Refactor comoon code. URLCodec test coverage now 100%/100%.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@797671 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/test/org/apache/commons/codec/net/URLCodecTest.java

@@ -138,13 +138,21 @@ public void testDecodeInvalid() throws Exception {
             fail("DecoderException should have been thrown");
         } catch (DecoderException e) {
             // Expected. Move on
-        }
+        }        
         try {
+            // Bad 1st char after %
             urlCodec.decode("%WW");
             fail("DecoderException should have been thrown");
         } catch (DecoderException e) {
             // Expected. Move on
         }
+        try {
+            // Bad 2nd char after %
+            urlCodec.decode("%0W");
+            fail("DecoderException should have been thrown");
+        } catch (DecoderException e) {
+            // Expected. Move on
+        }
         this.validateState(urlCodec);
     }