Fix rack:attack flaky tests and test end of throttle period (#23799)

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Claire 2023-02-22 10:28:52 +01:00 committed by GitHub
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@ -10,6 +10,17 @@ describe Rack::Attack do
end
shared_examples 'throttled endpoint' do
before do
# Rack::Attack periods are not rolling, so avoid flaky tests by setting the time in a way
# to avoid crossing period boundaries.
# The code Rack::Attack uses to set periods is the following:
# https://github.com/rack/rack-attack/blob/v6.6.1/lib/rack/attack/cache.rb#L64-L66
# So we want to minimize `Time.now.to_i % period`
travel_to Time.zone.at((Time.now.to_i / period.seconds).to_i * period.seconds)
end
context 'when the number of requests is lower than the limit' do
it 'does not change the request status' do
limit.times do
@ -20,11 +31,16 @@ describe Rack::Attack do
end
context 'when the number of requests is higher than the limit' do
it 'returns http too many requests' do
it 'returns http too many requests after limit and returns to normal status after period' do
(limit * 2).times do |i|
request.call
expect(last_response.status).to eq(429) if i > limit
end
travel period
request.call
expect(last_response.status).to_not eq(429)
end
end
end
@ -33,7 +49,8 @@ describe Rack::Attack do
describe 'throttle excessive sign-up requests by IP address' do
context 'through the website' do
let(:limit) { 25 }
let(:limit) { 25 }
let(:period) { 5.minutes }
let(:request) { -> { post path, {}, 'REMOTE_ADDR' => remote_ip } }
context 'for exact path' do
@ -50,7 +67,8 @@ describe Rack::Attack do
end
context 'through the API' do
let(:limit) { 5 }
let(:limit) { 5 }
let(:period) { 30.minutes }
let(:request) { -> { post path, {}, 'REMOTE_ADDR' => remote_ip } }
context 'for exact path' do
@ -71,7 +89,8 @@ describe Rack::Attack do
end
describe 'throttle excessive sign-in requests by IP address' do
let(:limit) { 25 }
let(:limit) { 25 }
let(:period) { 5.minutes }
let(:request) { -> { post path, {}, 'REMOTE_ADDR' => remote_ip } }
context 'for exact path' do