1
0
Fork 0
mirror of https://github.com/rails/rails.git synced 2022-11-09 12:12:34 -05:00
rails--rails/activesupport/test/fork_tracker_test.rb

211 lines
4 KiB
Ruby
Raw Normal View History

# frozen_string_literal: true
require_relative "abstract_unit"
class ForkTrackerTest < ActiveSupport::TestCase
def test_object_fork
read, write = IO.pipe
called = false
handler = ActiveSupport::ForkTracker.after_fork do
called = true
write.write "forked"
end
2019-09-30 17:01:50 -04:00
assert_not respond_to?(:fork)
pid = fork do
read.close
write.close
exit!
end
write.close
Process.waitpid(pid)
assert_equal "forked", read.read
read.close
assert_not called
ensure
ActiveSupport::ForkTracker.unregister(handler)
end
def test_object_fork_without_block
read, write = IO.pipe
called = false
handler = ActiveSupport::ForkTracker.after_fork do
called = true
write.write "forked"
end
if pid = fork
write.close
Process.waitpid(pid)
assert_equal "forked", read.read
read.close
assert_not called
else
read.close
write.close
exit!
end
ensure
ActiveSupport::ForkTracker.unregister(handler)
end
def test_process_fork
read, write = IO.pipe
called = false
handler = ActiveSupport::ForkTracker.after_fork do
called = true
write.write "forked"
end
pid = Process.fork do
read.close
write.close
exit!
end
write.close
Process.waitpid(pid)
assert_equal "forked", read.read
read.close
assert_not called
ensure
ActiveSupport::ForkTracker.unregister(handler)
end
def test_process_fork_without_block
read, write = IO.pipe
called = false
handler = ActiveSupport::ForkTracker.after_fork do
called = true
write.write "forked"
end
if pid = Process.fork
write.close
Process.waitpid(pid)
assert_equal "forked", read.read
read.close
assert_not called
else
read.close
write.close
exit!
end
ensure
ActiveSupport::ForkTracker.unregister(handler)
end
def test_kernel_fork
read, write = IO.pipe
called = false
handler = ActiveSupport::ForkTracker.after_fork do
called = true
write.write "forked"
end
pid = Kernel.fork do
read.close
write.close
exit!
end
write.close
Process.waitpid(pid)
assert_equal "forked", read.read
read.close
assert_not called
ensure
ActiveSupport::ForkTracker.unregister(handler)
end
def test_kernel_fork_without_block
read, write = IO.pipe
called = false
handler = ActiveSupport::ForkTracker.after_fork do
called = true
write.write "forked"
end
if pid = Kernel.fork
write.close
Process.waitpid(pid)
assert_equal "forked", read.read
read.close
assert_not called
else
read.close
write.close
exit!
end
ensure
ActiveSupport::ForkTracker.unregister(handler)
end
def test_check
count = 0
handler = ActiveSupport::ForkTracker.after_fork { count += 1 }
assert_no_difference -> { count } do
3.times { ActiveSupport::ForkTracker.check! }
end
Process.stub(:pid, Process.pid + 1) do
assert_difference -> { count }, +1 do
3.times { ActiveSupport::ForkTracker.check! }
end
end
assert_difference -> { count }, +1 do
3.times { ActiveSupport::ForkTracker.check! }
end
ensure
ActiveSupport::ForkTracker.unregister(handler)
end
2019-09-30 17:03:53 -04:00
def test_basic_object_with_kernel_fork
read, write = IO.pipe
called = false
handler = ActiveSupport::ForkTracker.after_fork do
called = true
write.write "forked"
end
klass = Class.new(BasicObject) do
include ::Kernel
def fark(&block)
fork(&block)
end
end
object = klass.new
assert_not object.respond_to?(:fork)
pid = object.fark do
read.close
write.close
exit!
end
write.close
Process.waitpid(pid)
assert_equal "forked", read.read
read.close
assert_not called
ensure
ActiveSupport::ForkTracker.unregister(handler)
end
end if Process.respond_to?(:fork)