Fix a problem with the test loader finding the bundled doctest's

TestCase subclasses and trying to run them, too.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4043425

setuptools/command/test.py

@@ -13,8 +13,9 @@ class ScanningLoader(TestLoader):
         If the module has an ``additional_tests`` function, call it and add
         the return value to the tests.
         """
-
-        tests = [TestLoader.loadTestsFromModule(self,module)]
+        tests = []
+        if module.__name__!='setuptools.tests.doctest':  # ugh
+            tests.append(TestLoader.loadTestsFromModule(self,module))
 
         if hasattr(module, "additional_tests"):
             tests.append(module.additional_tests())
@@ -32,13 +33,12 @@ class ScanningLoader(TestLoader):
                         continue
                 tests.append(self.loadTestsFromName(submodule))
 
-        if len(tests)>1:
+        if len(tests)!=1:
             return self.suiteClass(tests)
         else:
             return tests[0] # don't create a nested suite for only one return
 
 
-
 class test(Command):
 
     """Command to run unit tests after in-place build"""