Fresh start

1 files changed, 651 insertions, 0 deletions

diff --git a/jni/ruby/test/socket/test_addrinfo.rb b/jni/ruby/test/socket/test_addrinfo.rb
new file mode 100644
index 0000000..96e1991
--- /dev/null
+++ b/jni/ruby/test/socket/test_addrinfo.rb
@@ -0,0 +1,651 @@
+begin
+  require "socket"
+rescue LoadError
+end
+
+require "test/unit"
+
+class TestSocketAddrinfo < Test::Unit::TestCase
+  HAS_UNIXSOCKET = defined?(UNIXSocket) && /cygwin/ !~ RUBY_PLATFORM
+
+  def tcp_unspecified_to_loopback(addrinfo)
+    if addrinfo.ipv4? && addrinfo.ip_address == "0.0.0.0"
+      Addrinfo.tcp("127.0.0.1", addrinfo.ip_port)
+    elsif addrinfo.ipv6? && addrinfo.ipv6_unspecified?
+      Addrinfo.tcp("::1", addrinfo.ip_port)
+    elsif addrinfo.ipv6? && (ai = addrinfo.ipv6_to_ipv4) && ai.ip_address == "0.0.0.0"
+      Addrinfo.tcp("127.0.0.1", addrinfo.ip_port)
+    else
+      addrinfo
+    end
+  end
+
+  def test_addrinfo_ip
+    ai = Addrinfo.ip("127.0.0.1")
+    assert_equal([0, "127.0.0.1"], Socket.unpack_sockaddr_in(ai))
+    assert_equal(Socket::AF_INET, ai.afamily)
+    assert_equal(Socket::PF_INET, ai.pfamily)
+    assert_equal(0, ai.socktype)
+    assert_equal(0, ai.protocol)
+  end
+
+  def test_addrinfo_tcp
+    ai = Addrinfo.tcp("127.0.0.1", 80)
+    assert_equal([80, "127.0.0.1"], Socket.unpack_sockaddr_in(ai))
+    assert_equal(Socket::AF_INET, ai.afamily)
+    assert_equal(Socket::PF_INET, ai.pfamily)
+    assert_equal(Socket::SOCK_STREAM, ai.socktype)
+    assert_include([0, Socket::IPPROTO_TCP], ai.protocol)
+  end
+
+  def test_addrinfo_udp
+    ai = Addrinfo.udp("127.0.0.1", 80)
+    assert_equal([80, "127.0.0.1"], Socket.unpack_sockaddr_in(ai))
+    assert_equal(Socket::AF_INET, ai.afamily)
+    assert_equal(Socket::PF_INET, ai.pfamily)
+    assert_equal(Socket::SOCK_DGRAM, ai.socktype)
+    assert_include([0, Socket::IPPROTO_UDP], ai.protocol)
+  end
+
+  def test_addrinfo_ip_unpack
+    ai = Addrinfo.tcp("127.0.0.1", 80)
+    assert_equal(["127.0.0.1", 80], ai.ip_unpack)
+    assert_equal("127.0.0.1", ai.ip_address)
+    assert_equal(80, ai.ip_port)
+  end
+
+  def test_addrinfo_inspect_sockaddr
+    ai = Addrinfo.tcp("127.0.0.1", 80)
+    assert_equal("127.0.0.1:80", ai.inspect_sockaddr)
+  end
+
+  def test_addrinfo_new_inet
+    ai = Addrinfo.new(["AF_INET", 46102, "localhost.localdomain", "127.0.0.2"])
+    assert_equal([46102, "127.0.0.2"], Socket.unpack_sockaddr_in(ai))
+    assert_equal(Socket::AF_INET, ai.afamily)
+    assert_equal(Socket::PF_INET, ai.pfamily)
+    assert_equal(0, ai.socktype)
+    assert_equal(0, ai.protocol)
+  end
+
+  def test_addrinfo_predicates
+    ipv4_ai = Addrinfo.new(Socket.sockaddr_in(80, "192.168.0.1"))
+    assert(ipv4_ai.ip?)
+    assert(ipv4_ai.ipv4?)
