[pitivi] dogtail tests: Allow import_media to handle empty search results better

[Jean-François Fortin Tam <jfft src gnome org>]

commit db6bd60460873699188ed37b91615a2557e72633
Author: Jean-François Fortin Tam <nekohayo gmail com>
Date:   Wed Aug 21 14:44:16 2013 -0400

    dogtail tests: Allow import_media to handle empty search results better

 tests/dogtail_scripts/helper_functions.py |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/tests/dogtail_scripts/helper_functions.py b/tests/dogtail_scripts/helper_functions.py
index 086f580..302e596 100644
--- a/tests/dogtail_scripts/helper_functions.py
+++ b/tests/dogtail_scripts/helper_functions.py
@@ -106,11 +106,18 @@ class HelpFunc(BaseDogTail):
         for i in range(5):
             # The time it takes for the icon to appear is unpredictable,
             # therefore we try up to 5 times to look for it
-            icons = self.medialibrary.findChildren(GenericPredicate(roleName="icon"))
+            try:
+                icons = self.medialibrary.findChildren(GenericPredicate(roleName="icon"))
+            except TypeError:
+                # If no icon can be seen due to restrictive search results,
+                # don't try to loop over "icons" (which will be a None type).
+                # See further below for further checks that verify this.
+                continue
             for icon in icons:
                 if icon.text == filename:
                     return icon
             sleep(0.5)
+
         # Failure to find an icon might be because it is hidden due to a search
         current_search_text = self.medialibrary.child(name="media_search_entry", 
roleName="text").text.lower()
         self.assertNotEqual(current_search_text, "")