bpo-35233: Rewrite test_embed.InitConfigTests (GH-10524)

* Fix _PyCoreConfig_SetGlobalConfig(): set also Py_FrozenFlag
* Fix _PyCoreConfig_AsDict(): export also xoptions
* Add _Py_GetGlobalVariablesAsDict() and _testcapi.get_global_config()
* test.pythoninfo: dump also global configuration variables
* _testembed now serializes global, core and main configurations
  using JSON to reuse _Py_GetGlobalVariablesAsDict(),
  _PyCoreConfig_AsDict() and _PyMainInterpreterConfig_AsDict(),
  rather than duplicating code.
* test_embed.InitConfigTests now test much more configuration
  variables

1 files changed, 11 insertions, 14 deletions

diff --git a/Lib/test/pythoninfo.py b/Lib/test/pythoninfo.py
index 2b5d6e2..9257fdf 100644
--- a/Lib/test/pythoninfo.py
+++ b/Lib/test/pythoninfo.py
@@ -535,24 +535,21 @@ def collect_gdbm(info_add):
 
 
 def collect_get_config(info_add):
-    # Dump _PyCoreConfig and _PyMainInterpreterConfig
+    # Dump global configuration variables, _PyCoreConfig
+    # and _PyMainInterpreterConfig
     try:
-        from _testcapi import get_coreconfig
+        from _testcapi import get_global_config, get_core_config, get_main_config
     except ImportError:
-        pass
-    else:
-        config = get_coreconfig()
-        for key in sorted(config):
-            info_add('core_config[%s]' % key, repr(config[key]))
+        return
 
-    try:
-        from _testcapi import get_mainconfig
-    except ImportError:
-        pass
-    else:
-        config = get_mainconfig()
+    for prefix, get_config_func in (
+        ('global_config', get_global_config),
+        ('core_config', get_core_config),
+        ('main_config', get_main_config),
+    ):
+        config = get_config_func()
         for key in sorted(config):
-            info_add('main_config[%s]' % key, repr(config[key]))
+            info_add('%s[%s]' % (prefix, key), repr(config[key]))
 
 
 def collect_info(info):