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|
# frozen_string_literal: true
require 'test/unit'
require_relative 'scheduler'
class TestFiberIO < Test::Unit::TestCase
MESSAGE = "Hello World"
def test_read
omit unless defined?(UNIXSocket)
i, o = UNIXSocket.pair
if RUBY_PLATFORM=~/mswin|mingw/
i.nonblock = true
o.nonblock = true
end
message = nil
thread = Thread.new do
scheduler = Scheduler.new
Fiber.set_scheduler scheduler
Fiber.schedule do
message = i.read(20)
i.close
end
Fiber.schedule do
o.write("Hello World")
o.close
end
end
thread.join
assert_equal MESSAGE, message
assert_predicate(i, :closed?)
assert_predicate(o, :closed?)
end
def test_heavy_read
omit unless defined?(UNIXSocket)
16.times.map do
Thread.new do
i, o = UNIXSocket.pair
if RUBY_PLATFORM=~/mswin|mingw/
i.nonblock = true
o.nonblock = true
end
scheduler = Scheduler.new
Fiber.set_scheduler scheduler
Fiber.schedule do
i.read(20)
i.close
end
Fiber.schedule do
o.write("Hello World")
o.close
end
end
end.each(&:join)
end
def test_epipe_on_read
omit unless defined?(UNIXSocket)
omit "nonblock=true isn't properly supported on Windows" if RUBY_PLATFORM=~/mswin|mingw/
i, o = UNIXSocket.pair
error = nil
thread = Thread.new do
scheduler = Scheduler.new
Fiber.set_scheduler scheduler
Fiber.schedule do
begin
i.close
o.write(MESSAGE)
rescue => error
# Saved into error.
end
end
end
thread.join
i.close
o.close
assert_kind_of Errno::EPIPE, error
end
def test_tcp_accept
server = TCPServer.new('localhost', 0)
th = Thread.new do
Fiber.set_scheduler(Scheduler.new)
Fiber.schedule do
sender = server.accept
sender.wait_writable
sender.write "hello"
sender.close
end
end
recver = TCPSocket.new('localhost', server.local_address.ip_port)
assert "hello", recver.read
recver.close
server.close
th.join
end
def test_tcp_connect
server = TCPServer.new('localhost', 0)
th = Thread.new do
Fiber.set_scheduler(Scheduler.new)
Fiber.schedule do
sender = TCPSocket.new('localhost', server.local_address.ip_port)
sender.write "hello"
sender.close
end
end
recver = server.accept
assert "hello", recver.read
recver.close
server.close
th.join
end
def test_read_write_blocking
omit "UNIXSocket is not defined!" unless defined?(UNIXSocket)
i, o = UNIXSocket.pair
i.nonblock = false
o.nonblock = false
message = nil
thread = Thread.new do
# This scheduler provides non-blocking `io_read`/`io_write`:
scheduler = IOBufferScheduler.new
Fiber.set_scheduler scheduler
Fiber.schedule do
# We add 1 here, to force the read to block (testing that specific code path).
message = i.read(MESSAGE.bytesize + 1)
i.close
end
Fiber.schedule do
o.write(MESSAGE)
o.close
end
end
thread.join
assert_equal MESSAGE, message
assert_predicate(i, :closed?)
assert_predicate(o, :closed?)
end
def test_puts_empty
omit "UNIXSocket is not defined!" unless defined?(UNIXSocket)
i, o = UNIXSocket.pair
i.nonblock = false
o.nonblock = false
thread = Thread.new do
# This scheduler provides non-blocking `io_read`/`io_write`:
scheduler = IOBufferScheduler.new
Fiber.set_scheduler scheduler
Fiber.schedule do
# This was causing a segfault on older Ruby.
o.puts ""
o.puts nil
o.close
end
end
thread.join
message = i.read
i.close
assert_equal $/*2, message
end
def test_io_select
omit "UNIXSocket is not defined!" unless defined?(UNIXSocket)
UNIXSocket.pair do |r, w|
result = nil
thread = Thread.new do
scheduler = Scheduler.new
Fiber.set_scheduler scheduler
Fiber.schedule do
w.write("Hello World")
result = IO.select([r], [w])
end
end
thread.join
assert_equal [[r], [w], []], result
end
end
def test_backquote
result = nil
thread = Thread.new do
scheduler = Scheduler.new
Fiber.set_scheduler scheduler
Fiber.schedule do
result = `#{EnvUtil.rubybin} -e "sleep 0.1;puts %[ok]"`
end
end
thread.join
assert_equal "ok\n", result
end
# Tests for https://bugs.ruby-lang.org/issues/20723 which would
# otherwise deadlock this test.
def test_close_while_reading_on_thread
# Windows has UNIXSocket, but only with VS 2019+
omit "UNIXSocket is not defined!" unless defined?(UNIXSocket)
i, o = Socket.pair(:UNIX, :STREAM)
if RUBY_PLATFORM=~/mswin|mingw/
i.nonblock = true
o.nonblock = true
end
reading_thread = Thread.new do
Thread.current.report_on_exception = false
i.wait_readable
end
fs_thread = Thread.new do
# Wait until the reading thread is blocked on read:
Thread.pass until reading_thread.status == "sleep"
scheduler = Scheduler.new
Fiber.set_scheduler scheduler
Fiber.schedule do
i.close
end
end
assert_raise(IOError) { reading_thread.join }
refute_nil fs_thread.join(5), "expected thread to terminate within 5 seconds"
assert_predicate(i, :closed?)
ensure
fs_thread&.kill
fs_thread&.join rescue nil
reading_thread&.kill
reading_thread&.join rescue nil
i&.close
o&.close
end
end
|
