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341 lines
10 KiB
341 lines
10 KiB
import collections
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import faulthandler
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import functools
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import gc
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import importlib
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import io
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import os
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import sys
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import time
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import traceback
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import unittest
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from test import support
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from test.libregrtest.refleak import dash_R, clear_caches
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from test.libregrtest.save_env import saved_test_environment
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from test.libregrtest.utils import format_duration, print_warning
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# Test result constants.
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PASSED = 1
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FAILED = 0
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ENV_CHANGED = -1
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SKIPPED = -2
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RESOURCE_DENIED = -3
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INTERRUPTED = -4
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CHILD_ERROR = -5 # error in a child process
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TEST_DID_NOT_RUN = -6
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TIMEOUT = -7
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_FORMAT_TEST_RESULT = {
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PASSED: '%s passed',
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FAILED: '%s failed',
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ENV_CHANGED: '%s failed (env changed)',
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SKIPPED: '%s skipped',
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RESOURCE_DENIED: '%s skipped (resource denied)',
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INTERRUPTED: '%s interrupted',
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CHILD_ERROR: '%s crashed',
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TEST_DID_NOT_RUN: '%s run no tests',
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TIMEOUT: '%s timed out',
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}
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# Minimum duration of a test to display its duration or to mention that
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# the test is running in background
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PROGRESS_MIN_TIME = 30.0 # seconds
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# small set of tests to determine if we have a basically functioning interpreter
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# (i.e. if any of these fail, then anything else is likely to follow)
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STDTESTS = [
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'test_grammar',
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'test_opcodes',
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'test_dict',
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'test_builtin',
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'test_exceptions',
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'test_types',
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'test_unittest',
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'test_doctest',
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'test_doctest2',
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'test_support'
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]
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# set of tests that we don't want to be executed when using regrtest
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NOTTESTS = set()
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# used by --findleaks, store for gc.garbage
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FOUND_GARBAGE = []
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def is_failed(result, ns):
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ok = result.result
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if ok in (PASSED, RESOURCE_DENIED, SKIPPED, TEST_DID_NOT_RUN):
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return False
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if ok == ENV_CHANGED:
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return ns.fail_env_changed
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return True
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def format_test_result(result):
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fmt = _FORMAT_TEST_RESULT.get(result.result, "%s")
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text = fmt % result.test_name
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if result.result == TIMEOUT:
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text = '%s (%s)' % (text, format_duration(result.test_time))
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return text
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def findtestdir(path=None):
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return path or os.path.dirname(os.path.dirname(__file__)) or os.curdir
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def findtests(testdir=None, stdtests=STDTESTS, nottests=NOTTESTS):
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"""Return a list of all applicable test modules."""
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testdir = findtestdir(testdir)
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names = os.listdir(testdir)
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tests = []
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others = set(stdtests) | nottests
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for name in names:
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mod, ext = os.path.splitext(name)
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if mod[:5] == "test_" and ext in (".py", "") and mod not in others:
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tests.append(mod)
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return stdtests + sorted(tests)
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def get_abs_module(ns, test_name):
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if test_name.startswith('test.') or ns.testdir:
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return test_name
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else:
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# Import it from the test package
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return 'test.' + test_name
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TestResult = collections.namedtuple('TestResult',
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'test_name result test_time xml_data')
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def _runtest(ns, test_name):
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# Handle faulthandler timeout, capture stdout+stderr, XML serialization
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# and measure time.
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output_on_failure = ns.verbose3
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use_timeout = (ns.timeout is not None)
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if use_timeout:
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faulthandler.dump_traceback_later(ns.timeout, exit=True)
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start_time = time.perf_counter()
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try:
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support.set_match_tests(ns.match_tests, ns.ignore_tests)
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support.junit_xml_list = xml_list = [] if ns.xmlpath else None
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if ns.failfast:
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support.failfast = True
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if output_on_failure:
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support.verbose = True
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stream = io.StringIO()
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orig_stdout = sys.stdout
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orig_stderr = sys.stderr
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try:
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sys.stdout = stream
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sys.stderr = stream
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result = _runtest_inner(ns, test_name,
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display_failure=False)
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if result != PASSED:
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output = stream.getvalue()
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orig_stderr.write(output)
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orig_stderr.flush()
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finally:
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sys.stdout = orig_stdout
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sys.stderr = orig_stderr
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else:
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# Tell tests to be moderately quiet
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support.verbose = ns.verbose
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result = _runtest_inner(ns, test_name,
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display_failure=not ns.verbose)
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if xml_list:
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import xml.etree.ElementTree as ET
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xml_data = [ET.tostring(x).decode('us-ascii') for x in xml_list]
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else:
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xml_data = None
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test_time = time.perf_counter() - start_time
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return TestResult(test_name, result, test_time, xml_data)
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finally:
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if use_timeout:
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faulthandler.cancel_dump_traceback_later()
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support.junit_xml_list = None
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def runtest(ns, test_name):
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"""Run a single test.
