diff options
Diffstat (limited to 'Lib/test/support/__init__.py')
| -rw-r--r-- | Lib/test/support/__init__.py | 146 |
1 files changed, 141 insertions, 5 deletions
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py index d0d126a3a0..15d8fc849b 100644 --- a/Lib/test/support/__init__.py +++ b/Lib/test/support/__init__.py @@ -26,6 +26,7 @@ import sys import sysconfig import tempfile import time +import types import unittest import urllib.error import warnings @@ -89,11 +90,13 @@ __all__ = [ "bigmemtest", "bigaddrspacetest", "cpython_only", "get_attribute", "requires_IEEE_754", "skip_unless_xattr", "requires_zlib", "anticipate_failure", "load_package_tests", "detect_api_mismatch", - "requires_multiprocessing_queue", + "check__all__", "requires_android_level", "requires_multiprocessing_queue", # sys - "is_jython", "check_impl_detail", + "is_jython", "is_android", "check_impl_detail", "unix_shell", + "setswitchinterval", "android_not_root", # network "HOST", "IPV6_ENABLED", "find_unused_port", "bind_port", "open_urlresource", + "bind_unix_socket", # processes 'temp_umask', "reap_children", # logging @@ -104,7 +107,7 @@ __all__ = [ "check_warnings", "check_no_resource_warning", "EnvironmentVarGuard", "run_with_locale", "swap_item", "swap_attr", "Matcher", "set_memlimit", "SuppressCrashReport", "sortdict", - "run_with_tz", + "run_with_tz", "PGO", "missing_compiler_executable", ] class Error(Exception): @@ -706,6 +709,15 @@ def bind_port(sock, host=HOST): port = sock.getsockname()[1] return port +def bind_unix_socket(sock, addr): + """Bind a unix socket, raising SkipTest if PermissionError is raised.""" + assert sock.family == socket.AF_UNIX + try: + sock.bind(addr) + except PermissionError: + sock.close() + raise unittest.SkipTest('cannot bind AF_UNIX sockets') + def _is_ipv6_enabled(): """Check whether IPv6 is enabled on this host.""" if socket.has_ipv6: @@ -765,6 +777,15 @@ requires_lzma = unittest.skipUnless(lzma, 'requires lzma') is_jython = sys.platform.startswith('java') +_ANDROID_API_LEVEL = sysconfig.get_config_var('ANDROID_API_LEVEL') +is_android = (_ANDROID_API_LEVEL is not None and _ANDROID_API_LEVEL > 0) +android_not_root = (is_android and os.geteuid() != 0) + +if sys.platform != 'win32': + unix_shell = '/system/bin/sh' if is_android else '/bin/sh' +else: + unix_shell = None + # Filename used for testing if os.name == 'java': # Jython disallows @ in module names @@ -834,7 +855,7 @@ TESTFN_ENCODING = sys.getfilesystemencoding() # encoded by the filesystem encoding (in strict mode). It can be None if we # cannot generate such filename. TESTFN_UNENCODABLE = None -if os.name in ('nt', 'ce'): +if os.name == 'nt': # skip win32s (0) or Windows 9x/ME (1) if sys.getwindowsversion().platform >= 2: # Different kinds of characters from various languages to minimize the @@ -901,6 +922,10 @@ else: # Save the initial cwd SAVEDCWD = os.getcwd() +# Set by libregrtest/main.py so we can skip tests that are not +# useful for PGO +PGO = False + @contextlib.contextmanager def temp_dir(path=None, quiet=False): """Return a context manager that creates a temporary directory. @@ -1751,6 +1776,13 @@ def requires_resource(resource): else: return unittest.skip("resource {0!r} is not enabled".format(resource)) +def requires_android_level(level, reason): + if is_android and _ANDROID_API_LEVEL < level: + return unittest.skip('%s at Android API level %d' % + (reason, _ANDROID_API_LEVEL)) + else: + return _id + def cpython_only(test): """ Decorator for tests only applicable on CPython. @@ -2133,6 +2165,11 @@ def args_from_interpreter_flags(): settings in sys.flags and sys.warnoptions.""" return subprocess._args_from_interpreter_flags() +def optim_args_from_interpreter_flags(): + """Return a list of command-line arguments reproducing the current + optimization settings in sys.flags.""" + return subprocess._optim_args_from_interpreter_flags() + #============================================================ # Support for assertions about logging. #============================================================ @@ -2239,7 +2276,7 @@ def can_xattr(): os.setxattr(fp.fileno(), b"user.test", b"") # Kernels < 2.6.39 don't respect setxattr flags. kernel_version = platform.release() - m = re.match("2.6.