Test for the creation of all the expected files

The test previously only tested that one of the expected files was
created.

tests/bdd/features/file_storage.feature

@@ -20,10 +20,11 @@ Feature: Journals iteracting with the file system in a way that users can see
     Scenario: Adding multiple entries to a Folder journal should generate multiple date files
         Given we use the config "empty_folder.yaml"
         When we run "jrnl 23 July 2013: Testing folder journal."
-        And we run "jrnl 3/7/2014: Second entry of journal."
+        And we run "jrnl 5/3/2014: Second entry of journal."
         Then we should get no error
         And the journal directory should contain
             2013/07/23.txt
+            2014/05/03.txt
 
     Scenario: If the journal and its parent directory don't exist, they should be created
         Given we use the config "missing_directory.yaml"