bug #934 [Platform][Anthropic] Add error handling for missing models in Anthropic bridge (chr-hertel)

This PR was merged into the main branch.

Discussion
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[Platform][Anthropic] Add error handling for missing models in Anthropic bridge

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| Docs?         | no
| Issues        |
| License       | MIT

Was hidden with "Response does not contain any content"

Commits
-------

b0a6a76 Add error handling for missing models in Anthropic bridge

Author: chr-hertel

src/platform/src/Bridge/Anthropic/ResultConverter.php

@@ -49,6 +49,12 @@ public function convert(RawHttpResult|RawResultInterface $result, array $options
 
         $data = $result->getData();
 
+        if (isset($data['type']) && 'error' === $data['type']) {
+            $type = $data['error']['type'] ?? 'Unknown';
+            $message = $data['error']['message'] ?? 'An unknown error occurred.';
+            throw new RuntimeException(\sprintf('API Error [%s]: "%s"', $type, $message));
+        }
+
         if (!isset($data['content']) || [] === $data['content']) {
             throw new RuntimeException('Response does not contain any content.');
         }

src/platform/tests/Bridge/Anthropic/ResultConverterTest.php

@@ -13,10 +13,12 @@
 
 use PHPUnit\Framework\TestCase;
 use Symfony\AI\Platform\Bridge\Anthropic\ResultConverter;
+use Symfony\AI\Platform\Exception\RuntimeException;
 use Symfony\AI\Platform\Result\RawHttpResult;
 use Symfony\AI\Platform\Result\ToolCallResult;
 use Symfony\Component\HttpClient\MockHttpClient;
 use Symfony\Component\HttpClient\Response\JsonMockResponse;
+use Symfony\Component\HttpClient\Response\MockResponse;
 
 final class ResultConverterTest extends TestCase
 {
@@ -42,4 +44,34 @@ public function testConvertThrowsExceptionWhenContentIsToolUseAndLacksText()
         $this->assertSame('xxx_tool', $result->getContent()[0]->getName());
         $this->assertSame(['action' => 'get_data'], $result->getContent()[0]->getArguments());
     }
+
+    public function testModelNotFoundError()
+    {
+        $httpClient = new MockHttpClient([
+            new MockResponse('{"type":"error","error":{"type":"not_found_error","message":"model: claude-3-5-sonnet-20241022"}}'),
+        ]);
+
+        $response = $httpClient->request('POST', 'https://api.anthropic.com/v1/messages');
+        $converter = new ResultConverter();
+
+        $this->expectException(RuntimeException::class);
+        $this->expectExceptionMessage('API Error [not_found_error]: "model: claude-3-5-sonnet-20241022"');
+
+        $converter->convert(new RawHttpResult($response));
+    }
+
+    public function testUnknownError()
+    {
+        $httpClient = new MockHttpClient([
+            new MockResponse('{"type":"error"}'),
+        ]);
+
+        $response = $httpClient->request('POST', 'https://api.anthropic.com/v1/messages');
+        $converter = new ResultConverter();
+
+        $this->expectException(RuntimeException::class);
+        $this->expectExceptionMessage('API Error [Unknown]: "An unknown error occurred."');
+
+        $converter->convert(new RawHttpResult($response));
+    }
 }