| # Copyright 2015, Google Inc. |
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| |
| require 'grpc' |
| |
| Thread.abort_on_exception = true |
| |
| describe GRPC::Pool do |
| Pool = GRPC::Pool |
| |
| describe '#new' do |
| it 'raises if a non-positive size is used' do |
| expect { Pool.new(0) }.to raise_error |
| expect { Pool.new(-1) }.to raise_error |
| expect { Pool.new(Object.new) }.to raise_error |
| end |
| |
| it 'is constructed OK with a positive size' do |
| expect { Pool.new(1) }.not_to raise_error |
| end |
| end |
| |
| describe '#ready_for_work?' do |
| it 'before start it is not ready' do |
| p = Pool.new(1) |
| expect(p.ready_for_work?).to be(false) |
| end |
| |
| it 'it stops being ready after all workers jobs waiting or running' do |
| p = Pool.new(5) |
| p.start |
| job = proc { sleep(3) } # sleep so workers busy when done scheduling |
| 5.times do |
| expect(p.ready_for_work?).to be(true) |
| p.schedule(&job) |
| end |
| expect(p.ready_for_work?).to be(false) |
| end |
| |
| it 'it becomes ready again after jobs complete' do |
| p = Pool.new(5) |
| p.start |
| job = proc {} |
| 5.times do |
| expect(p.ready_for_work?).to be(true) |
| p.schedule(&job) |
| end |
| expect(p.ready_for_work?).to be(false) |
| sleep 5 # give the pool time do get at least one task done |
| expect(p.ready_for_work?).to be(true) |
| end |
| end |
| |
| describe '#schedule' do |
| it 'return if the pool is already stopped' do |
| p = Pool.new(1) |
| p.stop |
| job = proc {} |
| expect { p.schedule(&job) }.to_not raise_error |
| end |
| |
| it 'adds jobs that get run by the pool' do |
| p = Pool.new(1) |
| p.start |
| o, q = Object.new, Queue.new |
| job = proc { q.push(o) } |
| p.schedule(&job) |
| expect(q.pop).to be(o) |
| p.stop |
| end |
| end |
| |
| describe '#stop' do |
| it 'works when there are no scheduled tasks' do |
| p = Pool.new(1) |
| expect { p.stop }.not_to raise_error |
| end |
| |
| it 'stops jobs when there are long running jobs' do |
| p = Pool.new(1) |
| p.start |
| o, q = Object.new, Queue.new |
| job = proc do |
| sleep(5) # long running |
| q.push(o) |
| end |
| p.schedule(&job) |
| sleep(1) # should ensure the long job gets scheduled |
| expect { p.stop }.not_to raise_error |
| end |
| end |
| |
| describe '#start' do |
| it 'runs jobs as they are scheduled' do |
| p = Pool.new(5) |
| o, q = Object.new, Queue.new |
| p.start |
| n = 5 # arbitrary |
| n.times do |
| p.schedule(o, &q.method(:push)) |
| expect(q.pop).to be(o) |
| end |
| p.stop |
| end |
| end |
| end |