2018-03-04 10:09:32 -05:00
|
|
|
require_relative '../../spec_helper'
|
|
|
|
require_relative 'fixtures/common'
|
2017-05-07 08:04:49 -04:00
|
|
|
|
|
|
|
describe "Process.wait" do
|
2017-06-29 10:35:37 -04:00
|
|
|
ProcessSpecs.use_system_ruby(self)
|
|
|
|
|
2017-05-07 08:04:49 -04:00
|
|
|
before :all do
|
|
|
|
begin
|
|
|
|
leaked = Process.waitall
|
|
|
|
puts "leaked before wait specs: #{leaked}" unless leaked.empty?
|
|
|
|
rescue NotImplementedError
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
it "raises an Errno::ECHILD if there are no child processes" do
|
|
|
|
lambda { Process.wait }.should raise_error(Errno::ECHILD)
|
|
|
|
end
|
|
|
|
|
|
|
|
platform_is_not :windows do
|
|
|
|
it "returns its childs pid" do
|
|
|
|
pid = Process.spawn(ruby_cmd('exit'))
|
|
|
|
Process.wait.should == pid
|
|
|
|
end
|
|
|
|
|
|
|
|
it "sets $? to a Process::Status" do
|
|
|
|
pid = Process.spawn(ruby_cmd('exit'))
|
|
|
|
Process.wait
|
|
|
|
$?.should be_kind_of(Process::Status)
|
|
|
|
$?.pid.should == pid
|
|
|
|
end
|
|
|
|
|
|
|
|
it "waits for any child process if no pid is given" do
|
|
|
|
pid = Process.spawn(ruby_cmd('exit'))
|
|
|
|
Process.wait.should == pid
|
|
|
|
lambda { Process.kill(0, pid) }.should raise_error(Errno::ESRCH)
|
|
|
|
end
|
|
|
|
|
|
|
|
it "waits for a specific child if a pid is given" do
|
|
|
|
pid1 = Process.spawn(ruby_cmd('exit'))
|
|
|
|
pid2 = Process.spawn(ruby_cmd('exit'))
|
|
|
|
Process.wait(pid2).should == pid2
|
|
|
|
Process.wait(pid1).should == pid1
|
|
|
|
lambda { Process.kill(0, pid1) }.should raise_error(Errno::ESRCH)
|
|
|
|
lambda { Process.kill(0, pid2) }.should raise_error(Errno::ESRCH)
|
|
|
|
end
|
|
|
|
|
|
|
|
it "coerces the pid to an Integer" do
|
|
|
|
pid1 = Process.spawn(ruby_cmd('exit'))
|
|
|
|
Process.wait(mock_int(pid1)).should == pid1
|
|
|
|
lambda { Process.kill(0, pid1) }.should raise_error(Errno::ESRCH)
|
|
|
|
end
|
|
|
|
|
|
|
|
# This spec is probably system-dependent.
|
|
|
|
it "waits for a child whose process group ID is that of the calling process" do
|
|
|
|
pid1 = Process.spawn(ruby_cmd('exit'), pgroup: true)
|
|
|
|
pid2 = Process.spawn(ruby_cmd('exit'))
|
|
|
|
|
|
|
|
Process.wait(0).should == pid2
|
|
|
|
Process.wait.should == pid1
|
|
|
|
end
|
|
|
|
|
|
|
|
# This spec is probably system-dependent.
|
|
|
|
it "doesn't block if no child is available when WNOHANG is used" do
|
|
|
|
read, write = IO.pipe
|
|
|
|
pid = Process.fork do
|
|
|
|
read.close
|
|
|
|
Signal.trap("TERM") { Process.exit! }
|
|
|
|
write << 1
|
|
|
|
write.close
|
|
|
|
sleep
|
|
|
|
end
|
|
|
|
|
|
|
|
Process.wait(pid, Process::WNOHANG).should be_nil
|
|
|
|
|
|
|
|
# wait for the child to setup its TERM handler
|
|
|
|
write.close
|
|
|
|
read.read(1)
|
|
|
|
read.close
|
|
|
|
|
|
|
|
Process.kill("TERM", pid)
|
|
|
|
Process.wait.should == pid
|
|
|
|
end
|
|
|
|
|
|
|
|
it "always accepts flags=0" do
|
|
|
|
pid = Process.spawn(ruby_cmd('exit'))
|
|
|
|
Process.wait(-1, 0).should == pid
|
|
|
|
lambda { Process.kill(0, pid) }.should raise_error(Errno::ESRCH)
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|