feat: register GCPDetector in the OIDC detector chain

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: cloudsmith-iduffy

cloudsmith_cli/core/credentials/oidc/detectors/__init__.py

@@ -7,6 +7,7 @@
 
 from .aws import AWSDetector
 from .base import EnvironmentDetector
+from .gcp import GCPDetector
 from .generic import GenericDetector
 
 if TYPE_CHECKING:
@@ -16,6 +17,7 @@
 
 _DETECTORS: list[type[EnvironmentDetector]] = [
     AWSDetector,
+    GCPDetector,
     GenericDetector,
 ]
 

cloudsmith_cli/core/tests/test_gcp_detector.py

@@ -159,3 +159,14 @@ def test_raises_when_adc_has_no_id_token(self):
             get.side_effect = requests.exceptions.ConnectionError()
             with pytest.raises(ValueError):
                 make_detector().get_token()
+
+
+class TestRegistration:
+    def test_registered_between_aws_and_generic(self):
+        from cloudsmith_cli.core.credentials.oidc.detectors import (
+            _DETECTORS,
+            AWSDetector,
+            GenericDetector,
+        )
+
+        assert _DETECTORS == [AWSDetector, GCPDetector, GenericDetector]