lib/private/User: do not change user properties if value has not changed

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

lib/private/User/User.php

@@ -158,12 +158,12 @@ class User implements IUser {
 	 */
 	public function setEMailAddress($mailAddress) {
 		$oldMailAddress = $this->getEMailAddress();
-		if($mailAddress === '') {
-			$this->config->deleteUserValue($this->uid, 'settings', 'email');
-		} else {
-			$this->config->setUserValue($this->uid, 'settings', 'email', $mailAddress);
-		}
 		if($oldMailAddress !== $mailAddress) {
+			if($mailAddress === '') {
+				$this->config->deleteUserValue($this->uid, 'settings', 'email');
+			} else {
+				$this->config->setUserValue($this->uid, 'settings', 'email', $mailAddress);
+			}
 			$this->triggerChange('eMailAddress', $mailAddress, $oldMailAddress);
 		}
 	}
@@ -407,8 +407,8 @@ class User implements IUser {
 			$quota = OC_Helper::computerFileSize($quota);
 			$quota = OC_Helper::humanFileSize($quota);
 		}
-		$this->config->setUserValue($this->uid, 'files', 'quota', $quota);
 		if($quota !== $oldQuota) {
+			$this->config->setUserValue($this->uid, 'files', 'quota', $quota);
 			$this->triggerChange('quota', $quota, $oldQuota);
 		}
 	}

tests/lib/User/UserTest.php

@@ -676,14 +676,8 @@ class UserTest extends TestCase {
 		$config->expects($this->any())
 			->method('getUserValue')
 			->willReturn('foo@bar.com');
-		$config->expects($this->once())
-			->method('setUserValue')
-			->with(
-				'foo',
-				'settings',
-				'email',
-				'foo@bar.com'
-			);
+		$config->expects($this->never())
+			->method('setUserValue');
 
 		$user = new User('foo', $backend, $this->dispatcher, $emitter, $config);
 		$user->setEMailAddress('foo@bar.com');
@@ -741,14 +735,8 @@ class UserTest extends TestCase {
 		$config->expects($this->any())
 			->method('getUserValue')
 			->willReturn('23 TB');
-		$config->expects($this->once())
-			->method('setUserValue')
-			->with(
-				'foo',
-				'files',
-				'quota',
-				'23 TB'
-			);
+		$config->expects($this->never())
+			->method('setUserValue');
 
 		$user = new User('foo', $backend, $this->dispatcher, $emitter, $config);
 		$user->setQuota('23 TB');