update(security_test.py): moving tests to new framework

We should be moving tests over to pytest

[none]

path_converters.py

@@ -0,0 +1,34 @@
+from werkzeug.routing import BaseConverter
+
+import features
+
+
+class APIRepositoryPathConverter(BaseConverter):
+  """ Converter for handling repository paths. Does not handle library paths.
+  """
+  def __init__(self, url_map):
+    super(APIRepositoryPathConverter, self).__init__(url_map)
+    self.weight = 200
+    self.regex = r'([^/]+/[^/]+)'
+
+
+class RepositoryPathConverter(BaseConverter):
+  """ Converter for handling repository paths. Handles both library and non-library paths (if
+      configured).
+  """
+  def __init__(self, url_map):
+    super(RepositoryPathConverter, self).__init__(url_map)
+    self.weight = 200
+
+    if features.LIBRARY_SUPPORT:
+      # Allow names without namespaces.
+      self.regex = r'[^/]+(/[^/]+)?'
+    else:
+      self.regex = r'([^/]+/[^/]+)'
+
+
+class RegexConverter(BaseConverter):
+  """ Converter for handling custom regular expression patterns in paths. """
+  def __init__(self, url_map, regex_value):
+    super(RegexConverter, self).__init__(url_map)
+    self.regex = regex_value