magento2#32636: Added a test for JwsManager correctly creating a Jws for data with the algorithm only in headers

Author: bgorski

dev/tests/integration/testsuite/Magento/JwtFrameworkAdapter/Model/JwsManagerTest.php

@@ -0,0 +1,59 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\JwtFrameworkAdapter\Model;
+
+class JwsManagerTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @var \Magento\Framework\ObjectManagerInterface
+     */
+    private $objectManager;
+
+    protected function setUp(): void
+    {
+        $this->objectManager = \Magento\TestFramework\Helper\Bootstrap::getObjectManager();
+
+        parent::setUp();
+    }
+
+    public function testCreatingJwsWithAlgorithmSetInHeadersDirectly(): void
+    {
+        $secret = "ZXF1YXRpb24tS2VudHVja3ktY29udGludWVkLWRpZmZlcmVuY2U=";
+        $payload = json_encode([
+            'MyCustomClaim' => 'some value', // not important at all
+            'nbf' => time(),
+            'exp' => time() + 600,
+            'iat' => time()
+        ]);
+        $header = [
+            'alg' => 'HS256',
+            'typ' => 'JWT'
+        ];
+
+        /** @var \Magento\Framework\Jwt\JwkFactory $jwkFactory */
+        $jwkFactory = $this->objectManager->create(\Magento\Framework\Jwt\JwkFactory::class);
+        $jwk = $jwkFactory->createFromData(['kty' => 'oct', 'k' => $secret]);
+
+        /** @var \Magento\JwtFrameworkAdapter\Model\JwsFactory $jwsFactory */
+        $jwsFactory = $this->objectManager->create(\Magento\JwtFrameworkAdapter\Model\JwsFactory::class);
+        $jws = $jwsFactory->create($header, $payload, null);
+
+        /** @var \Magento\Framework\Jwt\Jws\JwsSignatureSettingsInterface $encryptionSettings */
+        $encryptionSettings = $this->objectManager->create(
+            \Magento\Framework\Jwt\Jws\JwsSignatureJwks::class,
+            [
+                'jwk' => $jwk
+            ]
+        );
+
+        /** @var \Magento\JwtFrameworkAdapter\Model\JwsManager $jwsManager */
+        $jwsManager = $this->objectManager->create(\Magento\JwtFrameworkAdapter\Model\JwsManager::class);
+
+        $token = $jwsManager->build($jws, $encryptionSettings);
+
+        $this->assertIsString($token);
+    }
+}