Fix unit tests to run with changed rcmail class + use own config for tests

tests/mailfunc.php

@@ -16,6 +16,7 @@ class rcube_test_mailfunc extends UnitTestCase
     $GLOBALS['RCMAIL'] = $RCMAIL = rcmail::get_instance();
     $GLOBALS['OUTPUT'] = $OUTPUT = $RCMAIL->load_gui();
     $RCMAIL->action = 'spell';
+    $RCMAIL->imap_init(false);
     $IMAP = $RCMAIL->imap;
     
     require_once 'steps/mail/func.inc';

tests/runtests.sh

@@ -27,6 +27,7 @@ if (!defined('SIMPLETEST'))   define('SIMPLETEST', '/www/simpletest/');
 if (!defined('INSTALL_PATH')) define('INSTALL_PATH', realpath(dirname(__FILE__) . '/..') . '/' );
 
 define('TESTS_DIR', dirname(__FILE__) . '/');
+define('RCMAIL_CONFIG_DIR', TESTS_DIR . 'config');
 
 require_once(SIMPLETEST . 'unit_tester.php');
 require_once(SIMPLETEST . 'reporter.php');