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-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-# * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-# * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-require 'grpc'
-
-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 '#jobs_waiting' do
- it 'at start, it is zero' do
- p = Pool.new(1)
- expect(p.jobs_waiting).to be(0)
- end
-
- it 'it increases, with each scheduled job if the pool is not running' do
- p = Pool.new(1)
- job = proc {}
- expect(p.jobs_waiting).to be(0)
- 5.times do |i|
- p.schedule(&job)
- expect(p.jobs_waiting).to be(i + 1)
- end
- end
-
- it 'it decreases as jobs are run' do
- p = Pool.new(1)
- job = proc {}
- expect(p.jobs_waiting).to be(0)
- 3.times do
- p.schedule(&job)
- end
- p.start
- sleep 2
- expect(p.jobs_waiting).to be(0)
- 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 pre-scheduled jobs' do
- p = Pool.new(2)
- o, q = Object.new, Queue.new
- n = 5 # arbitrary
- n.times { p.schedule(o, &q.method(:push)) }
- p.start
- n.times { expect(q.pop).to be(o) }
- p.stop
- end
-
- it 'runs jobs as they are scheduled ' do
- p = Pool.new(2)
- 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