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