/usr/lib/python2.7/dist-packages/traits/etsconfig/tests/test_etsconfig.py is in python-traits 4.6.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Standard library imports.
import contextlib
import os
import shutil
import sys
import tempfile
import time
if sys.version_info[:2] == (2, 6):
import unittest2 as unittest
else:
import unittest
# Enthought library imports.
from traits.etsconfig.etsconfig import ETSConfig, ETSToolkitError
@contextlib.contextmanager
def temporary_directory():
"""
Context manager to create and clean up a temporary directory.
"""
temp_dir = tempfile.mkdtemp()
try:
yield temp_dir
finally:
shutil.rmtree(temp_dir)
@contextlib.contextmanager
def restore_mapping_entry(mapping, key):
"""
Context manager that restores a mapping entry to its previous
state on exit.
"""
missing = object()
old_value = mapping.get(key, missing)
try:
yield
finally:
if old_value is missing:
mapping.pop(key, None)
else:
mapping[key] = old_value
@contextlib.contextmanager
def temporary_home_directory():
"""
Context manager that temporarily remaps HOME / APPDATA
to a temporary directory.
"""
# Use the same recipe as in ETSConfig._initialize_application_data
# to determine the home directory.
home_var = 'APPDATA' if sys.platform == 'win32' else 'HOME'
with temporary_directory() as temp_home:
with restore_mapping_entry(os.environ, home_var):
os.environ[home_var] = temp_home
yield
@contextlib.contextmanager
def mock_sys_argv(args):
old_args = sys.argv
sys.argv = args
try:
yield
finally:
sys.argv = old_args
@contextlib.contextmanager
def mock_os_environ(args):
old_environ = os.environ
os.environ = args
try:
yield
finally:
os.environ = old_environ
class ETSConfigTestCase(unittest.TestCase):
""" Tests the 'ETSConfig' configuration object. """
###########################################################################
# 'TestCase' interface.
###########################################################################
#### public methods #######################################################
def setUp(self):
"""
Prepares the test fixture before each test method is called.
"""
# Make a fresh instance each time.
self.ETSConfig = type(ETSConfig)()
def run(self, result=None):
# Extend TestCase.run to use a temporary home directory.
with temporary_home_directory():
super(ETSConfigTestCase, self).run(result)
###########################################################################
# 'ETSConfigTestCase' interface.
###########################################################################
#### public methods #######################################################
def test_application_data(self):
"""
application data
"""
dirname = self.ETSConfig.application_data
self.assertEqual(os.path.exists(dirname), True)
self.assertEqual(os.path.isdir(dirname), True)
return
def test_set_application_data(self):
"""
set application data
"""
old = self.ETSConfig.application_data
self.ETSConfig.application_data = 'foo'
self.assertEqual('foo', self.ETSConfig.application_data)
self.ETSConfig.application_data = old
self.assertEqual(old, self.ETSConfig.application_data)
return
def test_application_data_is_idempotent(self):
"""
application data is idempotent
"""
# Just do the previous test again!
self.test_application_data()
self.test_application_data()
return
def test_write_to_application_data_directory(self):
"""
write to application data directory
"""
self.ETSConfig.company = 'Blah'
dirname = self.ETSConfig.application_data
path = os.path.join(dirname, 'dummy.txt')
data = str(time.time())
f = open(path, 'w')
f.write(data)
f.close()
self.assertEqual(os.path.exists(path), True)
f = open(path)
result = f.read()
f.close()
os.remove(path)
self.assertEqual(data, result)
return
def test_default_company(self):
"""
default company
"""
self.assertEqual(self.ETSConfig.company, 'Enthought')
return
def test_set_company(self):
"""
set company
"""
old = self.ETSConfig.company
self.ETSConfig.company = 'foo'
self.assertEqual('foo', self.ETSConfig.company)
self.ETSConfig.company = old
self.assertEqual(old, self.ETSConfig.company)
return
def _test_default_application_home(self):
"""
application home
"""
