Add test for animated gif preview (#6693) (#6766)

tests/acceptance/expected-failures-API-on-OCIS-storage.md

@@ -210,11 +210,11 @@ cannot share a folder with create permission
 
 #### [download previews of other users file](https://github.com/owncloud/ocis/issues/2071)
 
-- [coreApiWebdavPreviews/previews.feature:94](https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/coreApiWebdavPreviews/previews.feature#L94)
+- [coreApiWebdavPreviews/previews.feature:98](https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/coreApiWebdavPreviews/previews.feature#L98)
 
 #### [different error message detail for previews of folder](https://github.com/owncloud/ocis/issues/2064)
 
-- [coreApiWebdavPreviews/previews.feature:103](https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/coreApiWebdavPreviews/previews.feature#L103)
+- [coreApiWebdavPreviews/previews.feature:107](https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/coreApiWebdavPreviews/previews.feature#L107)
 
 #### [copying a folder within a public link folder to folder with same name as an already existing file overwrites the parent file](https://github.com/owncloud/ocis/issues/1232)
 
@@ -564,7 +564,7 @@ Not everything needs to be implemented for ocis. While the oc10 testsuite covers
 
 #### [Preview of text file with UTF content does not render correctly](https://github.com/owncloud/ocis/issues/2570)
 
-- [coreApiWebdavPreviews/previews.feature:137](https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/coreApiWebdavPreviews/previews.feature#L137)
+- [coreApiWebdavPreviews/previews.feature:141](https://github.com/owncloud/ocis/blob/master/tests/acceptance/features/coreApiWebdavPreviews/previews.feature#L141)
 
 #### [Share path in the response is different between share states](https://github.com/owncloud/ocis/issues/2540)
 

tests/acceptance/features/coreApiWebdavPreviews/previews.feature

@@ -1,4 +1,4 @@
-@api @preview-extension-required
+@api
 Feature: previews of files downloaded through the webdav API
   As a user
   I want to be able to download the preview of the files
@@ -81,14 +81,18 @@ Feature: previews of files downloaded through the webdav API
     And the downloaded image should be "32" pixels wide and "32" pixels high
 
 
-  Scenario: download previews of shared files (to shares folder)
+  Scenario Outline: download previews of shared files (to shares folder)
     Given user "Brian" has been created with default attributes and without skeleton files
-    And user "Alice" has uploaded file "filesForUpload/lorem.txt" to "/parent.txt"
-    And user "Alice" has shared file "/parent.txt" with user "Brian"
-    And user "Brian" has accepted share "/parent.txt" offered by user "Alice"
-    When user "Brian" downloads the preview of "/Shares/parent.txt" with width "32" and height "32" using the WebDAV API
+    And user "Alice" has uploaded file "filesForUpload/<resource>" to "/<resource>"
+    And user "Alice" has shared file "/<resource>" with user "Brian"
+    And user "Brian" has accepted share "/<resource>" offered by user "Alice"
+    When user "Brian" downloads the preview of "/Shares/<resource>" with width "32" and height "32" using the WebDAV API
     Then the HTTP status code should be "200"
     And the downloaded image should be "32" pixels wide and "32" pixels high
+    Examples:
+      | resource    |
+      | lorem.txt   |
+      | example.gif |
 
 
   Scenario: download previews of other users files

tests/acceptance/features/coreApiWebdavPreviews/previewsAutoAdustedSizing.feature

@@ -1,4 +1,4 @@
-@api @preview-extension-required
+@api
 Feature: sizing of previews of files downloaded through the webdav API
   As a user
   I want the aspect-ratio of previews to be preserved even when I ask for an unusual preview size