rtutil: Fix parsing server URLs that include /REST/.

conservancy_beancount/rtutil.py

@@ -50,7 +50,7 @@ class RT:
         self.rt = rt_client
         urlparts = urlparse.urlparse(rt_client.url)
         try:
-            index = urlparts.path.index('/REST/')
+            index = urlparts.path.rindex('/REST/')
         except ValueError:
             base_path = urlparts.path.rstrip('/') + '/'
         else:

tests/test_rtutil.py

@@ -121,3 +121,9 @@ def test_exists_caches(new_client):
 ])
 def test_parse(rt, link, expected):
     assert rt.parse(link) == expected
+
+def test_uncommon_server_url_parsing():
+    url = 'https://example.org/REST/1.0/'
+    client = testutil.RTClient(url + 'REST/1.0/')
+    rt = rtutil.RT(client)
+    assert rt.url(1).startswith(url)