1 files changed, 27 insertions, 0 deletions
diff --git a/spec/ruby/library/ipaddr/reverse_spec.rb b/spec/ruby/library/ipaddr/reverse_spec.rb
new file mode 100644
index 0000000000..9bda60ca70
--- /dev/null
+++ b/spec/ruby/library/ipaddr/reverse_spec.rb
@@ -0,0 +1,27 @@
+require_relative '../../spec_helper'
+require 'ipaddr'
+
+describe "IPAddr#reverse" do
+  it "generates the reverse DNS lookup entry" do
+    IPAddr.new("3ffe:505:2::f").reverse.should == "f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.0.5.0.5.0.e.f.f.3.ip6.arpa"
+    IPAddr.new("192.168.2.1").reverse.should == "1.2.168.192.in-addr.arpa"
+  end
+end
+
+describe "IPAddr#ip6_arpa" do
+  it "converts an IPv6 address into the reverse DNS lookup representation according to RFC3172" do
+    IPAddr.new("3ffe:505:2::f").ip6_arpa.should == "f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.0.5.0.5.0.e.f.f.3.ip6.arpa"
+    ->{
+      IPAddr.new("192.168.2.1").ip6_arpa
+    }.should.raise(ArgumentError)
+  end
+end
+
+describe "IPAddr#ip6_int" do
+  it "converts an IPv6 address into the reverse DNS lookup representation according to RFC1886" do
+    IPAddr.new("3ffe:505:2::f").ip6_int.should == "f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.0.5.0.5.0.e.f.f.3.ip6.int"
+    ->{
+      IPAddr.new("192.168.2.1").ip6_int
+    }.should.raise(ArgumentError)
+  end
+end