x509req: implement X509::Request#==

Author: rhenium

lib/openssl/x509.rb

@@ -204,5 +204,12 @@ def ==(other)
         to_der == other.to_der
       end
     end
+
+    class Request
+      def ==(other)
+        return false unless Request === other
+        to_der == other.to_der
+      end
+    end
   end
 end

test/test_x509req.rb

@@ -141,6 +141,16 @@ def test_dup
     assert_equal(req.to_der, req.dup.to_der)
   end
 
+  def test_eq
+    req1 = issue_csr(0, @dn, @rsa1024, "sha1")
+    req2 = issue_csr(0, @dn, @rsa1024, "sha1")
+    req3 = issue_csr(0, @dn, @rsa1024, "sha256")
+
+    assert_equal false, req1 == 12345
+    assert_equal true, req1 == req2
+    assert_equal false, req1 == req3
+  end
+
   private
 
   def request_error_returns_false