blob: 3d58f28ec1ed9508dbeb21d7ca4a04c92491b7ee (
plain)
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
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Memory::Instrumentation, feature_category: :application_performance do
include MemoryInstrumentationHelper
before do
verify_memory_instrumentation_available!
end
describe '.available?' do
it 'returns true' do
expect(described_class).to be_available
end
end
describe '.start_thread_memory_allocations' do
subject { described_class.start_thread_memory_allocations }
it 'a hash is returned' do
is_expected.to be_a(Hash)
end
context 'when feature is unavailable' do
before do
allow(described_class).to receive(:available?) { false }
end
it 'a nil is returned' do
is_expected.to be_nil
end
end
end
describe '.with_memory_allocations' do
let(:ntimes) { 100 }
subject do
described_class.with_memory_allocations do
Array.new(1000).map { '0' * 100 }
end
end
before do
expect(described_class).to receive(:start_thread_memory_allocations).and_call_original
expect(described_class).to receive(:measure_thread_memory_allocations).and_call_original
end
it 'a hash is returned' do
result = subject
expect(result).to include(
mem_objects: be > 1000,
mem_mallocs: be > 1000,
mem_bytes: be > 100_000, # 100 items * 100 bytes each
mem_total_bytes: eq(result[:mem_bytes] + 40 * result[:mem_objects])
)
end
context 'when feature is unavailable' do
before do
allow(described_class).to receive(:available?) { false }
end
it 'a nil is returned' do
is_expected.to be_nil
end
end
end
end
|