fix

Signed-off-by: dbczumar <corey.zumar@databricks.com>

dspy/utils/dummies.py

@@ -7,8 +7,9 @@
 
 from dsp.modules import LM as DSPLM
 from dsp.utils.utils import dotdict
-from dspy.adapters.chat_adapter import field_header_pattern, format_fields
+from dspy.adapters.chat_adapter import FieldInfoWithName, field_header_pattern, format_fields
 from dspy.clients.lm import LM
+from dspy.signatures.field import OutputField
 
 
 class DSPDummyLM(DSPLM):
@@ -170,6 +171,10 @@ def _use_example(self, messages):
                 return output["content"]
 
     def __call__(self, prompt=None, messages=None, **kwargs):
+        def format_answer_field(field_name, answer):
+            field = FieldInfoWithName(name=field_name, info=OutputField())
+            return format_fields(fields_with_values={field: answer})
+
         # Build the request.
         outputs = []
         for _ in range(kwargs.get("n", 1)):
@@ -181,12 +186,12 @@ def __call__(self, prompt=None, messages=None, **kwargs):
             elif isinstance(self.answers, dict):
                 outputs.append(
                     next(
-                        (format_fields(v) for k, v in self.answers.items() if k in messages[-1]["content"]),
+                        (format_answer_field(k, v) for k, v in self.answers.items() if k in messages[-1]["content"]),
                         "No more responses",
                     )
                 )
             else:
-                outputs.append(format_fields(next(self.answers, {"answer": "No more responses"})))
+                outputs.append(format_answer_field(**next(self.answers, {"answer": "No more responses"})))
 
             # Logging, with removed api key & where `cost` is None on cache hit.
             kwargs = {k: v for k, v in kwargs.items() if not k.startswith("api_")}