bpo-42260: Add _PyConfig_FromDict() (GH-23167)

* Rename config_as_dict() to _PyConfig_AsDict().
* Add 'module_search_paths_set' to _PyConfig_AsDict().
* Add _PyConfig_FromDict().
* Add get_config() and set_config() to _testinternalcapi.
* Add config_check_consistency().

1 files changed, 14 insertions, 0 deletions

diff --git a/Lib/test/test_embed.py b/Lib/test/test_embed.py
index 36a0e77..9182061 100644
--- a/Lib/test/test_embed.py
+++ b/Lib/test/test_embed.py
@@ -30,6 +30,8 @@ API_PYTHON = 2
 # _PyCoreConfig_InitIsolatedConfig()
 API_ISOLATED = 3
 
+MAX_HASH_SEED = 4294967295
+
 
 def debug_build(program):
     program = os.path.basename(program)
@@ -382,6 +384,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
         'exec_prefix': GET_DEFAULT_CONFIG,
         'base_exec_prefix': GET_DEFAULT_CONFIG,
         'module_search_paths': GET_DEFAULT_CONFIG,
+        'module_search_paths_set': 1,
         'platlibdir': sys.platlibdir,
 
         'site_import': 1,
@@ -1408,6 +1411,17 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
         # ignore output
 
 
+class SetConfigTests(unittest.TestCase):
+    def test_set_config(self):
+        # bpo-42260: Test _PyInterpreterState_SetConfig()
+        cmd = [sys.executable, '-I', '-m', 'test._test_embed_set_config']
+        proc = subprocess.run(cmd,
+                              stdout=subprocess.PIPE,
+                              stderr=subprocess.PIPE)
+        self.assertEqual(proc.returncode, 0,
+                         (proc.returncode, proc.stdout, proc.stderr))
+
+
 class AuditingTests(EmbeddingTestsMixin, unittest.TestCase):
     def test_open_code_hook(self):
         self.run_embedded_interpreter("test_open_code_hook")