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Add test utility for parsing test output from stdout/stderr
Add test utility for parsing test output from stdout/stderr

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test_iplib.py
79 lines | 2.9 KiB | text/x-python | PythonLexer
"""Tests for the key iplib module, where the main ipython class is defined.
"""
#-----------------------------------------------------------------------------
# Module imports
#-----------------------------------------------------------------------------
# stdlib
import os
import shutil
import tempfile
# third party
import nose.tools as nt
# our own packages
from IPython import ipapi, iplib
#-----------------------------------------------------------------------------
# Globals
#-----------------------------------------------------------------------------
# Useful global ipapi object and main IPython one. Unfortunately we have a
# long precedent of carrying the 'ipapi' global object which is injected into
# the system namespace as _ip, but that keeps a pointer to the actual IPython
# InteractiveShell instance, which is named IP. Since in testing we do need
# access to the real thing (we want to probe beyond what ipapi exposes), make
# here a global reference to each. In general, things that are exposed by the
# ipapi instance should be read from there, but we also will often need to use
# the actual IPython one.
# Get the public instance of IPython, and if it's None, make one so we can use
# it for testing
ip = ipapi.get()
if ip is None:
# IPython not running yet, make one from the testing machinery for
# consistency when the test suite is being run via iptest
from IPython.testing.plugin import ipdoctest
ip = ipapi.get()
IP = ip.IP # This is the actual IPython shell 'raw' object.
#-----------------------------------------------------------------------------
# Test functions
#-----------------------------------------------------------------------------
def test_reset():
"""reset must clear most namespaces."""
IP.reset() # first, it should run without error
# Then, check that most namespaces end up empty
for ns in IP.ns_refs_table:
if ns is IP.user_ns:
# The user namespace is reset with some data, so we can't check for
# it being empty
continue
nt.assert_equals(len(ns),0)
# make sure that user_setup can be run re-entrantly in 'install' mode.
def test_user_setup():
# use a lambda to pass kwargs to the generator
user_setup = lambda a,k: iplib.user_setup(*a,**k)
kw = dict(mode='install', interactive=False)
# Call the user setup and verify that the directory exists
yield user_setup, (ip.options.ipythondir,''), kw
yield os.path.isdir, ip.options.ipythondir
# Now repeat the operation with a non-existent directory. Check both that
# the call succeeds and that the directory is created.
tmpdir = tempfile.mktemp(prefix='ipython-test-')
# Use a try with an empty except because try/finally doesn't work with a
# yield in Python 2.4.
try:
yield user_setup, (tmpdir,''), kw
yield os.path.isdir, tmpdir
except:
pass
# Clean up the temp dir once done
shutil.rmtree(tmpdir)