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-rw-r--r--Lib/test/support/__init__.py17
1 files changed, 16 insertions, 1 deletions
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index 1d0f11f..b9fda11 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -88,7 +88,7 @@ __all__ = [
"skip_unless_symlink", "requires_gzip", "requires_bz2", "requires_lzma",
"bigmemtest", "bigaddrspacetest", "cpython_only", "get_attribute",
"requires_IEEE_754", "skip_unless_xattr", "requires_zlib",
- "anticipate_failure", "load_package_tests",
+ "anticipate_failure", "load_package_tests", "detect_api_mismatch",
# sys
"is_jython", "check_impl_detail",
# network
@@ -2184,6 +2184,21 @@ def fs_is_case_insensitive(directory):
return False
+def detect_api_mismatch(ref_api, other_api, *, ignore=None):
+ """Returns the set of items in ref_api not in other_api, except for a
+ defined list of items to be ignored in this check.
+
+ By default this skips private attributes beginning with '_' but
+ includes all magic methods, i.e. those starting and ending in '__'.
+ """
+ missing_items = set(dir(ref_api)) - set(dir(other_api))
+ if ignore:
+ missing_items -= set(ignore)
+ missing_items = set(m for m in missing_items
+ if not m.startswith('_') or m.endswith('__'))
+ return missing_items
+
+
class SuppressCrashReport:
"""Try to prevent a crash report from popping up.