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|
require 'test/unit'
require 'thread'
require_relative 'envutil'
class TestThread < Test::Unit::TestCase
class Thread < ::Thread
Threads = []
def self.new(*)
th = super
th.abort_on_exception = true
Threads << th
th
end
end
def setup
Thread::Threads.clear
end
def teardown
Thread::Threads.each do |t|
t.kill if t.alive?
begin
t.join
rescue Exception
end
end
end
def test_main_thread_variable_in_enumerator
assert_equal Thread.main, Thread.current
Thread.current.thread_variable_set :foo, "bar"
thread, value = Fiber.new {
Fiber.yield [Thread.current, Thread.current.thread_variable_get(:foo)]
}.resume
assert_equal Thread.current, thread
assert_equal Thread.current.thread_variable_get(:foo), value
end
def test_thread_variable_in_enumerator
Thread.new {
Thread.current.thread_variable_set :foo, "bar"
thread, value = Fiber.new {
Fiber.yield [Thread.current, Thread.current.thread_variable_get(:foo)]
}.resume
assert_equal Thread.current, thread
assert_equal Thread.current.thread_variable_get(:foo), value
}.join
end
def test_thread_variables
assert_equal [], Thread.new { Thread.current.thread_variables }.join.value
t = Thread.new {
Thread.current.thread_variable_set(:foo, "bar")
Thread.current.thread_variables
}
assert_equal [:foo], t.join.value
end
def test_thread_variable?
refute Thread.new { Thread.current.thread_variable?("foo") }.join.value
t = Thread.new {
Thread.current.thread_variable_set("foo", "bar")
}.join
assert t.thread_variable?("foo")
assert t.thread_variable?(:foo)
refute t.thread_variable?(:bar)
end
def test_thread_variable_strings_and_symbols_are_the_same_key
t = Thread.new {}.join
t.thread_variable_set("foo", "bar")
assert_equal "bar", t.thread_variable_get(:foo)
end
def test_thread_variable_frozen
t = Thread.new { }.join
t.freeze
assert_raises(RuntimeError) do
t.thread_variable_set(:foo, "bar")
end
end
def test_thread_variable_security
t = Thread.new { sleep }
assert_raises(SecurityError) do
Thread.new { $SAFE = 4; t.thread_variable_get(:foo) }.join
end
assert_raises(SecurityError) do
Thread.new { $SAFE = 4; t.thread_variable_set(:foo, :baz) }.join
end
end
def test_mutex_synchronize
m = Mutex.new
r = 0
max = 10
(1..max).map{
Thread.new{
i=0
while i<max*max
i+=1
m.synchronize{
r += 1
}
end
}
}.each{|e|
e.join
}
assert_equal(max * max * max, r)
end
def test_condvar
mutex = Mutex.new
condvar = ConditionVariable.new
result = []
mutex.synchronize do
t = Thread.new do
mutex.synchronize do
result << 1
condvar.signal
end
end
result << 0
condvar.wait(mutex)
result << 2
t.join
end
assert_equal([0, 1, 2], result)
end
def test_condvar_wait_exception_handling
# Calling wait in the only thread running should raise a ThreadError of
# 'stopping only thread'
mutex = Mutex.new
condvar = ConditionVariable.new
locked = false
thread = Thread.new do
Thread.current.abort_on_exception = false
mutex.synchronize do
begin
condvar.wait(mutex)
rescue Exception
locked = mutex.locked?
raise
end
end
end
until thread.stop?
sleep(0.1)
end
thread.raise Interrupt, "interrupt a dead condition variable"
assert_raise(Interrupt) { thread.value }
assert(locked)
end
def test_condvar_wait_and_broadcast
nr_threads = 3
threads = Array.new
mutex = Mutex.new
condvar = ConditionVariable.new
result = []
nr_threads.times do |i|
threads[i] = Thread.new do
mutex.synchronize do
result << "C1"
condvar.wait mutex
result << "C2"
end
end
end
sleep 0.1
mutex.synchronize do
result << "P1"
condvar.broadcast
result << "P2"
