Adds a failing test case for 255 unicode code points

The OSM spec says "up to 255 full unicode chars", so we should be able
to handle 255 x 🐼 --- but we don't.

The internal limit is on 255 _bytes_ in the `std::string`, but there can
be up to four bytes in a utf8 encoded code point.

References:
- http://wiki.openstreetmap.org/wiki/API_v0.6#Tags
- http://www.fileformat.info/info/unicode/char/1f43c/browsertest.htm
- https://en.wikipedia.org/wiki/UTF-8#Description

features/testbot/utf.feature

@@ -19,3 +19,18 @@ Feature: Handling of UTF characters
             | a    | b  | Scandinavian København,Scandinavian København |
             | b    | c  | Japanese 東京,Japanese 東京                    |
             | c    | d  | Cyrillic Москва,Cyrillic Москва               |
+
+
+    @todo
+    Scenario: Up to 255 Unicode Code Points (255 x Panda Code Point)
+        Given the node map
+            | a | b | c |
+
+        And the ways
+            | nodes | name | highway |
+            | ab    | ab   | primary |
+            | bc    | 🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼 | primary |
+
+        When I route 100 times I should get
+            | from | to | route |
+            | a    | c  | ab,🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼,🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼🐼 |