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require 'spec_helper'
describe Gitlab::BackgroundMigration do
describe '.queue' do
it 'returns background migration worker queue' do
expect(described_class.queue)
.to eq BackgroundMigrationWorker.sidekiq_options['queue']
end
end
describe '.steal' do
context 'when there are enqueued jobs present' do
let(:job) { double(:job, args: ['Foo', [10, 20]]) }
let(:queue) { [job] }
before do
allow(Sidekiq::Queue).to receive(:new)
.with(described_class.queue)
.and_return(queue)
allow(job).to receive(:queue)
.and_return(described_class.queue)
end
it 'steals jobs from a queue' do
expect(queue[0]).to receive(:delete).and_return(true)
expect(described_class).to receive(:perform).with('Foo', [10, 20])
described_class.steal('Foo')
end
it 'does not steal job that has already been taken' do
expect(queue[0]).to receive(:delete).and_return(false)
expect(described_class).not_to receive(:perform).with('Foo', [10, 20])
described_class.steal('Foo')
end
it 'does not steal jobs for a different migration' do
expect(described_class).not_to receive(:perform)
expect(queue[0]).not_to receive(:delete)
described_class.steal('Bar')
end
end
context 'when there are scheduled jobs present', :sidekiq, :redis do
it 'steals all jobs from the scheduled sets' do
Sidekiq::Testing.disable! do
BackgroundMigrationWorker.perform_in(10.minutes, 'Object')
expect(Sidekiq::ScheduledSet.new).to be_one
expect(described_class).to receive(:perform).with('Object', any_args)
described_class.steal('Object')
expect(Sidekiq::ScheduledSet.new).to be_none
end
end
end
context 'when there are enqueued and scheduled jobs present', :sidekiq, :redis do
it 'steals from the scheduled sets queue first' do
Sidekiq::Testing.disable! do
expect(described_class).to receive(:perform)
.with('Object', [1]).ordered
expect(described_class).to receive(:perform)
.with('Object', [2]).ordered
BackgroundMigrationWorker.perform_async('Object', [2])
BackgroundMigrationWorker.perform_in(10.minutes, 'Object', [1])
described_class.steal('Object')
end
end
end
end
describe '.perform' do
it 'performs a background migration' do
instance = double(:instance)
klass = double(:klass, new: instance)
expect(described_class).to receive(:const_get)
.with('Foo')
.and_return(klass)
expect(instance).to receive(:perform).with(10, 20)
described_class.perform('Foo', [10, 20])
end
end
end
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