Add jsonSerialize method to RelationalEntity

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

tests/unit/Db/RelationalEntityTest.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ * @copyright Copyright (c) 2016 Julius Härtl <jus@bitgrid.net>
+ *
+ * @author Julius Härtl <jus@bitgrid.net>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *  
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as
+ *  published by the Free Software Foundation, either version 3 of the
+ *  License, or (at your option) any later version.
+ *  
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *  
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *  
+ */
+
+namespace OCA\Deck\Db;
+
+class RelationalEntityTest extends \Test\TestCase {
+
+	public function testRelation() {
+		$entity = new RelationalEntity();
+		$entity->foo = null;
+		$entity->addRelation('foo');
+		$entity->setFoo('test');
+		$this->assertEquals([], $entity->getUpdatedFields());
+	}
+	
+	public function testWithoutRelation() {
+		$entity = new RelationalEntity();
+		$entity->foo = null;
+		$entity->setFoo('test');
+		$this->assertEquals(['foo'=>true], $entity->getUpdatedFields());
+	}
+
+	public function testJsonSerialize() {
+		$entity = new RelationalEntity();
+		$entity->setId(123);
+		$json = [
+			'id' => 123,
+		];
+		$this->assertEquals($json, $entity->jsonSerialize());
+	}
+
+}