selftests/functional: Add output tests

Signed-off-by: NLucas Meneghel Rodrigues <lmr@redhat.com>

selftests/all/functional/avocado/output_tests.py

+#!/usr/bin/env python
+
+# 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 LICENSE for more details.
+#
+# Copyright: Red Hat Inc. 2013-2014
+# Author: Lucas Meneghel Rodrigues <lmr@redhat.com>
+
+import unittest
+import os
+import sys
+
+# simple magic for using scripts within a source tree
+basedir = os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', '..', '..', '..')
+basedir = os.path.abspath(basedir)
+if os.path.isdir(os.path.join(basedir, 'avocado')):
+    sys.path.append(basedir)
+
+from avocado.utils import process
+
+
+class OutputTest(unittest.TestCase):
+
+    def test_output_doublefree(self):
+        os.chdir(basedir)
+        cmd_line = './scripts/avocado run doublefree'
+        result = process.run(cmd_line, ignore_status=True)
+        expected_rc = 1
+        output = result.stdout + result.stderr
+        self.assertEqual(result.exit_status, expected_rc,
+                         "Avocado did not return rc %d:\n%s" %
+                         (expected_rc, result))
+        bad_string = 'double free or corruption'
+        self.assertNotIn(bad_string, output,
+                         "Libc double free can be seen in avocado "
+                         "doublefree output:\n%s" % output)
+
+
+if __name__ == '__main__':
+    unittest.main()