ocaml: Add unit test for new RLenValue type

[hivex.git] / ocaml / t / hivex_120_rlenvalue.ml

diff --git a/ocaml/t/hivex_120_rlenvalue.ml b/ocaml/t/hivex_120_rlenvalue.ml
new file mode 100644 (file)
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+++ b/ocaml/t/hivex_120_rlenvalue.ml
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+(* hivex OCaml bindings
+ * Copyright (C) 2009-2010 Red Hat Inc.
+ *
+ * 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.
+ *)
+
+(* Demonstrate value_data_cell_offset by looking at the value data at
+ * "\$$$PROTO.HIV\ModerateValueParent\33Bytes", verified to be at file
+ * offset 8680 (0x21e8) of the hive rlenvalue_test_hive.  The returned
+ * length and offset for this value cell should be 37 bytes, position
+ * 8712.
+ *)
+
+open Unix
+open Printf
+let (//) = Filename.concat
+
+let () =
+  let h = Hivex.open_file "../images/rlenvalue_test_hive" [] in
+  let root = Hivex.root h in
+  let moderate_value_node = Hivex.node_get_child h root "ModerateValueParent" in
+  let moderate_value_value = Hivex.node_get_value h moderate_value_node "33Bytes" in
+  let (data_len, data_off) = Hivex.value_data_cell_offset h moderate_value_value in
+  assert ( (data_off == (Obj.magic 8712:Hivex.value)) && (data_len == 37) );
+
+  Hivex.close h;
+
+  (* Gc.compact is a good way to ensure we don't have
+   * heap corruption or double-freeing.
+   *)
+  Gc.compact ()