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# encoding: utf-8
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"""Tests for genutils.py"""
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__docformat__ = "restructuredtext en"
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#-----------------------------------------------------------------------------
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# Copyright (C) 2008 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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# stdlib
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import os
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import shutil
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import sys
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import tempfile
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from os.path import join, abspath, split
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# third-party
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import nose.tools as nt
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from nose import with_setup
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from nose.tools import raises
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# Our own
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import IPython
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from IPython import genutils
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from IPython.testing.decorators import skipif, skip_if_not_win32
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# Platform-dependent imports
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try:
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import _winreg as wreg
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except ImportError:
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#Fake _winreg module on none windows platforms
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import new
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sys.modules["_winreg"] = new.module("_winreg")
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import _winreg as wreg
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#Add entries that needs to be stubbed by the testing code
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(wreg.OpenKey, wreg.QueryValueEx,) = (None, None)
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#-----------------------------------------------------------------------------
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# Globals
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#-----------------------------------------------------------------------------
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env = os.environ
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TEST_FILE_PATH = split(abspath(__file__))[0]
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TMP_TEST_DIR = tempfile.mkdtemp()
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HOME_TEST_DIR = join(TMP_TEST_DIR, "home_test_dir")
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IP_TEST_DIR = join(HOME_TEST_DIR,'_ipython')
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#
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# Setup/teardown functions/decorators
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#
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def setup():
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"""Setup testenvironment for the module:
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- Adds dummy home dir tree
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"""
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# Do not mask exceptions here. In particular, catching WindowsError is a
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# problem because that exception is only defined on Windows...
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os.makedirs(IP_TEST_DIR)
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def teardown():
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"""Teardown testenvironment for the module:
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- Remove dummy home dir tree
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"""
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# Note: we remove the parent test dir, which is the root of all test
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# subdirs we may have created. Use shutil instead of os.removedirs, so
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# that non-empty directories are all recursively removed.
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shutil.rmtree(TMP_TEST_DIR)
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def setup_environment():
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"""Setup testenvironment for some functions that are tested
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in this module. In particular this functions stores attributes
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and other things that we need to stub in some test functions.
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This needs to be done on a function level and not module level because
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each testfunction needs a pristine environment.
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"""
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global oldstuff, platformstuff
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oldstuff = (env.copy(), os.name, genutils.get_home_dir, IPython.__file__,)
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if os.name == 'nt':
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platformstuff = (wreg.OpenKey, wreg.QueryValueEx,)
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if 'IPYTHONDIR' in env:
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del env['IPYTHONDIR']
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def teardown_environment():
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"""Restore things that were remebered by the setup_environment function
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"""
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(oldenv, os.name, genutils.get_home_dir, IPython.__file__,) = oldstuff
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for key in env.keys():
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if key not in oldenv:
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del env[key]
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env.update(oldenv)
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if hasattr(sys, 'frozen'):
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del sys.frozen
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if os.name == 'nt':
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(wreg.OpenKey, wreg.QueryValueEx,) = platformstuff
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# Build decorator that uses the setup_environment/setup_environment
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with_enivronment = with_setup(setup_environment, teardown_environment)
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#
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# Tests for get_home_dir
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#
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@skip_if_not_win32
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@with_enivronment
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def test_get_home_dir_1():
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"""Testcase for py2exe logic, un-compressed lib
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"""
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sys.frozen = True
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#fake filename for IPython.__init__
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IPython.__file__ = abspath(join(HOME_TEST_DIR, "Lib/IPython/__init__.py"))
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home_dir = genutils.get_home_dir()
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nt.assert_equal(home_dir, abspath(HOME_TEST_DIR))
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@skip_if_not_win32
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@with_enivronment
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def test_get_home_dir_2():
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"""Testcase for py2exe logic, compressed lib
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"""
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sys.frozen = True
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#fake filename for IPython.__init__
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IPython.__file__ = abspath(join(HOME_TEST_DIR, "Library.zip/IPython/__init__.py")).lower()
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home_dir = genutils.get_home_dir()
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nt.assert_equal(home_dir, abspath(HOME_TEST_DIR).lower())
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@with_enivronment
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def test_get_home_dir_3():
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"""Testcase $HOME is set, then use its value as home directory."""
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env["HOME"] = HOME_TEST_DIR
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home_dir = genutils.get_home_dir()
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nt.assert_equal(home_dir, env["HOME"])
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@with_enivronment
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def test_get_home_dir_4():
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"""Testcase $HOME is not set, os=='poix'.
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This should fail with HomeDirError"""
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os.name = 'posix'
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if 'HOME' in env: del env['HOME']
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nt.assert_raises(genutils.HomeDirError, genutils.get_home_dir)
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@skip_if_not_win32
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@with_enivronment
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def test_get_home_dir_5():
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"""Testcase $HOME is not set, os=='nt'
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env['HOMEDRIVE'],env['HOMEPATH'] points to path."""
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os.name = 'nt'
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if 'HOME' in env: del env['HOME']
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env['HOMEDRIVE'], env['HOMEPATH'] = os.path.splitdrive(HOME_TEST_DIR)
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home_dir = genutils.get_home_dir()
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nt.assert_equal(home_dir, abspath(HOME_TEST_DIR))
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@skip_if_not_win32
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@with_enivronment
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def test_get_home_dir_6():
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"""Testcase $HOME is not set, os=='nt'
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env['HOMEDRIVE'],env['HOMEPATH'] do not point to path.
