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# frozen_string_literal: true
require 'test/unit'
require_relative 'scheduler'
class TestSchedulerMutex < Test::Unit::TestCase
def test_mutex_synchronize
mutex = Mutex.new
thread = Thread.new do
scheduler = Scheduler.new
Thread.current.scheduler = scheduler
Fiber do
assert_equal Thread.scheduler, scheduler
mutex.synchronize do
assert_nil Thread.scheduler
end
end
end
thread.join
end
def test_mutex_deadlock
mutex = Mutex.new
thread = Thread.new do
scheduler = Scheduler.new
Thread.current.scheduler = scheduler
Fiber do
assert_equal Thread.scheduler, scheduler
mutex.synchronize do
Fiber.yield
end
end
assert_raise ThreadError do
mutex.lock
end
end
thread.join
end
end
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