check_config.py

# This script is used by test_misc.

import_imp
import_testinternalcapi
importjson
importos
importsys


defimport_singlephase():
assert'_testsinglephase'notinsys.modules
try:
import_testsinglephase# noqa: F401
exceptImportError:
sys.modules.pop('_testsinglephase', None)
returnFalse
else:
delsys.modules['_testsinglephase']
returnTrue


defcheck_singlephase(override):
# Check using the default setting.
settings_initial=_testinternalcapi.get_interp_settings()
allowed_initial=import_singlephase()
assert(_testinternalcapi.get_interp_settings() ==settings_initial)

# Apply the override and check.
override_initial=_imp._override_multi_interp_extensions_check(override)
settings_after=_testinternalcapi.get_interp_settings()
allowed_after=import_singlephase()

# Apply the override again and check.
noop= {}
override_after=_imp._override_multi_interp_extensions_check(override)
settings_noop=_testinternalcapi.get_interp_settings()
ifsettings_noop!=settings_after:
noop['settings_noop'] =settings_noop
allowed_noop=import_singlephase()
ifallowed_noop!=allowed_after:
noop['allowed_noop'] =allowed_noop

# Restore the original setting and check.
override_noop=_imp._override_multi_interp_extensions_check(override_initial)
ifoverride_noop!=override_after:
noop['override_noop'] =override_noop
settings_restored=_testinternalcapi.get_interp_settings()
allowed_restored=import_singlephase()

# Restore the original setting again.
override_restored=_imp._override_multi_interp_extensions_check(override_initial)
assert(_testinternalcapi.get_interp_settings() ==settings_restored)

returndict({
'requested': override,
'override__initial': override_initial,
'override_after': override_after,
'override_restored': override_restored,
'settings__initial': settings_initial,
'settings_after': settings_after,
'settings_restored': settings_restored,
'allowed__initial': allowed_initial,
'allowed_after': allowed_after,
'allowed_restored': allowed_restored,
 }, **noop)


defrun_singlephase_check(override, outfd):
withos.fdopen(outfd, 'w') asoutfile:
sys.stdout=outfile
sys.stderr=outfile
try:
results=check_singlephase(override)
json.dump(results, outfile)
finally:
sys.stdout=sys.__stdout__
sys.stderr=sys.__stderr__