feat: GenAI SDK client - add zero-shot prompt optimizer (streaming): an option to quickly improve or generate system instructions or a single prompt.

PiperOrigin-RevId: 789146000

Author: vertex-sdk-bot

tests/unit/vertexai/genai/replays/test_prompt_optimizer_optimize_prompt.py

@@ -0,0 +1,44 @@
+# 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.
+#
+# pylint: disable=protected-access,bad-continuation,missing-function-docstring
+
+import logging
+
+from tests.unit.vertexai.genai.replays import pytest_helper
+from vertexai._genai import types
+import pytest
+
+logger = logging.getLogger("vertexai_genai.promptoptimizer")
+logging.basicConfig(encoding="utf-8", level=logging.DEBUG, force=True)
+
+
+def test_optimize_prompt(client):
+  """Tests the optimize request parameters method."""
+
+  logger.info("test_optimize_prompt")
+  client._api_client._http_options.base_url = (
+      "https://us-central1-autopush-aiplatform.sandbox.googleapis.com"
+  )
+  test_prompt = "Generate system instructions for analyzing medical articles"
+  response = client.prompt_optimizer.optimize_prompt(prompt=test_prompt)
+  logger.info("response type: %s", type(response))
+  logger.info("response: %s", response)
+
+
+pytestmark = pytest_helper.setup(
+    file=__file__,
+    globals_for_file=globals(),
+    test_method="prompt_optimizer.optimize_prompt",
+)