ansible/test/runner/lib/coverage_util.py

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"""Utility code for facilitating collection of code coverage when running tests."""
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import contextlib
import os
import tempfile
from lib.config import (
IntegrationConfig,
SanityConfig,
TestConfig,
)
from lib.util import (
COVERAGE_CONFIG_PATH,
remove_tree,
)
from lib.data import (
data_context,
)
@contextlib.contextmanager
def coverage_context(args): # type: (TestConfig) -> None
"""Content to set up and clean up code coverage configuration for tests."""
coverage_setup(args)
try:
yield
finally:
coverage_cleanup(args)
def coverage_setup(args): # type: (TestConfig) -> None
"""Set up code coverage configuration before running tests."""
if args.coverage and data_context().content.collection:
coverage_config = generate_collection_coverage_config(args)
if args.explain:
args.coverage_config_base_path = '/tmp/coverage-temp-dir'
else:
args.coverage_config_base_path = tempfile.mkdtemp()
with open(os.path.join(args.coverage_config_base_path, COVERAGE_CONFIG_PATH), 'w') as coverage_config_path_fd:
coverage_config_path_fd.write(coverage_config)
def coverage_cleanup(args): # type: (TestConfig) -> None
"""Clean up code coverage configuration after tests have finished."""
if args.coverage_config_base_path and not args.explain:
remove_tree(args.coverage_config_base_path)
args.coverage_config_base_path = None
def generate_collection_coverage_config(args): # type: (TestConfig) -> str
"""Generate code coverage configuration for tests."""
coverage_config = '''
[run]
branch = True
concurrency = multiprocessing
parallel = True
disable_warnings =
no-data-collected
'''
if isinstance(args, IntegrationConfig):
coverage_config += '''
include =
%s/*
*/%s/*
''' % (data_context().content.root, data_context().content.collection.directory)
elif isinstance(args, SanityConfig):
# temporary work-around for import sanity test
coverage_config += '''
include =
%s/*
omit =
*/test/runner/.tox/*
''' % data_context().content.root
else:
coverage_config += '''
include =
%s/*
''' % data_context().content.root
return coverage_config