python: add heavier tests for setvalue

Ensure that invalid types are not silently ignored (and test to avoid
segfaults).

python/t/300-setvalue-types.py

@@ -0,0 +1,80 @@
+# Test various possible types for assignment to setvalue
+# Copyright (C) 2014 Peter Wu <peter@lekensteyn.nl>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+import hivex
+from hivex.hive_types import *
+import os
+
+srcdir = "."
+if "srcdir" in os.environ and os.environ["srcdir"]:
+    srcdir = os.environ["srcdir"]
+
+h = hivex.Hivex ("%s/../images/minimal" % srcdir,
+                 write = True)
+
+def set_value (key = "test key", t = REG_BINARY, value = b"Val"):
+    global h
+    h.node_set_value (h.root (), {
+        "key": key,
+        "t": t,
+        "value": value
+    })
+
+def test_pass (key = "test key", t = REG_BINARY, value = b"Val"):
+    global h
+    set_value (key, t, value)
+    val = h.node_get_value (h.root (), key)
+    ret_type, ret_value = h.value_value (val)
+    assert t == ret_type, \
+        "expected type {0}, got {1}".format(t, ret_type)
+    assert value == ret_value, \
+        "expected value {0}, got {1}".format(value, ret_value)
+
+def test_exception (exception_type, **kwargs):
+    try:
+        set_value (**kwargs)
+        raise AssertionError("expected {0}".format(exception_type))
+    except exception_type:
+        pass
+
+
+# Good weather tests
+# Accept either bytes or unicode for ASCII string
+# TODO: fix node_get_value to handle UTF-16 string in bytes
+#test_pass (t = REG_BINARY,  key = b"\x01\x02")
+test_pass (t = REG_SZ,      key = u"ASCII key")
+# Try a byte with upper bit set
+test_pass (t = REG_DWORD,   value = b"\xaa\xbb\xcc")
+
+
+# Bad weather tests
+# Invalid 'key' type
+test_exception (TypeError, key = 1)
+test_exception (TypeError, key = 1)
+# TODO: should non-ASCII strings be rejected?
+#test_exception (ValueError, key = u"Euro: \u20ac")
+
+# Invalid 't' type
+test_exception (TypeError, t = b"meh")
+
+# Invalid 'value' types
+test_exception (TypeError, t = REG_BINARY,      value = 1)
+test_exception (TypeError, t = REG_DWORD,       value = 1)
+test_exception (TypeError, t = REG_SZ,          value = 1)
+test_exception (TypeError, t = REG_DWORD,       value = None)
+# Unicode strings should be rejected, bytes only!
+test_exception (TypeError, t = REG_SZ,          value = u"some text")