mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
130 lines
5.3 KiB
Python
130 lines
5.3 KiB
Python
# Copyright (c) 2009, Google Inc. All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are
|
|
# met:
|
|
#
|
|
# * Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# * Redistributions in binary form must reproduce the above
|
|
# copyright notice, this list of conditions and the following disclaimer
|
|
# in the documentation and/or other materials provided with the
|
|
# distribution.
|
|
# * Neither the name of Google Inc. nor the names of its
|
|
# contributors may be used to endorse or promote products derived from
|
|
# this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
#
|
|
# Class for unittest support. Used for capturing stderr/stdout.
|
|
|
|
import logging
|
|
import sys
|
|
import unittest
|
|
|
|
from StringIO import StringIO
|
|
|
|
|
|
class OutputCapture(object):
|
|
# By default we capture the output to a stream. Other modules may override
|
|
# this function in order to do things like pass through the output. See
|
|
# webkitpy.test.main for an example.
|
|
@staticmethod
|
|
def stream_wrapper(stream):
|
|
return StringIO()
|
|
|
|
def __init__(self):
|
|
self.saved_outputs = dict()
|
|
self._log_level = logging.INFO
|
|
|
|
def set_log_level(self, log_level):
|
|
self._log_level = log_level
|
|
if hasattr(self, '_logs_handler'):
|
|
self._logs_handler.setLevel(self._log_level)
|
|
|
|
def _capture_output_with_name(self, output_name):
|
|
stream = getattr(sys, output_name)
|
|
captured_output = self.stream_wrapper(stream)
|
|
self.saved_outputs[output_name] = stream
|
|
setattr(sys, output_name, captured_output)
|
|
return captured_output
|
|
|
|
def _restore_output_with_name(self, output_name):
|
|
captured_output = getattr(sys, output_name).getvalue()
|
|
setattr(sys, output_name, self.saved_outputs[output_name])
|
|
del self.saved_outputs[output_name]
|
|
return captured_output
|
|
|
|
def capture_output(self):
|
|
self._logs = StringIO()
|
|
self._logs_handler = logging.StreamHandler(self._logs)
|
|
self._logs_handler.setLevel(self._log_level)
|
|
self._logger = logging.getLogger()
|
|
self._orig_log_level = self._logger.level
|
|
self._logger.addHandler(self._logs_handler)
|
|
self._logger.setLevel(min(self._log_level, self._orig_log_level))
|
|
return (self._capture_output_with_name("stdout"), self._capture_output_with_name("stderr"))
|
|
|
|
def restore_output(self):
|
|
self._logger.removeHandler(self._logs_handler)
|
|
self._logger.setLevel(self._orig_log_level)
|
|
self._logs_handler.flush()
|
|
self._logs.flush()
|
|
logs_string = self._logs.getvalue()
|
|
delattr(self, '_logs_handler')
|
|
delattr(self, '_logs')
|
|
return (self._restore_output_with_name("stdout"), self._restore_output_with_name("stderr"), logs_string)
|
|
|
|
def assert_outputs(self, testcase, function, args=[], kwargs={}, expected_stdout="", expected_stderr="", expected_exception=None, expected_logs=None):
|
|
self.capture_output()
|
|
try:
|
|
if expected_exception:
|
|
return_value = testcase.assertRaises(expected_exception, function, *args, **kwargs)
|
|
else:
|
|
return_value = function(*args, **kwargs)
|
|
finally:
|
|
(stdout_string, stderr_string, logs_string) = self.restore_output()
|
|
|
|
if hasattr(testcase, 'assertMultiLineEqual'):
|
|
testassert = testcase.assertMultiLineEqual
|
|
else:
|
|
testassert = testcase.assertEqual
|
|
|
|
testassert(stdout_string, expected_stdout)
|
|
testassert(stderr_string, expected_stderr)
|
|
if expected_logs is not None:
|
|
testassert(logs_string, expected_logs)
|
|
# This is a little strange, but I don't know where else to return this information.
|
|
return return_value
|
|
|
|
|
|
class OutputCaptureTestCaseBase(unittest.TestCase):
|
|
maxDiff = None
|
|
|
|
def setUp(self):
|
|
unittest.TestCase.setUp(self)
|
|
self.output_capture = OutputCapture()
|
|
(self.__captured_stdout, self.__captured_stderr) = self.output_capture.capture_output()
|
|
|
|
def tearDown(self):
|
|
del self.__captured_stdout
|
|
del self.__captured_stderr
|
|
self.output_capture.restore_output()
|
|
unittest.TestCase.tearDown(self)
|
|
|
|
def assertStdout(self, expected_stdout):
|
|
self.assertEqual(expected_stdout, self.__captured_stdout.getvalue())
|
|
|
|
def assertStderr(self, expected_stderr):
|
|
self.assertEqual(expected_stderr, self.__captured_stderr.getvalue())
|