mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
387 lines
11 KiB
Ruby
387 lines
11 KiB
Ruby
# frozen_string_literal: false
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require 'test/unit'
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require 'timeout'
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require 'tempfile'
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class TestSignal < Test::Unit::TestCase
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def test_signal
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begin
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x = 0
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oldtrap = Signal.trap(:INT) {|sig| x = 2 }
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Process.kill :INT, Process.pid
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10.times do
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break if 2 == x
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sleep 0.1
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end
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assert_equal 2, x
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Signal.trap(:INT) { raise "Interrupt" }
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assert_raise_with_message(RuntimeError, /Interrupt/) {
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Process.kill :INT, Process.pid
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sleep 0.1
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}
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ensure
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Signal.trap :INT, oldtrap if oldtrap
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end
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end if Process.respond_to?(:kill)
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def test_signal_process_group
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bug4362 = '[ruby-dev:43169]'
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assert_nothing_raised(bug4362) do
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cmd = [ EnvUtil.rubybin, '--disable=gems' '-e', 'sleep 10' ]
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pid = Process.spawn(*cmd, :pgroup => true)
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Process.kill(:"-TERM", pid)
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Process.waitpid(pid)
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assert_equal(true, $?.signaled?)
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assert_equal(Signal.list["TERM"], $?.termsig)
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end
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end if Process.respond_to?(:kill) and
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Process.respond_to?(:pgroup) # for mswin32
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def test_exit_action
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if Signal.list[sig = "USR1"]
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term = :TERM
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else
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sig = "INT"
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term = :KILL
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end
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IO.popen([EnvUtil.rubybin, '--disable=gems', '-e', <<-"End"], 'r+') do |io|
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Signal.trap(:#{sig}, "EXIT")
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STDOUT.syswrite("a")
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Thread.start { sleep(2) }
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STDIN.sysread(4096)
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End
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pid = io.pid
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io.sysread(1)
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sleep 0.1
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assert_nothing_raised("[ruby-dev:26128]") {
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Process.kill(term, pid)
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begin
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Timeout.timeout(3) {
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Process.waitpid pid
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}
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rescue Timeout::Error
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if term
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Process.kill(term, pid)
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term = (:KILL if term != :KILL)
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retry
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end
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raise
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end
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}
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end
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end if Process.respond_to?(:kill)
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def test_invalid_signal_name
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assert_raise(ArgumentError) { Process.kill(:XXXXXXXXXX, $$) }
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assert_raise_with_message(ArgumentError, /\u{30eb 30d3 30fc}/) { Process.kill("\u{30eb 30d3 30fc}", $$) }
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end if Process.respond_to?(:kill)
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def test_signal_exception
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assert_raise(ArgumentError) { SignalException.new }
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assert_raise(ArgumentError) { SignalException.new(-1) }
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assert_raise(ArgumentError) { SignalException.new(:XXXXXXXXXX) }
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assert_raise_with_message(ArgumentError, /\u{30eb 30d3 30fc}/) { SignalException.new("\u{30eb 30d3 30fc}") }
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Signal.list.each do |signm, signo|
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next if signm == "EXIT"
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assert_equal(signo, SignalException.new(signm).signo, signm)
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assert_equal(signo, SignalException.new(signm.to_sym).signo, signm)
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assert_equal(signo, SignalException.new(signo).signo, signo)
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end
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e = assert_raise(ArgumentError) {SignalException.new("-SIGEXIT")}
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assert_not_match(/SIG-SIG/, e.message)
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end
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def test_interrupt
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assert_raise(Interrupt) { raise Interrupt.new }
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end
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def test_signal2
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begin
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x = false
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oldtrap = Signal.trap(:INT) {|sig| x = true }
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GC.start
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assert_raise(ArgumentError) { Process.kill }
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Timeout.timeout(10) do
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x = false
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Process.kill(SignalException.new(:INT).signo, $$)
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sleep(0.01) until x
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x = false
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Process.kill("INT", $$)
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sleep(0.01) until x
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x = false
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Process.kill("SIGINT", $$)
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sleep(0.01) until x
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x = false
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o = Object.new
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def o.to_str; "SIGINT"; end
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Process.kill(o, $$)
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sleep(0.01) until x
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end
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assert_raise(ArgumentError) { Process.kill(Object.new, $$) }
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ensure
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Signal.trap(:INT, oldtrap) if oldtrap
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end
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end if Process.respond_to?(:kill)
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def test_trap
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begin
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oldtrap = Signal.trap(:INT) {|sig| }
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assert_raise(ArgumentError) { Signal.trap }
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# FIXME!
