apply r64239 to macOS too

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64241 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

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

@@ -156,7 +156,7 @@ describe 'BasicSocket#recvmsg_nonblock' do
 
           describe 'the returned Array' do
             before do
-              platform_is(:freebsd) { IO.select([@socket]) }
+              platform_is(:darwin, :freebsd) { IO.select([@socket]) }
               @array = @socket.recvmsg_nonblock
             end
 

spec/ruby/library/socket/constants/constants_spec.rb

@@ -89,10 +89,10 @@ describe "Socket::Constants" do
 
   platform_is_not :windows do
     it 'defines SCM options' do
-      platform_is :freebsd do
+      platform_is :darwin, :freebsd do
         Socket::Constants.should have_constant('SCM_CREDS')
       end
-      platform_is_not :freebsd do
+      platform_is_not :darwin, :freebsd do
         Socket::Constants.should have_constant('SCM_CREDENTIALS')
       end
     end

spec/ruby/library/socket/socket/recvfrom_nonblock_spec.rb

@@ -37,7 +37,7 @@ describe 'Socket#recvfrom_nonblock' do
         before do
           @client.write('hello')
 
-          platform_is(:freebsd) { IO.select([@server]) }
+          platform_is(:darwin, :freebsd) { IO.select([@server]) }
         end
 
         platform_is_not :windows do
@@ -54,7 +54,7 @@ describe 'Socket#recvfrom_nonblock' do
             5.times do
               @client.write('hello')
 
-              platform_is(:freebsd) { IO.select([@server]) }
+              platform_is(:darwin, :freebsd) { IO.select([@server]) }
 
               msg, _ = @server.recvfrom_nonblock(5)
 

spec/ruby/library/socket/udpsocket/recvfrom_nonblock_spec.rb

@@ -41,7 +41,7 @@ describe 'UDPSocket#recvfrom_nonblock' do
           before do
             @client.write('hello')
 
-            platform_is(:freebsd) { IO.select([@server]) }
+            platform_is(:darwin, :freebsd) { IO.select([@server]) }
           end
 
           it 'returns an Array containing the data and an Array' do