test-fopen-safer: split from test-fopen

[gnulib.git] / tests / test-fopen.h

diff --git a/tests/test-fopen.h b/tests/test-fopen.h
new file mode 100644 (file)
index 0000000..b1dafbb
--- /dev/null
+++ b/tests/test-fopen.h
@@ -0,0 +1,44 @@
+/* Test of opening a file stream.
+   Copyright (C) 2007-2009 Free Software Foundation, 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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+/* Include <config.h> and a form of <stdio.h> first.  */
+
+#include <stdlib.h>
+
+#define ASSERT(expr) \
+  do                                                                        \
+    {                                                                       \
+      if (!(expr))                                                          \
+        {                                                                   \
+          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+          fflush (stderr);                                                  \
+          abort ();                                                         \
+        }                                                                   \
+    }                                                                       \
+  while (0)
+
+int
+main ()
+{
+  ASSERT (fopen ("nonexist.ent/", "w") == NULL);
+  ASSERT (fopen ("/dev/null/", "r") == NULL);
+
+  ASSERT (fopen ("/dev/null", "r") != NULL);
+
+  return 0;
+}