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# frozen_string_literal: false
require 'test/unit'
require 'thread'
require 'mutex_m'
class TestMutexM < Test::Unit::TestCase
def test_cv_wait
o = Object.new
o.instance_variable_set(:@foo, nil)
o.extend(Mutex_m)
c = ConditionVariable.new
t = Thread.start {
o.synchronize do
until foo = o.instance_variable_get(:@foo)
c.wait(o)
end
foo
end
}
sleep(0.0001)
o.synchronize do
o.instance_variable_set(:@foo, "abc")
end
c.signal
assert_equal "abc", t.value
end
end
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