+    assert(!ipv4_ai.ipv6?)
+    assert(!ipv4_ai.unix?)
+  end
+
+  def test_ipv4_address_predicates
+    list = [
+      [:ipv4_private?, "10.0.0.0", "10.255.255.255",
+                       "172.16.0.0", "172.31.255.255",
+                       "192.168.0.0", "192.168.255.255"],
+      [:ipv4_loopback?, "127.0.0.1", "127.0.0.0", "127.255.255.255"],
+      [:ipv4_multicast?, "224.0.0.0", "224.255.255.255"]
+    ]
+    list.each {|meth, *addrs|
+      addrs.each {|addr|
+        assert(Addrinfo.ip(addr).send(meth), "Addrinfo.ip(#{addr.inspect}).#{meth}")
+        list.each {|meth2,|
+          next if meth == meth2
+          assert(!Addrinfo.ip(addr).send(meth2), "!Addrinfo.ip(#{addr.inspect}).#{meth2}")
+        }
+      }
+    }
+  end
+
+  def test_basicsocket_send
+    s1 = Socket.new(:INET, :DGRAM, 0)
+    s1.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    sa = s1.getsockname
+    ai = Addrinfo.new(sa)
+    s2 = Socket.new(:INET, :DGRAM, 0)
+    s2.send("test-basicsocket-send", 0, ai)
+    assert_equal("test-basicsocket-send", s1.recv(100))
+  ensure
+    s1.close if s1 && !s1.closed?
+    s2.close if s2 && !s2.closed?
+  end
+
+  def test_udpsocket_send
+    s1 = UDPSocket.new
+    s1.bind("127.0.0.1", 0)
+    ai = Addrinfo.new(s1.getsockname)
+    s2 = UDPSocket.new
+    s2.send("test-udp-send", 0, ai)
+    assert_equal("test-udp-send", s1.recv(100))
+  ensure
+    s1.close if s1 && !s1.closed?
+    s2.close if s2 && !s2.closed?
+  end
+
+  def test_socket_bind
+    s1 = Socket.new(:INET, :DGRAM, 0)
+    sa = Socket.sockaddr_in(0, "127.0.0.1")
+    ai = Addrinfo.new(sa)
+    s1.bind(ai)
+    s2 = UDPSocket.new
+    s2.send("test-socket-bind", 0, s1.getsockname)
+    assert_equal("test-socket-bind", s1.recv(100))
+  ensure
+    s1.close if s1 && !s1.closed?
+    s2.close if s2 && !s2.closed?
+  end
+
+  def test_socket_connect
+    s1 = Socket.new(:INET, :STREAM, 0)
+    s1.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    s1.listen(5)
+    ai = Addrinfo.new(s1.getsockname)
+    s2 = Socket.new(:INET, :STREAM, 0)
+    s2.connect(ai)
+    s3, _ = s1.accept
+    s2.send("test-socket-connect", 0)
+    assert_equal("test-socket-connect", s3.recv(100))
+  ensure
+    s1.close if s1 && !s1.closed?
+    s2.close if s2 && !s2.closed?
+    s3.close if s3 && !s3.closed?
+  end
+
+  def test_socket_connect_nonblock
+    s1 = Socket.new(:INET, :STREAM, 0)
+    s1.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    s1.listen(5)
+    ai = Addrinfo.new(s1.getsockname)
+    s2 = Socket.new(:INET, :STREAM, 0)
+    begin
+      s2.connect_nonblock(ai)
+    rescue IO::WaitWritable
+      IO.select(nil, [s2])
+      r = s2.getsockopt(Socket::SOL_SOCKET, Socket::SO_ERROR)
+      assert_equal(0, r.int, "NOERROR is expected but #{r.inspect}")
+      begin
+        s2.connect_nonblock(ai)
+      rescue Errno::EISCONN
+      end
+    end
+    s3, _ = s1.accept
+    s2.send("test-socket-connect-nonblock", 0)
+    assert_equal("test-socket-connect-nonblock", s3.recv(100))
+  ensure
+    s1.close if s1 && !s1.closed?
+    s2.close if s2 && !s2.closed?
