Include keyword-only prediction inputs in validation and schemas

tests/test_argument_regressions.py

@@ -0,0 +1,19 @@
+import pytest
+from fastapi.testclient import TestClient
+
+from great_ai import GreatAI
+
+
+def test_keyword_only_inputs_are_validated_and_exposed(isolated_context: None) -> None:
+    @GreatAI.create
+    def predict(*, value: int) -> int:
+        return value
+
+    trace = predict(value=7)
+    assert trace.output == 7
+    assert trace.logged_values["arg:value:value"] == 7
+    with pytest.raises(TypeError):
+        predict(value="wrong")
+    with TestClient(predict.app) as client:
+        assert client.post("/predict", json={"value": 8}).json()["output"] == 8
+        assert client.post("/predict", json={"value": "wrong"}).status_code == 422