cb0ebb9e6c
Third party imports are supposed to be after standard library imports so make six be after. Some newlines are also added to separate standard library imports from all the others. Co-authored-by: Ivan A. Melnikov <imelnikov@griddynamics.com> Change-Id: Ied067e9367612758666da726df195ed390215e1b
117 lines
3.5 KiB
Python
117 lines
3.5 KiB
Python
# -*- coding: utf-8 -*-
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (C) 2012 Yahoo! Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Run examples as unit tests
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This module executes examples as unit tests, thus ensuring they at least
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can be executed with current taskflow. For examples with deterministic
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output, the output can be put to file with same name and '.out.txt'
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extension; then it will be checked that output did not change.
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When this module is used as main module, output for all examples are
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generated. Please note that this will break tests as output for most
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examples is indeterministic.
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"""
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import os
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import re
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import subprocess
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import sys
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import taskflow.test
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ROOT_DIR = os.path.abspath(
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os.path.dirname(
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os.path.dirname(
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os.path.dirname(__file__))))
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def root_path(*args):
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return os.path.join(ROOT_DIR, *args)
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def run_example(name):
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path = root_path('taskflow', 'examples', '%s.py' % name)
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obj = subprocess.Popen(
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[sys.executable, path],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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output = obj.communicate()
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if output[1]:
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raise RuntimeError('Example wrote to stderr:\n%s'
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% output[1].decode())
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return output[0].decode()
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def expected_output_path(name):
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return root_path('taskflow', 'examples',
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'%s.out.txt' % name)
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def list_examples():
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ext = '.py'
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examples_dir = root_path('taskflow', 'examples')
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for filename in os.listdir(examples_dir):
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if filename.endswith(ext):
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yield filename[:-len(ext)]
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class ExamplesTestCase(taskflow.test.TestCase):
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maxDiff = None # sky's the limit
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uuid_re = re.compile('XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX'
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.replace('X', '[0-9a-f]'))
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@classmethod
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def update(cls):
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def add_test_method(name, method_name):
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def test_example(self):
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self._check_example(name)
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test_example.__name__ = method_name
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setattr(cls, method_name, test_example)
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for name in list_examples():
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add_test_method(name, 'test_%s' % name)
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def _check_example(self, name):
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output = run_example(name)
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eop = expected_output_path(name)
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if os.path.isfile(eop):
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with open(eop) as f:
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expected_output = f.read()
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# NOTE(imelnikov): on each run new uuid is generated, so we just
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# replace them with some constant string
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output = self.uuid_re.sub('<SOME UUID>', output)
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expected_output = self.uuid_re.sub('<SOME UUID>', expected_output)
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self.assertEqual(output, expected_output)
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ExamplesTestCase.update()
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def make_output_files():
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"""Generate output files for all examples"""
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for name in list_examples(False):
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output = run_example(name)
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with open(expected_output_path(name), 'w') as f:
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f.write(output)
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if __name__ == '__main__':
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make_output_files()
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