Adding Pydantic data models for eval set and eval case.

PiperOrigin-RevId: 757920694

src/google/adk/evaluation/eval_set.py

@@ -0,0 +1,37 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import Optional
+from pydantic import BaseModel
+from .eval_case import EvalCase
+
+
+class EvalSet(BaseModel):
+  """A set of eval cases."""
+
+  eval_set_id: str
+  """Unique identifier for the eval set."""
+
+  name: Optional[str]
+  """Name of the dataset."""
+
+  description: Optional[str]
+  """Description of the dataset."""
+
+  eval_cases: list[EvalCase]
+  """List of eval cases in the dataset. Each case represents a single
+  interaction to be evaluated."""
+
+  creation_timestamp: float = 0.0
+  """The time at which this eval set was created."""