debian-mirror-gitlab/spec/lib/gitlab/sidekiq_middleware_spec.rb
2020-01-01 13:55:28 +05:30

143 lines
4.7 KiB
Ruby

# frozen_string_literal: true
require 'spec_helper'
require 'sidekiq/testing'
describe Gitlab::SidekiqMiddleware do
class TestWorker
include Sidekiq::Worker
def perform(_arg)
end
end
around do |example|
Sidekiq::Testing.inline! { example.run }
end
let(:worker_class) { TestWorker }
let(:job_args) { [0.01] }
# The test sets up a new server middleware stack, ensuring that the
# appropriate middlewares, as passed into server_configurator,
# are invoked.
# Additionally the test ensure that each middleware is
# 1) not failing
# 2) yielding exactly once
describe '.server_configurator' do
around do |example|
original = Sidekiq::Testing.server_middleware.dup
example.run
Sidekiq::Testing.instance_variable_set :@server_chain, original
end
let(:middleware_expected_args) { [a_kind_of(worker_class), hash_including({ 'args' => job_args }), anything] }
let(:all_sidekiq_middlewares) do
[
Gitlab::SidekiqMiddleware::Monitor,
Gitlab::SidekiqMiddleware::BatchLoader,
Gitlab::SidekiqMiddleware::CorrelationLogger,
Gitlab::SidekiqMiddleware::InstrumentationLogger,
Gitlab::SidekiqStatus::ServerMiddleware,
Gitlab::SidekiqMiddleware::Metrics,
Gitlab::SidekiqMiddleware::ArgumentsLogger,
Gitlab::SidekiqMiddleware::MemoryKiller,
Gitlab::SidekiqMiddleware::RequestStoreMiddleware
]
end
let(:enabled_sidekiq_middlewares) { all_sidekiq_middlewares - disabled_sidekiq_middlewares }
before do
Sidekiq::Testing.server_middleware.clear
Sidekiq::Testing.server_middleware(&described_class.server_configurator(
metrics: metrics,
arguments_logger: arguments_logger,
memory_killer: memory_killer,
request_store: request_store
))
enabled_sidekiq_middlewares.each do |middleware|
expect_any_instance_of(middleware).to receive(:call).with(*middleware_expected_args).once.and_call_original
end
disabled_sidekiq_middlewares.each do |middleware|
expect_any_instance_of(Gitlab::SidekiqMiddleware::ArgumentsLogger).not_to receive(:call)
end
end
context "all optional middlewares off" do
let(:metrics) { false }
let(:arguments_logger) { false }
let(:memory_killer) { false }
let(:request_store) { false }
let(:disabled_sidekiq_middlewares) do
[
Gitlab::SidekiqMiddleware::Metrics,
Gitlab::SidekiqMiddleware::ArgumentsLogger,
Gitlab::SidekiqMiddleware::MemoryKiller,
Gitlab::SidekiqMiddleware::RequestStoreMiddleware
]
end
it "passes through server middlewares" do
worker_class.perform_async(*job_args)
end
end
context "all optional middlewares on" do
let(:metrics) { true }
let(:arguments_logger) { true }
let(:memory_killer) { true }
let(:request_store) { true }
let(:disabled_sidekiq_middlewares) { [] }
it "passes through server middlewares" do
worker_class.perform_async(*job_args)
end
end
end
# The test sets up a new client middleware stack. The test ensures
# that each middleware is:
# 1) not failing
# 2) yielding exactly once
describe '.client_configurator' do
let(:chain) { Sidekiq::Middleware::Chain.new }
let(:job) { { 'args' => job_args } }
let(:queue) { 'default' }
let(:redis_pool) { Sidekiq.redis_pool }
let(:middleware_expected_args) { [worker_class_arg, job, queue, redis_pool] }
before do
described_class.client_configurator.call(chain)
end
shared_examples "a client middleware chain" do
# Its possible that a middleware could accidentally omit a yield call
# this will prevent the full middleware chain from being executed.
# This test ensures that this does not happen
it "invokes the chain" do
expect_any_instance_of(Gitlab::SidekiqStatus::ClientMiddleware).to receive(:call).with(*middleware_expected_args).once.and_call_original
expect_any_instance_of(Gitlab::SidekiqMiddleware::CorrelationInjector).to receive(:call).with(*middleware_expected_args).once.and_call_original
expect { |b| chain.invoke(worker_class_arg, job, queue, redis_pool, &b) }.to yield_control.once
end
end
# Sidekiq documentation states that the worker class could be a string
# or a class reference. We should test for both
context "handles string worker_class values" do
let(:worker_class_arg) { worker_class.to_s }
it_behaves_like "a client middleware chain"
end
context "handles string worker_class values" do
let(:worker_class_arg) { worker_class }
it_behaves_like "a client middleware chain"
end
end
end