Up the limits for recursion tests

Author: markshannon

Lib/test/list_tests.py

@@ -62,7 +62,7 @@ def test_repr(self):
     @skip_emscripten_stack_overflow()
     def test_repr_deep(self):
         a = self.type2test([])
-        for i in range(get_c_recursion_limit() * 10):
+        for i in range(100_000):
             a = self.type2test([a])
         self.assertRaises(RecursionError, repr, a)
 

Lib/test/mapping_tests.py

@@ -625,7 +625,7 @@ def __repr__(self):
     @skip_emscripten_stack_overflow()
     def test_repr_deep(self):
         d = self._empty_mapping()
-        for i in range(get_c_recursion_limit() * 5):
+        for i in range(100_000):
             d0 = d
             d = self._empty_mapping()
             d[1] = d0

Lib/test/test_compile.py

@@ -714,8 +714,8 @@ def test_yet_more_evil_still_undecodable(self):
     def test_compiler_recursion_limit(self):
         # Compiler frames are small
         limit = get_c_recursion_limit() * 3 // 2
-        fail_depth = limit * 10
-        crash_depth = limit * 50
+        fail_depth = limit * 50
+        crash_depth = limit * 200
         success_depth = limit
 
         def check_limit(prefix, repeated, mode="single"):

Lib/test/test_dict.py

@@ -597,7 +597,7 @@ def __repr__(self):
     @support.skip_emscripten_stack_overflow()
     def test_repr_deep(self):
         d = {}
-        for i in range(get_c_recursion_limit() * 10):
+        for i in range(100_000):
             d = {1: d}
         self.assertRaises(RecursionError, repr, d)
 

Lib/test/test_exception_group.py

@@ -460,7 +460,7 @@ def test_basics_split_by_predicate__match(self):
 class DeepRecursionInSplitAndSubgroup(unittest.TestCase):
     def make_deep_eg(self):
         e = TypeError(1)
-        for i in range(get_c_recursion_limit() * 10):
+        for i in range(100_000):
             e = ExceptionGroup('eg', [e])
         return e
 

Lib/test/test_isinstance.py

@@ -267,15 +267,13 @@ def test_subclass_tuple(self):
     def test_subclass_recursion_limit(self):
         # make sure that issubclass raises RecursionError before the C stack is
         # blown
-        with support.infinite_recursion():
-            self.assertRaises(RecursionError, blowstack, issubclass, str, str)
+        self.assertRaises(RecursionError, blowstack, issubclass, str, str)
 
     @support.skip_emscripten_stack_overflow()
     def test_isinstance_recursion_limit(self):
         # make sure that issubclass raises RecursionError before the C stack is
         # blown
-        with support.infinite_recursion():
-            self.assertRaises(RecursionError, blowstack, isinstance, '', str)
+        self.assertRaises(RecursionError, blowstack, isinstance, '', str)
 
     def test_subclass_with_union(self):
         self.assertTrue(issubclass(int, int | float | int))
@@ -355,8 +353,9 @@ def blowstack(fxn, arg, compare_to):
     # Make sure that calling isinstance with a deeply nested tuple for its
     # argument will raise RecursionError eventually.
     tuple_arg = (compare_to,)
-    for cnt in range(support.exceeds_recursion_limit()):
-        tuple_arg = (tuple_arg,)
+    while True:
+        for _ in range(100):
+            tuple_arg = (tuple_arg,)
         fxn(arg, tuple_arg)
 
 

Lib/test/test_userdict.py

@@ -213,11 +213,7 @@ class G(collections.UserDict):
         else:
             self.fail("g[42] didn't raise KeyError")
 
-    # Decorate existing test with recursion limit, because
-    # the test is for C structure, but `UserDict` is a Python structure.
-    test_repr_deep = support.infinite_recursion(25)(
-        mapping_tests.TestHashMappingProtocol.test_repr_deep,
-    )
+    test_repr_deep = mapping_tests.TestHashMappingProtocol.test_repr_deep
 
 
 if __name__ == "__main__":

Lib/test/test_userlist.py

@@ -69,9 +69,7 @@ def test_userlist_copy(self):
 
     # Decorate existing test with recursion limit, because
     # the test is for C structure, but `UserList` is a Python structure.
-    test_repr_deep = support.infinite_recursion(25)(
-        list_tests.CommonTest.test_repr_deep,
-    )
+    test_repr_deep = list_tests.CommonTest.test_repr_deep
 
 if __name__ == "__main__":
     unittest.main()