blob: 94ec4f32b5571f24c76dbda0700041441431a746 [file] [log] [blame]
# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import contextlib
import difflib
import logging
import os
import describe
_SCRIPT_DIR = os.path.dirname(__file__)
TEST_DATA_DIR = os.path.join(_SCRIPT_DIR, 'testdata')
_MOCK_TOOL_PREFIX = os.path.join(os.path.abspath(TEST_DATA_DIR),
'mock_toolchain', '')
_MOCK_SDK_DIR = os.path.join(TEST_DATA_DIR, 'mock_sdk')
TEST_SOURCE_DIR = os.path.join(TEST_DATA_DIR, 'mock_source_directory')
TEST_OUTPUT_DIR = os.path.join(TEST_SOURCE_DIR, 'out', 'Release')
class Golden:
"""Utility to use or manage "Golden" test files."""
# Global state on whether to update Golden files in CheckOrUpdate().
do_update = False
@staticmethod
def EnableUpdate():
Golden.do_update = True
@staticmethod
def CheckOrUpdate(golden_path, actual_lines):
if Golden.do_update:
with open(golden_path, 'w') as file_obj:
describe.WriteLines(actual_lines, file_obj.write)
logging.info('Wrote %s', golden_path)
else:
with open(golden_path) as file_obj:
expected = list(file_obj)
actual = list(l + '\n' for l in actual_lines)
assert actual == expected, (
('Did not match %s.\n' % golden_path) + ''.join(
difflib.unified_diff(expected, actual, 'expected', 'actual')))
@contextlib.contextmanager
def AddMocksToPath():
prev_path = os.environ['PATH']
os.environ['PATH'] = _MOCK_TOOL_PREFIX[:-1] + os.path.pathsep + prev_path
os.environ['SUPERSIZE_APK_ANALYZER'] = os.path.join(_MOCK_SDK_DIR, 'tools',
'bin', 'apkanalyzer')
os.environ['SUPERSIZE_AAPT2'] = os.path.join(_MOCK_SDK_DIR, 'tools', 'bin',
'aapt2')
os.environ['SUPERSIZE_TOOL_PREFIX'] = _MOCK_TOOL_PREFIX
try:
yield
finally:
del os.environ['SUPERSIZE_TOOL_PREFIX']
del os.environ['SUPERSIZE_AAPT2']
del os.environ['SUPERSIZE_APK_ANALYZER']
os.environ['PATH'] = prev_path