handle ruby-style Module::Class names

Ruby uses "::" to separate modules from classes, while python uses "."
so we'll sniff the queued class name for "::" and if it's there then
we're probably handling a job that was queued by Ruby.

Author: toby cabot

pyres/__init__.py

@@ -86,7 +86,14 @@ def my_import(name):
 
 def safe_str_to_class(s):
     """Helper function to map string class names to module classes."""
-    lst = s.split(".")
+    # ruby compatibility kludge: ruby uses "::" to separate modules
+    # from classes, while python uses "." so we'll sniff the string
+    # for "::" and if it's there then we're probably handling a job
+    # that was queued by ruby
+    if "::" in s:
+        lst = s.split("::")
+    else:
+        lst = s.split(".")
     klass = lst[-1]
     mod_list = lst[:-1]
     module = ".".join(mod_list)

tests/__init__.py

@@ -119,6 +119,8 @@ def test_safe_str_to_class(self):
         assert safe_str_to_class('tests.Basic') == Basic
         self.assertRaises(ImportError, safe_str_to_class, 'test.Mine')
         self.assertRaises(ImportError, safe_str_to_class, 'tests.World')
+        # test that we can handle Ruby-compatible Module::Class names
+        assert safe_str_to_class('tests::Basic') == Basic
         # test that we'll use the class name as a module name if no
         # module name is provided (for Ruby compatibility)
         assert safe_str_to_class('tests') == tests