hydra/test/worker_test.rb

61 lines
1.8 KiB
Ruby

require 'test_helper'
class WorkerTest < Test::Unit::TestCase
context "with a file to test and a destination to verify" do
setup do
FileUtils.rm_f(target_file)
end
teardown do
FileUtils.rm_f(target_file)
end
# run the worker in the foreground and the requests in the background
should "run a test in the foreground" do
num_runners = 4
pipe = Hydra::Pipe.new
child = Process.fork do
request_a_file_and_verify_completion(pipe, num_runners)
end
run_the_worker(pipe, num_runners)
Process.wait(child)
end
# inverse of the above test to run the worker in the background
should "run a test in the background" do
num_runners = 4
pipe = Hydra::Pipe.new
child = Process.fork do
run_the_worker(pipe, num_runners)
end
request_a_file_and_verify_completion(pipe, num_runners)
Process.wait(child)
end
end
module WorkerTestHelper
def run_the_worker(pipe, num_runners)
pipe.identify_as_child
Hydra::Worker.new({:io => pipe, :runners => num_runners, :options => {}})
end
def request_a_file_and_verify_completion(pipe, num_runners)
pipe.identify_as_parent
pipe.gets # grab the WorkerBegin
num_runners.times do
response = pipe.gets # grab the RequestFile
assert response.is_a?(Hydra::Messages::Worker::RequestFile), "Expected RequestFile but got #{response.class.to_s}"
end
pipe.write(Hydra::Messages::Master::RunFile.new(:file => test_file))
assert pipe.gets.is_a?(Hydra::Messages::Worker::Results)
pipe.write(Hydra::Messages::Master::Shutdown.new)
assert File.exists?(target_file)
assert_equal "HYDRA", File.read(target_file)
end
end
include WorkerTestHelper
end