Tests: Fix database locking bug

tests/Browser/Settings/Preferences/GeneralTest.php

@@ -146,6 +146,8 @@ class GeneralTest extends \Tests\Browser\TestCase
                 $browser->assertCheckboxState('_pretty_date', $this->settings['pretty_date']);
                 $browser->assertCheckboxState('_display_next', $this->settings['display_next']);
                 $browser->assertCheckboxState('_standard_windows', $this->settings['standard_windows']);
+            });
+        });
 
         // Assert the options have been saved in database properly
         $prefs   = \bootstrap::get_prefs();
@@ -157,7 +159,5 @@ class GeneralTest extends \Tests\Browser\TestCase
 
         $this->assertEquals($this->settings['pretty_date'], $prefs['prettydate']);
         $this->assertEquals($this->settings['refresh_interval'], $prefs['refresh_interval']/60);
-            });
-        });
     }
 }

tests/Browser/bootstrap.php

@@ -243,7 +243,13 @@ class bootstrap
      */
     public static function get_prefs()
     {
-        $db     = rcmail::get_instance()->get_dbh();
+        $rcmail = rcmail::get_instance();
+
+        // Create a separate connection to the DB, otherwise
+        // we hit some strange and hard to investigate locking issues
+        $db = rcube_db::factory($rcmail->config->get('db_dsnw'), $rcmail->config->get('db_dsnr'), false);
+        $db->set_debug((bool)$rcmail->config->get('sql_debug'));
+
         $query  = $db->query("SELECT preferences FROM users WHERE username = ?", TESTS_USER);
         $record = $db->fetch_assoc($query);