Add acceptance tests for multiple files

cms/djangoapps/contentstore/features/upload.feature

@@ -10,6 +10,16 @@ Feature: Upload Files
         Then I should see the file "test" was uploaded
         And The url for the file "test" is valid
 
+    @skip_safari
+    Scenario: Users can upload multiple files
+        Given I have opened a new course in studio
+        And I go to the files and uploads page
+        When I upload the files "test","test2"
+        Then I should see the file "test" was uploaded
+        And I should see the file "test2" was uploaded
+        And The url for the file "test2" is valid
+        And The url for the file "test" is valid
+
     # Uploading isn't working on safari with sauce labs
     @skip_safari
     Scenario: Users can update files

cms/djangoapps/contentstore/features/upload.py

@@ -26,7 +26,24 @@ def upload_file(_step, file_name):
     #uploading the file itself
     path = os.path.join(TEST_ROOT, 'uploads/', file_name)
     world.browser.execute_script("$('input.file-input').css('display', 'block')")
-    world.browser.attach_file('file', os.path.abspath(path))
+    world.browser.attach_file('files[]', os.path.abspath(path))
+    close_css = 'a.close-button'
+    world.css_click(close_css)
+
+
+@step(u'I upload the files (".*")$')
+def upload_file(_step, files_string):
+    # Turn files_string to a list of file names
+    files = files_string.split(",")
+    files = map(lambda x: string.strip(x, ' "'), files)
+
+    upload_css = 'a.upload-button'
+    world.css_click(upload_css)
+    #uploading the files
+    for f in files:
+        path = os.path.join(TEST_ROOT, 'uploads/', f)
+        world.browser.execute_script("$('input.file-input').css('display', 'block')")
+        world.browser.attach_file('files[]', os.path.abspath(path))
     close_css = 'a.close-button'
     world.css_click(close_css)