README

This package can validate requests made in application tests, based of Symfony's WebTestCase, against OpenAPI specifications. This is done by converting HttpFoundation objects using the PSR-7 Bridge and passing them to the OpenAPI PSR-7 Message Validator.

Installation

composer require --dev gertjuhh/symfony-openapi-validator

Usage

• Add the OpenApiValidator trait to your WebTestCase
• Create a client by calling self::createClient()
  • Alternatively use your own custom logic creating an instance of KernelBrowser
• Execute the request you wish to validate using the client
• Call self::assertOpenApiSchema(<schema>, <client>);
  • schema: path to corresponding OpenAPI yaml schema
  • client: the client used to make the request
• Or optionally use the self::assertResponseAgainstOpenApiSchema(<schema>, <client>); to only validate the response
  • The operationAddress can be passed as a third argument for this function but by default it will retrieve the operation from the client.

Setting up a cache

The underlying library can use a PSR-6 cache. This provides a significant speedup when running multiple tests against a single schema, since it can be parsed once and reused.

In order to activate this cache, you can pass a PSR-6 cache instance to the static property \Gertjuhh\SymfonyOpenapiValidator\StaticOpenApiValidatorCache::$validatorCache. For example:

<?php

use Gertjuhh\SymfonyOpenapiValidator\StaticOpenApiValidatorCache;
use Symfony\Component\Cache\Adapter\ArrayAdapter;

StaticOpenApiValidatorCache::$validatorCache = new ArrayAdapter(storeSerialized: false);

Setting storeSerialized to false on the ArrayAdapter instance is recommended as it lowers memory usage by storing the actual objects; otherwise, Symfony will store a serialized representation of the OpenAPI schema and deserialize it on every test run.

This snippet can be embedded in a bootstrap script for PHPUnit.

Example

<?php
declare(strict_types=1);

namespace App\ApplicationTests;

use Gertjuhh\SymfonyOpenapiValidator\OpenApiValidator;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;

final class HelloWorldTest extends WebTestCase
{
    use OpenApiValidator;

    public function testHelloWorldReturnsSuccessfulResponse(): void
    {
        $client = self::createClient();

        $client->xmlHttpRequest('GET', '/hello-world');

        self::assertResponseIsSuccessful();
        self::assertOpenApiSchema('public/openapi.yaml', $client);
    }
}