# This test is only valid when run with the 'main' at the end of this
# file: "python app_dat_locator_test_case.py", in which case the
# app_name will be the directory this file is in ('tests').
app_home = self.ETSConfig.application_home
(dirname, app_name) = os.path.split(app_home)
self.assertEqual(dirname, self.ETSConfig.application_data)
self.assertEqual(app_name, 'tests')
def test_toolkit_environ(self):
test_args = ['something']
test_environ = {'ETS_TOOLKIT': 'test'}
with mock_sys_argv(test_args):
with mock_os_environ(test_environ):
toolkit = self.ETSConfig.toolkit
self.assertEqual(toolkit, 'test')
def test_toolkit_environ_missing(self):
test_args = ['something']
test_environ = {}
with mock_sys_argv(test_args):
with mock_os_environ(test_environ):
toolkit = self.ETSConfig.toolkit
self.assertEqual(toolkit, '')
def test_set_toolkit(self):
test_args = []
test_environ = {'ETS_TOOLKIT': 'test_environ'}
with mock_sys_argv(test_args):
with mock_os_environ(test_environ):
self.ETSConfig.toolkit = 'test_direct'
toolkit = self.ETSConfig.toolkit
self.assertEqual(toolkit, 'test_direct')
def test_provisional_toolkit(self):
test_args = []
test_environ = {}
with mock_sys_argv(test_args):
with mock_os_environ(test_environ):
print repr(self.ETSConfig.toolkit)
with self.ETSConfig.provisional_toolkit('test_direct'):
toolkit = self.ETSConfig.toolkit
self.assertEqual(toolkit, 'test_direct')
# should stay set, since no exception raised
toolkit = self.ETSConfig.toolkit
self.assertEqual(toolkit, 'test_direct')
def test_provisional_toolkit_exception(self):
test_args = []
test_environ = {'ETS_TOOLKIT': ''}
with mock_sys_argv(test_args):
with mock_os_environ(test_environ):
try:
with self.ETSConfig.provisional_toolkit('test_direct'):
toolkit = self.ETSConfig.toolkit
self.assertEqual(toolkit, 'test_direct')
raise ETSToolkitError("Test exception")
except ETSToolkitError as exc:
if not exc.message == "Test exception":
raise
# should be reset, since exception raised
toolkit = self.ETSConfig.toolkit
self.assertEqual(toolkit, '')
def test_provisional_toolkit_already_set(self):
test_args = []
test_environ = {'ETS_TOOLKIT': 'test_environ'}
with mock_sys_argv(test_args):
with mock_os_environ(test_environ):
with self.assertRaises(ETSToolkitError):
with self.ETSConfig.provisional_toolkit('test_direct'):
pass
# should come from the environment
toolkit = self.ETSConfig.toolkit
self.assertEqual(toolkit, 'test_environ')
def test_user_data(self):
"""
user data
"""
dirname = self.ETSConfig.user_data
self.assertEqual(os.path.exists(dirname), True)
self.assertEqual(os.path.isdir(dirname), True)
return
def test_set_user_data(self):
"""
set user data
"""
old = self.ETSConfig.user_data
self.ETSConfig.user_data = 'foo'
self.assertEqual('foo', self.ETSConfig.user_data)
self.ETSConfig.user_data = old
self.assertEqual(old, self.ETSConfig.user_data)
return
def test_user_data_is_idempotent(self):
"""
user data is idempotent
"""
# Just do the previous test again!
self.test_user_data()
return
def test_write_to_user_data_directory(self):
"""
write to user data directory
"""
self.ETSConfig.company = 'Blah'
dirname = self.ETSConfig.user_data
path = os.path.join(dirname, 'dummy.txt')
data = str(time.time())
f = open(path, 'w')
f.write(data)
f.close()
self.assertEqual(os.path.exists(path), True)
f = open(path)
result = f.read()
f.close()
os.remove(path)
self.assertEqual(data, result)
return
# For running as an individual set of tests.
if __name__ == '__main__':
# Add the non-default test of application_home...non-default because it
# must be run using this module as a script to be valid.
suite = unittest.TestLoader().loadTestsFromTestCase(ETSConfigTestCase)
suite.addTest(ETSConfigTestCase('_test_default_application_home'))
unittest.TextTestRunner(verbosity=2).run(suite)
#### EOF ######################################################################
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