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# vim:fileencoding=utf-8:noet
from __future__ import (unicode_literals, division, absolute_import, print_function)
import os
from threading import Lock
from copy import deepcopy
from time import sleep
from functools import wraps
from powerline.renderer import Renderer
from powerline.lib.config import ConfigLoader
from powerline import Powerline, get_default_theme
from tests.modules.lib import Args, replace_attr
UT = get_default_theme(is_unicode=True)
AT = get_default_theme(is_unicode=False)
class TestHelpers(object):
def __init__(self, config):
self.config = config
self.access_log = []
self.access_lock = Lock()
def loader_condition(self, path):
return (path in self.config) and path
def find_config_files(self, cfg_path, config_loader, loader_callback):
if cfg_path.endswith('.json'):
cfg_path = cfg_path[:-5]
if cfg_path.startswith('/'):
cfg_path = cfg_path.lstrip('/')
with self.access_lock:
self.access_log.append('check:' + cfg_path)
if cfg_path in self.config:
yield cfg_path
else:
if config_loader:
config_loader.register_missing(self.loader_condition, loader_callback, cfg_path)
raise IOError(('fcf:' if cfg_path.endswith('raise') else '') + cfg_path)
def load_json_config(self, config_file_path, *args, **kwargs):
if config_file_path.endswith('.json'):
config_file_path = config_file_path[:-5]
if config_file_path.startswith('/'):
config_file_path = config_file_path.lstrip('/')
with self.access_lock:
self.access_log.append('load:' + config_file_path)
try:
return deepcopy(self.config[config_file_path])
except KeyError:
raise IOError(config_file_path)
def pop_events(self):
with self.access_lock:
r = self.access_log[:]
self.access_log = []
return r
def log_call(func):
@wraps(func)
def ret(self, *args, **kwargs):
self._calls.append((func.__name__, args, kwargs))
return func(self, *args, **kwargs)
return ret
class TestWatcher(object):
events = set()
lock = Lock()
def __init__(self):
self._calls = []
@log_call
def watch(self, file):
pass
@log_call
def __call__(self, file):
with self.lock:
if file in self.events:
self.events.remove(file)
return True
return False
def _reset(self, files):
with self.lock:
self.events.clear()
self.events.update(files)
@log_call
def unsubscribe(self):
pass
class Logger(object):
def __init__(self):
self.messages = []
self.lock = Lock()
def _add_msg(self, attr, msg):
with self.lock:
self.messages.append(attr + ':' + msg)
def _pop_msgs(self):
with self.lock:
r = self.messages
self.messages = []
return r
def __getattr__(self, attr):
return lambda *args, **kwargs: self._add_msg(attr, *args, **kwargs)
class SimpleRenderer(Renderer):
def hlstyle(self, fg=None, bg=None, attrs=None):
return '<{fg} {bg} {attrs}>'.format(fg=fg and fg[0], bg=bg and bg[0], attrs=attrs)
class EvenSimplerRenderer(Renderer):
def hlstyle(self, fg=None, bg=None, attrs=None):
return '{{{fg}{bg}{attrs}}}'.format(
fg=fg and fg[0] or '-',
bg=bg and bg[0] or '-',
attrs=attrs if attrs else '',
)
class TestPowerline(Powerline):
_created = False
def __init__(self, _helpers, **kwargs):
super(TestPowerline, self).__init__(**kwargs)
self._helpers = _helpers
self.find_config_files = _helpers.find_config_files
@staticmethod
def get_local_themes(local_themes):
return local_themes
@staticmethod
def get_config_paths():
return ['']
def _will_create_renderer(self):
return self.cr_kwargs
def _pop_events(self):
return self._helpers.pop_events()
renderer = EvenSimplerRenderer
class TestConfigLoader(ConfigLoader):
def __init__(self, _helpers, **kwargs):
watcher = TestWatcher()
super(TestConfigLoader, self).__init__(
load=_helpers.load_json_config,
watcher=watcher,
watcher_type='test',
**kwargs
)
def get_powerline(config, **kwargs):
helpers = TestHelpers(config)
return get_powerline_raw(
helpers,
TestPowerline,
_helpers=helpers,
ext='test',
renderer_module='tests.modules.lib.config_mock',
logger=Logger(),
**kwargs
)
def select_renderer(simpler_renderer=False):
global renderer
renderer = EvenSimplerRenderer if simpler_renderer else SimpleRenderer
def get_powerline_raw(helpers, PowerlineClass, replace_gcp=False, **kwargs):
if not isinstance(helpers, TestHelpers):
helpers = TestHelpers(helpers)
select_renderer(kwargs.pop('simpler_renderer', False))
if replace_gcp:
class PowerlineClass(PowerlineClass):
@staticmethod
def get_config_paths():
return ['/']
pl = PowerlineClass(
config_loader=TestConfigLoader(
_helpers=helpers,
run_once=kwargs.get('run_once')
),
**kwargs
)
pl._watcher = pl.config_loader.watcher
return pl
def swap_attributes(config, powerline_module):
return replace_attr(powerline_module, 'os', Args(
path=Args(
isfile=lambda path: path.lstrip('/').replace('.json', '') in config,
join=os.path.join,
expanduser=lambda path: path,
realpath=lambda path: path,
dirname=os.path.dirname,
),
environ={},
))
def add_watcher_events(p, *args, **kwargs):
if isinstance(p._watcher, TestWatcher):
p._watcher._reset(args)
while not p._will_create_renderer():
sleep(kwargs.get('interval', 0.1))
if not kwargs.get('wait', True):
return
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