Merge pull request #2 from php-api-clients/middleware-accept-json-middleware

Accept JSON header middleware

Author: WyriHaximus

src/AcceptJsonMiddleware.php

@@ -0,0 +1,28 @@
+<?php declare(strict_types=1);
+
+namespace ApiClients\Middleware\Json;
+
+use ApiClients\Foundation\Middleware\DefaultPriorityTrait;
+use ApiClients\Foundation\Middleware\ErrorTrait;
+use ApiClients\Foundation\Middleware\MiddlewareInterface;
+use ApiClients\Foundation\Middleware\PostTrait;
+use Psr\Http\Message\RequestInterface;
+use React\Promise\CancellablePromiseInterface;
+use function React\Promise\resolve;
+
+class AcceptJsonMiddleware implements MiddlewareInterface
+{
+    use PostTrait;
+    use ErrorTrait;
+    use DefaultPriorityTrait;
+
+    /**
+     * @param RequestInterface $request
+     * @param array $options
+     * @return CancellablePromiseInterface
+     */
+    public function pre(RequestInterface $request, array $options = []): CancellablePromiseInterface
+    {
+        return resolve($request->withAddedHeader('Accept', 'application/json'));
+    }
+}

tests/AcceptJsonMiddlewareTest.php

@@ -0,0 +1,27 @@
+<?php declare(strict_types=1);
+
+namespace ApiClients\Tests\Middleware\Json;
+
+use ApiClients\Middleware\Json\AcceptJsonMiddleware;
+use ApiClients\Tools\TestUtilities\TestCase;
+use React\EventLoop\Factory;
+use RingCentral\Psr7\Request;
+use function Clue\React\Block\await;
+
+class AcceptJsonMiddlewareTest extends TestCase
+{
+    public function testPre()
+    {
+        $middleware = new AcceptJsonMiddleware();
+        $request = new Request('GET', 'https://example.com', [], '');
+
+        $modifiedRequest = await($middleware->pre($request), Factory::create());
+        self::assertSame(
+            [
+                'Host' => ['example.com'],
+                'Accept' => ['application/json'],
+            ],
+            $modifiedRequest->getHeaders()
+        );
+    }
+}