tests: Fix url generation mocks and cleanup some phpunit code

Signed-off-by: Julius Knorr <jus@bitgrid.net>

tests/unit/Service/PermissionServiceTest.php

@@ -151,7 +151,7 @@ class PermissionServiceTest extends \Test\TestCase {
 		$this->assertEquals(false, $this->service->userIsBoardOwner(123));
 	}
 
-	public function dataTestUserCan() {
+	public static function dataTestUserCan() {
 		return [
 			// participant permissions type
 			['admin', false, false, false, 'user', true, false, false, false],
@@ -183,7 +183,7 @@ class PermissionServiceTest extends \Test\TestCase {
 		$this->assertFalse($this->service->userCan([], Acl::PERMISSION_EDIT));
 	}
 
-	public function dataCheckPermission() {
+	public static function dataCheckPermission() {
 		return [
 			// see getAcls() for set permissions
 			[1, Acl::PERMISSION_READ, true],