selftests: Include functional test for journal plugin.

Include a functional test for the journal plugin that
validates the database file created by the test runner.

It basically validates the job_id inside the job_info table
and the number of rows inside the test_journal table,
for a simple execution of sleeptest.
Signed-off-by: NRuda Moura <rmoura@redhat.com>

selftests/all/functional/avocado/journal_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. 2014
+# Author: Ruda Moura <rmoura@redhat.com>
+
+import unittest
+import os
+import sys
+import json
+import sqlite3
+
+# 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 JournalPluginTests(unittest.TestCase):
+
+    def test_journal_result(self):
+        os.chdir(basedir)
+        cmd_line = './scripts/avocado run --json - --journal examples/tests/sleeptest.py'
+        result = process.run(cmd_line, ignore_status=True)
+        self.assertEqual(result.exit_status, 0,
+                         "Command '%s' did not return 0" % cmd_line)
+        data = json.loads(result.stdout)
+        job_id = data['job_id']
+        jfile = os.path.join(os.path.dirname(data['debuglog']),
+                             'test-results/examples/tests/.journal.sqlite')
+        print jfile
+        db = sqlite3.connect(jfile)
+        cur = db.cursor()
+        cur.execute('SELECT unique_id FROM job_info;')
+        db_job_id = cur.fetchone()[0]
+        self.assertEqual(db_job_id, job_id,
+                         "The job ids differs, expected %s got %s" % (job_id, db_job_id))
+        cur.execute('SELECT COUNT(*) FROM test_journal;')
+        db_count = cur.fetchone()[0]
+        count = 2
+        self.assertEqual(db_count, count,
+                         "The checkup count of test_journal is wrong, expected %d got %d" % (count, db_count))
+
+if __name__ == '__main__':
+    unittest.main()