Added test case for Auto option.

tests/functional/openlp_core_ui_lib/test_listpreviewwidget.py

@@ -225,6 +225,44 @@ class TestListPreviewWidget(TestCase):
         calls = [call(0, 100), call(1, 100), call(0, 100), call(1, 100)]
         mocked_setRowHeight.assert_has_calls(calls)
 
+    @patch(u'openlp.core.ui.lib.listpreviewwidget.ListPreviewWidget.resizeRowsToContents')
+    @patch(u'openlp.core.ui.lib.listpreviewwidget.ListPreviewWidget.setRowHeight')
+    def replace_recalculate_layout_test_img_auto(self, mocked_setRowHeight, mocked_resizeRowsToContents):
+        """
+        Test if "Max height for non-text slides..." auto, img slides resized in replace_service_item & __recalc...
+        """
+        # GIVEN: A setting to adjust "Max height for non-text slides in slide controller",
+        #        an image ServiceItem and a ListPreviewWidget.
+
+        # Mock Settings().value('advanced/slide max height')
+        self.mocked_Settings_obj.value.return_value = -4
+        # Mock self.viewport().width()
+        self.mocked_viewport_obj.width.return_value = 200
+        self.mocked_viewport_obj.height.return_value = 600
+        # Mock image service item
+        service_item = MagicMock()
+        service_item.is_text.return_value = False
+        service_item.is_capable.return_value = False
+        service_item.get_frames.return_value = [{'title': None, 'path': None, 'image': None},
+                                                {'title': None, 'path': None, 'image': None}]
+        # init ListPreviewWidget and load service item
+        list_preview_widget = ListPreviewWidget(None, 1)
+        list_preview_widget.replace_service_item(service_item, 200, 0)
+        # Change viewport width before forcing a resize
+        self.mocked_viewport_obj.width.return_value = 400
+
+        # WHEN: __recalculate_layout() is called (via resizeEvent)
+        list_preview_widget.resizeEvent(None)
+        self.mocked_viewport_obj.height.return_value = 200
+        list_preview_widget.resizeEvent(None)
+
+        # THEN: resizeRowsToContents() should not be called, while setRowHeight() should be called
+        #       twice for each slide.
+        self.assertEquals(mocked_resizeRowsToContents.call_count, 0, 'Should not be called')
+        self.assertEquals(mocked_setRowHeight.call_count, 6, 'Should be called 3 times for each slide')
+        calls = [call(0, 100), call(1, 100), call(0, 150), call(1, 150), call(0, 100), call(1, 100)]
+        mocked_setRowHeight.assert_has_calls(calls)
+
     @patch(u'openlp.core.ui.lib.listpreviewwidget.ListPreviewWidget.resizeRowsToContents')
     @patch(u'openlp.core.ui.lib.listpreviewwidget.ListPreviewWidget.setRowHeight')
     @patch(u'openlp.core.ui.lib.listpreviewwidget.ListPreviewWidget.cellWidget')