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