remove superfluous tests

- user_ldap is not exposed to public api, it is always behind ldap_proxy
- this is too much for a unit test
- integration tests cover userExists implicitly

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

apps/user_ldap/tests/User_LDAPTest.php

@@ -586,64 +586,6 @@ public function testUserExistsPublicAPI() {
 		$this->assertTrue($result);
 	}
 
-	public function testUserExistsPublicAPIForDeleted() {
-		$backend = new UserLDAP($this->access, $this->config, $this->notificationManager, $this->session, $this->pluginManager);
-		$this->prepareMockForUserExists();
-		\OC_User::useBackend($backend);
-
-		$mapper = $this->createMock(UserMapping::class);
-		$mapper->expects($this->any())
-			->method('getUUIDByDN')
-			->with('dnOfFormerUser,dc=test')
-			->willReturn('45673458748');
-
-		$this->access->expects($this->any())
-			->method('readAttribute')
-			->will($this->returnCallback(function($dn) {
-				if($dn === 'dnOfRoland,dc=test') {
-					return array();
-				}
-				return false;
-			}));
-		$this->access->expects($this->any())
-			->method('getUserMapper')
-			->willReturn($mapper);
-		$this->access->expects($this->once())
-			->method('getUserDnByUuid')
-			->willThrowException(new \Exception());
-
-		$user = $this->createMock(User::class);
-		$user->expects($this->any())
-			->method('getDN')
-			->willReturn('dnOfFormerUser,dc=test');
-
-		$this->userManager->expects($this->atLeastOnce())
-			->method('get')
-			->willReturn($user);
-
-		//test for deleted user – always returns true as long as we have the user in DB
-		$this->assertTrue(\OC::$server->getUserManager()->userExists('formerUser'));
-	}
-
-	public function testUserExistsPublicAPIForNeverExisting() {
-		$backend = new UserLDAP($this->access, $this->config, $this->notificationManager, $this->session, $this->pluginManager);
-		$this->prepareMockForUserExists();
-		\OC_User::useBackend($backend);
-
-		$this->access->expects($this->any())
-			->method('readAttribute')
-			->will($this->returnCallback(function($dn) {
-				if($dn === 'dnOfRoland,dc=test') {
-					return array();
-				}
-				return false;
-			}));
-
-		//test for never-existing user
-		$result = \OC::$server->getUserManager()->userExists('mallory');
-		$this->assertFalse($result);
-	}
-
 	public function testDeleteUserExisting() {
 		$backend = new UserLDAP($this->access, $this->config, $this->notificationManager, $this->session, $this->pluginManager);