require 'rails_helper' describe ApplicationRequest do before do ApplicationRequest.last_flush = Time.now.utc $redis.flushall end after do ApplicationRequest.clear_cache! end def inc(key, opts = nil) ApplicationRequest.increment!(key, opts) end def disable_date_flush! freeze_time(Time.now) ApplicationRequest.last_flush = Time.now.utc end context "readonly test" do it 'works even if redis is in readonly' do disable_date_flush! inc(:http_total) inc(:http_total) $redis.without_namespace.stubs(:incr).raises(Redis::CommandError.new("READONLY")) $redis.without_namespace.stubs(:eval).raises(Redis::CommandError.new("READONLY")) # flush will be deferred no error raised inc(:http_total, autoflush: 3) ApplicationRequest.write_cache! $redis.without_namespace.unstub(:incr) $redis.without_namespace.unstub(:eval) inc(:http_total, autoflush: 3) expect(ApplicationRequest.http_total.first.count).to eq(3) end end it 'logs nothing for an unflushed increment' do ApplicationRequest.increment!(:anon) expect(ApplicationRequest.count).to eq(0) end it 'can automatically flush' do disable_date_flush! inc(:http_total) inc(:http_total) inc(:http_total, autoflush: 3) expect(ApplicationRequest.http_total.first.count).to eq(3) inc(:http_total) inc(:http_total) inc(:http_total, autoflush: 3) expect(ApplicationRequest.http_total.first.count).to eq(6) end it 'can flush based on time' do t1 = Time.now.utc.at_midnight freeze_time(t1) ApplicationRequest.write_cache! inc(:http_total) expect(ApplicationRequest.count).to eq(0) freeze_time(t1 + ApplicationRequest.autoflush_seconds + 1) inc(:http_total) expect(ApplicationRequest.count).to eq(1) end it 'flushes yesterdays results' do t1 = Time.now.utc.at_midnight freeze_time(t1) inc(:http_total) freeze_time(t1.tomorrow) inc(:http_total) ApplicationRequest.write_cache! expect(ApplicationRequest.count).to eq(2) end it 'clears cache correctly' do # otherwise we have test pollution inc(:anon) ApplicationRequest.clear_cache! ApplicationRequest.write_cache! expect(ApplicationRequest.count).to eq(0) end it 'logs a few counts once flushed' do time = Time.now.at_midnight freeze_time(time) 3.times { inc(:http_total) } 2.times { inc(:http_2xx) } 4.times { inc(:http_3xx) } ApplicationRequest.write_cache! expect(ApplicationRequest.http_total.first.count).to eq(3) expect(ApplicationRequest.http_2xx.first.count).to eq(2) expect(ApplicationRequest.http_3xx.first.count).to eq(4) end end