Option for testing local copy, rather than global. Testing needs more work.

IPython/testing/tools.py

@@ -48,6 +48,9 b' from IPython.utils.io import temp_pyfile'
 
 from . import decorators as dec
 
+# Set to True to test ipython.py in the local directory.
+LOCALTEST = False
+
 #-----------------------------------------------------------------------------
 # Globals
 #-----------------------------------------------------------------------------
@@ -200,6 +203,9 b' def ipexec(fname, options=None):'
     _ip = get_ipython()
     test_dir = os.path.dirname(__file__)
 
+    if LOCALTEST:
+        ipython_cmd = os.path.join(os.getcwd(),'ipython.py')
+    else:
     ipython_cmd = find_cmd('ipython')
     # Absolute path for filename
     full_fname = os.path.join(test_dir, fname)