Adjust a couple of tests

Author: markshannon

Lib/test/test_ast.py

@@ -1126,7 +1126,7 @@ def next(self):
     def test_ast_recursion_limit(self):
         fail_depth = support.EXCEEDS_RECURSION_LIMIT
         crash_depth = 100_000
-        success_depth = 1200
+        success_depth = int(support.Py_C_RECURSION_LIMIT * 0.8)
         if _testinternalcapi is not None:
             remaining = _testinternalcapi.get_c_recursion_remaining()
             success_depth = min(success_depth, remaining)

Lib/test/test_sys_settrace.py

@@ -3037,10 +3037,8 @@ def test_trace_unpack_long_sequence(self):
         self.assertEqual(counts, {'call': 1, 'line': 301, 'return': 1})
 
     def test_trace_lots_of_globals(self):
-        count = 1000
-        if _testinternalcapi is not None:
-            remaining = _testinternalcapi.get_c_recursion_remaining()
-            count = min(count, remaining)
+
+        count = min(1000, int(support.Py_C_RECURSION_LIMIT * 0.8))
 
         code = """if 1:
             def f():