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"""Imports unittest as a replacement for testing.pybase.googletest."""
import inspect
import itertools
import os
import tempfile
# pylint: disable=wildcard-import
from unittest import *
unittest_main = main
# pylint: disable=invalid-name
# pylint: disable=undefined-variable
def main(*args, **kwargs):
"""Delegate to unittest.main after redefining testLoader."""
if 'TEST_SHARD_STATUS_FILE' in os.environ:
try:
f = None
try:
f = open(os.environ['TEST_SHARD_STATUS_FILE'], 'w')
f.write('')
except IOError:
sys.stderr.write('Error opening TEST_SHARD_STATUS_FILE (%s). Exiting.'
% os.environ['TEST_SHARD_STATUS_FILE'])
sys.exit(1)
finally:
if f is not None: f.close()
if ('TEST_TOTAL_SHARDS' not in os.environ or
'TEST_SHARD_INDEX' not in os.environ):
return unittest_main(*args, **kwargs)
total_shards = int(os.environ['TEST_TOTAL_SHARDS'])
shard_index = int(os.environ['TEST_SHARD_INDEX'])
base_loader = TestLoader()
delegate_get_names = base_loader.getTestCaseNames
bucket_iterator = itertools.cycle(range(total_shards))
def getShardedTestCaseNames(testCaseClass):
filtered_names = []
for testcase in sorted(delegate_get_names(testCaseClass)):
bucket = bucket_iterator.next()
if bucket == shard_index:
filtered_names.append(testcase)
return filtered_names
# Override getTestCaseNames
base_loader.getTestCaseNames = getShardedTestCaseNames
kwargs['testLoader'] = base_loader
unittest_main(*args, **kwargs)
def GetTempDir():
first_frame = inspect.stack()[-1][0]
temp_dir = os.path.join(
tempfile.gettempdir(), os.path.basename(inspect.getfile(first_frame)))
temp_dir = temp_dir.rstrip('.py')
if not os.path.isdir(temp_dir):
os.mkdir(temp_dir, 0755)
return temp_dir
def StatefulSessionAvailable():
return False
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