Use separate temp directories for separate tests.

Makes unit tests for the previous commit work even when not run alone.
Should have done this from the beginning, but didn't find the trick
for getting the module name.

gitosis/test/test_repository.py

@@ -1,7 +1,6 @@
 from nose.tools import eq_ as eq
 
 import os
-import shutil
 
 from gitosis import repository
 
@@ -39,8 +38,6 @@ def test_init_exist_git():
 def test_init_templates():
     tmp = maketemp()
     path = os.path.join(tmp, 'repo.git')
-    if os.path.exists(path):
-        shutil.rmtree(path)
     templatedir = os.path.join(
         os.path.dirname(__file__),
         'mocktemplates',

gitosis/test/util.py

@@ -2,7 +2,9 @@ from nose.tools import eq_ as eq
 
 import errno
 import os
+import shutil
 import stat
+import sys
 
 def mkdir(*a, **kw):
     try:
@@ -16,9 +18,21 @@ def mkdir(*a, **kw):
 def maketemp():
     tmp = os.path.join(os.path.dirname(__file__), 'tmp')
     mkdir(tmp)
-    me = os.path.splitext(os.path.basename(__file__))[0]
-    tmp = os.path.join(tmp, me)
-    mkdir(tmp)
+
+    caller = sys._getframe(1)
+    name = '%s.%s' % (
+        sys._getframe(1).f_globals['__name__'],
+        caller.f_code.co_name,
+        )
+    tmp = os.path.join(tmp, name)
+    try:
+        shutil.rmtree(tmp)
+    except OSError, e:
+        if e.errno == errno.ENOENT:
+            pass
+        else:
+            raise
+    os.mkdir(tmp)
     return tmp
 
 def writeFile(path, content):