ruby/test/rinda/test_rinda.rb

913 строки
22 KiB
Ruby

# frozen_string_literal: false
require 'test/unit'
require 'envutil'
require 'drb/drb'
require 'drb/eq'
require 'rinda/ring'
require 'rinda/tuplespace'
require 'timeout'
require 'singleton'
module Rinda
class MockClock
include Singleton
class MyTS < Rinda::TupleSpace
def keeper_thread
nil
end
def stop_keeper
if @keeper
@keeper.kill
@keeper.join
@keeper = nil
end
end
end
def initialize
@now = 2
@reso = 1
@ts = nil
@inf = 2**31 - 1
end
def start_keeper
@now = 2
@reso = 1
@ts&.stop_keeper
@ts = MyTS.new
@ts.write([2, :now])
@inf = 2**31 - 1
end
def stop_keeper
@ts.stop_keeper
end
def now
@now.to_f
end
def at(n)
n
end
def _forward(n=nil)
now ,= @ts.take([nil, :now])
@now = now + n
@ts.write([@now, :now])
end
def forward(n)
while n > 0
_forward(@reso)
n -= @reso
Thread.pass
end
end
def rewind
@ts.take([nil, :now])
@ts.write([@inf, :now])
@ts.take([nil, :now])
@now = 2
@ts.write([2, :now])
end
def sleep(n=nil)
now ,= @ts.read([nil, :now])
@ts.read([(now + n)..@inf, :now])
0
end
end
module Time
def sleep(n)
@m.sleep(n)
end
module_function :sleep
def at(n)
n
end
module_function :at
def now
defined?(@m) && @m ? @m.now : 2
end
module_function :now
def rewind
@m.rewind
end
module_function :rewind
def forward(n)
@m.forward(n)
end
module_function :forward
@m = MockClock.instance
end
class TupleSpace
def sleep(n)
Kernel.sleep(n * 0.01)
end
end
module TupleSpaceTestModule
def setup
MockClock.instance.start_keeper
end
def teardown
MockClock.instance.stop_keeper
end
def sleep(n)
if Thread.current == Thread.main
Time.forward(n)
else
Time.sleep(n)
end
end
def thread_join(th)
while th.alive?
Kernel.sleep(0.1)
sleep(1)
end
th.value
end
def test_00_tuple
tuple = Rinda::TupleEntry.new([1,2,3])
assert(!tuple.canceled?)
assert(!tuple.expired?)
assert(tuple.alive?)
end
def test_00_template
tmpl = Rinda::Template.new([1,2,3])
assert_equal(3, tmpl.size)
assert_equal(3, tmpl[2])
assert(tmpl.match([1,2,3]))
assert(!tmpl.match([1,nil,3]))
tmpl = Rinda::Template.new([/^rinda/i, nil, :hello])
assert_equal(3, tmpl.size)
assert(tmpl.match(['Rinda', 2, :hello]))
assert(!tmpl.match(['Rinda', 2, Symbol]))
assert(!tmpl.match([1, 2, :hello]))
assert(tmpl.match([/^rinda/i, 2, :hello]))
tmpl = Rinda::Template.new([Symbol])
assert_equal(1, tmpl.size)
assert(tmpl.match([:hello]))
assert(tmpl.match([Symbol]))
assert(!tmpl.match(['Symbol']))
tmpl = Rinda::Template.new({"message"=>String, "name"=>String})
assert_equal(2, tmpl.size)
assert(tmpl.match({"message"=>"Hello", "name"=>"Foo"}))
assert(!tmpl.match({"message"=>"Hello", "name"=>"Foo", "1"=>2}))
assert(!tmpl.match({"message"=>"Hi", "name"=>"Foo", "age"=>1}))
assert(!tmpl.match({"message"=>"Hello", "no_name"=>"Foo"}))
assert_raise(Rinda::InvalidHashTupleKey) do
Rinda::Template.new({:message=>String, "name"=>String})
end
tmpl = Rinda::Template.new({"name"=>String})
assert_equal(1, tmpl.size)
assert(tmpl.match({"name"=>"Foo"}))
assert(!tmpl.match({"message"=>"Hello", "name"=>"Foo"}))
assert(!tmpl.match({"message"=>:symbol, "name"=>"Foo", "1"=>2}))
