Extend test capability for HTTP Requests

tests/DiceHttpMockHandlerTrait.php

@@ -0,0 +1,68 @@
+<?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 Dice\Dice;
+use Friendica\DI;
+use Friendica\Factory\HTTPClientFactory;
+use Friendica\Network\IHTTPClient;
+use GuzzleHttp\HandlerStack;
+
+/**
+ * This class injects a mockable handler into the IHTTPClient dependency per Dice
+ */
+trait DiceHttpMockHandlerTrait
+{
+	/**
+	 * Handler for mocking requests anywhere for testing purpose
+	 *
+	 * @var HandlerStack
+	 */
+	protected $httpRequestHandler;
+
+	protected function setupHttpMockHandler(): void
+	{
+		if (!empty($this->httpRequestHandler) && $this->httpRequestHandler instanceof HandlerStack) {
+			return;
+		}
+
+		$this->httpRequestHandler = HandlerStack::create();
+
+		$dice = DI::getDice();
+		// addRule() clones the current instance and returns a new one, so no concurrency problems :-)
+		$newDice = $dice->addRule(IHTTPClient::class, [
+			'instanceOf' => HTTPClientFactory::class,
+			'call'       => [
+				['createClient', [$this->httpRequestHandler], Dice::CHAIN_CALL],
+			],
+		]);
+
+		DI::init($newDice);
+	}
+
+	protected function tearDown(): void
+	{
+		\Mockery::close();
+
+		parent::tearDown();
+	}
+}