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puyopuyotetr.is/spec/models/concerns/account_counters_spec.rb

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require 'rails_helper'
describe AccountCounters do
let!(:account) { Fabricate(:account) }
describe '#increment_count!' do
it 'increments the count' do
expect(account.followers_count).to eq 0
account.increment_count!(:followers_count)
expect(account.followers_count).to eq 1
end
it 'increments the count in multi-threaded an environment' do
increment_by = 15
wait_for_start = true
threads = Array.new(increment_by) do
Thread.new do
true while wait_for_start
account.increment_count!(:statuses_count)
end
end
wait_for_start = false
threads.each(&:join)
expect(account.statuses_count).to eq increment_by
end
end
describe '#decrement_count!' do
it 'decrements the count' do
account.followers_count = 15
account.save!
expect(account.followers_count).to eq 15
account.decrement_count!(:followers_count)
expect(account.followers_count).to eq 14
end
it 'decrements the count in multi-threaded an environment' do
decrement_by = 10
wait_for_start = true
account.statuses_count = 15
account.save!
threads = Array.new(decrement_by) do
Thread.new do
true while wait_for_start
account.decrement_count!(:statuses_count)
end
end
wait_for_start = false
threads.each(&:join)
expect(account.statuses_count).to eq 5
end
end
end