This commit refactors `TestVim` test class in test_configuration so that
1. `test_environ_update` does not leave state (value of `powerline_config_paths`
global Vim variable) behind other tests can use.
2. `test_local_themes` does not rely on state left from `test_environ_update`,
instead using new facility for providing needed value of
`Powerline.get_config_paths` call. This facility will be used later in BAR
tests.
Ref #1256
Now imports follow the following structure:
1. __future__ line: exactly one line allowed:
from __future__ import (unicode_literals, division, absolute_import, print_function)
(powerline.shell is the only exception due to problems with argparse).
2. Standard python library imports in a form `import X`.
3. Standard python library imports in a form `from X import Y`.
4. and 5. 2. and 3. for third-party (non-python and non-powerline imports).
6. 3. for powerline non-test imports.
7. and 8. 2. and 3. for powerline testing module imports.
Each list entry is separated by exactly one newline from another import. If
there is module docstring it goes between `# vim:` comment and `__future__`
import. So the structure containing all items is the following:
#!/usr/bin/env python
# vim:fileencoding=utf-8:noet
'''Powerline super module'''
import sys
from argparse import ArgumentParser
import psutil
from colormath.color_diff import delta_e_cie2000
from powerline.lib.unicode import u
import tests.vim as vim_module
from tests import TestCase
.
Target: with long-living Powerline objects periodically reload configuration
recreating renderer. Use file watchers to watch for configuration. Configuration
should be able to be safely reloaded in non-blocking mode in a separate thread
up to the time when it comes to recreating renderer.
This commit does not add anything that actually reloads the configuration,
multiple runs of .create_renderer were not tested.