Merge pull request #30811 from owncloud/stable10-fix-issue-30727

[stable10] Fix webUI display of group containing numeric username

lib/private/User/Manager.php

@@ -160,7 +160,7 @@ public function clearBackends() {
 	 * @return \OC\User\User|null Either the user or null if the specified user does not exist
 	 */
 	public function get($uid) {
-		if (is_null($uid) || !is_string($uid)) {
+		if (is_null($uid) || (!is_string($uid) && !is_numeric($uid))) {
 			return null;
 		}
 		if ($this->cachedUsers->hasKey($uid)) { //check the cache first to prevent having to loop over the backends

tests/acceptance/features/apiMain/provisioning-v1.feature

@@ -133,12 +133,25 @@ Feature: provisioning
 		Then the OCS status code should be "103"
 		And the HTTP status code should be "200"
 
-	Scenario: getting a group
+	Scenario: getting an empty group
 		Given group "new-group" has been created
 		When user "admin" sends HTTP method "GET" to API endpoint "/cloud/groups/new-group"
 		Then the OCS status code should be "100"
 		And the HTTP status code should be "200"
 
+	Scenario: getting users in a group
+		Given user "brand-new-user" has been created
+		And user "123" has been created
+		And group "new-group" has been created
+		And user "brand-new-user" has been added to group "new-group"
+		And user "123" has been added to group "new-group"
+		When user "admin" sends HTTP method "GET" to API endpoint "/cloud/groups/new-group"
+		Then the OCS status code should be "100"
+		And the HTTP status code should be "200"
+		And the users returned by the API should be
+			| brand-new-user |
+			| 123            |
+
 	Scenario: Getting all groups
 		Given group "0" has been created
 		And group "new-group" has been created