Added check for closed call

Author: slischka

Makefile

@@ -2,6 +2,9 @@
 help: ## List available targets (this page)
 	@awk 'BEGIN {FS = ":.*?## "} /^[0-9a-zA-Z_-]+:.*?## / {printf "\033[36m%-45s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)
 
+composer-install: ## Check code style
+	docker exec http-client /bin/sh -c 'composer install'
+
 cs: ## Check code style
 	docker exec http-client /bin/sh -c 'bin/cs'
 
@@ -12,4 +15,4 @@ stan: ## Fix code style
 	docker exec http-client /bin/sh -c 'bin/stan'
 
 test: ## Run tests
-	docker exec http-client /bin/sh -c 'bin/tests'
+	docker exec http-client /bin/sh -c 'bin/tests'

src/Fapi/HttpClient/CapturingHttpClient.php

@@ -2,6 +2,7 @@
 
 namespace Fapi\HttpClient;
 
+use LogicException;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use Tester\Dumper;
@@ -21,6 +22,8 @@ class CapturingHttpClient implements IHttpClient
 	/** @var array<ResponseInterface> */
 	private array $httpResponses = [];
 
+	private int $closed = 0;
+
 	public function __construct(private IHttpClient $httpClient, private string $file, private string $className)
 	{
 		if (!class_exists('Tester\Dumper')) {
@@ -56,6 +59,8 @@ private function capture(RequestInterface $httpRequest, ResponseInterface $httpR
 
 	public function close(): void
 	{
+		$this->closed++;
+
 		if ($this->httpClient instanceof $this->className) {
 			return;
 		}
@@ -66,7 +71,8 @@ public function close(): void
 	private function writeToPhpFile(string $fileName, string $className): void
 	{
 		preg_match('#^(?:(.*)\\\\)?([^\\\\]+)\z#', $className, $match);
-		[, $namespace, $className] = $match;
+		$namespace = $match[1] ?? null;
+		$className = $match[2] ?? null;
 
 		$code = '<?php declare(strict_types = 1);' . "\n";
 		$code .= "\n";
@@ -120,4 +126,13 @@ private function exportValue(mixed $value, string $indent = ''): string
 		return $s;
 	}
 
+	public function __destruct()
+	{
+		if ($this->closed !== 1) {
+			throw new LogicException(
+				'Method: ' . self::class . '::closed Must be called exactly once. Called ' . $this->closed . ' times.',
+			);
+		}
+	}
+
 }