test for exclusions based on ipython_package_dir

IPython/testing/iptest.py

@@ -48,7 +48,7 b' from nose.core import TestProgram'
 
 # Our own imports
 from IPython.utils.importstring import import_item
-from IPython.utils.path import get_ipython_module_path
+from IPython.utils.path import get_ipython_module_path, get_ipython_package_dir
 from IPython.utils.process import find_cmd, pycmd2argv
 from IPython.utils.sysinfo import sys_info
 from IPython.utils.warn import warn
@@ -280,8 +280,10 b' def make_exclude():'
         exclusions = [s.replace('\\','\\\\') for s in exclusions]
     
     # check for any exclusions that don't seem to exist:
+    parent, _ = os.path.split(get_ipython_package_dir())
     for exclusion in exclusions:
-        if not os.path.exists(exclusion) and not os.path.exists(exclusion + '.py'):
+        fullpath = pjoin(parent, exclusion)
+        if not os.path.exists(fullpath) and not os.path.exists(fullpath + '.py'):
             warn("Excluding nonexistent file: %r\n" % exclusion)
 
     return exclusions