Improve tests (#795)

tests/llm/test_vertex_ai.py

@@ -0,0 +1,63 @@
+import pytest
+from unittest.mock import MagicMock, patch
+from embedchain.llm.vertex_ai import VertexAiLlm
+from embedchain.config import BaseLlmConfig
+from langchain.schema import HumanMessage, SystemMessage
+
+
+@pytest.fixture
+def vertexai_llm():
+    config = BaseLlmConfig(temperature=0.6, model="vertexai_model", system_prompt="System Prompt")
+    return VertexAiLlm(config)
+
+
+def test_get_llm_model_answer(vertexai_llm):
+    with patch.object(VertexAiLlm, "_get_answer", return_value="Test Response") as mock_method:
+        prompt = "Test Prompt"
+        response = vertexai_llm.get_llm_model_answer(prompt)
+        assert response == "Test Response"
+        mock_method.assert_called_once_with(prompt=prompt, config=vertexai_llm.config)
+
+
+def test_get_answer_with_warning(vertexai_llm, caplog):
+    with patch("langchain.chat_models.ChatVertexAI") as mock_chat:
+        mock_chat_instance = mock_chat.return_value
+        mock_chat_instance.return_value = MagicMock(content="Test Response")
+
+        prompt = "Test Prompt"
+        config = vertexai_llm.config
+        config.top_p = 0.5
+
+        response = vertexai_llm._get_answer(prompt, config)
+
+        assert response == "Test Response"
+        mock_chat.assert_called_once_with(temperature=config.temperature, model=config.model)
+
+        assert "Config option `top_p` is not supported by this model." in caplog.text
+
+
+def test_get_answer_no_warning(vertexai_llm, caplog):
+    with patch("langchain.chat_models.ChatVertexAI") as mock_chat:
+        mock_chat_instance = mock_chat.return_value
+        mock_chat_instance.return_value = MagicMock(content="Test Response")
+
+        prompt = "Test Prompt"
+        config = vertexai_llm.config
+        config.top_p = 1.0
+
+        response = vertexai_llm._get_answer(prompt, config)
+
+        assert response == "Test Response"
+        mock_chat.assert_called_once_with(temperature=config.temperature, model=config.model)
+
+        assert "Config option `top_p` is not supported by this model." not in caplog.text
+
+
+def test_get_messages(vertexai_llm):
+    prompt = "Test Prompt"
+    system_prompt = "Test System Prompt"
+    messages = vertexai_llm._get_messages(prompt, system_prompt)
+    assert messages == [
+        SystemMessage(content="Test System Prompt", additional_kwargs={}),
+        HumanMessage(content="Test Prompt", additional_kwargs={}, example=False),
+    ]