remove environment-dependent CSP JSON test from ExceptionHandlerTest

Author: michalsn

tests/system/Debug/ExceptionHandlerTest.php

@@ -16,12 +16,9 @@
 use App\Controllers\Home;
 use CodeIgniter\Exceptions\PageNotFoundException;
 use CodeIgniter\Exceptions\RuntimeException;
-use CodeIgniter\HTTP\IncomingRequest;
-use CodeIgniter\HTTP\Response;
 use CodeIgniter\Test\CIUnitTestCase;
 use CodeIgniter\Test\IniTestTrait;
 use CodeIgniter\Test\StreamFilterTrait;
-use Config\App;
 use Config\Exceptions as ExceptionsConfig;
 use Config\Services;
 use PHPUnit\Framework\Attributes\Group;
@@ -391,32 +388,4 @@ public function testSanitizeDataWithScalars(): void
         $this->assertFalse($sanitizeData(false));
         $this->assertNull($sanitizeData(null));
     }
-
-    public function testHandleJsonResponseWithCSPEnabledProducesValidJson(): void
-    {
-        $config             = config(App::class);
-        $config->CSPEnabled = true;
-
-        /** @var IncomingRequest $request */
-        $request = service('incomingrequest', $config, false);
-        $request->setHeader('accept', 'application/json');
-        $response = new Response($config);
-        $response->pretend();
-
-        $exception = new RuntimeException('Test exception');
-
-        ob_start();
-        $this->handler->handle($exception, $request, $response, 500, EXIT_ERROR);
-        $output = ob_get_clean();
-
-        $json = json_decode($output);
-        $this->assertNotNull($json);
-
-        // Nonce placeholders must not appear in the output
-        $this->assertStringNotContainsString('{csp-style-nonce}', (string) $output);
-        $this->assertStringNotContainsString('{csp-script-nonce}', (string) $output);
-
-        // The nonce attribute values should be properly JSON-escaped
-        $this->assertMatchesRegularExpression('/nonce=\\\\"[A-Za-z0-9+\/=]+\\\\"/', $output);
-    }
 }