end
nr_threads.times do |i|
threads[i].join
end
assert_equal ["C1", "C1", "C1", "P1", "P2", "C2", "C2", "C2"], result
end
# Hmm.. don't we have a way of catch fatal exception?
#
# def test_cv_wait_deadlock
# mutex = Mutex.new
# cv = ConditionVariable.new
#
# assert_raise(fatal) {
# mutex.lock
# cv.wait mutex
# mutex.unlock
# }
# end
def test_condvar_wait_deadlock_2
nr_threads = 3
threads = Array.new
mutex = Mutex.new
condvar = ConditionVariable.new
nr_threads.times do |i|
if (i != 0)
mutex.unlock
end
threads[i] = Thread.new do
mutex.synchronize do
condvar.wait mutex
end
end
mutex.lock
end
assert_raise(Timeout::Error) do
Timeout.timeout(0.1) { condvar.wait mutex }
end
mutex.unlock
threads.each(&:kill)
threads.each(&:join)
end
def test_condvar_timed_wait
mutex = Mutex.new
condvar = ConditionVariable.new
timeout = 0.3
locked = false
t0 = Time.now
mutex.synchronize do
begin
condvar.wait(mutex, timeout)
ensure
locked = mutex.locked?
end
end
t1 = Time.now
t = t1-t0
assert_operator(timeout*0.9, :<, t)
assert(locked)
end
def test_condvar_nolock
mutex = Mutex.new
condvar = ConditionVariable.new
assert_raise(ThreadError) {condvar.wait(mutex)}
end
def test_condvar_nolock_2
mutex = Mutex.new
condvar = ConditionVariable.new
Thread.new do
assert_raise(ThreadError) {condvar.wait(mutex)}
end.join
end
def test_condvar_nolock_3
mutex = Mutex.new
condvar = ConditionVariable.new
Thread.new do
assert_raise(ThreadError) {condvar.wait(mutex, 0.1)}
end.join
end
def test_local_barrier
dir = File.dirname(__FILE__)
lbtest = File.join(dir, "lbtest.rb")
$:.unshift File.join(File.dirname(dir), 'ruby')
require 'envutil'
$:.shift
3.times {
`#{EnvUtil.rubybin} #{lbtest}`
assert(!$?.coredump?, '[ruby-dev:30653]')
}
end
def test_priority
c1 = c2 = 0
t1 = Thread.new { loop { c1 += 1 } }
t1.priority = 3
t2 = Thread.new { loop { c2 += 1 } }
t2.priority = -3
assert_equal(3, t1.priority)
assert_equal(-3, t2.priority)
sleep 0.5
5.times do
break if c1 > c2
sleep 0.1
end
t1.kill
t2.kill
assert_operator(c1, :>, c2, "[ruby-dev:33124]") # not guaranteed
end
def test_new
assert_raise(ThreadError) do
Thread.new
end
t1 = Thread.new { sleep }
assert_raise(ThreadError) do
t1.instance_eval { initialize { } }
end
t2 = Thread.new(&method(:sleep).to_proc)
assert_raise(ThreadError) do
t2.instance_eval { initialize { } }
end
ensure
t1.kill if t1
t2.kill if t2
end
def test_join
t = Thread.new { sleep }
assert_nil(t.join(0.5))
ensure
t.kill if t
end
def test_join2
t1 = Thread.new { sleep(1.5) }
t2 = Thread.new do
t1.join(1)
end
t3 = Thread.new do
sleep 0.5
t1.join
end
assert_nil(t2.value)
assert_equal(t1, t3.value)
ensure
t1.kill if t1
t2.kill if t2
t3.kill if t3
end
def test_kill_main_thread
assert_in_out_err([], <<-INPUT, %w(1), [])
p 1
Thread.kill Thread.current
p 2
INPUT
end
def test_kill_wrong_argument
bug4367 = '[ruby-core:35086]'
assert_raise(TypeError, bug4367) {
Thread.kill(nil)
}
o = Object.new
assert_raise(TypeError, bug4367) {
Thread.kill(o)
}
end
def test_kill_thread_subclass
c = Class.new(Thread)
t = c.new { sleep 10 }
assert_nothing_raised { Thread.kill(t) }
assert_equal(nil, t.value)
end
def test_exit
s = 0
Thread.new do
s += 1
Thread.exit
s += 2
end.join
assert_equal(1, s)
end
def test_wakeup
s = 0
t = Thread.new do
s += 1
Thread.stop
s += 1
end
sleep 0.5
assert_equal(1, s)
t.wakeup
sleep 0.5
assert_equal(2, s)
assert_raise(ThreadError) { t.wakeup }
ensure
t.kill if t
end
def test_stop
assert_in_out_err([], <<-INPUT, %w(2), [])
begin
Thread.stop
p 1
rescue ThreadError
