Add test_incompatible_extension_modules_hint

Signed-off-by: Filipe Laíns <lains@riseup.net>

Author: FFY00

Lib/test/test_traceback.py

@@ -9,6 +9,7 @@
 import builtins
 import unittest
 import unittest.mock
+import os
 import re
 import tempfile
 import random
@@ -19,7 +20,7 @@
 import shutil
 from test.support import (Error, captured_output, cpython_only, ALWAYS_EQ,
                           requires_debug_ranges, has_no_debug_ranges,
-                          requires_subprocess)
+                          requires_subprocess, os_helper)
 from test.support.os_helper import TESTFN, temp_dir, unlink
 from test.support.script_helper import assert_python_ok, assert_python_failure, make_script
 from test.support.import_helper import forget
@@ -5220,6 +5221,23 @@ def test_find_incompatible_extension_modules(self):
                 'If this is a false positive, define SHLIB_SUFFIX in sysconfig.'
             ))
 
+    @unittest.skipIf(not importlib.machinery.EXTENSION_SUFFIXES, 'Platform does not support extension modules')
+    def test_incompatible_extension_modules_hint(self):
+        untagged_suffix = importlib.machinery.EXTENSION_SUFFIXES[-1]
+        with os_helper.temp_dir() as tmp:
+            # create a module with a incompatible ABI tag
+            incompatible_module = os.path.join(tmp, f'foo.some-abi{untagged_suffix}')
+            open(incompatible_module, "wb").close()
+            # try importing it
+            code = f'''
+                import sys
+                sys.path.insert(0, {tmp!r})
+                import foo
+            '''
+            _, _, stderr = assert_python_failure('-c', code, __cwd=tmp)
+        hint = b'Although a module with this name was found for a different Python version (some-abi).'
+        self.assertIn(hint, stderr)
+
 
 class TestColorizedTraceback(unittest.TestCase):
     maxDiff = None