assert(!tmpl.match({"message"=>"Hi", "name"=>"Foo", "age"=>1}))
assert(!tmpl.match({"message"=>"Hello", "no_name"=>"Foo"}))
tmpl = Rinda::Template.new({"message"=>String, "name"=>String})
assert_equal(2, tmpl.size)
assert(tmpl.match({"message"=>"Hello", "name"=>"Foo"}))
assert(!tmpl.match({"message"=>"Hello", "name"=>"Foo", "1"=>2}))
assert(!tmpl.match({"message"=>"Hi", "name"=>"Foo", "age"=>1}))
assert(!tmpl.match({"message"=>"Hello", "no_name"=>"Foo"}))
tmpl = Rinda::Template.new({"message"=>String})
assert_equal(1, tmpl.size)
assert(tmpl.match({"message"=>"Hello"}))
assert(!tmpl.match({"message"=>"Hello", "name"=>"Foo"}))
assert(!tmpl.match({"message"=>"Hello", "name"=>"Foo", "1"=>2}))
assert(!tmpl.match({"message"=>"Hi", "name"=>"Foo", "age"=>1}))
assert(!tmpl.match({"message"=>"Hello", "no_name"=>"Foo"}))
tmpl = Rinda::Template.new({"message"=>String, "name"=>nil})
assert_equal(2, tmpl.size)
assert(tmpl.match({"message"=>"Hello", "name"=>"Foo"}))
assert(!tmpl.match({"message"=>"Hello", "name"=>"Foo", "1"=>2}))
assert(!tmpl.match({"message"=>"Hi", "name"=>"Foo", "age"=>1}))
assert(!tmpl.match({"message"=>"Hello", "no_name"=>"Foo"}))
assert_raise(Rinda::InvalidHashTupleKey) do
@ts.write({:message=>String, "name"=>String})
end
@ts.write([1, 2, 3])
assert_equal([1, 2, 3], @ts.take([1, 2, 3]))
@ts.write({'1'=>1, '2'=>2, '3'=>3})
assert_equal({'1'=>1, '2'=>2, '3'=>3}, @ts.take({'1'=>1, '2'=>2, '3'=>3}))
entry = @ts.write(['1'=>1, '2'=>2, '3'=>3])
assert_raise(Rinda::RequestExpiredError) do
assert_equal({'1'=>1, '2'=>2, '3'=>3}, @ts.read({'1'=>1}, 0))
end
entry.cancel
end
def test_00_DRbObject
ro = DRbObject.new(nil, "druby://host:1234")
tmpl = Rinda::DRbObjectTemplate.new
assert(tmpl === ro)
tmpl = Rinda::DRbObjectTemplate.new("druby://host:1234")
assert(tmpl === ro)
tmpl = Rinda::DRbObjectTemplate.new("druby://host:12345")
assert(!(tmpl === ro))
tmpl = Rinda::DRbObjectTemplate.new(/^druby:\/\/host:/)
assert(tmpl === ro)
ro = DRbObject.new_with(12345, 1234)
assert(!(tmpl === ro))
ro = DRbObject.new_with("druby://foo:12345", 1234)
assert(!(tmpl === ro))
tmpl = Rinda::DRbObjectTemplate.new(/^druby:\/\/(foo|bar):/)
assert(tmpl === ro)
ro = DRbObject.new_with("druby://bar:12345", 1234)
assert(tmpl === ro)
ro = DRbObject.new_with("druby://baz:12345", 1234)
assert(!(tmpl === ro))
end
def test_inp_rdp
assert_raise(Rinda::RequestExpiredError) do
@ts.take([:empty], 0)
end
assert_raise(Rinda::RequestExpiredError) do
@ts.read([:empty], 0)
end
end
def test_ruby_talk_264062
th = Thread.new {
assert_raise(Rinda::RequestExpiredError) do
@ts.take([:empty], 1)
end
}
sleep(10)
thread_join(th)
th = Thread.new {
assert_raise(Rinda::RequestExpiredError) do
@ts.read([:empty], 1)
end
}
sleep(10)
thread_join(th)
end
def test_symbol_tuple
@ts.write([:symbol, :symbol])
@ts.write(['string', :string])
assert_equal([[:symbol, :symbol]], @ts.read_all([:symbol, nil]))
assert_equal([[:symbol, :symbol]], @ts.read_all([Symbol, nil]))
assert_equal([], @ts.read_all([:nil, nil]))
end
def test_core_01
5.times do
@ts.write([:req, 2])
end
assert_equal([[:req, 2], [:req, 2], [:req, 2], [:req, 2], [:req, 2]],
