feat: ADK cli allows developers to create an eval set and add an eval case

Agent developers can now create an eval set and add eval cases through command line itself. Adding an eval case is limited only to specifying conversation scenarios.

Sample comamnds:
- Create an eval set:
adk eval_set create \
    contributing/samples/hello_world \
    set_01

- Add an eval case with scenario file
Content of scenarios.json file:
'{"scenarios": [{"starting_prompt": "hello", "conversation_plan": "world"}]}'

adk eval_set add_eval_case \
    contributing/samples/hello_world \
    set_01 \
    --scenarios scenarios.json

PiperOrigin-RevId: 817456117

tests/unittests/cli/utils/test_cli_tools_click.py

@@ -18,6 +18,7 @@
 from __future__ import annotations
 
 import builtins
+import json
 from pathlib import Path
 from types import SimpleNamespace
 from typing import Any
@@ -620,6 +621,177 @@ def test_cli_eval_with_eval_set_id(
   assert len(eval_set_results) == 2
 
 
+def test_cli_create_eval_set(tmp_path: Path):
+  app_name = "test_app"
+  eval_set_id = "test_eval_set"
+  agent_path = tmp_path / app_name
+  agent_path.mkdir()
+  (agent_path / "__init__.py").touch()
+
+  runner = CliRunner()
+  result = runner.invoke(
+      cli_tools_click.main,
+      ["eval_set", "create", str(agent_path), eval_set_id],
+  )
+
+  assert result.exit_code == 0
+  eval_set_file = agent_path / f"{eval_set_id}.evalset.json"
+  assert eval_set_file.exists()
+  with open(eval_set_file, "r") as f:
+    eval_set_data = json.load(f)
+  assert eval_set_data["eval_set_id"] == eval_set_id
+  assert eval_set_data["eval_cases"] == []
+
+
+def test_cli_add_eval_case_no_session(tmp_path: Path):
+  app_name = "test_app_add_1"
+  eval_set_id = "test_eval_set_add_1"
+  agent_path = tmp_path / app_name
+  agent_path.mkdir()
+  (agent_path / "__init__.py").touch()
+
+  scenarios_file = tmp_path / "scenarios1.json"
+  scenarios_file.write_text(
+      '{"scenarios": [{"starting_prompt": "hello", "conversation_plan":'
+      ' "world"}]}'
+  )
+
+  runner = CliRunner()
+  runner.invoke(
+      cli_tools_click.main,
+      ["eval_set", "create", str(agent_path), eval_set_id],
+      catch_exceptions=False,
+  )
+  result = runner.invoke(
+      cli_tools_click.main,
+      [
+          "eval_set",
+          "add_eval_case",
+          str(agent_path),
+          eval_set_id,
+          "--scenarios_file",
+          str(scenarios_file),
+      ],
+      catch_exceptions=False,
+  )
+
+  assert result.exit_code == 0
+  eval_set_file = agent_path / f"{eval_set_id}.evalset.json"
+  assert eval_set_file.exists()
+  with open(eval_set_file, "r") as f:
+    eval_set_data = json.load(f)
+  assert len(eval_set_data["eval_cases"]) == 1
+  eval_case = eval_set_data["eval_cases"][0]
+  assert eval_case["eval_id"] == "0a1a5048"
+  assert eval_case["conversation_scenario"]["starting_prompt"] == "hello"
+  assert "session_input" not in eval_case
+
+
+def test_cli_add_eval_case_with_session(tmp_path: Path):
+  app_name = "test_app_add_2"
+  eval_set_id = "test_eval_set_add_2"
+  agent_path = tmp_path / app_name
+  agent_path.mkdir()
+  (agent_path / "__init__.py").touch()
+
+  scenarios_file = tmp_path / "scenarios2.json"
+  scenarios_file.write_text(
+      '{"scenarios": [{"starting_prompt": "hello", "conversation_plan":'
+      ' "world"}]}'
+  )
+  session_file = tmp_path / "session2.json"
+  session_file.write_text(
+      '{"app_name": "test_app_add_2", "user_id": "test_user", "state": {}}'
+  )
+
+  runner = CliRunner()
+  runner.invoke(
+      cli_tools_click.main,
+      ["eval_set", "create", str(agent_path), eval_set_id],
+      catch_exceptions=False,
+  )
+  result = runner.invoke(
+      cli_tools_click.main,
+      [
+          "eval_set",
+          "add_eval_case",
+          str(agent_path),
+          eval_set_id,
+          "--scenarios_file",
+          str(scenarios_file),
+          "--session_input_file",
+          str(session_file),
+      ],
+      catch_exceptions=False,
+  )
+
+  assert result.exit_code == 0
+  eval_set_file = agent_path / f"{eval_set_id}.evalset.json"
+  assert eval_set_file.exists()
+  with open(eval_set_file, "r") as f:
+    eval_set_data = json.load(f)
+  assert len(eval_set_data["eval_cases"]) == 1
+  eval_case = eval_set_data["eval_cases"][0]
+  assert eval_case["eval_id"] == "0a1a5048"
+  assert eval_case["session_input"]["app_name"] == "test_app_add_2"
+
+
+def test_cli_add_eval_case_skip_existing(tmp_path: Path):
+  app_name = "test_app_add_3"
+  eval_set_id = "test_eval_set_add_3"
+  agent_path = tmp_path / app_name
+  agent_path.mkdir()
+  (agent_path / "__init__.py").touch()
+
+  scenarios_file = tmp_path / "scenarios3.json"
+  scenarios_file.write_text(
+      '{"scenarios": [{"starting_prompt": "hello", "conversation_plan":'
+      ' "world"}]}'
+  )
+
+  runner = CliRunner()
+  runner.invoke(
+      cli_tools_click.main,
+      ["eval_set", "create", str(agent_path), eval_set_id],
+      catch_exceptions=False,
+  )
+  result1 = runner.invoke(
+      cli_tools_click.main,
+      [
+          "eval_set",
+          "add_eval_case",
+          str(agent_path),
+          eval_set_id,
+          "--scenarios_file",
+          str(scenarios_file),
+      ],
+      catch_exceptions=False,
+  )
+  eval_set_file = agent_path / f"{eval_set_id}.evalset.json"
+  with open(eval_set_file, "r") as f:
+    eval_set_data1 = json.load(f)
+
+  result2 = runner.invoke(
+      cli_tools_click.main,
+      [
+          "eval_set",
+          "add_eval_case",
+          str(agent_path),
+          eval_set_id,
+          "--scenarios_file",
+          str(scenarios_file),
+      ],
+      catch_exceptions=False,
+  )
+  with open(eval_set_file, "r") as f:
+    eval_set_data2 = json.load(f)
+
+  assert result1.exit_code == 0
+  assert result2.exit_code == 0
+  assert len(eval_set_data1["eval_cases"]) == 1
+  assert len(eval_set_data2["eval_cases"]) == 1
+
+
 def test_cli_deploy_cloud_run_gcloud_arg_conflict(
     tmp_path: Path, monkeypatch: pytest.MonkeyPatch
 ) -> None: