_nil
end
end
describe '#find_file_sample' do
it 'returns a FileSample when found' do
sample = Gitlab::Sherlock::FileSample.new(__FILE__, [], 10.0, 1)
transaction.file_samples << sample
expect(transaction.find_file_sample(sample.id)).to eq(sample)
end
it 'returns nil when no file sample could be found' do
expect(transaction.find_file_sample('cats')).to be_nil
end
end
describe '#profile_lines' do
describe 'when line profiling is enabled' do
it 'yields the block using the line profiler' do
allow(Gitlab::Sherlock).to receive(:enable_line_profiler?)
.and_return(true)
allow_any_instance_of(Gitlab::Sherlock::LineProfiler)
.to receive(:profile).and_return('cats are amazing', [])
retval = transaction.profile_lines { 'cats are amazing' }
expect(retval).to eq('cats are amazing')
end
end
describe 'when line profiling is disabled' do
it 'yields the block' do
allow(Gitlab::Sherlock).to receive(:enable_line_profiler?)
.and_return(false)
retval = transaction.profile_lines { 'cats are amazing' }
expect(retval).to eq('cats are amazing')
end
end
end
describe '#subscribe_to_active_record' do
let(:subscription) { transaction.subscribe_to_active_record }
let(:time) { Time.now }
let(:query_data) { { sql: 'SELECT 1', binds: [] } }
after do
ActiveSupport::Notifications.unsubscribe(subscription)
end
it 'tracks executed queries' do
expect(transaction).to receive(:track_query)
.with('SELECT 1', [], time, time)
subscription.publish('test', time, time, nil, query_data)
end
it 'only tracks queries triggered from the transaction thread' do
expect(transaction).not_to receive(:track_query)
Thread.new { subscription.publish('test', time, time, nil, query_data) }
.join
end
end
describe '#subscribe_to_action_view' do
let(:subscription) { transaction.subscribe_to_action_view }
let(:time) { Time.now }
let(:view_data) { { identifier: 'foo.rb' } }
after do
ActiveSupport::Notifications.unsubscribe(subscription)
end
it 'tracks rendered views' do
expect(transaction).to receive(:track_view).with('foo.rb')
subscription.publish('test', time, time, nil, view_data)
end
it 'only tracks views rendered from the transaction thread' do
expect(transaction).not_to receive(:track_view)
Thread.new { subscription.publish('test', time, time, nil, view_data) }
.join
end
end
end
|