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require 'test/unit'
require 'timeout'
require 'tempfile'
require_relative 'envutil'
class TestSignal < Test::Unit::TestCase
def have_fork?
begin
Process.fork {}
return true
rescue NotImplementedError
return false
end
end
def test_signal
return unless Process.respond_to?(:kill)
begin
x = 0
oldtrap = Signal.trap(:INT) {|sig| x = 2 }
Process.kill :INT, Process.pid
10.times do
break if 2 == x
sleep 0.1
end
assert_equal 2, x
Signal.trap(:INT) { raise "Interrupt" }
ex = assert_raise(RuntimeError) {
Process.kill :INT, Process.pid
sleep 0.1
}
assert_kind_of Exception, ex
assert_match(/Interrupt/, ex.message)
ensure
Signal.trap :INT, oldtrap if oldtrap
end
end
def test_signal_process_group
return unless Process.respond_to?(:kill)
return unless Process.respond_to?(:pgroup) # for mswin32
bug4362 = '[ruby-dev:43169]'
assert_nothing_raised(bug4362) do
pid = Process.spawn(EnvUtil.rubybin, '-e', '"sleep 10"', :pgroup => true)
Process.kill(:"-TERM", pid)
Process.waitpid(pid)
assert_equal(true, $?.signaled?)
assert_equal(Signal.list["TERM"], $?.termsig)
end
end
def test_exit_action
return unless have_fork? # skip this test
begin
r, w = IO.pipe
r0, w0 = IO.pipe
pid = Process.spawn(EnvUtil.rubybin, '-e', <<-'End', 3=>w, 4=>r0)
w = IO.new(3, "w")
r0 = IO.new(4, "r")
Signal.trap(:USR1, "EXIT")
w.syswrite("a")
Thread.start { sleep(2) }
r0.sysread(4096)
End
r.sysread(1)
sleep 0.1
assert_nothing_raised("[ruby-dev:26128]") {
Process.kill(:USR1, pid)
begin
Timeout.timeout(3) {
Process.waitpid pid
}
rescue Timeout::Error
Process.kill(:TERM, pid)
raise
end
}
ensure
r.close
w.close
r0.close
w0.close
end
end
def test_invalid_signal_name
return unless Process.respond_to?(:kill)
assert_raise(ArgumentError) { Process.kill(:XXXXXXXXXX, $$) }
end
def test_signal_exception
assert_raise(ArgumentError) { SignalException.new }
assert_raise(ArgumentError) { SignalException.new(-1) }
assert_raise(ArgumentError) { SignalException.new(:XXXXXXXXXX) }
Signal.list.each do |signm, signo|
next if signm == "EXIT"
assert_equal(SignalException.new(signm).signo, signo)
assert_equal(SignalException.new(signm.to_sym).signo, signo)
assert_equal(SignalException.new(signo).signo, signo)
end
end
def test_interrupt
assert_raise(Interrupt) { raise Interrupt.new }
end
def test_signal2
return unless Process.respond_to?(:kill)
begin
x = false
oldtrap = Signal.trap(:INT) {|sig| x = true }
GC.start
assert_raise(ArgumentError) { Process.kill }
Timeout.timeout(10) do
x = false
Process.kill(SignalException.new(:INT).signo, $$)
sleep(0.01) until x
x = false
Process.kill("INT", $$)
sleep(0.01) until x
x = false
Process.kill("SIGINT", $$)
sleep(0.01) until x
x = false
o = Object.new
def o.to_str; "SIGINT"; end
Process.kill(o, $$)
sleep(0.01) until x
end
assert_raise(ArgumentError) { Process.kill(Object.new, $$) }
ensure
Signal.trap(:INT, oldtrap) if oldtrap
end
end
def test_trap
return unless Process.respond_to?(:kill)
begin
oldtrap = Signal.trap(:INT) {|sig| }
assert_raise(ArgumentError) { Signal.trap }
assert_raise(SecurityError) do
s = proc {}.taint
Signal.trap(:INT, s)
end
# FIXME!
Signal.trap(:INT, nil)
Signal.trap(:INT, "")
Signal.trap(:INT, "SIG_IGN")
Signal.trap(:INT, "IGNORE")
Signal.trap(:INT, "SIG_DFL")
Signal.trap(:INT, "SYSTEM_DEFAULT")
Signal.trap(:INT, "EXIT")
Signal.trap(:INT, "xxxxxx")
Signal.trap(:INT, "xxxx")
Signal.trap(SignalException.new(:INT).signo, "SIG_DFL")
assert_raise(ArgumentError) { Signal.trap(-1, "xxxx") }
o = Object.new
def o.to_str; "SIGINT"; end
Signal.trap(o, "SIG_DFL")
assert_raise(ArgumentError) { Signal.trap("XXXXXXXXXX", "SIG_DFL") }
ensure
Signal.trap(:INT, oldtrap) if oldtrap
end
end
def test_kill_immediately_before_termination
return unless have_fork? # skip this test
r, w = IO.pipe
pid = Process.fork do
r.close
Signal.trap(:USR1) { w.syswrite("foo") }
Process.kill :USR1, $$
end
w.close
assert_equal(r.read, "foo")
end
def test_signal_requiring
t = Tempfile.new(%w"require_ensure_test .rb")
t.puts "sleep"
t.close
error = IO.popen([EnvUtil.rubybin, "-e", <<EOS, t.path, :err => File::NULL]) do |child|
trap(:INT, "DEFAULT")
th = Thread.new do
begin
require ARGV[0]
ensure
Marshal.dump($!, STDOUT)
STDOUT.flush
end
end
Thread.pass while th.running?
Process.kill(:INT, $$)
th.join
EOS
Marshal.load(child)
end
t.close!
assert_nil(error)
end
end
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