[3.12] gh-84489: C API: Add tests for Py_BuildValue() (GH-110596) (GH-110680)

(cherry picked from commit 5c6e85480ad8365c1b05fdbd678c7867103f7d76)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

1 files changed, 80 insertions, 0 deletions

diff --git a/Lib/test/test_capi/test_misc.py b/Lib/test/test_capi/test_misc.py
index 66d5ebe..cf714e6 100644
--- a/Lib/test/test_capi/test_misc.py
+++ b/Lib/test/test_capi/test_misc.py
@@ -298,6 +298,86 @@ class CAPITest(unittest.TestCase):
             # test _Py_CheckFunctionResult() instead.
             self.assertIn('returned a result with an exception set', err)
 
+    def test_buildvalue(self):
+        # Test Py_BuildValue() with object arguments
+        buildvalue = _testcapi.py_buildvalue
+        self.assertEqual(buildvalue(''), None)
+        self.assertEqual(buildvalue('()'), ())
+        self.assertEqual(buildvalue('[]'), [])
+        self.assertEqual(buildvalue('{}'), {})
+        self.assertEqual(buildvalue('()[]{}'), ((), [], {}))
+        self.assertEqual(buildvalue('O', 1), 1)
+        self.assertEqual(buildvalue('(O)', 1), (1,))
+        self.assertEqual(buildvalue('[O]', 1), [1])
+        self.assertRaises(SystemError, buildvalue, '{O}', 1)
+        self.assertEqual(buildvalue('OO', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('(OO)', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('[OO]', 1, 2), [1, 2])
+        self.assertEqual(buildvalue('{OO}', 1, 2), {1: 2})
+        self.assertEqual(buildvalue('{OOOO}', 1, 2, 3, 4), {1: 2, 3: 4})
+        self.assertEqual(buildvalue('((O))', 1), ((1,),))
+        self.assertEqual(buildvalue('((OO))', 1, 2), ((1, 2),))
+
+        self.assertEqual(buildvalue(' \t,:'), None)
+        self.assertEqual(buildvalue('   O   ', 1), 1)
+        self.assertEqual(buildvalue('\tO\t', 1), 1)
+        self.assertEqual(buildvalue('O,O', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('O, O', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('O,\tO', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('O O', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('O\tO', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('(O,O)', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('(O, O)', 1, 2), (1, 2))
+        self.assertEqual(buildvalue(' ( O O) ', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('\t(\tO\tO)\t', 1, 2), (1, 2))
+        self.assertEqual(buildvalue('[O,O]', 1, 2), [1, 2])
+        self.assertEqual(buildvalue('[O, O]', 1, 2), [1, 2])
+        self.assertEqual(buildvalue(' [ O O] ', 1, 2), [1, 2])
+        self.assertEqual(buildvalue('{O:O}', 1, 2), {1: 2})
+        self.assertEqual(buildvalue('{O:O,O:O}', 1, 2, 3, 4), {1: 2, 3: 4})
+        self.assertEqual(buildvalue('{O: O, O: O}', 1, 2, 3, 4), {1: 2, 3: 4})
+        self.assertEqual(buildvalue(' { O O O O} ', 1, 2, 3, 4), {1: 2, 3: 4})
+        self.assertEqual(buildvalue('\t{\tO\tO\tO\tO}\t', 1, 2, 3, 4), {1: 2, 3: 4})
+
+        self.assertRaises(SystemError, buildvalue, 'O', NULL)
+        self.assertRaises(SystemError, buildvalue, '(O)', NULL)
+        self.assertRaises(SystemError, buildvalue, '[O]', NULL)
+        self.assertRaises(SystemError, buildvalue, '{O}', NULL)
+        self.assertRaises(SystemError, buildvalue, 'OO', 1, NULL)
+        self.assertRaises(SystemError, buildvalue, 'OO', NULL, 2)
+        self.assertRaises(SystemError, buildvalue, '(OO)', 1, NULL)
+        self.assertRaises(SystemError, buildvalue, '(OO)', NULL, 2)
+        self.assertRaises(SystemError, buildvalue, '[OO]', 1, NULL)
+        self.assertRaises(SystemError, buildvalue, '[OO]', NULL, 2)
+        self.assertRaises(SystemError, buildvalue, '{OO}', 1, NULL)
+        self.assertRaises(SystemError, buildvalue, '{OO}', NULL, 2)
+
+    def test_buildvalue_ints(self):
+        # Test Py_BuildValue() with integer arguments
+        buildvalue = _testcapi.py_buildvalue_ints
+        from _testcapi import SHRT_MIN, SHRT_MAX, USHRT_MAX, INT_MIN, INT_MAX, UINT_MAX
+        self.assertEqual(buildvalue('i', INT_MAX), INT_MAX)
+        self.assertEqual(buildvalue('i', INT_MIN), INT_MIN)
+        self.assertEqual(buildvalue('I', UINT_MAX), UINT_MAX)
+
+        self.assertEqual(buildvalue('h', SHRT_MAX), SHRT_MAX)
+        self.assertEqual(buildvalue('h', SHRT_MIN), SHRT_MIN)
+        self.assertEqual(buildvalue('H', USHRT_MAX), USHRT_MAX)
+
+        self.assertEqual(buildvalue('b', 127), 127)
+        self.assertEqual(buildvalue('b', -128), -128)
+        self.assertEqual(buildvalue('B', 255), 255)
+
+        self.assertEqual(buildvalue('c', ord('A')), b'A')
+        self.assertEqual(buildvalue('c', 255), b'\xff')
+        self.assertEqual(buildvalue('c', 256), b'\x00')
+        self.assertEqual(buildvalue('c', -1), b'\xff')
+
+        self.assertEqual(buildvalue('C', 255), chr(255))
+        self.assertEqual(buildvalue('C', 256), chr(256))
+        self.assertEqual(buildvalue('C', sys.maxunicode), chr(sys.maxunicode))
+        self.assertRaises(ValueError, buildvalue, 'C', -1)
+        self.assertRaises(ValueError, buildvalue, 'C', sys.maxunicode+1)
     def test_buildvalue_N(self):
         _testcapi.test_buildvalue_N()