@ts.read_all([nil, nil]))
taker = Thread.new(5) do |count|
s = 0
count.times do
tuple = @ts.take([:req, Integer])
assert_equal(2, tuple[1])
s += tuple[1]
end
@ts.write([:ans, s])
s
end
assert_equal(10, thread_join(taker))
assert_equal([:ans, 10], @ts.take([:ans, 10]))
assert_equal([], @ts.read_all([nil, nil]))
end
def test_core_02
taker = Thread.new(5) do |count|
s = 0
count.times do
tuple = @ts.take([:req, Integer])
assert_equal(2, tuple[1])
s += tuple[1]
end
@ts.write([:ans, s])
s
end
5.times do
@ts.write([:req, 2])
end
assert_equal(10, thread_join(taker))
assert_equal([:ans, 10], @ts.take([:ans, 10]))
assert_equal([], @ts.read_all([nil, nil]))
end
def test_core_03_notify
notify1 = @ts.notify(nil, [:req, Integer])
notify2 = @ts.notify(nil, {"message"=>String, "name"=>String})
5.times do
@ts.write([:req, 2])
end
5.times do
tuple = @ts.take([:req, Integer])
assert_equal(2, tuple[1])
end
5.times do
assert_equal(['write', [:req, 2]], notify1.pop)
end
5.times do
assert_equal(['take', [:req, 2]], notify1.pop)
end
@ts.write({"message"=>"first", "name"=>"3"})
@ts.write({"message"=>"second", "name"=>"1"})
@ts.write({"message"=>"third", "name"=>"0"})
@ts.take({"message"=>"third", "name"=>"0"})
@ts.take({"message"=>"first", "name"=>"3"})
assert_equal(["write", {"message"=>"first", "name"=>"3"}], notify2.pop)
assert_equal(["write", {"message"=>"second", "name"=>"1"}], notify2.pop)
assert_equal(["write", {"message"=>"third", "name"=>"0"}], notify2.pop)
assert_equal(["take", {"message"=>"third", "name"=>"0"}], notify2.pop)
assert_equal(["take", {"message"=>"first", "name"=>"3"}], notify2.pop)
end
def test_cancel_01
entry = @ts.write([:removeme, 1])
assert_equal([[:removeme, 1]], @ts.read_all([nil, nil]))
entry.cancel
assert_equal([], @ts.read_all([nil, nil]))
template = nil
taker = Thread.new do
assert_raise(Rinda::RequestCanceledError) do
@ts.take([:take, nil], 10) do |t|
template = t
Thread.new do
template.cancel
end
end
end
end
sleep(2)
thread_join(taker)
assert(template.canceled?)
@ts.write([:take, 1])
assert_equal([[:take, 1]], @ts.read_all([nil, nil]))
end
def test_cancel_02
omit 'this test is unstable with --jit-wait' if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled?
entry = @ts.write([:removeme, 1])
assert_equal([[:removeme, 1]], @ts.read_all([nil, nil]))
entry.cancel
assert_equal([], @ts.read_all([nil, nil]))
template = nil
reader = Thread.new do
assert_raise(Rinda::RequestCanceledError) do
@ts.read([:take, nil], 10) do |t|
template = t
Thread.new do
template.cancel
end
end
end
end
sleep(2)
thread_join(reader)
assert(template.canceled?)
@ts.write([:take, 1])
assert_equal([[:take, 1]], @ts.read_all([nil, nil]))
end
class SimpleRenewer
def initialize(sec, n = 1)
@sec = sec
@n = n
end
def renew
return -1 if @n <= 0
@n -= 1
return @sec
end
end
def test_00_renewer
tuple = Rinda::TupleEntry.new([1,2,3], true)
assert(!tuple.canceled?)
assert(tuple.expired?)
assert(!tuple.alive?)
tuple = Rinda::TupleEntry.new([1,2,3], 1)
assert(!tuple.canceled?)
assert(!tuple.expired?)
assert(tuple.alive?)
sleep(2)
assert(tuple.expired?)
assert(!tuple.alive?)
@renewer = SimpleRenewer.new(1,2)
tuple = Rinda::TupleEntry.new([1,2,3], @renewer)
assert(!tuple.canceled?)
assert(!tuple.expired?)
assert(tuple.alive?)
sleep(1)
assert(!tuple.canceled?)
assert(!tuple.expired?)
assert(tuple.alive?)
sleep(2)
assert(tuple.expired?)
assert(!tuple.alive?)
end
end
class TupleSpaceTest < Test::Unit::TestCase
include TupleSpaceTestModule
def setup
super
ThreadGroup.new.add(Thread.current)
@ts = Rinda::TupleSpace.new(1)
end
def teardown
# implementation-dependent
@ts.instance_eval{
if th = @keeper
th.kill
th.join
end
}
super
end
end
class TupleSpaceProxyTest < Test::Unit::TestCase
include TupleSpaceTestModule
def setup
if RUBY_PLATFORM.match?(/mingw/)
@omitted = true
omit 'This test seems to randomly hang on GitHub Actions MinGW'
end
super
ThreadGroup.new.add(Thread.current)
@ts_base = Rinda::TupleSpace.new(1)
@ts = Rinda::TupleSpaceProxy.new(@ts_base)
@server = DRb.start_service("druby://localhost:0")
end
def teardown
return if @omitted
@omitted = false
# implementation-dependent
@ts_base.instance_eval{
if th = @keeper
th.kill
th.join
end
}
@server.stop_service
DRb::DRbConn.stop_pool
super
end
def test_remote_array_and_hash
# Don't remove ary/hsh local variables.
# These are necessary to protect objects from GC.
ary = [1, 2, 3]
@ts.write(DRbObject.new(ary))
assert_equal([1, 2, 3], @ts.take([1, 2, 3], 0))
hsh = {'head' => 1, 'tail' => 2}
@ts.write(DRbObject.new(hsh))
assert_equal({'head' => 1, 'tail' => 2},
@ts.take({'head' => 1, 'tail' => 2}, 0))
end
def test_take_bug_8215
omit "this test randomly fails on mswin" if /mswin/ =~ RUBY_PLATFORM
service = DRb.start_service("druby://localhost:0", @ts_base)
uri = service.uri
args = [EnvUtil.rubybin, *%W[-rdrb/drb -rdrb/eq -rrinda/ring -rrinda/tuplespace -e]]
take = spawn(*args, <<-'end;', uri)
uri = ARGV[0]
DRb.start_service("druby://localhost:0")
ro = DRbObject.new_with_uri(uri)
ts = Rinda::TupleSpaceProxy.new(ro)
th = Thread.new do
ts.take([:test_take, nil])
rescue Interrupt
# Expected
end
Kernel.sleep(0.1)
th.raise(Interrupt) # causes loss of the taken tuple
ts.write([:barrier, :continue])
Kernel.sleep
end;
@ts_base.take([:barrier, :continue])
write = spawn(*args, <<-'end;', uri)
uri = ARGV[0]
DRb.start_service("druby://localhost:0")
ro = DRbObject.new_with_uri(uri)
ts = Rinda::TupleSpaceProxy.new(ro)
ts.write([:test_take, 42])
end;
status = Process.wait(write)
assert_equal([[:test_take, 42]], @ts_base.read_all([:test_take, nil]),
'[bug:8215] tuple lost')
ensure
service.stop_service if service
DRb::DRbConn.stop_pool
signal = /mswin|mingw/ =~ RUBY_PLATFORM ? "KILL" : "TERM"
Process.kill(signal, write) if write && status.nil?
Process.kill(signal, take) if take
Process.wait(write) if write && status.nil?
Process.wait(take) if take
end
end
module RingIPv4
def ipv4_mc(rf)
begin
v4mc = rf.make_socket('239.0.0.1')
rescue Errno::ENETUNREACH, Errno::ENOBUFS, Errno::ENODEV
omit 'IPv4 multicast not available'
end
begin
yield v4mc
ensure
v4mc.close
end
end
end
module RingIPv6
def prepare_ipv6(r)
begin
Socket.getifaddrs.each do |ifaddr|
next unless ifaddr.addr
next unless ifaddr.addr.ipv6_linklocal?
