Behat bug 1814979 Script to check that folder size is displayed after uploading 3 images

Change-Id: I7abce407ed2c57670256a748090821606a7b3784

test/behat/features/user_content/file_edit.feature

 @javascript @core
-Feature: Rename file and add description
+Feature: Rename file and add description. Create folder and add files
     As a user
     I want to be able to rename files and add descriptions
     So that I can manage my content
@@ -23,3 +23,14 @@ Scenario: Add file, rename and add description
     And I should not see "mahara_about.pdf"
     # Verify Quota is displayed on the sidebar of the Content->Files page and default maximum of 50.0MB
     And I should see "You have used 0.1MB of your 50.0MB quota."
+
+    # Verify folder show content size
+    When I fill in "Folder1" for "files_filebrowser_createfolder_name"
+    And I press "Create folder"
+    And I follow "Folder1"
+    And I attach the file "Image3.png" to "File"
+    And I attach the file "Image2.png" to "File"
+    And I attach the file "testvid3.mp4" to "File"
+    And I follow "Parent folder"
+    Then I should see "96.5K"
+    And I should see "You have used 0.2MB of your 50.0MB quota."