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ns -- regrtest namespace of options
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test_name -- the name of the test
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Returns the tuple (result, test_time, xml_data), where result is one
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of the constants:
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INTERRUPTED KeyboardInterrupt
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RESOURCE_DENIED test skipped because resource denied
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SKIPPED test skipped for some other reason
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ENV_CHANGED test failed because it changed the execution environment
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FAILED test failed
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PASSED test passed
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EMPTY_TEST_SUITE test ran no subtests.
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TIMEOUT test timed out.
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If ns.xmlpath is not None, xml_data is a list containing each
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generated testsuite element.
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"""
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try:
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return _runtest(ns, test_name)
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except:
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if not ns.pgo:
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msg = traceback.format_exc()
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print(f"test {test_name} crashed -- {msg}",
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file=sys.stderr, flush=True)
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return TestResult(test_name, FAILED, 0.0, None)
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def _test_module(the_module):
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loader = unittest.TestLoader()
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tests = loader.loadTestsFromModule(the_module)
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for error in loader.errors:
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print(error, file=sys.stderr)
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if loader.errors:
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raise Exception("errors while loading tests")
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support.run_unittest(tests)
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def _runtest_inner2(ns, test_name):
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# Load the test function, run the test function, handle huntrleaks
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# and findleaks to detect leaks
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abstest = get_abs_module(ns, test_name)
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# remove the module from sys.module to reload it if it was already imported
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support.unload(abstest)
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the_module = importlib.import_module(abstest)
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# If the test has a test_main, that will run the appropriate
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# tests. If not, use normal unittest test loading.
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test_runner = getattr(the_module, "test_main", None)
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if test_runner is None:
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test_runner = functools.partial(_test_module, the_module)
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try:
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if ns.huntrleaks:
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# Return True if the test leaked references
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refleak = dash_R(ns, test_name, test_runner)
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else:
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test_runner()
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refleak = False
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finally:
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cleanup_test_droppings(test_name, ns.verbose)
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support.gc_collect()
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if gc.garbage:
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support.environment_altered = True
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print_warning(f"{test_name} created {len(gc.garbage)} "
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f"uncollectable object(s).")
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# move the uncollectable objects somewhere,
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# so we don't see them again
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FOUND_GARBAGE.extend(gc.garbage)
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gc.garbage.clear()
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support.reap_children()
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return refleak
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def _runtest_inner(ns, test_name, display_failure=True):
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# Detect environment changes, handle exceptions.
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# Reset the environment_altered flag to detect if a test altered
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# the environment
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support.environment_altered = False
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if ns.pgo:
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display_failure = False
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try:
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clear_caches()
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with saved_test_environment(test_name, ns.verbose, ns.quiet, pgo=ns.pgo) as environment:
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refleak = _runtest_inner2(ns, test_name)
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except support.ResourceDenied as msg:
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if not ns.quiet and not ns.pgo:
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print(f"{test_name} skipped -- {msg}", flush=True)
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return RESOURCE_DENIED
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except unittest.SkipTest as msg:
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if not ns.quiet and not ns.pgo:
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print(f"{test_name} skipped -- {msg}", flush=True)
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return SKIPPED
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except support.TestFailed as exc:
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msg = f"test {test_name} failed"
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if display_failure:
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msg = f"{msg} -- {exc}"
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print(msg, file=sys.stderr, flush=True)
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return FAILED
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except support.TestDidNotRun:
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return TEST_DID_NOT_RUN
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except KeyboardInterrupt:
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print()
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return INTERRUPTED
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except:
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if not ns.pgo:
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msg = traceback.format_exc()
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print(f"test {test_name} crashed -- {msg}",
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file=sys.stderr, flush=True)
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return FAILED
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if refleak:
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return FAILED
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if environment.changed:
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return ENV_CHANGED
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return PASSED
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def cleanup_test_droppings(test_name, verbose):
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# First kill any dangling references to open files etc.
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# This can also issue some ResourceWarnings which would otherwise get
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# triggered during the following test run, and possibly produce failures.
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support.gc_collect()
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# Try to clean up junk commonly left behind. While tests shouldn't leave
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# any files or directories behind, when a test fails that can be tedious
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# for it to arrange. The consequences can be especially nasty on Windows,
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# since if a test leaves a file open, it cannot be deleted by name (while
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# there's nothing we can do about that here either, we can display the
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# name of the offending test, which is a real help).
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for name in (support.TESTFN,):
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if not os.path.exists(name):
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continue
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if os.path.isdir(name):
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import shutil
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kind, nuker = "directory", shutil.rmtree
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elif os.path.isfile(name):
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kind, nuker = "file", os.unlink
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else:
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raise RuntimeError(f"os.path says {name!r} exists but is neither "
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f"directory nor file")
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if verbose:
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print_warning(f"{test_name} left behind {kind} {name!r}")
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support.environment_altered = True
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try:
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import stat
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# fix possible permissions problems that might prevent cleanup
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os.chmod(name, stat.S_IRWXU | stat.S_IRWXG | stat.S_IRWXO)
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nuker(name)
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except Exception as exc:
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print_warning(f"{test_name} left behind {kind} {name!r} "
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f"and it couldn't be removed: {exc}")
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