Add platform guards for AIX

* Most of these seem OS bugs.
* See https://rubyci.org/logs/rubyci.s3.amazonaws.com/aix71_ppc/ruby-trunk/log/20180905T103302Z.fail.html.gz

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64644 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/library/socket/addrinfo/ipv6_linklocal_spec.rb

@@ -2,12 +2,14 @@ require_relative '../spec_helper'
 
 guard -> { SocketSpecs.ipv6_available? } do
   describe 'Addrinfo#ipv6_linklocal?' do
+    platform_is_not :aix do
       it 'returns true for a link-local address' do
         Addrinfo.ip('fe80::').ipv6_linklocal?.should == true
         Addrinfo.ip('fe81::').ipv6_linklocal?.should == true
         Addrinfo.ip('fe8f::').ipv6_linklocal?.should == true
         Addrinfo.ip('fe80::1').ipv6_linklocal?.should == true
       end
+    end
 
     it 'returns false for a regular address' do
       Addrinfo.ip('::1').ipv6_linklocal?.should == false

spec/ruby/library/socket/addrinfo/ipv6_sitelocal_spec.rb

@@ -2,12 +2,14 @@ require_relative '../spec_helper'
 
 guard -> { SocketSpecs.ipv6_available? } do
   describe 'Addrinfo#ipv6_sitelocal?' do
+    platform_is_not :aix do
       it 'returns true for a site-local address' do
         Addrinfo.ip('feef::').ipv6_sitelocal?.should == true
         Addrinfo.ip('fee0::').ipv6_sitelocal?.should == true
         Addrinfo.ip('fee2::').ipv6_sitelocal?.should == true
         Addrinfo.ip('feef::1').ipv6_sitelocal?.should == true
       end
+    end
 
     it 'returns false for a regular IPv6 address' do
       Addrinfo.ip('::1').ipv6_sitelocal?.should == false

spec/ruby/library/socket/addrinfo/ipv6_to_ipv4_spec.rb

@@ -11,6 +11,7 @@ guard -> { SocketSpecs.ipv6_available? } do
       addr.ip_address.should == '192.168.1.1'
     end
 
+    platform_is_not :aix do
       it 'returns an Addrinfo for ::0.0.1.1' do
         addr = Addrinfo.ip('::0.0.1.1').ipv6_to_ipv4
 
@@ -37,6 +38,7 @@ guard -> { SocketSpecs.ipv6_available? } do
         addr.afamily.should    == Socket::AF_INET
         addr.ip_address.should == '0.1.0.0'
       end
+    end
 
     it 'returns an Addrinfo for ::ffff:192.168.1.1' do
       addr = Addrinfo.ip('::ffff:192.168.1.1').ipv6_to_ipv4

spec/ruby/library/socket/basicsocket/connect_address_spec.rb

@@ -95,6 +95,7 @@ describe 'Socket#connect_address' do
   end
 
   with_feature :unix_socket do
+    platform_is_not :aix do
       describe 'using an unbound UNIX socket' do
         before do
           @path = SocketSpecs.socket_path
@@ -112,6 +113,7 @@ describe 'Socket#connect_address' do
           lambda { @client.connect_address }.should raise_error(SocketError)
         end
       end
+    end
 
     describe 'using a bound UNIX socket' do
       before do

spec/ruby/library/socket/socket/gethostbyaddr_spec.rb

@@ -62,7 +62,7 @@ describe 'Socket.gethostbyaddr' do
     end
   end
 
-  guard -> { SocketSpecs.ipv6_available? } do
+  guard -> { SocketSpecs.ipv6_available? && platform_is_not(:aix) } do
     describe 'using an IPv6 address' do
       before do
         @addr = IPAddr.new('::1').hton

spec/ruby/library/socket/unixsocket/local_address_spec.rb

@@ -21,6 +21,7 @@ with_feature :unix_socket do
     end
 
     describe 'the returned Addrinfo' do
+      platform_is_not :aix do
         it 'uses AF_UNIX as the address family' do
           @client.local_address.afamily.should == Socket::AF_UNIX
         end
@@ -28,14 +29,17 @@ with_feature :unix_socket do
         it 'uses PF_UNIX as the protocol family' do
           @client.local_address.pfamily.should == Socket::PF_UNIX
         end
+      end
 
       it 'uses SOCK_STREAM as the socket type' do
         @client.local_address.socktype.should == Socket::SOCK_STREAM
       end
 
+      platform_is_not :aix do
         it 'uses an empty socket path' do
           @client.local_address.unix_path.should == ''
         end
+      end
 
       it 'uses 0 as the protocol' do
         @client.local_address.protocol.should == 0