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|
# frozen_string_literal: true
require 'spec_helper'
describe Gitlab::Metrics::System do
if File.exist?('/proc')
describe '.memory_usage' do
it "returns the process' memory usage in bytes" do
expect(described_class.memory_usage).to be > 0
end
end
describe '.file_descriptor_count' do
it 'returns the amount of open file descriptors' do
expect(described_class.file_descriptor_count).to be > 0
end
end
describe '.max_open_file_descriptors' do
it 'returns the max allowed open file descriptors' do
expect(described_class.max_open_file_descriptors).to be > 0
end
end
else
describe '.memory_usage' do
it 'returns 0.0' do
expect(described_class.memory_usage).to eq(0.0)
end
end
describe '.file_descriptor_count' do
it 'returns 0' do
expect(described_class.file_descriptor_count).to eq(0)
end
end
describe '.max_open_file_descriptors' do
it 'returns 0' do
expect(described_class.max_open_file_descriptors).to eq(0)
end
end
end
describe '.cpu_time' do
it 'returns a Float' do
expect(described_class.cpu_time).to be_an(Float)
end
end
describe '.real_time' do
it 'returns a Float' do
expect(described_class.real_time).to be_an(Float)
end
end
describe '.monotonic_time' do
it 'returns a Float' do
expect(described_class.monotonic_time).to be_an(Float)
end
end
describe '.thread_cpu_time' do
it 'returns cpu_time on supported platform' do
stub_const("Process::CLOCK_THREAD_CPUTIME_ID", 16)
expect(Process).to receive(:clock_gettime)
.with(16, kind_of(Symbol)) { 0.111222333 }
expect(described_class.thread_cpu_time).to eq(0.111222333)
end
it 'returns nil on unsupported platform' do
hide_const("Process::CLOCK_THREAD_CPUTIME_ID")
expect(described_class.thread_cpu_time).to be_nil
end
end
describe '.thread_cpu_duration' do
let(:start_time) { described_class.thread_cpu_time }
it 'returns difference between start and current time' do
stub_const("Process::CLOCK_THREAD_CPUTIME_ID", 16)
expect(Process).to receive(:clock_gettime)
.with(16, kind_of(Symbol))
.and_return(
0.111222333,
0.222333833
)
expect(described_class.thread_cpu_duration(start_time)).to eq(0.1111115)
end
it 'returns nil on unsupported platform' do
hide_const("Process::CLOCK_THREAD_CPUTIME_ID")
expect(described_class.thread_cpu_duration(start_time)).to be_nil
end
end
end
|
