youknowone · Jun 25, 2026 · Jun 25, 2026 · Jun 25, 2026 · Jun 25, 2026 · Jun 25, 2026
diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py
@@ -482,11 +482,8 @@ def test_expandtabs(self):
         self.checkequal('  a\n b', ' \ta\n\tb', 'expandtabs', 1)
 
         self.checkraises(TypeError, 'hello', 'expandtabs', 42, 42)
-        # TODO: RUSTPYTHON; expandtabs overflow checks
-        # if sys.maxsize < (1 << 32) and struct.calcsize('P') == 4:
-        #
         # This test is only valid when sizeof(int) == sizeof(void*) == 4.
-        if sys.maxsize < (1 << 32) and struct.calcsize('P') == 4 and False:
+        if sys.maxsize < (1 << 32) and struct.calcsize('P') == 4:
             self.checkraises(OverflowError,
                              '\ta\n\tb', 'expandtabs', sys.maxsize)
 

diff --git a/Lib/test/test_baseexception.py b/Lib/test/test_baseexception.py
@@ -79,10 +79,8 @@ def test_inheritance(self):
 
         # Underscore-prefixed (private) exceptions don't need to be documented
         exc_set = set(e for e in exc_set if not e.startswith('_'))
-        # RUSTPYTHON specific
-        exc_set.discard("JitError")
-        # XXX: RUSTPYTHON; IncompleteInputError will be officially introduced in Python 3.15
-        exc_set.discard("IncompleteInputError")
+        exc_set.discard("JitError")  # XXX: RUSTPYTHON specific
+        exc_set.discard("IncompleteInputError")  # XXX: RUSTPYTHON; IncompleteInputError will be officially introduced in Python 3.15
         self.assertEqual(len(exc_set), 0, "%s not accounted for" % exc_set)
 
     interface_tests = ("length", "args", "str", "repr")

diff --git a/Lib/test/test_bigmem.py b/Lib/test/test_bigmem.py
@@ -9,7 +9,12 @@
 """
 
 from test import support
-from test.support import bigmemtest, _1G, _2G, _4G
+from test.support import bigmemtest, _1G, _2G, _4G, import_helper
+# _testcapi = import_helper.import_module('_testcapi')
+try:  # TODO: RUSTPYTHON
+    import _testcapi
+except ImportError:
+    _testcapi = None
 
 import unittest
 import operator
@@ -784,17 +789,14 @@ def test_title(self, size):
     def test_swapcase(self, size):
         self._test_swapcase(size)
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
-    @bigmemtest(size=_2G, memuse=2)
-    def test_isspace(self, size):
-        super().test_isspace(size)
+    @unittest.expectedFailure  # TODO: RUSTPYTHON
+    def test_isspace(self):
+        return super().test_isspace()
+
+    @unittest.expectedFailure  # TODO: RUSTPYTHON
+    def test_istitle(self):
+        return super().test_istitle()
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
-    @bigmemtest(size=_2G, memuse=2)
-    def test_istitle(self, size):
-        super().test_istitle(size)
 
 class BytearrayTest(unittest.TestCase, BaseStrTest):
 
@@ -821,17 +823,13 @@ def test_swapcase(self, size):
     test_hash = None
     test_split_large = None
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
-    @bigmemtest(size=_2G, memuse=2)
-    def test_isspace(self, size):
-        super().test_isspace(size)
+    @unittest.expectedFailure  # TODO: RUSTPYTHON
+    def test_isspace(self):
+        return super().test_isspace()
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
-    @bigmemtest(size=_2G, memuse=2)
-    def test_istitle(self, size):
-        super().test_istitle(size)
+    @unittest.expectedFailure  # TODO: RUSTPYTHON
+    def test_istitle(self):
+        return super().test_istitle()
 
 class TupleTest(unittest.TestCase):
 
@@ -1280,6 +1278,27 @@ def test_dict(self, size):
         d[size] = 1
 
 
+class ImmortalityTest(unittest.TestCase):
+
+    @bigmemtest(size=_2G, memuse=pointer_size * 9/8)
+    def test_stickiness(self, size):
+        """Check that immortality is "sticky", so that
+           once an object is immortal it remains so."""
+        if size < _2G:
+            # Not enough memory to cause immortality on overflow
+            return
+        o1 = o2 = o3 = o4 = o5 = o6 = o7 = o8 = object()
+        l = [o1] * (size-20)
+        self.assertFalse(_testcapi.is_immortal(o1))
+        for _ in range(30):
+            l.append(l[0])
+        self.assertTrue(_testcapi.is_immortal(o1))
+        del o2, o3, o4, o5, o6, o7, o8
+        self.assertTrue(_testcapi.is_immortal(o1))
+        del l
+        self.assertTrue(_testcapi.is_immortal(o1))
+
+
 if __name__ == '__main__':
     if len(sys.argv) > 1:
         support.set_memlimit(sys.argv[1])

diff --git a/Lib/test/test_dtrace.py b/Lib/test/test_dtrace.py
@@ -8,7 +8,7 @@
 import unittest
 
 from test import support
-from test.support import findfile
+from test.support import findfile, MS_WINDOWS
 
 
 if not support.has_subprocess_support:
@@ -103,6 +103,7 @@ class SystemTapBackend(TraceBackend):
     COMMAND = ["stap", "-g"]
 