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Signal.trap(:INT, nil)
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Signal.trap(:INT, "")
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Signal.trap(:INT, "SIG_IGN")
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Signal.trap(:INT, "IGNORE")
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Signal.trap(:INT, "SIG_DFL")
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Signal.trap(:INT, "SYSTEM_DEFAULT")
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Signal.trap(:INT, "EXIT")
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Signal.trap(:INT, "xxxxxx")
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Signal.trap(:INT, "xxxx")
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Signal.trap(SignalException.new(:INT).signo, "SIG_DFL")
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assert_raise(ArgumentError) { Signal.trap(-1, "xxxx") }
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o = Object.new
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def o.to_str; "SIGINT"; end
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Signal.trap(o, "SIG_DFL")
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assert_raise(ArgumentError) { Signal.trap("XXXXXXXXXX", "SIG_DFL") }
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assert_raise_with_message(ArgumentError, /\u{30eb 30d3 30fc}/) { Signal.trap("\u{30eb 30d3 30fc}", "SIG_DFL") }
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assert_raise(ArgumentError) { Signal.trap("EXIT\0") {} }
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ensure
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Signal.trap(:INT, oldtrap) if oldtrap
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end
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end if Process.respond_to?(:kill)
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%w"KILL STOP".each do |sig|
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if Signal.list.key?(sig)
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define_method("test_trap_uncatchable_#{sig}") do
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assert_raise(Errno::EINVAL, "SIG#{sig} is not allowed to be caught") { Signal.trap(sig) {} }
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end
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end
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end
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def test_sigexit
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assert_in_out_err([], 'Signal.trap(:EXIT) {print "OK"}', ["OK"])
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assert_in_out_err([], 'Signal.trap("EXIT") {print "OK"}', ["OK"])
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assert_in_out_err([], 'Signal.trap(:SIGEXIT) {print "OK"}', ["OK"])
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assert_in_out_err([], 'Signal.trap("SIGEXIT") {print "OK"}', ["OK"])
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assert_in_out_err([], 'Signal.trap(0) {print "OK"}', ["OK"])
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end
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def test_kill_immediately_before_termination
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Signal.list[sig = "USR1"] or sig = "INT"
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assert_in_out_err(["-e", <<-"end;"], "", %w"foo")
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Signal.trap(:#{sig}) { STDOUT.syswrite("foo") }
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Process.kill :#{sig}, $$
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end;
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end if Process.respond_to?(:kill)
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def test_trap_system_default
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assert_separately([], <<-End)
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trap(:QUIT, "SYSTEM_DEFAULT")
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assert_equal("SYSTEM_DEFAULT", trap(:QUIT, "DEFAULT"))
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End
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end if Signal.list.key?('QUIT')
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def test_reserved_signal
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assert_raise(ArgumentError) {
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Signal.trap(:SEGV) {}
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}
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assert_raise(ArgumentError) {
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Signal.trap(:BUS) {}
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}
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assert_raise(ArgumentError) {
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Signal.trap(:ILL) {}
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}
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assert_raise(ArgumentError) {
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Signal.trap(:FPE) {}
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}
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assert_raise(ArgumentError) {
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Signal.trap(:VTALRM) {}
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}
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end
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def test_signame
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Signal.list.each do |name, num|
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assert_equal(num, Signal.list[Signal.signame(num)], name)
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end
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assert_nil(Signal.signame(-1))
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signums = Signal.list.invert
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assert_nil(Signal.signame((1..1000).find {|num| !signums[num]}))
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end
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def test_signame_delivered
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args = [EnvUtil.rubybin, "--disable=gems", "-e", <<"", :err => File::NULL]
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Signal.trap("INT") do |signo|
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signame = Signal.signame(signo)
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Marshal.dump(signame, STDOUT)
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STDOUT.flush
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exit 0
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end
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Process.kill("INT", $$)
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sleep 1 # wait signal deliver
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10.times do
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IO.popen(args) do |child|
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signame = Marshal.load(child)
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assert_equal("INT", signame)
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end
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end
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end if Process.respond_to?(:kill)
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def test_trap_puts
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assert_in_out_err([], <<-INPUT, ["a"*10000], [])
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Signal.trap(:INT) {
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# for enable internal io mutex
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STDOUT.sync = false
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# larger than internal io buffer
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print "a"*10000
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}
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Process.kill :INT, $$
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sleep 0.1
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INPUT
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end if Process.respond_to?(:kill)
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def test_hup_me
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# [Bug #7951] [ruby-core:52864]
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# This is MRI specific spec. ruby has no guarantee
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# that signal will be deliverd synchronously.
