diff options
Diffstat (limited to 'Lib/test/support/__init__.py')
| -rw-r--r-- | Lib/test/support/__init__.py | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py index 351d832a26d..48e74adcce3 100644 --- a/Lib/test/support/__init__.py +++ b/Lib/test/support/__init__.py @@ -945,6 +945,31 @@ def check_sizeof(test, o, size): % (type(o), result, size) test.assertEqual(result, size, msg) +def subTests(arg_names, arg_values, /, *, _do_cleanups=False): + """Run multiple subtests with different parameters. + """ + single_param = False + if isinstance(arg_names, str): + arg_names = arg_names.replace(',',' ').split() + if len(arg_names) == 1: + single_param = True + arg_values = tuple(arg_values) + def decorator(func): + if isinstance(func, type): + raise TypeError('subTests() can only decorate methods, not classes') + @functools.wraps(func) + def wrapper(self, /, *args, **kwargs): + for values in arg_values: + if single_param: + values = (values,) + subtest_kwargs = dict(zip(arg_names, values)) + with self.subTest(**subtest_kwargs): + func(self, *args, **kwargs, **subtest_kwargs) + if _do_cleanups: + self.doCleanups() + return wrapper + return decorator + #======================================================================= # Decorator/context manager for running a code in a different locale, # correctly resetting it afterwards. @@ -1084,7 +1109,7 @@ def set_memlimit(limit: str) -> None: global real_max_memuse memlimit = _parse_memlimit(limit) if memlimit < _2G - 1: - raise ValueError('Memory limit {limit!r} too low to be useful') + raise ValueError(f'Memory limit {limit!r} too low to be useful') real_max_memuse = memlimit memlimit = min(memlimit, MAX_Py_ssize_t) @@ -2358,7 +2383,7 @@ def infinite_recursion(max_depth=None): # very deep recursion. max_depth = 20_000 elif max_depth < 3: - raise ValueError("max_depth must be at least 3, got {max_depth}") + raise ValueError(f"max_depth must be at least 3, got {max_depth}") depth = get_recursion_depth() depth = max(depth - 1, 1) # Ignore infinite_recursion() frame. limit = depth + max_depth |