added a test case for reverse.

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@996 e5f2f494-b856-4b98-b285-d166d9295462

src/lib/dns/cpp/tests/name_unittest.cc

@@ -472,6 +472,8 @@ TEST_F(NameTest, reverse)
 {
     EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, example_name.reverse(),
                         Name("com.example.www."));
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, Name(".").reverse(),
+                        Name("."));
 }
 
 TEST_F(NameTest, split)