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# Copyright, 2020, by Samuel G. D. Williams. <http://www.codeotaku.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
require 'async/scheduler'
require 'async/barrier'
require 'net/http'
RSpec.describe Async::Scheduler, if: Async::Scheduler.supported? do
include_context Async::RSpec::Reactor
it "can intercept sleep" do
expect(reactor.scheduler).to receive(:kernel_sleep).with(0.001)
sleep(0.001)
end
describe 'Fiber.schedule' do
it "can start child task" do
fiber = Async do
Fiber.schedule{}
end.wait
expect(fiber).to_not be_nil
expect(fiber).to be_kind_of(Fiber)
end
end
describe 'Process.wait' do
it "can wait on child process" do
expect(reactor.scheduler).to receive(:process_wait).and_call_original
pid = ::Process.spawn("true")
_, status = Process.wait2(pid)
expect(status).to be_success
end
end
describe 'IO.pipe' do
let(:message) {"Helloooooo World!"}
it "can send message via pipe" do
input, output = IO.pipe
reactor.async do
sleep(0.001)
message.each_char do |character|
output.write(character)
end
output.close
end
expect(input.read).to be == message
input.close
end
it "can fetch website using Net::HTTP" do
barrier = Async::Barrier.new
events = []
3.times do |i|
barrier.async do
events << i
response = Net::HTTP.get(URI "https://www.codeotaku.com/index")
expect(response).to_not be_nil
events << i
end
end
barrier.wait
# The requests all get started concurrently:
expect(events.first(3)).to be == [0, 1, 2]
end
end
context "with thread" do
let(:queue) {Thread::Queue.new}
subject {Thread.new{queue.pop}}
it "can join thread" do
waiting = 0
3.times do
Async do
waiting += 1
subject.join
waiting -= 1
end
end
expect(waiting).to be == 3
queue.close
end
end
context "with queue" do
subject {Thread::Queue.new}
let(:item) {"Hello World"}
it "can pass items between thread and fiber" do
Async do
expect(subject.pop).to be == item
end
Thread.new do
expect(Fiber).to be_blocking
subject.push(item)
end.join
end
end
end
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