(\d{1,2})", kernel_version) + m = re.match(r"2.6.(\d{1,2})", kernel_version) can = m is None or int(m.group(1)) >= 39 except OSError: can = False @@ -2284,6 +2321,65 @@ def detect_api_mismatch(ref_api, other_api, *, ignore=()): return missing_items +def check__all__(test_case, module, name_of_module=None, extra=(), + blacklist=()): + """Assert that the __all__ variable of 'module' contains all public names. + + The module's public names (its API) are detected automatically based on + whether they match the public name convention and were defined in + 'module'. + + The 'name_of_module' argument can specify (as a string or tuple thereof) + what module(s) an API could be defined in in order to be detected as a + public API. One case for this is when 'module' imports part of its public + API from other modules, possibly a C backend (like 'csv' and its '_csv'). + + The 'extra' argument can be a set of names that wouldn't otherwise be + automatically detected as "public", like objects without a proper + '__module__' attriubute. If provided, it will be added to the + automatically detected ones. + + The 'blacklist' argument can be a set of names that must not be treated + as part of the public API even though their names indicate otherwise. + + Usage: + import bar + import foo + import unittest + from test import support + + class MiscTestCase(unittest.TestCase): + def test__all__(self): + support.check__all__(self, foo) + + class OtherTestCase(unittest.TestCase): + def test__all__(self): + extra = {'BAR_CONST', 'FOO_CONST'} + blacklist = {'baz'} # Undocumented name. + # bar imports part of its API from _bar. + support.check__all__(self, bar, ('bar', '_bar'), + extra=extra, blacklist=blacklist) + + """ + + if name_of_module is None: + name_of_module = (module.__name__, ) + elif isinstance(name_of_module, str): + name_of_module = (name_of_module, ) + + expected = set(extra) + + for name in dir(module): + if name.startswith('_') or name in blacklist: + continue + obj = getattr(module, name) + if (getattr(obj, '__module__', None) in name_of_module or + (not hasattr(obj, '__module__') and + not isinstance(obj, types.ModuleType))): + expected.add(name) + test_case.assertCountEqual(module.__all__, expected) + + class SuppressCrashReport: """Try to prevent a crash report from popping up. @@ -2445,3 +2541,43 @@ def check_free_after_iterating(test, iter, cls, args=()): # The sequence should be deallocated just after the end of iterating gc_collect() test.assertTrue(done) + + +def missing_compiler_executable(cmd_names=[]): + """Check if the compiler components used to build the interpreter exist. + + Check for the existence of the compiler executables whose names are listed + in 'cmd_names' or all the compiler executables when 'cmd_names' is empty + and return the first missing executable or None when none is found + missing. + + """ + from distutils import ccompiler, sysconfig, spawn + compiler = ccompiler.new_compiler() + sysconfig.customize_compiler(compiler) + for name in compiler.executables: + if cmd_names and name not in cmd_names: + continue + cmd = getattr(compiler, name) + if cmd_names: + assert cmd is not None, \ + "the '%s' executable is not configured" % name + elif cmd is None: + continue + if spawn.find_executable(cmd[0]) is None: + return cmd[0] + + +_is_android_emulator = None +def setswitchinterval(interval): + # Setting a very low gil interval on the Android emulator causes python + # to hang (issue #26939). + minimum_interval = 1e-5 + if is_android and interval < minimum_interval: + global _is_android_emulator + if _is_android_emulator is None: + _is_android_emulator = (subprocess.check_output( + ['getprop', 'ro.kernel.qemu']).strip() == b'1') + if _is_android_emulator: + interval = minimum_interval + return sys.setswitchinterval(interval) |