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# This ugly workaround was introduced to don't break
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# compatibility against silly example codes.
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assert_separately([], <<-RUBY)
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trap(:HUP, "DEFAULT")
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assert_raise(SignalException) {
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Process.kill('HUP', Process.pid)
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}
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RUBY
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bug8137 = '[ruby-dev:47182] [Bug #8137]'
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assert_nothing_raised(bug8137) {
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Timeout.timeout(1) {
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Process.kill(0, Process.pid)
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}
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}
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end if Process.respond_to?(:kill) and Signal.list.key?('HUP')
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def test_ignored_interrupt
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bug9820 = '[ruby-dev:48203] [Bug #9820]'
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assert_separately(['-', bug9820], <<-'end;') # begin
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bug = ARGV.shift
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trap(:INT, "IGNORE")
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assert_nothing_raised(SignalException, bug) do
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Process.kill(:INT, $$)
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end
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end;
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if trap = Signal.list['TRAP']
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bug9820 = '[ruby-dev:48592] [Bug #9820]'
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status = assert_in_out_err(['-e', 'Process.kill(:TRAP, $$)'])
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assert_predicate(status, :signaled?, bug9820)
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assert_equal(trap, status.termsig, bug9820)
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end
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if Signal.list['CONT']
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bug9820 = '[ruby-dev:48606] [Bug #9820]'
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assert_ruby_status(['-e', 'Process.kill(:CONT, $$)'])
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end
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end if Process.respond_to?(:kill)
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def test_signal_list_dedupe_keys
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a = Signal.list.keys.map(&:object_id).sort
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b = Signal.list.keys.map(&:object_id).sort
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assert_equal a, b
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end
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def test_self_stop
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assert_ruby_status([], <<-'end;')
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begin
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fork{
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sleep 1
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Process.kill(:CONT, Process.ppid)
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}
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Process.kill(:STOP, Process.pid)
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rescue NotImplementedError
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# ok
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end
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end;
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end
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def test_sigchld_ignore
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omit 'no SIGCHLD' unless Signal.list['CHLD']
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old = trap(:CHLD, 'IGNORE')
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cmd = [ EnvUtil.rubybin, '--disable=gems', '-e' ]
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assert(system(*cmd, 'exit!(0)'), 'no ECHILD')
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IO.pipe do |r, w|
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pid = spawn(*cmd, "STDIN.read", in: r)
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nb = Process.wait(pid, Process::WNOHANG)
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th = Thread.new(Thread.current) do |parent|
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Thread.pass until parent.stop? # wait for parent to Process.wait
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w.close
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end
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assert_raise(Errno::ECHILD) { Process.wait(pid) }
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th.join
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assert_nil nb
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end
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IO.pipe do |r, w|
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pids = 3.times.map { spawn(*cmd, 'exit!', out: w) }
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w.close
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zombies = pids.dup
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assert_nil r.read(1), 'children dead'
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Timeout.timeout(10) do
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zombies.delete_if do |pid|
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begin
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Process.kill(0, pid)
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false
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rescue Errno::ESRCH
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true
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end
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end while zombies[0]
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end
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assert_predicate zombies, :empty?, 'zombies leftover'
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pids.each do |pid|
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assert_raise(Errno::ECHILD) { Process.waitpid(pid) }
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end
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end
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ensure
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trap(:CHLD, old) if Signal.list['CHLD']
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end
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def test_sigwait_fd_unused
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t = EnvUtil.apply_timeout_scale(0.1)
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assert_separately([], <<-End)
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tgt = $$
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trap(:TERM) { exit(0) }
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e = "Process.daemon; sleep #{t * 2}; Process.kill(:TERM,\#{tgt})"
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term = [ '#{EnvUtil.rubybin}', '--disable=gems', '-e', e ]
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t2 = Thread.new { sleep } # grab sigwait_fd
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Thread.pass until t2.stop?
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Thread.new do
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sleep #{t}
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t2.kill
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t2.join
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end
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Process.spawn(*term)
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# last thread remaining, ensure it can react to SIGTERM
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loop { sleep }
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End
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end if Process.respond_to?(:kill) && Process.respond_to?(:daemon)
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end
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