heat-agents/tests/common.py
Thomas Herve 25cd394bbe Add py3.5 support
Depends-On: Ibda89b467b461b8833515f50a0cf1cc3064cb917
Change-Id: I68ac61b7d1d0d180a7696ae2f0f75b1a4a969995
2017-07-17 13:43:43 +00:00

60 lines
2.0 KiB
Python

#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import json
import os
import subprocess
import testtools
class RunScriptTest(testtools.TestCase):
def relative_path(self, from_path, *to_paths):
return os.path.join(
os.path.dirname(os.path.realpath(from_path)), *to_paths)
def run_cmd(self, args, env, input_str=None):
subproc = subprocess.Popen(args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=env)
if input_str:
input_str = input_str.encode('utf-8')
stdout, stderr = subproc.communicate(input=input_str)
return subproc.returncode, stdout, stderr
def json_from_file(self, path):
with open(path) as f:
return json.load(f)
def json_from_files(self, path, count, delete_after=True):
for i in range(count + 1):
if i == 0:
filename = path
else:
filename = '%s_%d' % (path, i)
# check there are not more files than the exact number requested
if i == count:
self.assertFalse(
os.path.isfile(filename),
'More than %d invocations' % count
)
else:
with open(filename) as f:
yield json.load(f)
if delete_after:
os.remove(filename)