add some test

Author: Locked-chess-official

Lib/runpy.py

@@ -156,7 +156,7 @@ def _get_module_details(mod_name, error=ImportError):
         if (d := _get_possible_name_list(mod_name)):
             from traceback import _calculate_closed_name
             if (suggestion := _calculate_closed_name(mod_name, d)):
-                message += ". Did you mean: %r" % suggestion
+                message += ". Did you mean: %r?" % suggestion
         raise error(message)
     if spec.submodule_search_locations is not None:
         if mod_name == "__main__" or mod_name.endswith(".__main__"):

Lib/test/test_cmd_line_script.py

@@ -771,7 +771,7 @@ def test_consistent_sys_path_for_module_execution(self):
                 "-Im", "script_pkg", cwd=work_dir
             )
             traceback_lines = stderr.decode().splitlines()
-            self.assertIn("No module named script_pkg", traceback_lines[-1])
+            self.assertIn("No module named 'script_pkg'", traceback_lines[-1])
 
     def test_nonexisting_script(self):
         # bpo-34783: "./python script.py" must not crash
@@ -829,6 +829,11 @@ def test_zipfile_run_filter_syntax_warnings_by_module(self):
             )
             self.assertEqual(err.count(b': SyntaxWarning: '), 12)
 
+    def test_typo_in_module_name_suggests_similar_module(self):
+        # python -m randon  -> expect suggestion for 'random'
+        rc, out, err = assert_python_failure("-m", "randon")
+        self.assertIn(b"No module named 'randon'", err)
+        self.assertIn(b"Did you mean: 'random'?", err)
 
 def tearDownModule():
     support.reap_children()

Lib/test/test_pdb.py

@@ -4210,7 +4210,7 @@ def test_module_without_a_main(self):
         stdout, stderr = self._run_pdb(
             ['-m', module_name], "", expected_returncode=1
         )
-        self.assertIn("ImportError: No module named t_main.__main__;", stdout)
+        self.assertIn("ImportError: No module named 't_main.__main__'", stdout)
 
     def test_package_without_a_main(self):
         pkg_name = 't_pkg'
@@ -4231,7 +4231,7 @@ def test_package_without_a_main(self):
     def test_nonexistent_module(self):
         assert not os.path.exists(os_helper.TESTFN)
         stdout, stderr = self._run_pdb(["-m", os_helper.TESTFN], "", expected_returncode=1)
-        self.assertIn(f"ImportError: No module named {os_helper.TESTFN}", stdout)
+        self.assertIn(f"ImportError: No module named {os_helper.TESTFN!r}", stdout)
 
     def test_dir_as_script(self):
         with os_helper.temp_dir() as temp_dir: