1 files changed, 43 insertions, 0 deletions
diff --git a/spec/ruby/library/socket/basicsocket/ioctl_spec.rb b/spec/ruby/library/socket/basicsocket/ioctl_spec.rb
new file mode 100644
index 0000000000..9a7f535317
--- /dev/null
+++ b/spec/ruby/library/socket/basicsocket/ioctl_spec.rb
@@ -0,0 +1,43 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require 'socket'
+
+describe "Socket::BasicSocket#ioctl" do
+  platform_is :linux do
+    it "passes data from and to a String correctly" do
+      s = Socket.new Socket::AF_INET, Socket::SOCK_DGRAM, 0
+      # /usr/include/net/if.h, structure ifreq
+      # The structure is 32 bytes on x86, 40 bytes on x86_64
+      if_name = ['lo'].pack('a16')
+      buffer = if_name + 'z' * 24
+      # SIOCGIFADDR in /usr/include/bits/ioctls.h
+      s.ioctl 0x8915, buffer
+      s.close
+
+      # Interface name should remain unchanged.
+      buffer[0, 16].should == if_name
+      # lo should have an IPv4 address of 127.0.0.1
+      buffer[16, 2].unpack('S!').first.should == Socket::AF_INET
+      buffer[20, 4].should == "\x7f\0\0\x01"
+    end
+  end
+
+  platform_is :freebsd do
+    it "passes data from and to a String correctly" do
+      s = Socket.new Socket::AF_INET, Socket::SOCK_DGRAM, 0
+      # /usr/include/net/if.h, structure ifreq
+      # The structure is 32 bytes on x86, 40 bytes on x86_64
+      if_name = ['lo0'].pack('a16')
+      buffer = if_name + 'z' * 24
+      # SIOCGIFADDR in /usr/include/bits/ioctls.h
+      s.ioctl 0xc0206921, buffer
+      s.close
+
+      # Interface name should remain unchanged.
+      buffer[0, 16].should == if_name
+      # lo should have an IPv4 address of 127.0.0.1
+      buffer[16, 1].unpack('C').first.should == 16
+      buffer[17, 1].unpack('C').first.should == Socket::AF_INET
+      buffer[20, 4].should == "\x7f\0\0\x01"
+    end
+  end
+end