[Python-checkins] r55655 - python/branches/bcannon-objcap/tests/fail/sys_inaccessible.py

[brett.cannon]

Author: brett.cannon
Date: Tue May 29 21:18:55 2007
New Revision: 55655

Added:
   python/branches/bcannon-objcap/tests/fail/sys_inaccessible.py   (contents, props changed)
Log:
Thoroughly check that no modules that are required to exist for the interpreter
to work (and thus imported before importlib takes over) exposes the 'sys'
module.


Added: python/branches/bcannon-objcap/tests/fail/sys_inaccessible.py
==============================================================================
--- (empty file)
+++ python/branches/bcannon-objcap/tests/fail/sys_inaccessible.py	Tue May 29 21:18:55 2007
@@ -0,0 +1,70 @@
+"""None of the modules required for the interpreter to work should expose the
+'sys' module (nor the modules that they import)."""
+import encodings
+module_type = type(encodings)
+examined = set()
+def check_imported_modules(module):
+    """Recursively check that the module (and the modules it imports) do not
+    expose the 'sys' module."""
+    assert isinstance(module, module_type)
+    if module.__name__ == 'sys':
+        raise Exception
+    for attr in module.__dict__.values():
+        if isinstance(attr, module_type) and attr.__name__ not in examined:
+            examined.add(attr.__name__)
+            check_imported_modules(attr)
+
+
+try:
+    import __builtin__
+    __builtin__.sys
+    check_imported_modules(__builtin__)
+except AttributeError:
+    pass
+else:
+    raise Exception
+
+try:
+    import __main__
+    __main__.sys
+    check_imported_modules(__main__)
+except AttributeError:
+    pass
+else:
+    raise Exception
+
+try:
+    import exceptions
+    exceptions.sys
+    check_imported_modules(exceptions)
+except AttributeError:
+    pass
+else:
+    raise Exception
+
+try:
+    import encodings
+    encodings.sys
+    check_imported_modules(encodings)
+except AttributeError:
+    pass
+else:
+    raise Exception
+
+try:
+    import codecs
+    codecs.sys
+    check_imported_modules(codecs)
+except AttributeError:
+    pass
+else:
+    raise Exception
+
+try:
+    import _codecs
+    _codecs.sys
+    check_imported_modules(_codecs)
+except AttributeError:
+    pass
+else:
+    raise Exception