diff options
| -rw-r--r-- | Lib/test/support/__init__.py | 18 | ||||
| -rw-r--r-- | Lib/test/test_decimal.py | 7 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Tests/2021-08-06-00-07-15.bpo-40928.aIwb6G.rst | 2 |
3 files changed, 26 insertions, 1 deletions
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py index 4a2ed1ea5a..cb3acecbbd 100644 --- a/Lib/test/support/__init__.py +++ b/Lib/test/support/__init__.py @@ -459,6 +459,24 @@ TEST_HOME_DIR = os.path.dirname(TEST_SUPPORT_DIR) TEST_DATA_DIR = os.path.join(TEST_HOME_DIR, "data") +def darwin_malloc_err_warning(test_name): + """Assure user that loud errors generated by macOS libc's malloc are + expected.""" + if sys.platform != 'darwin': + return + + import shutil + msg = ' NOTICE ' + detail = (f'{test_name} may generate "malloc can\'t allocate region"\n' + 'warnings on macOS systems. This behavior is known. Do not\n' + 'report a bug unless tests are also failing. See bpo-40928.') + + padding, _ = shutil.get_terminal_size() + print(msg.center(padding, '-')) + print(detail) + print('-' * padding) + + def findfile(filename, subdir=None): """Try to find a file on sys.path or in the test directory. If it is not found the argument passed to the function is returned (this does not diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py index 058829b03a..28d56909b3 100644 --- a/Lib/test/test_decimal.py +++ b/Lib/test/test_decimal.py @@ -36,7 +36,8 @@ from test.support import (run_unittest, run_doctest, is_resource_enabled, requires_IEEE_754, requires_docstrings, requires_legacy_unicode_capi) from test.support import (TestFailed, - run_with_locale, cpython_only) + run_with_locale, cpython_only, + darwin_malloc_err_warning) from test.support.import_helper import import_fresh_module from test.support import warnings_helper import random @@ -44,6 +45,10 @@ import inspect import threading +if sys.platform == 'darwin': + darwin_malloc_err_warning('test_decimal') + + C = import_fresh_module('decimal', fresh=['_decimal']) P = import_fresh_module('decimal', blocked=['_decimal']) orig_sys_decimal = sys.modules['decimal'] diff --git a/Misc/NEWS.d/next/Tests/2021-08-06-00-07-15.bpo-40928.aIwb6G.rst b/Misc/NEWS.d/next/Tests/2021-08-06-00-07-15.bpo-40928.aIwb6G.rst new file mode 100644 index 0000000000..c9a5e1b01e --- /dev/null +++ b/Misc/NEWS.d/next/Tests/2021-08-06-00-07-15.bpo-40928.aIwb6G.rst @@ -0,0 +1,2 @@ +Notify users running test_decimal regression tests on macOS of potential +harmless "malloc can't allocate region" messages spewed by test_decimal. |