Added tests for JsonLD class

tests/src/Util/JSonLDTest.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Test\src\Util;
+
+use Friendica\Util\JsonLD;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * JsonLD utility test class
+ */
+class JsonLDTest extends TestCase
+{	
+	public function testFetchElementArrayNotFound()
+	{
+		$object = [];
+
+		$data = JsonLD::fetchElementArray($object, 'field');
+		$this->assertNull($data);
+	}
+
+	public function testFetchElementNotFound()
+	{
+		$object = [];
+
+		$data = JsonLD::fetchElement($object, 'field');
+		$this->assertNull($data);
+	}
+
+	public function testFetchElementFound()
+	{
+		$object = ['field' => 'value'];
+
+		$data = JsonLD::fetchElement($object, 'field');
+		$this->assertSame('value', $data);
+	}
+
+	public function testFetchElementFoundID()
+	{
+		$object = ['field' => ['field2' => 'value2', '@id' => 'value', 'field3' => 'value3']];
+
+		$data = JsonLD::fetchElement($object, 'field');
+		$this->assertSame('value', $data);
+	}
+
+	public function testFetchElementType()
+	{
+		$object = ['source' => ['content' => 'body', 'mediaType' => 'text/bbcode']];
+
+		$data = JsonLD::fetchElement($object, 'source', 'content', 'mediaType', 'text/bbcode');
+		$this->assertSame('body', $data);
+	}
+
+	public function testFetchElementTypeArray()
+	{
+		$object = ['source' => [['content' => 'body2', 'mediaType' => 'text/html'],
+			['content' => 'body', 'mediaType' => 'text/bbcode']]];
+
+		$data = JsonLD::fetchElement($object, 'source', 'content', 'mediaType', 'text/bbcode');
+		$this->assertSame('body', $data);
+	}
+}