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# frozen_string_literal: false
require 'test/unit'
require 'thread'
class TestThreadGroup < Test::Unit::TestCase
def test_thread_init
thgrp = ThreadGroup.new
th = Thread.new{
thgrp.add(Thread.current)
Thread.new{sleep 1}
}.value
assert_equal(thgrp, th.group)
ensure
th.join
end
def test_frozen_thgroup
thgrp = ThreadGroup.new
t = Thread.new{1}
Thread.new{
thgrp.add(Thread.current)
thgrp.freeze
assert_raise(ThreadError) do
Thread.new{1}.join
end
assert_raise(ThreadError) do
thgrp.add(t)
end
assert_raise(ThreadError) do
ThreadGroup.new.add Thread.current
end
}.join
t.join
end
def test_enclosed_thgroup
thgrp = ThreadGroup.new
assert_equal(false, thgrp.enclosed?)
t = Thread.new{1}
Thread.new{
thgrp.add(Thread.current)
thgrp.enclose
assert_equal(true, thgrp.enclosed?)
assert_nothing_raised do
Thread.new{1}.join
end
assert_raise(ThreadError) do
thgrp.add t
end
assert_raise(ThreadError) do
ThreadGroup.new.add Thread.current
end
}.join
t.join
end
end
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