117 lines
3 KiB
Ruby
117 lines
3 KiB
Ruby
|
# frozen_string_literal: true
|
||
|
|
||
|
# Expects `worker_class` to be defined
|
||
|
RSpec.shared_examples 'reenqueuer' do
|
||
|
subject(:job) { worker_class.new }
|
||
|
|
||
|
before do
|
||
|
allow(job).to receive(:sleep) # faster tests
|
||
|
end
|
||
|
|
||
|
it 'implements lease_timeout' do
|
||
|
expect(job.lease_timeout).to be_a(ActiveSupport::Duration)
|
||
|
end
|
||
|
|
||
|
describe '#perform' do
|
||
|
it 'tries to obtain a lease' do
|
||
|
expect_to_obtain_exclusive_lease(job.lease_key)
|
||
|
|
||
|
job.perform
|
||
|
end
|
||
|
end
|
||
|
end
|
||
|
|
||
|
# Example usage:
|
||
|
#
|
||
|
# it_behaves_like 'it is rate limited to 1 call per', 5.seconds do
|
||
|
# subject { described_class.new }
|
||
|
# let(:rate_limited_method) { subject.perform }
|
||
|
# end
|
||
|
#
|
||
|
RSpec.shared_examples 'it is rate limited to 1 call per' do |minimum_duration|
|
||
|
before do
|
||
|
# Allow Timecop freeze and travel without the block form
|
||
|
Timecop.safe_mode = false
|
||
|
Timecop.freeze
|
||
|
|
||
|
time_travel_during_rate_limited_method(actual_duration)
|
||
|
end
|
||
|
|
||
|
after do
|
||
|
Timecop.return
|
||
|
Timecop.safe_mode = true
|
||
|
end
|
||
|
|
||
|
context 'when the work finishes in 0 seconds' do
|
||
|
let(:actual_duration) { 0 }
|
||
|
|
||
|
it 'sleeps exactly the minimum duration' do
|
||
|
expect(subject).to receive(:sleep).with(a_value_within(0.01).of(minimum_duration))
|
||
|
|
||
|
rate_limited_method
|
||
|
end
|
||
|
end
|
||
|
|
||
|
context 'when the work finishes in 10% of minimum duration' do
|
||
|
let(:actual_duration) { 0.1 * minimum_duration }
|
||
|
|
||
|
it 'sleeps 90% of minimum duration' do
|
||
|
expect(subject).to receive(:sleep).with(a_value_within(0.01).of(0.9 * minimum_duration))
|
||
|
|
||
|
rate_limited_method
|
||
|
end
|
||
|
end
|
||
|
|
||
|
context 'when the work finishes in 90% of minimum duration' do
|
||
|
let(:actual_duration) { 0.9 * minimum_duration }
|
||
|
|
||
|
it 'sleeps 10% of minimum duration' do
|
||
|
expect(subject).to receive(:sleep).with(a_value_within(0.01).of(0.1 * minimum_duration))
|
||
|
|
||
|
rate_limited_method
|
||
|
end
|
||
|
end
|
||
|
|
||
|
context 'when the work finishes exactly at minimum duration' do
|
||
|
let(:actual_duration) { minimum_duration }
|
||
|
|
||
|
it 'does not sleep' do
|
||
|
expect(subject).not_to receive(:sleep)
|
||
|
|
||
|
rate_limited_method
|
||
|
end
|
||
|
end
|
||
|
|
||
|
context 'when the work takes 10% longer than minimum duration' do
|
||
|
let(:actual_duration) { 1.1 * minimum_duration }
|
||
|
|
||
|
it 'does not sleep' do
|
||
|
expect(subject).not_to receive(:sleep)
|
||
|
|
||
|
rate_limited_method
|
||
|
end
|
||
|
end
|
||
|
|
||
|
context 'when the work takes twice as long as minimum duration' do
|
||
|
let(:actual_duration) { 2 * minimum_duration }
|
||
|
|
||
|
it 'does not sleep' do
|
||
|
expect(subject).not_to receive(:sleep)
|
||
|
|
||
|
rate_limited_method
|
||
|
end
|
||
|
end
|
||
|
|
||
|
def time_travel_during_rate_limited_method(actual_duration)
|
||
|
# Save the original implementation of ensure_minimum_duration
|
||
|
original_ensure_minimum_duration = subject.method(:ensure_minimum_duration)
|
||
|
|
||
|
allow(subject).to receive(:ensure_minimum_duration) do |minimum_duration, &block|
|
||
|
original_ensure_minimum_duration.call(minimum_duration) do
|
||
|
# Time travel inside the block inside ensure_minimum_duration
|
||
|
Timecop.travel(actual_duration) if actual_duration && actual_duration > 0
|
||
|
end
|
||
|
end
|
||
|
end
|
||
|
end
|