 
+@unittest.skipIf(MS_WINDOWS, "Tests not compliant with trace on Windows.")
 class TraceTests:
     # unittest.TestCase options
     maxDiff = None
@@ -159,43 +160,11 @@ class DTraceNormalTests(TraceTests, unittest.TestCase):
     backend = DTraceBackend()
     optimize_python = 0
 
-    @unittest.expectedFailureIfWindows('TODO: RUSTPYTHON')
-    def test_function_entry_return(self):
-        return super().test_function_entry_return()
-
-    @unittest.expectedFailureIfWindows('TODO: RUSTPYTHON')
-    def test_verify_call_opcodes(self):
-        return super().test_verify_call_opcodes()
-
-    @unittest.expectedFailureIfWindows('TODO: RUSTPYTHON')
-    def test_gc(self):
-        return super().test_gc()
-
-    @unittest.expectedFailureIfWindows('TODO: RUSTPYTHON')
-    def test_line(self):
-        return super().test_line()
-
 
 class DTraceOptimizedTests(TraceTests, unittest.TestCase):
     backend = DTraceBackend()
     optimize_python = 2
 
-    @unittest.expectedFailureIfWindows('TODO: RUSTPYTHON')
-    def test_function_entry_return(self):
-        return super().test_function_entry_return()
-
-    @unittest.expectedFailureIfWindows('TODO: RUSTPYTHON')
-    def test_verify_call_opcodes(self):
-        return super().test_verify_call_opcodes()
-
-    @unittest.expectedFailureIfWindows('TODO: RUSTPYTHON')
-    def test_gc(self):
-        return super().test_gc()
-
-    @unittest.expectedFailureIfWindows('TODO: RUSTPYTHON')
-    def test_line(self):
-        return super().test_line()
-
 
 class SystemTapNormalTests(TraceTests, unittest.TestCase):
     backend = SystemTapBackend()

diff --git a/Lib/test/test_exception_group.py b/Lib/test/test_exception_group.py
@@ -1,4 +1,4 @@
-import collections.abc
+import collections
 import types
 import unittest
 from test.support import skip_emscripten_stack_overflow, skip_wasi_stack_overflow, exceeds_recursion_limit
@@ -194,6 +194,79 @@ class MyEG(ExceptionGroup):
                       "MyEG('flat', [ValueError(1), TypeError(2)]), "
                       "TypeError(2)])"))
 
+    @unittest.expectedFailure  # TODO: RUSTPYTHON; AssertionError: Tuples differ: ('test', (ValueError(1), TypeError(2))) != ('test', [])
+    def test_exceptions_mutation(self):
+        class MyEG(ExceptionGroup):
+            pass
+
+        excs = [ValueError(1), TypeError(2)]
+        eg = MyEG('test', excs)
+
+        self.assertEqual(repr(eg), "MyEG('test', [ValueError(1), TypeError(2)])")
+        excs.clear()
+
+        # Ensure that clearing the exceptions sequence doesn't change the repr.
+        self.assertEqual(repr(eg), "MyEG('test', [ValueError(1), TypeError(2)])")
+
+        # Ensure that the args are still as passed.
+        self.assertEqual(eg.args, ('test', []))
+
+        excs = (ValueError(1), KeyboardInterrupt(2))
+        eg = BaseExceptionGroup('test', excs)
+
+        # Ensure that immutable sequences still work fine.
+        self.assertEqual(
+            repr(eg),
+            "BaseExceptionGroup('test', (ValueError(1), KeyboardInterrupt(2)))"
+        )
+
+        # Test non-standard custom sequences.
+        excs = collections.deque([ValueError(1), TypeError(2)])
+        eg = ExceptionGroup('test', excs)
+
+        self.assertEqual(
+            repr(eg),
+            "ExceptionGroup('test', deque([ValueError(1), TypeError(2)]))"
+        )
+        excs.clear()
+
+        # Ensure that clearing the exceptions sequence doesn't change the repr.
+        self.assertEqual(
+            repr(eg),
+            "ExceptionGroup('test', deque([ValueError(1), TypeError(2)]))"
+        )
+
+    @unittest.expectedFailure  # TODO: RUSTPYTHON; AssertionError: TypeError not raised
+    def test_repr_raises(self):
+        class MySeq(collections.abc.Sequence):
+            def __init__(self, raises):
+                self.raises = raises
+
+            def __len__(self):
+                return 1
+
+            def __getitem__(self, index):
+                if index == 0:
+                    return ValueError(1)
+                raise IndexError
+
+            def __repr__(self):
+                if self.raises:
+                    raise self.raises
+                return None
+
+        seq = MySeq(None)
+        with self.assertRaisesRegex(
+            TypeError,
+            r"__repr__ returned non-string \(type NoneType\)"
+        ):
+            ExceptionGroup("test", seq)
+
+        seq = MySeq(ValueError)
+        with self.assertRaises(ValueError):
+            BaseExceptionGroup("test", seq)
+
+
 