+    s3.close if s3 && !s3.closed?
+  end
+
+  def test_socket_getnameinfo
+     ai = Addrinfo.udp("127.0.0.1", 8888)
+     assert_equal(["127.0.0.1", "8888"], Socket.getnameinfo(ai, Socket::NI_NUMERICHOST|Socket::NI_NUMERICSERV))
+  end
+
+  def test_basicsocket_local_address
+    s1 = Socket.new(:INET, :DGRAM, 0)
+    s1.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    e = Socket.unpack_sockaddr_in(s1.getsockname)
+    a = Socket.unpack_sockaddr_in(s1.local_address.to_sockaddr)
+    assert_equal(e, a)
+    assert_equal(Socket::AF_INET, s1.local_address.afamily)
+    assert_equal(Socket::PF_INET, s1.local_address.pfamily)
+    assert_equal(Socket::SOCK_DGRAM, s1.local_address.socktype)
+  ensure
+    s1.close if s1 && !s1.closed?
+  end
+
+  def test_basicsocket_remote_address
+    s1 = TCPServer.new("127.0.0.1", 0)
+    s2 = Socket.new(:INET, :STREAM, 0)
+    s2.connect(s1.getsockname)
+    s3, _ = s1.accept
+    e = Socket.unpack_sockaddr_in(s2.getsockname)
+    a = Socket.unpack_sockaddr_in(s3.remote_address.to_sockaddr)
+    assert_equal(e, a)
+    assert_equal(Socket::AF_INET, s3.remote_address.afamily)
+    assert_equal(Socket::PF_INET, s3.remote_address.pfamily)
+    assert_equal(Socket::SOCK_STREAM, s3.remote_address.socktype)
+  ensure
+    s1.close if s1 && !s1.closed?
+    s2.close if s2 && !s2.closed?
+    s3.close if s3 && !s3.closed?
+  end
+
+  def test_socket_accept
+    serv = Socket.new(:INET, :STREAM, 0)
+    serv.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    serv.listen(5)
+    c = Socket.new(:INET, :STREAM, 0)
+    c.connect(serv.local_address)
+    ret = serv.accept
+    s, ai = ret
+    assert_kind_of(Array, ret)
+    assert_equal(2, ret.length)
+    assert_kind_of(Addrinfo, ai)
+    e = Socket.unpack_sockaddr_in(c.getsockname)
+    a = Socket.unpack_sockaddr_in(ai.to_sockaddr)
+    assert_equal(e, a)
+  ensure
+    serv.close if serv && !serv.closed?
+    s.close if s && !s.closed?
+    c.close if c && !c.closed?
+  end
+
+  def test_socket_accept_nonblock
+    serv = Socket.new(:INET, :STREAM, 0)
+    serv.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    serv.listen(5)
+    c = Socket.new(:INET, :STREAM, 0)
+    c.connect(serv.local_address)
+    begin
+      ret = serv.accept_nonblock
+    rescue IO::WaitReadable, Errno::EINTR
+      IO.select([serv])
+      retry
+    end
+    s, ai = ret
+    assert_kind_of(Array, ret)
+    assert_equal(2, ret.length)
+    assert_kind_of(Addrinfo, ai)
+    e = Socket.unpack_sockaddr_in(c.getsockname)
+    a = Socket.unpack_sockaddr_in(ai.to_sockaddr)
+    assert_equal(e, a)
+  ensure
+    serv.close if serv && !serv.closed?
+    s.close if s && !s.closed?
+    c.close if c && !c.closed?
+  end
+
+  def test_socket_sysaccept
+    serv = Socket.new(:INET, :STREAM, 0)
+    serv.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    serv.listen(5)
+    c = Socket.new(:INET, :STREAM, 0)
+    c.connect(serv.local_address)
+    ret = serv.sysaccept
+    fd, ai = ret
+    s = IO.new(fd)
+    assert_kind_of(Array, ret)
+    assert_equal(2, ret.length)
+    assert_kind_of(Addrinfo, ai)
+    e = Socket.unpack_sockaddr_in(c.getsockname)
+    a = Socket.unpack_sockaddr_in(ai.to_sockaddr)
+    assert_equal(e, a)
+  ensure
+    serv.close if serv && !serv.closed?
+    s.close if s && !s.closed?
+    c.close if c && !c.closed?
+  end
+
+  def test_socket_recvfrom
+    s1 = Socket.new(:INET, :DGRAM, 0)
+    s1.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    s2 = Socket.new(:INET, :DGRAM, 0)
+    s2.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    s2.send("test-socket-recvfrom", 0, s1.getsockname)
+    data, ai = s1.recvfrom(100)
+    assert_equal("test-socket-recvfrom", data)
+    assert_kind_of(Addrinfo, ai)
+    e = Socket.unpack_sockaddr_in(s2.getsockname)
+    a = Socket.unpack_sockaddr_in(ai.to_sockaddr)
+    assert_equal(e, a)
+  ensure
+    s1.close if s1 && !s1.closed?
+    s2.close if s2 && !s2.closed?
+  end
+
+  def test_socket_recvfrom_nonblock
+    s1 = Socket.new(:INET, :DGRAM, 0)
+    s1.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    s2 = Socket.new(:INET, :DGRAM, 0)
+    s2.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+    s2.send("test-socket-recvfrom", 0, s1.getsockname)
+    begin
+      data, ai = s1.recvfrom_nonblock(100)
+    rescue IO::WaitReadable
+      IO.select([s1])
+      retry
+    end
+    assert_equal("test-socket-recvfrom", data)
+    assert_kind_of(Addrinfo, ai)
+    e = Socket.unpack_sockaddr_in(s2.getsockname)
+    a = Socket.unpack_sockaddr_in(ai.to_sockaddr)
+    assert_equal(e, a)
+  ensure
+    s1.close if s1 && !s1.closed?
+    s2.close if s2 && !s2.closed?
+  end
+
+  def test_family_addrinfo
+    ai = Addrinfo.tcp("0.0.0.0", 4649).family_addrinfo("127.0.0.1", 80)
+    assert_equal(["127.0.0.1", 80], ai.ip_unpack)
+    assert_equal(Socket::SOCK_STREAM, ai.socktype)
+    return unless Addrinfo.respond_to?(:unix)
+    ai = Addrinfo.unix("/testdir/sock").family_addrinfo("/testdir/sock2")
+    assert_equal("/testdir/sock2", ai.unix_path)
+    assert_equal(Socket::SOCK_STREAM, ai.socktype)
+    assert_raise(SocketError) { Addrinfo.tcp("0.0.0.0", 4649).family_addrinfo("::1", 80) }
+  end
+
+  def random_port
+    # IANA suggests dynamic port for 49152 to 65535
+    # http://www.iana.org/assignments/port-numbers
+    49152 + rand(65535-49152+1)
+  end
+
+  def errors_addrinuse
+    [Errno::EADDRINUSE]
+  end
+
+  def test_connect_from
+    TCPServer.open("0.0.0.0", 0) {|serv|
+      serv_ai = Addrinfo.new(serv.getsockname, :INET, :STREAM)
+      serv_ai = tcp_unspecified_to_loopback(serv_ai)
+      port = random_port
+      begin
+        serv_ai.connect_from("0.0.0.0", port) {|s1|
+          s2 = serv.accept
+          begin
+            assert_equal(port, s2.remote_address.ip_port)
+          ensure
+            s2.close
+          end
+        }
+      rescue *errors_addrinuse
+        # not test failure
+      end
+    }
+
+    TCPServer.open("0.0.0.0", 0) {|serv|
+      serv_ai = Addrinfo.new(serv.getsockname, :INET, :STREAM)
+      serv_ai = tcp_unspecified_to_loopback(serv_ai)
+      port = random_port
+      begin
+        serv_ai.connect_from(Addrinfo.tcp("0.0.0.0", port)) {|s1|
+          s2 = serv.accept
+          begin
+            assert_equal(port, s2.remote_address.ip_port)
+          ensure
+            s2.close
+          end
+        }
+      rescue *errors_addrinuse
+        # not test failure
+      end
+    }
+  end
+
+  def test_connect_to
+    TCPServer.open("0.0.0.0", 0) {|serv|
+      serv_ai = Addrinfo.new(serv.getsockname, :INET, :STREAM)
+      serv_ai = tcp_unspecified_to_loopback(serv_ai)
+      port = random_port
+      client_ai = Addrinfo.tcp("0.0.0.0", port)
+      begin
+        client_ai.connect_to(*serv_ai.ip_unpack) {|s1|
+          s2 = serv.accept
+          begin
+            assert_equal(port, s2.remote_address.ip_port)
+          ensure
+            s2.close
+          end
+        }
+      rescue *errors_addrinuse
+        # not test failure
+      end
+    }
+  end
+
+  def test_connect
+    TCPServer.open("0.0.0.0", 0) {|serv|
+      serv_ai = Addrinfo.new(serv.getsockname, :INET, :STREAM)
+      serv_ai = tcp_unspecified_to_loopback(serv_ai)
+      begin
+        serv_ai.connect {|s1|
+          s2 = serv.accept
+          begin
+            assert_equal(s1.local_address.ip_unpack, s2.remote_address.ip_unpack)
+            assert_equal(s2.local_address.ip_unpack, s1.remote_address.ip_unpack)
+          ensure
+            s2.close
+          end
+        }
+      rescue *errors_addrinuse
+        # not test failure
+      end
+    }
+  end
+
+  def test_bind
+    port = random_port
+    client_ai = Addrinfo.tcp("0.0.0.0", port)
+    begin
+      client_ai.bind {|s|
+        assert_equal(port, s.local_address.ip_port)
+      }
+    rescue *errors_addrinuse
+      # not test failure
+    end
+  end
+
+  def test_listen
+    port = random_port
+    client_ai = Addrinfo.tcp("0.0.0.0", port)
+    begin
+      client_ai.listen {|serv|
+        assert_equal(port, serv.local_address.ip_port)
+        serv_addr, serv_port = serv.local_address.ip_unpack
+        case serv_addr
+	when "0.0.0.0" then serv_addr = "127.0.0.1"
+	end
+        TCPSocket.open(serv_addr, serv_port) {|s1|
+          s2, addr = serv.accept
+          begin
+            assert_equal(s1.local_address.ip_unpack, addr.ip_unpack)
+          ensure
+            s2.close
+          end
+        }
+      }
+    rescue *errors_addrinuse
+      # not test failure
+    end
+  end
+
+  def test_s_foreach
+    Addrinfo.foreach(nil, 80, nil, :STREAM) {|ai|
+      assert_kind_of(Addrinfo, ai)
+    }
+  end
+
+  def test_marshal
+    ai1 = Addrinfo.tcp("127.0.0.1", 80)
+    ai2 = Marshal.load(Marshal.dump(ai1))
+    assert_equal(ai1.afamily, ai2.afamily)
+    assert_equal(ai1.ip_unpack, ai2.ip_unpack)
+    assert_equal(ai1.pfamily, ai2.pfamily)
+    assert_equal(ai1.socktype, ai2.socktype)
+    assert_equal(ai1.protocol, ai2.protocol)
+    assert_equal(ai1.canonname, ai2.canonname)
+  end
+
+  def test_marshal_memory_leak
+    bug11051 = '[ruby-dev:48923] [Bug #11051]'
+    assert_no_memory_leak(%w[-rsocket], <<-PREP, <<-CODE, bug11051, rss: true, limit: 2.0)
+    d = Marshal.dump(Addrinfo.tcp("127.0.0.1", 80))
+    1000.times {Marshal.load(d)}
+    PREP
+    GC.start
+    20_000.times {Marshal.load(d)}
+    CODE
+  end
+
+  if Socket.const_defined?("AF_INET6") && Socket::AF_INET6.is_a?(Integer)
+
+    def test_addrinfo_new_inet6
+      ai = Addrinfo.new(["AF_INET6", 42304, "ip6-localhost", "::1"])
+      assert_equal([42304, "::1"], Socket.unpack_sockaddr_in(ai))
+      assert_equal(Socket::AF_INET6, ai.afamily)
+      assert_equal(Socket::PF_INET6, ai.pfamily)
+      assert_equal(0, ai.socktype)
+      assert_equal(0, ai.protocol)
+    end
+
+    def test_addrinfo_ip_unpack_inet6
+      ai = Addrinfo.tcp("::1", 80)
+      assert_equal(["::1", 80], ai.ip_unpack)
+      assert_equal("::1", ai.ip_address)
+      assert_equal(80, ai.ip_port)
+    end
+
+    def test_addrinfo_inspect_sockaddr_inet6
+      ai = Addrinfo.tcp("::1", 80)
+      assert_equal("[::1]:80", ai.inspect_sockaddr)
+    end
+
+    def test_marshal_inet6
+      ai1 = Addrinfo.tcp("::1", 80)
+      ai2 = Marshal.load(Marshal.dump(ai1))
+      assert_equal(ai1.afamily, ai2.afamily)
+      assert_equal(ai1.ip_unpack, ai2.ip_unpack)
+      assert_equal(ai1.pfamily, ai2.pfamily)
+      assert_equal(ai1.socktype, ai2.socktype)
+      assert_equal(ai1.protocol, ai2.protocol)
+      assert_equal(ai1.canonname, ai2.canonname)
+    end
+
+    def ipv6(str)
+      Addrinfo.getaddrinfo(str, nil, :INET6, :DGRAM).fetch(0)
+    end
+
+    def test_ipv6_address_predicates
+      list = [
+        [:ipv6_unspecified?, "::"],
+        [:ipv6_loopback?, "::1"],
+        [:ipv6_v4compat?, "::0.0.0.2", "::255.255.255.255"],
+        [:ipv6_v4mapped?, "::ffff:0.0.0.0", "::ffff:255.255.255.255"],
+        [:ipv6_linklocal?, "fe80::", "febf::"],
+        [:ipv6_sitelocal?, "fec0::", "feef::"],
+        [:ipv6_multicast?, "ff00::", "ffff::"],
+        [:ipv6_unique_local?, "fc00::", "fd00::"],
+      ]
+      mlist = [
+        [:ipv6_mc_nodelocal?, "ff01::", "ff11::"],
+        [:ipv6_mc_linklocal?, "ff02::", "ff12::"],
+        [:ipv6_mc_sitelocal?, "ff05::", "ff15::"],
+        [:ipv6_mc_orglocal?, "ff08::", "ff18::"],
+        [:ipv6_mc_global?, "ff0e::", "ff1e::"]
+      ]
+      list.each {|meth, *addrs|
+        addrs.each {|addr|
+          addr_exp = "Addrinfo.getaddrinfo(#{addr.inspect}, nil, :INET6, :DGRAM).fetch(0)"
+	  if meth == :ipv6_v4compat? || meth == :ipv6_v4mapped?
+	    # MacOS X returns IPv4 address for ::ffff:1.2.3.4 and ::1.2.3.4.
+            # Solaris returns IPv4 address for ::ffff:1.2.3.4.
+	    ai = ipv6(addr)
+	    assert(ai.ipv4? || ai.send(meth), "ai=#{addr_exp}; ai.ipv4? || .#{meth}")
+	  else
+	    assert(ipv6(addr).send(meth), "#{addr_exp}.#{meth}")
+            assert_equal(addr, ipv6(addr).ip_address)
+	  end
+          list.each {|meth2,|
+            next if meth == meth2
+            assert(!ipv6(addr).send(meth2), "!#{addr_exp}.#{meth2}")
+          }
+        }
+      }
+      mlist.each {|meth, *addrs|
+        addrs.each {|addr|
+          addr_exp = "Addrinfo.getaddrinfo(#{addr.inspect}, nil, :INET6, :DGRAM).fetch(0)"
+          assert(ipv6(addr).send(meth), "#{addr_exp}.#{meth}")
+          assert(ipv6(addr).ipv6_multicast?, "#{addr_exp}.ipv6_multicast?")
