Merge pull request #169 from WoltLab/json-response-error

Correctly handle explicitly providing `JSON_THROW_ON_ERROR` in `JsonResponse`

Author: Ocramius

src/Response/JsonResponse.php

@@ -4,22 +4,21 @@
 
 namespace Laminas\Diactoros\Response;
 
+use JsonException;
 use Laminas\Diactoros\Exception;
 use Laminas\Diactoros\Response;
 use Laminas\Diactoros\Stream;
 
 use function is_object;
 use function is_resource;
 use function json_encode;
-use function json_last_error;
-use function json_last_error_msg;
 use function sprintf;
 
-use const JSON_ERROR_NONE;
 use const JSON_HEX_AMP;
 use const JSON_HEX_APOS;
 use const JSON_HEX_QUOT;
 use const JSON_HEX_TAG;
+use const JSON_THROW_ON_ERROR;
 use const JSON_UNESCAPED_SLASHES;
 
 /**
@@ -131,17 +130,15 @@ private function jsonEncode(mixed $data, int $encodingOptions): string
         // Clear json_last_error()
         json_encode(null);
 
-        $json = json_encode($data, $encodingOptions);
-
-        if (JSON_ERROR_NONE !== json_last_error()) {
+        try {
+            return json_encode($data, $encodingOptions | JSON_THROW_ON_ERROR);
+        } catch (JsonException $e) {
             throw new Exception\InvalidArgumentException(sprintf(
                 'Unable to encode data to JSON in %s: %s',
                 self::class,
-                json_last_error_msg()
-            ));
+                $e->getMessage()
+            ), 0, $e);
         }
-
-        return $json;
     }
 
     private function setPayload(mixed $data): void

test/Response/JsonResponseTest.php

@@ -19,6 +19,7 @@
 use const JSON_HEX_QUOT;
 use const JSON_HEX_TAG;
 use const JSON_PRETTY_PRINT;
+use const JSON_THROW_ON_ERROR;
 use const JSON_UNESCAPED_SLASHES;
 
 class JsonResponseTest extends TestCase
@@ -103,6 +104,22 @@ public function testJsonErrorHandlingOfBadEmbeddedData(): void
         new JsonResponse($data);
     }
 
+    public function testJsonErrorHandlingOfMalformedUtf8(): void
+    {
+        $this->expectException(InvalidArgumentException::class);
+        $this->expectExceptionMessage('Unable to encode');
+
+        new JsonResponse("\xff");
+    }
+
+    public function testJsonErrorHandlingOfMalformedUtf8IfExplicitlySettingThrowFlag(): void
+    {
+        $this->expectException(InvalidArgumentException::class);
+        $this->expectExceptionMessage('Unable to encode');
+
+        new JsonResponse("\xff", encodingOptions: JsonResponse::DEFAULT_JSON_FLAGS | JSON_THROW_ON_ERROR);
+    }
+
     /** @return non-empty-array<non-empty-string, array{non-empty-string, non-empty-string}> */
     public function valuesToJsonEncode(): array
     {