next if ifaddr.name[0, 2] == "lo"
r.multicast_interface = ifaddr.ifindex
return ifaddr
end
rescue NotImplementedError
# ifindex() function may not be implemented on Windows.
return if
Socket.ip_address_list.any? { |addrinfo| addrinfo.ipv6? && !addrinfo.ipv6_loopback? }
end
omit 'IPv6 not available'
end
def ipv6_mc(rf, hops = nil)
ifaddr = prepare_ipv6(rf)
rf.multicast_hops = hops if hops
begin
v6mc = rf.make_socket("ff02::1")
rescue Errno::EINVAL
# somehow Debian 6.0.7 needs ifname
v6mc = rf.make_socket("ff02::1%#{ifaddr.name}")
rescue Errno::EADDRNOTAVAIL
return # IPv6 address for multicast not available
rescue Errno::ENETDOWN
return # Network is down
rescue Errno::EHOSTUNREACH
return # Unreachable for some reason
end
begin
yield v6mc
ensure
v6mc.close
end
end
end
class TestRingServer < Test::Unit::TestCase
include RingIPv4
def setup
@port = Rinda::Ring_PORT
@ts = Rinda::TupleSpace.new
@rs = Rinda::RingServer.new(@ts, [], @port)
@server = DRb.start_service("druby://localhost:0")
end
def teardown
@rs.shutdown
# implementation-dependent
@ts.instance_eval{
if th = @keeper
th.kill
th.join
end
}
@server.stop_service
DRb::DRbConn.stop_pool
end
def test_do_reply
with_timeout(30) {_test_do_reply}
end
def _test_do_reply
called = nil
callback_orig = proc { |ts|
called = ts
}
callback = DRb::DRbObject.new callback_orig
@ts.write [:lookup_ring, callback]
@rs.do_reply
wait_for(30) {called}
assert_same @ts, called
end
def test_do_reply_local
omit 'timeout-based test becomes unstable with --jit-wait' if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled?
with_timeout(30) {_test_do_reply_local}
end
def _test_do_reply_local
called = nil
callback = proc { |ts|
called = ts
}
@ts.write [:lookup_ring, callback]
@rs.do_reply
wait_for(30) {called}
assert_same @ts, called
end
def test_make_socket_unicast
v4 = @rs.make_socket('127.0.0.1')
assert_equal('127.0.0.1', v4.local_address.ip_address)
assert_equal(@port, v4.local_address.ip_port)
end
def test_make_socket_ipv4_multicast
ipv4_mc(@rs) do |v4mc|
begin
if Socket.const_defined?(:SO_REUSEPORT) then
assert(v4mc.getsockopt(:SOCKET, :SO_REUSEPORT).bool)
else
assert(v4mc.getsockopt(:SOCKET, :SO_REUSEADDR).bool)
end
rescue TypeError
if /aix/ =~ RUBY_PLATFORM
omit "Known bug in getsockopt(2) on AIX"
end
raise $!
end
assert_equal('0.0.0.0', v4mc.local_address.ip_address)
assert_equal(@port, v4mc.local_address.ip_port)
end
end
def test_make_socket_ipv6_multicast
omit 'IPv6 not available' unless
Socket.ip_address_list.any? { |addrinfo| addrinfo.ipv6? && !addrinfo.ipv6_loopback? }
begin
v6mc = @rs.make_socket('ff02::1')
rescue Errno::EADDRNOTAVAIL
return # IPv6 address for multicast not available
rescue Errno::ENOBUFS => e
omit "Missing multicast support in OS: #{e.message}"
end
if Socket.const_defined?(:SO_REUSEPORT) then
assert v6mc.getsockopt(:SOCKET, :SO_REUSEPORT).bool
else
assert v6mc.getsockopt(:SOCKET, :SO_REUSEADDR).bool
end
assert_equal('::1', v6mc.local_address.ip_address)
assert_equal(@port, v6mc.local_address.ip_port)
end
def test_ring_server_ipv4_multicast
@rs.shutdown
begin
@rs = Rinda::RingServer.new(@ts, [['239.0.0.1', '0.0.0.0']], @port)
rescue Errno::ENOBUFS, Errno::ENODEV => e
omit "Missing multicast support in OS: #{e.message}"
end
v4mc = @rs.instance_variable_get('@sockets').first
begin
if Socket.const_defined?(:SO_REUSEPORT) then
assert(v4mc.getsockopt(:SOCKET, :SO_REUSEPORT).bool)
else
assert(v4mc.getsockopt(:SOCKET, :SO_REUSEADDR).bool)
end
rescue TypeError
if /aix/ =~ RUBY_PLATFORM
omit "Known bug in getsockopt(2) on AIX"
end
raise $!
