talloc: use failtest to test failure paths.

[ccan] / ccan / talloc / test / run-test_free_in_destructor.c

diff --git a/ccan/talloc/test/run-test_free_in_destructor.c b/ccan/talloc/test/run-test_free_in_destructor.c
new file mode 100644 (file)
index 0000000..644fcac
--- /dev/null
+++ b/ccan/talloc/test/run-test_free_in_destructor.c
@@ -0,0 +1,132 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)                                        \
+       ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",             \
+          test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)       \
+       ok(strcmp(arg1, arg2) == 0,                             \
+          "%s [\n%s: Expected %s, got %s: %s\n]\n",            \
+          test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)                                   \
+       ok(talloc_total_size(ptr) == (tsize),                           \
+          "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",      \
+          test, #ptr,                                                  \
+          (unsigned)talloc_total_size(ptr),                            \
+          (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)                               \
+       ok(talloc_total_blocks(ptr) == (tblocks),                       \
+          "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",    \
+          test, #ptr,                                                  \
+          (unsigned)talloc_total_blocks(ptr),                  \
+          (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)                                        \
+       ok(talloc_parent(ptr) == (parent),                              \
+          "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",     \
+          test, #ptr,                                                  \
+          talloc_parent(ptr),                                          \
+          (parent))
+
+struct torture_context;
+
+static bool test_talloc_free_in_destructor_run;
+static int _test_talloc_free_in_destructor(void **ptr)
+{
+       talloc_free(*ptr);
+       test_talloc_free_in_destructor_run = true;
+       return 0;
+}
+
+static bool test_talloc_free_in_destructor(const struct torture_context *ctx)
+{
+       void *level0;
+       void *level1;
+       void *level2;
+       void *level3;
+       void *level4;
+       void **level5;
+       bool ret = false;
+
+       level0 = talloc_new(ctx);
+       if (!level0)
+               goto out;
+       level1 = talloc_new(level0);
+       if (!level1)
+               goto out;
+       level2 = talloc_new(level1);
+       if (!level2)
+               goto out;
+       level3 = talloc_new(level2);
+       if (!level3)
+               goto out;
+       level4 = talloc_new(level3);
+       if (!level4)
+               goto out;
+       level5 = talloc(level4, void *);
+       if (!level5)
+               goto out;
+
+       *level5 = talloc_reference(NULL, level3);
+
+       test_talloc_free_in_destructor_run = false;
+       talloc_set_destructor(level5, _test_talloc_free_in_destructor);
+
+       talloc_free(level1);
+       ret = true;
+out:
+       talloc_free(level0);
+
+       ok1(test_talloc_free_in_destructor_run);
+
+       return ret;
+}
+
+int main(int argc, char *argv[])
+{
+       plan_tests(3);
+       failtest_init(argc, argv);
+
+       talloc_enable_null_tracking();
+       if (null_context) {
+               ok1(test_talloc_free_in_destructor(NULL));
+               /* This closes the leak, but don't free any other leaks! */
+               ok1(!talloc_chunk_from_ptr(null_context)->child);
+               talloc_disable_null_tracking();
+       }
+       failtest_exit(exit_status());
+}
+