Introduce DiceTestTrait for partial mocking DI:: calls

tests/DiceTestTrait.php

@@ -0,0 +1,70 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2021, the Friendica project
+ *
+ * @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;
+
+use Friendica\DI;
+use Friendica\Network\HTTPClient;
+use Friendica\Network\IHTTPClient;
+use GuzzleHttp\Client;
+use GuzzleHttp\HandlerStack;
+use mattwright\URLResolver;
+
+/**
+ * This class mocks some DICE dependencies because they're not direct usable for test environments
+ * (Like fetching data from external endpoints)
+ */
+trait DiceTestTrait
+{
+	/**
+	 * Handler for mocking requests anywhere for testing purpose
+	 *
+	 * @var HandlerStack
+	 */
+	protected static $httpRequestHandler;
+
+	protected static function setUpDice(): void
+	{
+		if (!empty(self::$httpRequestHandler) && self::$httpRequestHandler instanceof HandlerStack) {
+			return;
+		}
+
+		self::$httpRequestHandler = HandlerStack::create();
+
+		$client = new Client(['handler' => self::$httpRequestHandler]);
+
+		$resolver = \Mockery::mock(URLResolver::class);
+
+		$httpClient = new HTTPClient(DI::logger(), DI::profiler(), $client, $resolver);
+
+		$dice    = DI::getDice();
+		$newDice = \Mockery::mock($dice)->makePartial();
+		$newDice->shouldReceive('create')->with(IHTTPClient::class)->andReturn($httpClient);
+		DI::init($newDice);
+	}
+
+	protected function tearDown() : void
+	{
+		\Mockery::close();
+
+		parent::tearDown();
+	}
+}