✅ test: add test cases for RFC 9457 implementation

Author: jobs62

osc_sdk/test_problems.py

@@ -0,0 +1,21 @@
+import json
+from typing import List
+
+import pytest
+
+from .sdk import Problem, ProblemDecoder
+
+RAW_JSONS: List[str] = [
+    r'{"type":"/errors/unsupported_media_type","status":415,"title":"Unsupported Media Type","detail":"Expected request with `Content-Type: application/json`"}',
+    r'{"type":"/errors/invalid_parameter","status":400,"title":"Bad Request","detail":"Origin: unknown variant `BAD_VALUE`, expected `OSC_KMS` or `EXTERNAL`"}',
+    r'{"type":"/errors/invalid_parameter","status":400,"title":"Bad Request","detail":"missing field `KeyId`"}',
+    r'{"type":"/errors/invalid_parameter","status":400,"title":"Bad Request","detail":"KeyId: \'mck-toto\' is not a key ID, an alias name, a key ORN or an alias ORN"}',
+    r'{"type":"/errors/invalid_parameter","status":404,"title":"Not Found","detail":"Key not found: mck-6480ba0cd94845deb4967f18c6b32cb1"}',
+]
+
+
+@pytest.mark.parametrize("raw_json", RAW_JSONS)
+def test_decode_raw_json_errors(raw_json: str):
+    """Test that ProblemDecoder can correctly decode raw JSON error strings."""
+    decoded = json.loads(raw_json, cls=ProblemDecoder)
+    assert isinstance(decoded, Problem)