p 2
end
INPUT
end
def test_list
assert_in_out_err([], <<-INPUT) do |r, e|
t1 = Thread.new { sleep }
Thread.pass
t2 = Thread.new { loop { } }
Thread.new { }.join
p [Thread.current, t1, t2].map{|t| t.object_id }.sort
p Thread.list.map{|t| t.object_id }.sort
INPUT
assert_equal(r.first, r.last)
assert_equal([], e)
end
end
def test_main
assert_in_out_err([], <<-INPUT, %w(true false), [])
p Thread.main == Thread.current
Thread.new { p Thread.main == Thread.current }.join
INPUT
end
def test_abort_on_exception
assert_in_out_err([], <<-INPUT, %w(false 1), [])
p Thread.abort_on_exception
begin
Thread.new { raise }
sleep 0.5
p 1
rescue
p 2
end
INPUT
assert_in_out_err([], <<-INPUT, %w(true 2), [])
Thread.abort_on_exception = true
p Thread.abort_on_exception
begin
Thread.new { raise }
sleep 0.5
p 1
rescue
p 2
end
INPUT
assert_in_out_err(%w(--disable-gems -d), <<-INPUT, %w(false 2), %r".+")
p Thread.abort_on_exception
begin
Thread.new { raise }
sleep 0.5
p 1
rescue
p 2
end
INPUT
assert_in_out_err([], <<-INPUT, %w(false true 2), [])
p Thread.abort_on_exception
begin
t = Thread.new { sleep 0.5; raise }
t.abort_on_exception = true
p t.abort_on_exception
sleep 1
p 1
rescue
p 2
end
INPUT
end
def test_status_and_stop_p
a = ::Thread.new { raise("die now") }
b = Thread.new { Thread.stop }
c = Thread.new { Thread.exit }
d = Thread.new { sleep }
e = Thread.current
sleep 0.5
assert_equal(nil, a.status)
assert(a.stop?)
assert_equal("sleep", b.status)
assert(b.stop?)
assert_equal(false, c.status)
assert_match(/^#<TestThread::Thread:.* dead>$/, c.inspect)
assert(c.stop?)
d.kill
# to avoid thread switching...
ds1 = d.status
ds2 = d.stop?
es1 = e.status
es2 = e.stop?
assert_equal(["aborting", false], [ds1, ds2])
assert_equal(["run", false], [es1, es2])
ensure
a.kill if a
b.kill if b
c.kill if c
d.kill if d
end
def test_safe_level
t = Thread.new { $SAFE = 3; sleep }
sleep 0.5
assert_equal(0, Thread.current.safe_level)
assert_equal(3, t.safe_level)
ensure
t.kill if t
end
def test_thread_local
t = Thread.new { sleep }
assert_equal(false, t.key?(:foo))
t["foo"] = "foo"
t["bar"] = "bar"
t["baz"] = "baz"
assert_equal(true, t.key?(:foo))
assert_equal(true, t.key?("foo"))
assert_equal(false, t.key?(:qux))
assert_equal(false, t.key?("qux"))
assert_equal([:foo, :bar, :baz], t.keys)
ensure
t.kill if t
end
def test_thread_local_security
t = Thread.new { sleep }
assert_raise(SecurityError) do
Thread.new { $SAFE = 4; t[:foo] }.join
end
assert_raise(SecurityError) do
Thread.new { $SAFE = 4; t[:foo] = :baz }.join
end
assert_raise(RuntimeError) do
Thread.new do
Thread.current[:foo] = :bar
Thread.current.freeze
Thread.current[:foo] = :baz
end.join
end
end
def test_select_wait
assert_nil(IO.select(nil, nil, nil, 1))
t = Thread.new do
IO.select(nil, nil, nil, nil)
end
sleep 0.5
t.kill
end
def test_mutex_deadlock
m = Mutex.new
m.synchronize do
assert_raise(ThreadError) do
m.synchronize do
assert(false)
end
end
end
end
def test_mutex_interrupt
m = Mutex.new
m.lock
t = Thread.new do
m.lock
:foo
end
sleep 0.5
t.kill
assert_nil(t.value)
end
def test_mutex_illegal_unlock
m = Mutex.new
m.lock
assert_raise(ThreadError) do
Thread.new do
m.unlock
end.join
end
end
def test_mutex_fifo_like_lock
m1 = Mutex.new
m2 = Mutex.new
m1.lock
m2.lock
m1.unlock
m2.unlock
assert_equal(false, m1.locked?)
assert_equal(false, m2.locked?)
m3 = Mutex.new
m1.lock
m2.lock
m3.lock
m1.unlock
m2.unlock
m3.unlock
assert_equal(false, m1.locked?)
assert_equal(false, m2.locked?)
assert_equal(false, m3.locked?)
