145 lines
2.7 KiB
Ruby
145 lines
2.7 KiB
Ruby
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require "monitor"
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require "thread"
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require "test/unit"
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class TestMonitor < Test::Unit::TestCase
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def setup
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@monitor = Monitor.new
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end
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def test_enter
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ary = []
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th = Thread.start {
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Thread.pass
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@monitor.enter
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for i in 6 .. 10
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ary.push(i)
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Thread.pass
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end
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@monitor.exit
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}
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@monitor.enter
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for i in 1 .. 5
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ary.push(i)
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Thread.pass
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end
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@monitor.exit
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th.join
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assert_equal((1..10).to_a, ary)
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end
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def test_synchronize
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ary = []
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th = Thread.start {
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Thread.pass
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@monitor.synchronize do
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for i in 6 .. 10
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ary.push(i)
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Thread.pass
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end
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end
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}
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@monitor.synchronize do
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for i in 1 .. 5
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ary.push(i)
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Thread.pass
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end
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end
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th.join
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assert_equal((1..10).to_a, ary)
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end
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def test_try_enter
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queue = Queue.new
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th = Thread.start {
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queue.deq
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@monitor.enter
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queue.deq
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@monitor.exit
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}
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assert_equal(true, @monitor.try_enter)
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@monitor.exit
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queue.enq(Object.new)
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assert_equal(false, @monitor.try_enter)
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queue.enq(Object.new)
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assert_equal(true, @monitor.try_enter)
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end
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def test_cond
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cond = @monitor.new_cond
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a = "foo"
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Thread.start do
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Thread.pass
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@monitor.synchronize do
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a = "bar"
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cond.signal
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end
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end
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@monitor.synchronize do
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assert_equal("foo", a)
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result1 = cond.wait
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assert_equal(true, result1)
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assert_equal("bar", a)
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end
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b = "foo"
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Thread.start do
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Thread.pass
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@monitor.synchronize do
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b = "bar"
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cond.signal
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end
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end
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@monitor.synchronize do
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assert_equal("foo", b)
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result2 = cond.wait(0.1)
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assert_equal(true, result2)
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assert_equal("bar", b)
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end
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c = "foo"
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Thread.start do
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sleep(0.2)
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@monitor.synchronize do
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c = "bar"
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cond.signal
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end
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end
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@monitor.synchronize do
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assert_equal("foo", c)
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result3 = cond.wait(0.1)
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assert_equal(false, result3)
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assert_equal("foo", c)
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result4 = cond.wait
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assert_equal(true, result4)
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assert_equal("bar", c)
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end
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d = "foo"
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cumber_thread = Thread.start {
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loop do
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@monitor.synchronize do
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d = "foo"
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end
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end
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}
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Thread.start do
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Thread.pass
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@monitor.synchronize do
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d = "bar"
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cond.signal
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end
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end
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@monitor.synchronize do
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assert_equal("foo", d)
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result5 = cond.wait
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assert_equal(true, result5)
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# this thread has priority over cumber_thread
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assert_equal("bar", d)
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end
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cumber_thread.kill
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end
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end
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