Add tests for #link_local?

test/ipaddress/ipv4_test.rb

@@ -74,6 +74,22 @@ class IPv4Test < Minitest::Test
       "10.32.0.1" => ["10.32.0.253", 253],
       "192.0.0.0" => ["192.1.255.255", 131072]
     }
+
+    @link_local = [
+      "169.254.0.0",
+      "169.254.255.255",
+      "169.254.12.34",
+      "169.254.0.0/16",
+      "169.254.0.0/17"]
+    
+    @not_link_local = [
+      "127.0.0.1",
+      "127.0.1.1",
+      "192.168.0.100",
+      "169.255.0.0",
+      "169.254.0.0/15",
+      "0.0.0.0",
+      "255.255.255.255"]
     
   end
 
@@ -309,6 +325,15 @@ class IPv4Test < Minitest::Test
     assert_equal false, @klass.new("192.0.0.2/24").private?
   end
 
+  def test_method_link_local?
+    @link_local.each do |addr|
+      assert_equal true, @klass.new(addr).link_local?
+    end
+    @not_link_local.each do |addr|
+      assert_equal false, @klass.new(addr).link_local?
+    end
+  end
+
   def test_method_octet
     assert_equal 172, @ip[0]
     assert_equal 16, @ip[1]

test/ipaddress/ipv6_test.rb

@@ -44,6 +44,21 @@ class IPv6Test < Minitest::Test
     @network = @klass.new "2001:db8:8:800::/64"
     @arr = [8193,3512,0,0,8,2048,8204,16762]
     @hex = "20010db80000000000080800200c417a"
+
+    @link_local = [
+      "fe80::",
+      "fe80::1",
+      "fe80::208:74ff:feda:625c",
+      "fe80::/64",
+      "fe80::/65"]
+    
+    @not_link_local = [
+      "::",
+      "::1",
+      "ff80:03:02:01::",
+      "2001:db8::8:800:200c:417a",
+      "fe80::/63"]
+    
   end
   
   def test_attribute_address
@@ -216,6 +231,15 @@ class IPv6Test < Minitest::Test
     assert_equal false, @ip.loopback?        
   end
 
+  def test_method_link_local?
+    @link_local.each do |addr|
+      assert_equal true, @klass.new(addr).link_local?
+    end
+    @not_link_local.each do |addr|
+      assert_equal false, @klass.new(addr).link_local?
+    end
+  end
+
   def test_method_network
     @networks.each do |addr,net|
       ip = @klass.new addr