end
def test_mutex_trylock
m = Mutex.new
assert_equal(true, m.try_lock)
assert_equal(false, m.try_lock, '[ruby-core:20943]')
Thread.new{
assert_equal(false, m.try_lock)
}.join
m.unlock
end
def test_recursive_outer
arr = []
obj = Struct.new(:foo, :visited).new(arr, false)
arr << obj
def obj.hash
self[:visited] = true
super
raise "recursive_outer should short circuit intermediate calls"
end
assert_nothing_raised {arr.hash}
assert(obj[:visited])
end
def test_thread_instance_variable
bug4389 = '[ruby-core:35192]'
assert_in_out_err([], <<-INPUT, %w(), [], bug4389)
class << Thread.current
@data = :data
end
INPUT
end
def test_no_valid_cfp
skip 'with win32ole, cannot run this testcase because win32ole redefines Thread#intialize' if defined?(WIN32OLE)
bug5083 = '[ruby-dev:44208]'
assert_equal([], Thread.new(&Module.method(:nesting)).value)
error = assert_raise(RuntimeError) do
Thread.new(:to_s, &Module.method(:undef_method)).join
end
assert_equal("Can't call on top of Fiber or Thread", error.message, bug5083)
end
def make_control_interrupt_test_thread1 flag
r = []
ready_p = false
th = Thread.new{
begin
Thread.control_interrupt(RuntimeError => flag){
begin
ready_p = true
sleep 0.5
rescue
r << :c1
end
}
rescue
r << :c2
end
}
Thread.pass until ready_p
th.raise
begin
th.join
rescue
r << :c3
end
r
end
def test_control_interrupt
[[:never, :c2],
[:immediate, :c1],
[:on_blocking, :c1]].each{|(flag, c)|
assert_equal([flag, c], [flag] + make_control_interrupt_test_thread1(flag))
}
# TODO: complex cases are needed.
end
def test_check_interrupt
q = Queue.new
Thread.control_interrupt(RuntimeError => :never){
th = Thread.new{
q.push :e
begin
begin
sleep 0.5
rescue => e
q.push :ng1
end
begin
Thread.check_interrupt
rescue => e
q.push :ok
end
rescue => e
q.push :ng2
ensure
q.push :ng3
end
}
q.pop
th.raise
th.join
assert_equal(:ok, q.pop)
}
end
def test_thread_timer_and_ensure
assert_normal_exit(<<_eom, 'r36492', timeout: 3)
flag = false
t = Thread.new do
begin
sleep
ensure
1 until flag
end
end
Thread.pass until t.status == "sleep"
t.kill
t.alive? == true
flag = true
t.join
_eom
end
end
class TestThreadGroup < Test::Unit::TestCase
def test_thread_init
thgrp = ThreadGroup.new
Thread.new{
thgrp.add(Thread.current)
assert_equal(thgrp, Thread.new{sleep 1}.group)
}.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
def test_uninitialized
c = Class.new(Thread)
c.class_eval { def initialize; end }
assert_raise(ThreadError) { c.new.start }
end
def test_backtrace
Thread.new{
assert_equal(Array, Thread.main.backtrace.class)
}.join
t = Thread.new{}
t.join
assert_equal(nil, t.backtrace)
end
def test_thread_timer_and_interrupt
bug5757 = '[ruby-dev:44985]'
t0 = Time.now.to_f
pid = nil
cmd = 'r,=IO.pipe; Thread.start {Thread.pass until Thread.main.stop?; puts; STDOUT.flush}; r.read'
opt = {}
opt[:new_pgroup] = true if /mswin|mingw/ =~ RUBY_PLATFORM
s, _err = EnvUtil.invoke_ruby(['-e', cmd], "", true, true, opt) do |in_p, out_p, err_p, cpid|
out_p.gets
pid = cpid
Process.kill(:SIGINT, pid)
Process.wait(pid)
[$?, err_p.read]
end
t1 = Time.now.to_f
assert_equal(pid, s.pid, bug5757)
unless /mswin|mingw/ =~ RUBY_PLATFORM
# status of signal is not supported on Windows
assert_equal([false, true, false, Signal.list["INT"]],
[s.exited?, s.signaled?, s.stopped?, s.termsig],
"[s.exited?, s.signaled?, s.stopped?, s.termsig]")
end
assert_in_delta(t1 - t0, 1, 1, bug5757)
end
def test_thread_join_in_trap
assert_raise(ThreadError) {
t = Thread.new{ sleep 0.2; Process.kill(:INT, $$) }
Signal.trap :INT do
t.join
end
t.join
}
end
def test_thread_join_current
assert_raises(ThreadError) do
Thread.current.join
end
end
end
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