 def create_simple_eg():
     excs = []

diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
@@ -2528,6 +2528,31 @@ def test_incorrect_constructor(self):
         args = ("bad.py", 1, 2, "abcdefg", 1)
         self.assertRaises(TypeError, SyntaxError, "bad bad", args)
 
+    @unittest.expectedFailure  # TODO: RUSTPYTHON; AssertionError: 2 is not None
+    def test_syntax_error_memory_leak(self):
+        # gh-146250: memory leak with re-initialization of SyntaxError
+        e = SyntaxError("msg", ("file.py", 1, 2, "txt", 2, 3))
+        e.__init__("new_msg", ("new_file.py", 2, 3, "new_txt", 3, 4))
+        self.assertEqual(e.msg, "new_msg")
+        self.assertEqual(e.args, ("new_msg", ("new_file.py", 2, 3, "new_txt", 3, 4)))
+        self.assertEqual(e.filename, "new_file.py")
+        self.assertEqual(e.lineno, 2)
+        self.assertEqual(e.offset, 3)
+        self.assertEqual(e.text, "new_txt")
+        self.assertEqual(e.end_lineno, 3)
+        self.assertEqual(e.end_offset, 4)
+
+        e = SyntaxError("msg", ("file.py", 1, 2, "txt", 2, 3))
+        e.__init__("new_msg", ("new_file.py", 2, 3, "new_txt"))
+        self.assertEqual(e.msg, "new_msg")
+        self.assertEqual(e.args, ("new_msg", ("new_file.py", 2, 3, "new_txt")))
+        self.assertEqual(e.filename, "new_file.py")
+        self.assertEqual(e.lineno, 2)
+        self.assertEqual(e.offset, 3)
+        self.assertEqual(e.text, "new_txt")
+        self.assertIsNone(e.end_lineno)
+        self.assertIsNone(e.end_offset)
+
 
 class TestInvalidExceptionMatcher(unittest.TestCase):
     def test_except_star_invalid_exception_type(self):

diff --git a/Lib/test/test_fileutils.py b/Lib/test/test_fileutils.py
@@ -0,0 +1,30 @@
+# Run tests for functions in Python/fileutils.c.
+
+import os
+import os.path
+import unittest
+from test.support import import_helper
+
+# Skip this test if the _testcapi module isn't available.
+_testcapi = import_helper.import_module('_testinternalcapi')
+
+
+class PathTests(unittest.TestCase):
+
+    def test_capi_normalize_path(self):
+        if os.name == 'nt':
+            raise unittest.SkipTest('Windows has its own helper for this')
+        else:
+            from test.test_posixpath import PosixPathTest as posixdata
+            tests = posixdata.NORMPATH_CASES
+        for filename, expected in tests:
+            if not os.path.isabs(filename):
+                continue
+            with self.subTest(filename):
+                result = _testcapi.normalize_path(filename)
+                self.assertEqual(result, expected,
+                    msg=f'input: {filename!r} expected output: {expected!r}')
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/Lib/test/test_zipimport_support.py b/Lib/test/test_zipimport_support.py
@@ -37,9 +37,8 @@
 def _run_object_doctest(obj, module):
     from test.support.rustpython import DocTestChecker  # TODO: RUSTPYTHON
     finder = doctest.DocTestFinder(verbose=verbose, recurse=False)
-    # TODO: RUSTPYTHON
-    # runner = doctest.DocTestRunner(verbose=verbose)
-    runner = doctest.DocTestRunner(verbose=verbose, checker=DocTestChecker())
+    runner = doctest.DocTestRunner(verbose=verbose)
+    runner = doctest.DocTestRunner(verbose=verbose, checker=DocTestChecker())  # TODO: RUSTPYTHON
     # Use the object's fully qualified name if it has one
     # Otherwise, use the module's name
     try: