test: add container build test verifying all services resolve

Compiles a full Nette DI container with the extension and stub
PSR-18/17 implementations, then asserts TheConfig, SignatureService,
ApiServiceInterface, GateServiceInterface, and TheClient all resolve.

Author: trejjam

tests/Cases/ContainerTest.phpt

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+<?php declare(strict_types = 1);
+
+namespace Tests\Cases;
+
+use Contributte\Tester\Environment;
+use Contributte\Tester\Toolkit;
+use Contributte\ThePay\DI\ThePayExtension;
+use Nette\DI\Compiler;
+use Nette\DI\Container;
+use Nette\DI\ContainerLoader;
+use Psr\Http\Client\ClientInterface;
+use Psr\Http\Message\RequestFactoryInterface;
+use Psr\Http\Message\StreamFactoryInterface;
+use Tester\Assert;
+use Tests\Fixtures\PsrStubFactory;
+use ThePay\ApiClient\Service\ApiServiceInterface;
+use ThePay\ApiClient\Service\GateServiceInterface;
+use ThePay\ApiClient\Service\SignatureService;
+use ThePay\ApiClient\TheClient;
+use ThePay\ApiClient\TheConfig;
+
+require __DIR__ . '/../bootstrap.php';
+
+Toolkit::test(function (): void {
+	$loader = new ContainerLoader(Environment::getTestDir());
+
+	$class = $loader->load(function (Compiler $compiler): void {
+		$compiler->addExtension('thepay', new ThePayExtension());
+		$compiler->addConfig([
+			'thepay' => [
+				'demo' => true,
+				'merchantId' => 'test-merchant-id',
+				'projectId' => 3,
+				'apiPassword' => 'secret',
+			],
+			'services' => [
+				'httpClient' => [
+					'type' => ClientInterface::class,
+					'factory' => PsrStubFactory::class . '::createHttpClient',
+				],
+				'requestFactory' => [
+					'type' => RequestFactoryInterface::class,
+					'factory' => PsrStubFactory::class . '::createRequestFactory',
+				],
+				'streamFactory' => [
+					'type' => StreamFactoryInterface::class,
+					'factory' => PsrStubFactory::class . '::createStreamFactory',
+				],
+			],
+		]);
+	}, 'thepay-container-test');
+
+	/** @var Container $container */
+	$container = new $class();
+
+	Assert::type(TheConfig::class, $container->getByType(TheConfig::class));
+	Assert::type(SignatureService::class, $container->getByType(SignatureService::class));
+	Assert::type(ApiServiceInterface::class, $container->getByType(ApiServiceInterface::class));
+	Assert::type(GateServiceInterface::class, $container->getByType(GateServiceInterface::class));
+	Assert::type(TheClient::class, $container->getByType(TheClient::class));
+});

tests/Fixtures/PsrStubFactory.php

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+<?php declare(strict_types = 1);
+
+namespace Tests\Fixtures;
+
+use Psr\Http\Client\ClientInterface;
+use Psr\Http\Message\RequestFactoryInterface;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\StreamFactoryInterface;
+use Psr\Http\Message\StreamInterface;
+
+final class PsrStubFactory
+{
+
+	public static function createHttpClient(): ClientInterface
+	{
+		return new class implements ClientInterface {
+
+			public function sendRequest(RequestInterface $request): ResponseInterface
+			{
+				throw new \RuntimeException('Stub');
+			}
+
+		};
+	}
+
+	public static function createRequestFactory(): RequestFactoryInterface
+	{
+		return new class implements RequestFactoryInterface {
+
+			public function createRequest(string $method, $uri): RequestInterface // phpcs:ignore SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingAnyTypeHint
+			{
+				throw new \RuntimeException('Stub');
+			}
+
+		};
+	}
+
+	public static function createStreamFactory(): StreamFactoryInterface
+	{
+		return new class implements StreamFactoryInterface {
+
+			public function createStream(string $content = ''): StreamInterface
+			{
+				throw new \RuntimeException('Stub');
+			}
+
+			public function createStreamFromFile(string $filename, string $mode = 'r'): StreamInterface
+			{
+				throw new \RuntimeException('Stub');
+			}
+
+			public function createStreamFromResource($resource): StreamInterface // phpcs:ignore SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingAnyTypeHint
+			{
+				throw new \RuntimeException('Stub');
+			}
+
+		};
+	}
+
+}