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env['USERPROFILE'] points to path
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"""
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os.name = 'nt'
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if 'HOME' in env: del env['HOME']
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env['HOMEDRIVE'], env['HOMEPATH'] = os.path.abspath(TEST_FILE_PATH), "DOES NOT EXIST"
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env["USERPROFILE"] = abspath(HOME_TEST_DIR)
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home_dir = genutils.get_home_dir()
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nt.assert_equal(home_dir, abspath(HOME_TEST_DIR))
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# Should we stub wreg fully so we can run the test on all platforms?
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@skip_if_not_win32
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@with_enivronment
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def test_get_home_dir_7():
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"""Testcase $HOME is not set, os=='nt'
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env['HOMEDRIVE'],env['HOMEPATH'], env['USERPROFILE'] missing
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"""
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os.name = 'nt'
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if 'HOME' in env: del env['HOME']
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if 'HOMEDRIVE' in env: del env['HOMEDRIVE']
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#Stub windows registry functions
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def OpenKey(x, y):
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class key:
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def Close(self):
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pass
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return key()
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def QueryValueEx(x, y):
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return [abspath(HOME_TEST_DIR)]
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wreg.OpenKey = OpenKey
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wreg.QueryValueEx = QueryValueEx
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home_dir = genutils.get_home_dir()
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nt.assert_equal(home_dir, abspath(HOME_TEST_DIR))
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#
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# Tests for get_ipython_dir
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#
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@with_enivronment
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def test_get_ipython_dir_1():
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"""test_get_ipython_dir_1, Testcase to see if we can call get_ipython_dir without Exceptions."""
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env['IPYTHONDIR'] = "someplace/.ipython"
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ipdir = genutils.get_ipython_dir()
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nt.assert_equal(ipdir, os.path.abspath("someplace/.ipython"))
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@with_enivronment
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def test_get_ipython_dir_2():
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"""test_get_ipython_dir_2, Testcase to see if we can call get_ipython_dir without Exceptions."""
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genutils.get_home_dir = lambda : "someplace"
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os.name = "posix"
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ipdir = genutils.get_ipython_dir()
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nt.assert_equal(ipdir, os.path.abspath(os.path.join("someplace", ".ipython")))
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@with_enivronment
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def test_get_ipython_dir_3():
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"""test_get_ipython_dir_3, Testcase to see if we can call get_ipython_dir without Exceptions."""
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genutils.get_home_dir = lambda : "someplace"
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os.name = "nt"
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ipdir = genutils.get_ipython_dir()
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nt.assert_equal(ipdir, os.path.abspath(os.path.join("someplace", "_ipython")))
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#
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# Tests for get_security_dir
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#
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@with_enivronment
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def test_get_security_dir():
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"""Testcase to see if we can call get_security_dir without Exceptions."""
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sdir = genutils.get_security_dir()
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#
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# Tests for get_log_dir
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#
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@with_enivronment
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def test_get_log_dir():
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"""Testcase to see if we can call get_log_dir without Exceptions."""
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sdir = genutils.get_log_dir()
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#
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# Tests for popkey
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#
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def test_popkey_1():
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"""test_popkey_1, Basic usage test of popkey
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"""
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dct = dict(a=1, b=2, c=3)
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nt.assert_equal(genutils.popkey(dct, "a"), 1)
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nt.assert_equal(dct, dict(b=2, c=3))
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nt.assert_equal(genutils.popkey(dct, "b"), 2)
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nt.assert_equal(dct, dict(c=3))
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nt.assert_equal(genutils.popkey(dct, "c"), 3)
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nt.assert_equal(dct, dict())
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def test_popkey_2():
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"""test_popkey_2, Test to see that popkey of non occuring keys
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generates a KeyError exception
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"""
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dct = dict(a=1, b=2, c=3)
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nt.assert_raises(KeyError, genutils.popkey, dct, "d")
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def test_popkey_3():
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"""test_popkey_3, Tests to see that popkey calls returns the correct value
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and that the key/value was removed from the dict.
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"""
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dct = dict(a=1, b=2, c=3)
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nt.assert_equal(genutils.popkey(dct, "A", 13), 13)
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nt.assert_equal(dct, dict(a=1, b=2, c=3))
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nt.assert_equal(genutils.popkey(dct, "B", 14), 14)
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nt.assert_equal(dct, dict(a=1, b=2, c=3))
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nt.assert_equal(genutils.popkey(dct, "C", 15), 15)
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nt.assert_equal(dct, dict(a=1, b=2, c=3))
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nt.assert_equal(genutils.popkey(dct, "a"), 1)
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nt.assert_equal(dct, dict(b=2, c=3))
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nt.assert_equal(genutils.popkey(dct, "b"), 2)
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nt.assert_equal(dct, dict(c=3))
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nt.assert_equal(genutils.popkey(dct, "c"), 3)
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nt.assert_equal(dct, dict())
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def test_filefind():
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"""Various tests for filefind"""
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f = tempfile.NamedTemporaryFile()
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print 'fname:',f.name
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alt_dirs = genutils.get_ipython_dir()
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t = genutils.filefind(f.name,alt_dirs)
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print 'found:',t
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