[stable15] cache the displayname after an LDAP plugin set it (#16001)

[stable15] cache the displayname after an LDAP plugin set it

Author: skjnldsv

apps/user_ldap/lib/User_LDAP.php

@@ -508,7 +508,9 @@ public function getDisplayName($uid) {
 	 */
 	public function setDisplayName($uid, $displayName) {
 		if ($this->userPluginManager->implementsActions(Backend::SET_DISPLAYNAME)) {
-			return $this->userPluginManager->setDisplayName($uid, $displayName);
+			$this->userPluginManager->setDisplayName($uid, $displayName);
+			$this->access->cacheUserDisplayName($uid, $displayName);
+			return $displayName;
 		}
 		return false;
 	}

apps/user_ldap/tests/User_LDAPTest.php

@@ -1391,23 +1391,47 @@ public function testCanChangeAvatarWithPlugin() {
 	}
 
 	public function testSetDisplayNameWithPlugin() {
+		$newDisplayName = 'J. Baker';
 		$this->pluginManager->expects($this->once())
 			->method('implementsActions')
 			->with(Backend::SET_DISPLAYNAME)
 			->willReturn(true);
 		$this->pluginManager->expects($this->once())
 			->method('setDisplayName')
-			->with('uid','displayName')
-			->willReturn('result');
+			->with('uid', $newDisplayName)
+			->willReturn($newDisplayName);
+		$this->access->expects($this->once())
+			->method('cacheUserDisplayName');
+
+		$this->assertEquals($newDisplayName, $this->backend->setDisplayName('uid', $newDisplayName));
+	}
+
+	/**
+	 * @expectedException \OC\HintException
+	 */
+	public function testSetDisplayNameErrorWithPlugin() {
+		$newDisplayName = 'J. Baker';
+		$this->pluginManager->expects($this->once())
+			->method('implementsActions')
+			->with(Backend::SET_DISPLAYNAME)
+			->willReturn(true);
+		$this->pluginManager->expects($this->once())
+			->method('setDisplayName')
+			->with('uid', $newDisplayName)
+			->willThrowException(new HintException('something happned'));
+		$this->access->expects($this->never())
+			->method('cacheUserDisplayName');
 
-		$this->assertEquals($this->backend->setDisplayName('uid', 'displayName'),'result');
+		$this->backend->setDisplayName('uid', $newDisplayName);
 	}
 
 	public function testSetDisplayNameFailing() {
 		$this->pluginManager->expects($this->once())
 			->method('implementsActions')
 			->with(Backend::SET_DISPLAYNAME)
 			->willReturn(false);
+		$this->access->expects($this->never())
+			->method('cacheUserDisplayName');
 
 		$this->assertFalse($this->backend->setDisplayName('uid', 'displayName'));
 	}