Set the last file location in the file dialog box

Fixes: https://launchpad.net/bugs/1397606

openlp/core/ui/themeform.py

@@ -58,6 +58,12 @@ class ThemeForm(QtGui.QWizard, Ui_ThemeWizard, RegistryProperties):
         :param parent: The QWidget-derived parent of the wizard.
         """
         super(ThemeForm, self).__init__(parent)
+        self._setup()
+
+    def _setup(self):
+        """
+        Set up the class. This method is mocked out by the tests.
+        """
         self.setupUi(self)
         self.registerFields()
         self.update_theme_allowed = True
@@ -429,10 +435,10 @@ class ThemeForm(QtGui.QWizard, Ui_ThemeWizard, RegistryProperties):
         """
         images_filter = get_images_filter()
         images_filter = '%s;;%s (*.*)' % (images_filter, UiStrings().AllFiles)
-        filename = QtGui.QFileDialog.getOpenFileName(self, translate('OpenLP.ThemeWizard', 'Select Image'), '',
+        filename = QtGui.QFileDialog.getOpenFileName(self, translate('OpenLP.ThemeWizard', 'Select Image'),
-                                                     images_filter)
+                                                     self.image_file_edit.text(), images_filter)
         if filename:
-            self.theme.background_filename = str(filename)
+            self.theme.background_filename = filename
         self.set_background_page_values()
 
     def on_image_file_edit_editing_finished(self):

tests/functional/openlp_core_ui/test_themeform.py

@@ -0,0 +1,103 @@
+# -*- coding: utf-8 -*-
+# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
+
+###############################################################################
+# OpenLP - Open Source Lyrics Projection                                      #
+# --------------------------------------------------------------------------- #
+# Copyright (c) 2008-2015 Raoul Snyman                                        #
+# Portions copyright (c) 2008-2015 Tim Bentley, Gerald Britton, Jonathan      #
+# Corwin, Samuel Findlay, Michael Gorven, Scott Guerrieri, Matthias Hub,      #
+# Meinert Jordan, Armin Köhler, Erik Lundin, Edwin Lunando, Brian T. Meyer.   #
+# Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias Põldaru,          #
+# Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith,             #
+# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Dave Warnock,              #
+# Frode Woldsund, Martin Zibricky, Patrick Zimmermann                         #
+# --------------------------------------------------------------------------- #
+# 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; version 2 of the License.                              #
+#                                                                             #
+# 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, write to the Free Software Foundation, Inc., 59  #
+# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
+###############################################################################
+"""
+Package to test the openlp.core.ui.themeform package.
+"""
+
+from unittest import TestCase
+
+from openlp.core.ui import ThemeForm
+
+from tests.interfaces import MagicMock, patch
+
+
+class TestThemeManager(TestCase):
+    """
+    Test the functions in the ThemeManager Class
+    """
+    def select_image_file_dialog_cancelled_test(self):
+        """
+        Test the select image file dialog when the user presses cancel
+        """
+        # GIVEN: An instance of Theme Form and mocked QFileDialog which returns an empty string (similating a user
+        #       pressing cancel)
+        with patch('openlp.core.ui.ThemeForm._setup'),\
+            patch('openlp.core.ui.themeform.get_images_filter',
+                  **{'return_value': 'Image Files (*.bmp; *.gif)(*.bmp *.gif)'}),\
+            patch('openlp.core.ui.themeform.QtGui.QFileDialog.getOpenFileName',
+                  **{'return_value': ''}) as mocked_get_open_file_name,\
+            patch('openlp.core.ui.themeform.translate', **{'return_value': 'Translated String'}),\
+            patch('openlp.core.ui.ThemeForm.set_background_page_values') as mocked_set_background_page_values:
+
+            instance = ThemeForm(None)
+            mocked_image_file_edit = MagicMock()
+            mocked_image_file_edit.text.return_value = '/original_path/file.ext'
+            instance.image_file_edit = mocked_image_file_edit
+
+            # WHEN: on_image_browse_button is clicked
+            instance.on_image_browse_button_clicked()
+
+
+            # THEN: The QFileDialog getOpenFileName and set_background_page_values moethods should have been called
+            #       with known arguments
+            mocked_get_open_file_name.assert_called_once_with(instance, 'Translated String', '/original_path/file.ext',
+                                                              'Image Files (*.bmp; *.gif)(*.bmp *.gif);;All Files (*.*)'
+            )
+            mocked_set_background_page_values.assert_called_once_with()
+
+    def select_image_file_dialog_new_file_test(self):
+        """
+        Test the select image file dialog when the user presses ok
+        """
+        # GIVEN: An instance of Theme Form and mocked QFileDialog which returns a file path
+        with patch('openlp.core.ui.ThemeForm._setup'),\
+            patch('openlp.core.ui.themeform.get_images_filter',
+                  **{'return_value': 'Image Files (*.bmp; *.gif)(*.bmp *.gif)'}),\
+            patch('openlp.core.ui.themeform.QtGui.QFileDialog.getOpenFileName',
+                  **{'return_value': '/new_path/file.ext'}) as mocked_get_open_file_name,\
+            patch('openlp.core.ui.themeform.translate', **{'return_value': 'Translated String'}),\
+            patch('openlp.core.ui.ThemeForm.set_background_page_values') as mocked_background_page_values:
+
+            instance = ThemeForm(None)
+            mocked_image_file_edit = MagicMock()
+            mocked_image_file_edit.text.return_value = '/original_path/file.ext'
+            instance.image_file_edit = mocked_image_file_edit
+            instance.theme = MagicMock()
+
+            # WHEN: on_image_browse_button is clicked
+            instance.on_image_browse_button_clicked()
+
+            # THEN: The QFileDialog getOpenFileName and set_background_page_values moethods should have been called
+            #       with known arguments and theme.background_filename should be set
+            mocked_get_open_file_name.assert_called_once_with(instance, 'Translated String', '/original_path/file.ext',
+                                                              'Image Files (*.bmp; *.gif)(*.bmp *.gif);;All Files (*.*)'
+            )
+            self.assertEqual(instance.theme.background_filename, '/new_path/file.ext',
+                             'theme.background_filename should be set to the path that the file dialog returns')
+            mocked_background_page_values.assert_called_once_with()