+          mlist.each {|meth2,|
+            next if meth == meth2
+            assert(!ipv6(addr).send(meth2), "!#{addr_exp}.#{meth2}")
+          }
+          list.each {|meth2,|
+            next if :ipv6_multicast? == meth2
+            assert(!ipv6(addr).send(meth2), "!#{addr_exp}.#{meth2}")
+          }
+        }
+      }
+    end
+
+    def test_ipv6_to_ipv4
+      ai = Addrinfo.ip("::192.0.2.3")
+      ai = ai.ipv6_to_ipv4 if !ai.ipv4?
+      assert(ai.ipv4?)
+      assert_equal("192.0.2.3", ai.ip_address)
+
+      ai = Addrinfo.ip("::ffff:192.0.2.3")
+      ai = ai.ipv6_to_ipv4 if !ai.ipv4?
+      assert(ai.ipv4?)
+      assert_equal("192.0.2.3", ai.ip_address)
+
+      assert_nil(Addrinfo.ip("::1").ipv6_to_ipv4)
+      assert_nil(Addrinfo.ip("192.0.2.3").ipv6_to_ipv4)
+      if HAS_UNIXSOCKET
+        assert_nil(Addrinfo.unix("/testdir/sock").ipv6_to_ipv4)
+      end
+    end
+  end
+
+  if HAS_UNIXSOCKET
+
+    def test_addrinfo_unix
+      ai = Addrinfo.unix("/testdir/sock")
+      assert_equal("/testdir/sock", Socket.unpack_sockaddr_un(ai))
+      assert_equal(Socket::AF_UNIX, ai.afamily)
+      assert_equal(Socket::PF_UNIX, ai.pfamily)
+      assert_equal(Socket::SOCK_STREAM, ai.socktype)
+      assert_equal(0, ai.protocol)
+    end
+
+    def test_addrinfo_unix_dgram
+      ai = Addrinfo.unix("/testdir/sock", :DGRAM)
+      assert_equal("/testdir/sock", Socket.unpack_sockaddr_un(ai))
+      assert_equal(Socket::AF_UNIX, ai.afamily)
+      assert_equal(Socket::PF_UNIX, ai.pfamily)
+      assert_equal(Socket::SOCK_DGRAM, ai.socktype)
+      assert_equal(0, ai.protocol)
+    end
+
+    def test_addrinfo_unix_path
+      ai = Addrinfo.unix("/testdir/sock1")
+      assert_equal("/testdir/sock1", ai.unix_path)
+    end
+
+    def test_addrinfo_inspect_sockaddr_unix
+      ai = Addrinfo.unix("/testdir/test_addrinfo_inspect_sockaddr_unix")
+      assert_equal("/testdir/test_addrinfo_inspect_sockaddr_unix", ai.inspect_sockaddr)
+    end
+
+    def test_addrinfo_new_unix
+      ai = Addrinfo.new(["AF_UNIX", "/testdir/sock"])
+      assert_equal("/testdir/sock", Socket.unpack_sockaddr_un(ai))
+      assert_equal(Socket::AF_UNIX, ai.afamily)
+      assert_equal(Socket::PF_UNIX, ai.pfamily)
+      assert_equal(Socket::SOCK_STREAM, ai.socktype) # UNIXSocket/UNIXServer is SOCK_STREAM only.
+      assert_equal(0, ai.protocol)
+    end
+
+    def test_addrinfo_predicates_unix
+      unix_ai = Addrinfo.new(Socket.sockaddr_un("/testdir/sososo"))
+      assert(!unix_ai.ip?)
+      assert(!unix_ai.ipv4?)
+      assert(!unix_ai.ipv6?)
+      assert(unix_ai.unix?)
+    end
+
+    def test_marshal_unix
+      ai1 = Addrinfo.unix("/testdir/sock")
+      ai2 = Marshal.load(Marshal.dump(ai1))
+      assert_equal(ai1.afamily, ai2.afamily)
+      assert_equal(ai1.unix_path, ai2.unix_path)
+      assert_equal(ai1.pfamily, ai2.pfamily)
+      assert_equal(ai1.socktype, ai2.socktype)
+      assert_equal(ai1.protocol, ai2.protocol)
+      assert_equal(ai1.canonname, ai2.canonname)
+    end
+
+  end
+end