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|
{% skip_file if flag?(:win32) || flag?(:wasm32) %}
require "spec"
require "signal"
describe "Signal" do
typeof(Signal::PIPE.reset)
typeof(Signal::PIPE.ignore)
typeof(Signal::PIPE.trap { 1 })
it "runs a signal handler" do
ran = false
Signal::USR1.trap do
ran = true
end
Process.signal Signal::USR1, Process.pid
10.times do |i|
break if ran
sleep 0.1
end
ran.should be_true
end
it "ignores a signal" do
Signal::USR2.ignore
Process.signal Signal::USR2, Process.pid
end
it "CHLD.reset sets default Crystal child handler" do
Signal::CHLD.reset
child = Process.new("true", shell: true)
child.wait # doesn't block forever
end
it "CHLD.ignore sets default Crystal child handler" do
Signal::CHLD.ignore
child = Process.new("true", shell: true)
child.wait # doesn't block forever
end
it "CHLD.trap is called after default Crystal child handler" do
chan = Channel(Process).new
Signal::CHLD.trap do
child_process = chan.receive
Process.exists?(child_process.pid).should be_false
end
child = Process.new("true", shell: true)
child.wait # doesn't block forever
chan.send(child)
ensure
Signal::CHLD.reset
end
it "CHLD.reset removes previously set trap" do
call_count = 0
Signal::CHLD.trap do
call_count += 1
end
Process.new("true", shell: true).wait
Fiber.yield
call_count.should eq(1)
Signal::CHLD.reset
Process.new("true", shell: true).wait
Fiber.yield
call_count.should eq(1)
end
# TODO: test Signal::X.reset
end
|
