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require 'test/unit'
require 'timeout'
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.method_defined?(:kill)
begin
x = 0
oldtrap = Signal.trap(:INT) {|sig| x = 2 }
Process.kill :INT, Process.pid
sleep 0.1
assert_equal 2, x
Signal.trap(:INT) { raise "Interrupt" }
ex = assert_raises(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_exit_action
return unless have_fork? # snip this test
begin
r, w = IO.pipe
r0, w0 = IO.pipe
pid = Process.fork {
Signal.trap(:USR1, "EXIT")
w0.close
w.syswrite("a")
Thread.start { Thread.pass }
r0.sysread(4096)
}
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
end
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