end
assert_equal('0.0.0.0', v4mc.local_address.ip_address)
assert_equal(@port, v4mc.local_address.ip_port)
end
def test_ring_server_ipv6_multicast
omit 'IPv6 not available' unless
Socket.ip_address_list.any? { |addrinfo| addrinfo.ipv6? && !addrinfo.ipv6_loopback? }
@rs.shutdown
begin
@rs = Rinda::RingServer.new(@ts, [['ff02::1', '::1', 0]], @port)
rescue Errno::EADDRNOTAVAIL
return # IPv6 address for multicast not available
end
v6mc = @rs.instance_variable_get('@sockets').first
if Socket.const_defined?(:SO_REUSEPORT) then
assert v6mc.getsockopt(:SOCKET, :SO_REUSEPORT).bool
else
assert v6mc.getsockopt(:SOCKET, :SO_REUSEADDR).bool
end
assert_equal('::1', v6mc.local_address.ip_address)
assert_equal(@port, v6mc.local_address.ip_port)
end
def test_shutdown
@rs.shutdown
assert_nil(@rs.do_reply, 'otherwise should hang forever')
end
private
def with_timeout(n)
aoe = Thread.abort_on_exception
Thread.abort_on_exception = true
tl0 = Thread.list
tl = nil
th = Thread.new(Thread.current) do |mth|
sleep n
(tl = Thread.list - tl0).each {|t|t.raise(Timeout::Error)}
mth.raise(Timeout::Error)
end
tl0 << th
yield
rescue Timeout::Error => e
$stderr.puts "TestRingServer#with_timeout: timeout in #{n}s:"
$stderr.puts caller
if tl
bt = e.backtrace
tl.each do |t|
begin
t.value
rescue Timeout::Error => e
bt.unshift("")
bt[0, 0] = e.backtrace
end
end
end
raise Timeout::Error, "timeout", bt
ensure
if th
th.kill
th.join
end
Thread.abort_on_exception = aoe
end
def wait_for(n)
t = n + Process.clock_gettime(Process::CLOCK_MONOTONIC, :second)
until yield
if t < Process.clock_gettime(Process::CLOCK_MONOTONIC, :second)
flunk "timeout during waiting call"
end
sleep 0.1
end
end
end
class TestRingFinger < Test::Unit::TestCase
include RingIPv6
include RingIPv4
def setup
@rf = Rinda::RingFinger.new
end
def test_make_socket_unicast
v4 = @rf.make_socket('127.0.0.1')
assert(v4.getsockopt(:SOL_SOCKET, :SO_BROADCAST).bool)
rescue TypeError
if /aix/ =~ RUBY_PLATFORM
omit "Known bug in getsockopt(2) on AIX"
end
raise $!
ensure
v4.close if v4
end
def test_make_socket_ipv4_multicast
ipv4_mc(@rf) do |v4mc|
assert_equal(1, v4mc.getsockopt(:IPPROTO_IP, :IP_MULTICAST_LOOP).ipv4_multicast_loop)
assert_equal(1, v4mc.getsockopt(:IPPROTO_IP, :IP_MULTICAST_TTL).ipv4_multicast_ttl)
end
end
def test_make_socket_ipv6_multicast
ipv6_mc(@rf) do |v6mc|
assert_equal(1, v6mc.getsockopt(:IPPROTO_IPV6, :IPV6_MULTICAST_LOOP).int)
assert_equal(1, v6mc.getsockopt(:IPPROTO_IPV6, :IPV6_MULTICAST_HOPS).int)
end
end
def test_make_socket_ipv4_multicast_hops
@rf.multicast_hops = 2
ipv4_mc(@rf) do |v4mc|
assert_equal(2, v4mc.getsockopt(:IPPROTO_IP, :IP_MULTICAST_TTL).ipv4_multicast_ttl)
end
end
def test_make_socket_ipv6_multicast_hops
ipv6_mc(@rf, 2) do |v6mc|
assert_equal(2, v6mc.getsockopt(:IPPROTO_IPV6, :IPV6_MULTICAST_HOPS).int)
end
end
end
end