Feature | Added isJson and isXML functions to Response class

src/Http/Response.php

@@ -489,6 +489,38 @@ public function header(string $header): string|array|null
         return $this->headers()->get($header);
     }
 
+    /**
+     * Determine if the response is in JSON format.
+     *
+     * @return bool
+     */
+    public function isJson(): bool
+    {
+        $contentType = $this->header('Content-Type');
+
+        if(is_null($contentType)) {
+            return false;
+        }
+
+        return str_contains($contentType, 'json');
+    }
+
+    /**
+     * Determine if the response is in XML format.
+     *
+     * @return bool
+     */
+    public function isXml(): bool
+    {
+        $contentType = $this->header('Content-Type');
+
+        if(is_null($contentType)) {
+            return false;
+        }
+
+        return str_contains($contentType, 'xml');
+    }
+
     /**
      * Create a temporary resource for the stream.
      *

tests/Unit/ResponseTest.php

@@ -408,3 +408,57 @@
 
     expect($response->yee())->toEqual('haw');
 });
+
+test('can determine if response is JSON', function () {
+    $mockClient = new MockClient([
+        // JSON content type
+        MockResponse::make(['foo' => 'bar'], 200, ['Content-Type' => 'application/json']),
+        // JSON with charset
+        MockResponse::make(['foo' => 'bar'], 200, ['Content-Type' => 'application/json; charset=utf-8']),
+        // Non-JSON content type
+        MockResponse::make('plain text', 200, ['Content-Type' => 'text/plain']),
+        // No content type
+        MockResponse::make('no content type', 200, []),
+    ]);
+
+    $connector = connector();
+
+    $response = $connector->send(new UserRequest, $mockClient);
+    expect($response->isJson())->toBeTrue();
+
+    $response = $connector->send(new UserRequest, $mockClient);
+    expect($response->isJson())->toBeTrue();
+
+    $response = $connector->send(new UserRequest, $mockClient);
+    expect($response->isJson())->toBeFalse();
+
+    $response = $connector->send(new UserRequest, $mockClient);
+    expect($response->isJson())->toBeFalse();
+});
+
+test('can determine if response is XML', function () {
+    $mockClient = new MockClient([
+        // XML content type
+        MockResponse::make('<?xml version="1.0"?><root></root>', 200, ['Content-Type' => 'application/xml']),
+        // XML with charset
+        MockResponse::make('<?xml version="1.0"?><root></root>', 200, ['Content-Type' => 'text/xml; charset=utf-8']),
+        // Non-XML content type
+        MockResponse::make('plain text', 200, ['Content-Type' => 'text/plain']),
+        // No content type
+        MockResponse::make('no content type', 200, []),
+    ]);
+
+    $connector = connector();
+
+    $response = $connector->send(new UserRequest, $mockClient);
+    expect($response->isXml())->toBeTrue();
+
+    $response = $connector->send(new UserRequest, $mockClient);
+    expect($response->isXml())->toBeTrue();
+
+    $response = $connector->send(new UserRequest, $mockClient);
+    expect($response->isXml())->toBeFalse();
+
+    $response = $connector->send(new UserRequest, $mockClient);
+    expect($response->isXml())->toBeFalse();
+});