Skip to content

Commit 2912970

Browse files
committed
gh-113212: Test supercheck error message
1 parent 478cd1e commit 2912970

File tree

1 file changed

+25
-0
lines changed

1 file changed

+25
-0
lines changed

Lib/test/test_super.py

Lines changed: 25 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -396,6 +396,31 @@ def method(self):
396396
with self.assertRaisesRegex(TypeError, "argument 1 must be a type"):
397397
C().method()
398398

399+
def test_supercheck_fail(self):
400+
class C:
401+
def method(self, type_, obj):
402+
return super(type_, obj).method()
403+
404+
c = C()
405+
err_msg = (
406+
r"super\(type, obj\): obj \({} {}\) is not "
407+
r"an instance or subtype of type \({}\)."
408+
)
409+
410+
cases = (
411+
(int, c, int.__name__, C.__name__, "instance of"),
412+
(C, list(), C.__name__, list.__name__, "instance of"), # obj is instance of type
413+
(C, list, C.__name__, list.__name__, "type"), # obj is type itself
414+
)
415+
416+
for case in cases:
417+
with self.subTest(case=case):
418+
type_, obj, type_str, obj_str, instance_or_type = case
419+
regex = err_msg.format(instance_or_type, obj_str, type_str)
420+
421+
with self.assertRaisesRegex(TypeError, regex):
422+
c.method(type_, obj)
423+
399424
def test_super___class__(self):
400425
class C:
401426
def method(self):

0 commit comments

Comments
 (0)