Follow up on #114: update tests for multicast? and link_local_multicast?

Author: taketo1113

test/test_ipaddr.rb

@@ -624,48 +624,51 @@ def test_link_local?
   end
 
   def test_multicast?
+    assert_equal(true, IPAddr.new('224.0.0.0').multicast?)
+    assert_equal(true, IPAddr.new('225.0.0.0').multicast?)
+    assert_equal(true, IPAddr.new('224.0.0.0/4').multicast?)
+
+    assert_equal(false, IPAddr.new('240.0.0.0').multicast?)
+    assert_equal(false, IPAddr.new('240.0.0.0/4').multicast?)
     assert_equal(false, IPAddr.new('192.168.0.0').multicast?)
-    assert_equal(false,  IPAddr.new('169.254.1.1').multicast?)
-    assert_equal(false,  IPAddr.new('169.254.254.255').multicast?)
+    assert_equal(false, IPAddr.new('169.254.1.1').multicast?)
+    assert_equal(false, IPAddr.new('169.254.254.255').multicast?)
 
-    # notable ipv4 multicast addresses
-    assert_equal(true, IPAddr.new('224.0.0.0').multicast?)
-    assert_equal(true, IPAddr.new('224.0.0.1').multicast?)
-    assert_equal(true, IPAddr.new('224.0.0.6').multicast?)
-    assert_equal(true, IPAddr.new('224.0.1.41').multicast?)
-    assert_equal(true, IPAddr.new('224.0.1.129').multicast?)
-    assert_equal(true, IPAddr.new('224.0.23.12').multicast?)
-    assert_equal(true, IPAddr.new('239.255.255.250').multicast?)
-    assert_equal(true, IPAddr.new('239.255.255.253').multicast?)
+    assert_equal(true, IPAddr.new('ff00::').multicast?)
+    assert_equal(true, IPAddr.new('ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff').multicast?)
+    assert_equal(true, IPAddr.new('ff00::/8').multicast?)
 
+    assert_equal(false, IPAddr.new('feff::').multicast?)
+    assert_equal(false, IPAddr.new('feff:ffff:ffff:ffff:ffff:ffff:ffff:ffff').multicast?)
+    assert_equal(false, IPAddr.new('fe00::/8').multicast?)
     assert_equal(false, IPAddr.new('::1').multicast?)
     assert_equal(false, IPAddr.new('::').multicast?)
-    assert_equal(false, IPAddr.new('fb84:8bf7:e905::1').multicast?)
 
-    # notable ipv6 multicast addresses
-    assert_equal(true,  IPAddr.new('ff02::1').multicast?)
-    assert_equal(true,  IPAddr.new('ff02::2').multicast?)
-    assert_equal(true,  IPAddr.new('ff02::5').multicast?)
-    assert_equal(true,  IPAddr.new('ff02::6').multicast?)
-    assert_equal(true,  IPAddr.new('ff02::8').multicast?)
-    assert_equal(true,  IPAddr.new('ff02::1:2').multicast?)
-    assert_equal(true,  IPAddr.new('ff02::1:3').multicast?)
-    assert_equal(true,  IPAddr.new('ff05::101').multicast?)
+    assert_equal(true, IPAddr.new('::ffff:224.0.0.0').multicast?)
+    assert_equal(false, IPAddr.new('::ffff:240.0.0.0').multicast?)
   end
 
   def test_link_local_multicast?
+    assert_equal(true, IPAddr.new('224.0.0.0').link_local_multicast?)
+    assert_equal(true, IPAddr.new('224.0.0.0/24').link_local_multicast?)
+
+    assert_equal(false, IPAddr.new('225.0.0.0').link_local_multicast?)
+    assert_equal(false, IPAddr.new('225.0.0.0/24').link_local_multicast?)
     assert_equal(false, IPAddr.new('192.168.0.0').link_local_multicast?)
-    assert_equal(false,  IPAddr.new('169.254.1.1').link_local_multicast?)
-    assert_equal(false,  IPAddr.new('169.254.254.255').link_local_multicast?)
-    assert_equal(false,  IPAddr.new('239.0.0.0').link_local_multicast?)
+    assert_equal(false, IPAddr.new('169.254.1.1').link_local_multicast?)
+    assert_equal(false, IPAddr.new('169.254.254.255').link_local_multicast?)
 
-    assert_equal(true, IPAddr.new('224.0.0.0').link_local_multicast?)
+    assert_equal(true, IPAddr.new('ff02::1').link_local_multicast?)
+    assert_equal(true, IPAddr.new('ff02::/16').link_local_multicast?)
 
+    assert_equal(false, IPAddr.new('ff00::').link_local_multicast?)
+    assert_equal(false, IPAddr.new('ff03::1').link_local_multicast?)
+    assert_equal(false, IPAddr.new('ff03::/16').link_local_multicast?)
     assert_equal(false, IPAddr.new('::1').link_local_multicast?)
     assert_equal(false, IPAddr.new('::').link_local_multicast?)
-    assert_equal(false,  IPAddr.new('ff05::1').link_local_multicast?)
-    assert_equal(true,  IPAddr.new('ff02::1').link_local_multicast?)
-    assert_equal(true,  IPAddr.new('ff02::2').link_local_multicast?)
+
+    assert_equal(true, IPAddr.new('::ffff:224.0.0.0').link_local_multicast?)
+    assert_equal(false, IPAddr.new('::ffff:225.0.0.0').link_local_multicast?)
   end
 
   def test_hash