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__init__.py
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__init__.py
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# -*- coding: utf-8 -*-
# <Lettuce - Behaviour Driven Development for python>
# Copyright (C) <2010> Gabriel Falcão <gabriel@nacaolivre.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
version = '0.1rc9'
release = 'barium'
import os
import sys
from lettuce import fs
from lettuce.core import Feature, TotalResult
from lettuce.terrain import after
from lettuce.terrain import before
from lettuce.terrain import world
from lettuce.decorators import step
from lettuce.registry import CALLBACK_REGISTRY
from lettuce.registry import STEP_REGISTRY
from lettuce.exceptions import LettuceSyntaxError
__all__ = ['after', 'before', 'step', 'world', 'STEP_REGISTRY', 'CALLBACK_REGISTRY']
def _import(name):
return __import__(name)
class Runner(object):
""" Main lettuce's test runner
Takes a base path as parameter (string), so that it can look for
features and step definitions on there.
"""
def __init__(self, base_path, verbosity=0):
""" lettuce.Runner will try to find a terrain.py file and
import it from within `base_path`
"""
self.terrain = None
self.single_feature = None
if os.path.isfile(base_path) and os.path.exists(base_path):
self.single_feature = base_path
base_path = os.path.dirname(base_path)
sys.path.insert(0, base_path)
self.loader = fs.FeatureLoader(base_path)
self.verbosity = verbosity
try:
self.terrain = _import("terrain")
except Exception, e:
if not "No module named terrain" in str(e):
string = 'Lettuce has tried to load the conventional environment ' \
'module "terrain"\nbut it has errors, check its contents and ' \
'try to run lettuce again.\n'
sys.stderr.write(string)
raise SystemExit(1)
sys.path.remove(base_path)
if verbosity is 0:
from lettuce.plugins import non_verbose as output
elif verbosity is 3:
from lettuce.plugins import shell_output as output
else:
from lettuce.plugins import colored_shell_output as output
reload(output)
self.output = output
def run(self):
""" Find and load step definitions, and them find and load
features under `base_path` specified on constructor
"""
self.loader.find_and_load_step_definitions()
for callback in CALLBACK_REGISTRY['all']['before']:
callback()
results = []
if self.single_feature:
features_files = [self.single_feature]
else:
features_files = self.loader.find_feature_files()
if not features_files:
self.output.print_no_features_found(self.loader.base_dir)
return
try:
for filename in features_files:
feature = Feature.from_file(filename)
results.append(feature.run())
except LettuceSyntaxError, e:
sys.stderr.write(e.msg)
raise SystemExit(2)
total = TotalResult(results)
for callback in CALLBACK_REGISTRY['all']['after']:
callback(total)
return total