Add path module tests.

1 files changed, 17 insertions, 12 deletions

diff --git a/repoze/bfg/path.py b/repoze/bfg/path.py
index c3d914208..6fee43791 100644
--- a/repoze/bfg/path.py
+++ b/repoze/bfg/path.py
@@ -1,19 +1,24 @@
 import os
 import sys
 
-def caller_path(path, level=2):
+def caller_path(path, level=2, package_globals=None): # package_globals==testing
     if not os.path.isabs(path):
-        package_globals = sys._getframe(level).f_globals
-        if '__bfg_abspath__' not in package_globals:
-            # this is actually kinda expensive so we memoize the result
-            package_name = package_globals['__name__']
-            package = sys.modules[package_name]
-            prefix = package_path(package)
-            try:
-                package_globals['__bfg_abspath__'] = prefix
-            except:
-                pass
-        prefix = package_globals['__bfg_abspath__']
+
+        if package_globals is None:
+            package_globals = sys._getframe(level).f_globals
+
+        if '__bfg_abspath__' in package_globals:
+            return os.path.join(package_globals['__bfg_abspath__'], path)
+
+        # computing the abspath is actually kinda expensive so we
+        # memoize the result
+        package_name = package_globals['__name__']
+        package = sys.modules[package_name]
+        prefix = package_path(package)
+        try:
+            package_globals['__bfg_abspath__'] = prefix
+        except:
+            pass
         path = os.path.join(prefix, path)
     return path