gitlab-org--gitlab-foss/spec/lib/gitlab/sidekiq_signals_spec.rb
2019-08-23 00:15:24 +12:00

71 lines
2 KiB
Ruby

# frozen_string_literal: true
require 'spec_helper'
describe Gitlab::SidekiqSignals do
describe '.install' do
let(:result) { Hash.new { |h, k| h[k] = 0 } }
let(:int_handler) { -> (_) { result['INT'] += 1 } }
let(:term_handler) { -> (_) { result['TERM'] += 1 } }
let(:other_handler) { -> (_) { result['OTHER'] += 1 } }
let(:signals) { { 'INT' => int_handler, 'TERM' => term_handler, 'OTHER' => other_handler } }
context 'not a process group leader' do
before do
allow(Process).to receive(:getpgrp) { Process.pid * 2 }
end
it 'does nothing' do
expect { described_class.install!(signals) }
.not_to change { signals }
end
end
context 'as a process group leader' do
before do
allow(Process).to receive(:getpgrp) { Process.pid }
end
it 'installs its own signal handlers for TERM and INT only' do
described_class.install!(signals)
expect(signals['INT']).not_to eq(int_handler)
expect(signals['TERM']).not_to eq(term_handler)
expect(signals['OTHER']).to eq(other_handler)
end
%w[INT TERM].each do |signal|
it "installs a forwarding signal handler for #{signal}" do
described_class.install!(signals)
expect(described_class)
.to receive(:trap)
.with(signal, 'IGNORE')
.and_return(:original_trap)
.ordered
expect(Process)
.to receive(:kill)
.with(signal, 0)
.ordered
expect(described_class)
.to receive(:trap)
.with(signal, :original_trap)
.ordered
signals[signal].call(:cli)
expect(result[signal]).to eq(1)
end
it "raises if sidekiq no longer traps SIG#{signal}" do
signals.delete(signal)
expect { described_class.install!(signals) }
.to raise_error(/Sidekiq should have registered/)
end
end
end
end
end