1 files changed, 82 insertions, 0 deletions
diff --git a/lib/python2.7/ctypes/test/test_values.py b/lib/python2.7/ctypes/test/test_values.py
new file mode 100644
index 0000000..4cbfd4b
--- /dev/null
+++ b/lib/python2.7/ctypes/test/test_values.py
@@ -0,0 +1,82 @@
+"""
+A testcase which accesses *values* in a dll.
+"""
+
+import unittest
+from ctypes import *
+
+import _ctypes_test
+
+class ValuesTestCase(unittest.TestCase):
+
+    def test_an_integer(self):
+        ctdll = CDLL(_ctypes_test.__file__)
+        an_integer = c_int.in_dll(ctdll, "an_integer")
+        x = an_integer.value
+        self.assertEqual(x, ctdll.get_an_integer())
+        an_integer.value *= 2
+        self.assertEqual(x*2, ctdll.get_an_integer())
+
+    def test_undefined(self):
+        ctdll = CDLL(_ctypes_test.__file__)
+        self.assertRaises(ValueError, c_int.in_dll, ctdll, "Undefined_Symbol")
+
+    class Win_ValuesTestCase(unittest.TestCase):
+        """This test only works when python itself is a dll/shared library"""
+
+        def test_optimizeflag(self):
+            # This test accesses the Py_OptimizeFlag intger, which is
+            # exported by the Python dll.
+
+            # It's value is set depending on the -O and -OO flags:
+            # if not given, it is 0 and __debug__ is 1.
+            # If -O is given, the flag is 1, for -OO it is 2.
+            # docstrings are also removed in the latter case.
+            opt = c_int.in_dll(pydll, "Py_OptimizeFlag").value
+            if __debug__:
+                self.assertEqual(opt, 0)
+            elif ValuesTestCase.__doc__ is not None:
+                self.assertEqual(opt, 1)
+            else:
+                self.assertEqual(opt, 2)
+
+        def test_frozentable(self):
+            # Python exports a PyImport_FrozenModules symbol. This is a
+            # pointer to an array of struct _frozen entries.  The end of the
+            # array is marked by an entry containing a NULL name and zero
+            # size.
+
+            # In standard Python, this table contains a __hello__
+            # module, and a __phello__ package containing a spam
+            # module.
+            class struct_frozen(Structure):
+                _fields_ = [("name", c_char_p),
+                            ("code", POINTER(c_ubyte)),
+                            ("size", c_int)]
+            FrozenTable = POINTER(struct_frozen)
+
+            ft = FrozenTable.in_dll(pydll, "PyImport_FrozenModules")
+            # ft is a pointer to the struct_frozen entries:
+            items = []
+            for entry in ft:
+                # This is dangerous. We *can* iterate over a pointer, but
+                # the loop will not terminate (maybe with an access
+                # violation;-) because the pointer instance has no size.
+                if entry.name is None:
+                    break
+                items.append((entry.name, entry.size))
+            import sys
+            if sys.version_info[:2] >= (2, 3):
+                expected = [("__hello__", 104), ("__phello__", -104), ("__phello__.spam", 104)]
+            else:
+                expected = [("__hello__", 100), ("__phello__", -100), ("__phello__.spam", 100)]
+            self.assertEqual(items, expected)
+
+            from ctypes import _pointer_type_cache
+            del _pointer_type_cache[struct_frozen]
+
+        def test_undefined(self):
+            self.assertRaises(ValueError, c_int.in_dll, pydll, "Undefined_Symbol")
+
+if __name__ == '__main__':
+    unittest.main()