mirror of https://github.com/python/cpython
248 lines
8.6 KiB
Python
248 lines
8.6 KiB
Python
import faulthandler
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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
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from test.libregrtest.save_env import saved_test_environment
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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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# 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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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 runtest(ns, test):
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"""Run a single test.
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test -- the name of the test
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verbose -- if true, print more messages
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quiet -- if true, don't print 'skipped' messages (probably redundant)
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huntrleaks -- run multiple times to test for leaks; requires a debug
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build; a triple corresponding to -R's three arguments
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output_on_failure -- if true, display test output on failure
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timeout -- dump the traceback and exit if a test takes more than
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timeout seconds
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failfast, match_tests -- See regrtest command-line flags for these.
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pgo -- if true, suppress any info irrelevant to a generating a PGO build
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Returns the tuple result, test_time, where result is one of the constants:
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INTERRUPTED KeyboardInterrupt when run under -j
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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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"""
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verbose = ns.verbose
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quiet = ns.quiet
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huntrleaks = ns.huntrleaks
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output_on_failure = ns.verbose3
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failfast = ns.failfast
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match_tests = ns.match_tests
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timeout = ns.timeout
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pgo = ns.pgo
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use_timeout = (timeout is not None)
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if use_timeout:
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faulthandler.dump_traceback_later(timeout, exit=True)
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try:
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support.match_tests = match_tests
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if 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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# Reuse the same instance to all calls to runtest(). Some
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# tests keep a reference to sys.stdout or sys.stderr
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# (eg. test_argparse).
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if runtest.stringio is None:
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stream = io.StringIO()
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runtest.stringio = stream
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else:
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stream = runtest.stringio
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stream.seek(0)
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stream.truncate()
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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, verbose, quiet, huntrleaks,
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display_failure=False, pgo=pgo)
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if result[0] == FAILED:
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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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support.verbose = verbose # Tell tests to be moderately quiet
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result = runtest_inner(ns, test, verbose, quiet, huntrleaks,
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display_failure=not verbose, pgo=pgo)
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return result
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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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cleanup_test_droppings(test, verbose)
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runtest.stringio = None
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def runtest_inner(ns, test, verbose, quiet,
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huntrleaks=False, display_failure=True, *, pgo=False):
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support.unload(test)
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test_time = 0.0
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refleak = False # True if the test leaked references.
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try:
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if test.startswith('test.') or ns.testdir:
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abstest = test
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else:
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# Always import it from the test package
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abstest = 'test.' + test
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with saved_test_environment(test, verbose, quiet, pgo=pgo) as environment:
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start_time = time.time()
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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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def test_runner():
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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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test_runner()
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if huntrleaks:
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refleak = dash_R(the_module, test, test_runner, huntrleaks)
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test_time = time.time() - start_time
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except support.ResourceDenied as msg:
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if not quiet and not pgo:
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print(test, "skipped --", msg, flush=True)
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return RESOURCE_DENIED, test_time
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except unittest.SkipTest as msg:
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if not quiet and not pgo:
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print(test, "skipped --", msg, flush=True)
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return SKIPPED, test_time
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except KeyboardInterrupt:
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raise
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except support.TestFailed as msg:
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if not pgo:
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if display_failure:
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print("test", test, "failed --", msg, file=sys.stderr,
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flush=True)
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else:
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print("test", test, "failed", file=sys.stderr, flush=True)
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return FAILED, test_time
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except:
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msg = traceback.format_exc()
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if not pgo:
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print("test", test, "crashed --", msg, file=sys.stderr,
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flush=True)
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return FAILED, test_time
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else:
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if refleak:
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return FAILED, test_time
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if environment.changed:
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return ENV_CHANGED, test_time
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return PASSED, test_time
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def cleanup_test_droppings(testname, verbose):
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import shutil
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import stat
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import gc
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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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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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"db_home",
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):
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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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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 SystemError("os.path says %r exists but is neither "
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"directory nor file" % name)
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if verbose:
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print("%r left behind %s %r" % (testname, kind, name))
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try:
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# if we have chmod, fix possible permissions problems
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# that might prevent cleanup
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if (hasattr(os, 'chmod')):
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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 msg:
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print(("%r left behind %s %r and it couldn't be "
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"removed: %s" % (testname, kind, name, msg)), file=sys.stderr)
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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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