Refactor Google embedder error handling and expand test coverage

Co-Authored-By: Joe Moura <joao@crewai.com>

tests/knowledge/test_google_embedder.py

@@ -1,7 +1,11 @@
+from unittest.mock import MagicMock, patch
+
 import pytest
-from unittest.mock import patch, MagicMock
-from crewai import Crew, Agent, Task
+
+from crewai import Agent, Crew, Task
 from crewai.knowledge.source.json_knowledge_source import JSONKnowledgeSource
+from crewai.utilities.constants import GOOGLE_EMBEDDER_PACKAGE_ERROR_MSG
+
 
 def test_google_embedder_missing_package():
     """Test that a helpful error message is displayed when google-generativeai is not installed."""
@@ -45,7 +49,100 @@ def test_google_embedder_missing_package():
             # Verify that the error message was logged correctly
             mock_log.assert_any_call(
                 "error",
-                "Google AI Studio embedder requires the google-generativeai package. "
-                "Please install it with `pip install google-generativeai`",
+                GOOGLE_EMBEDDER_PACKAGE_ERROR_MSG,
                 color="red"
             )
+
+
+def test_google_embedder_invalid_api_key():
+    """Test that a warning is logged when an invalid API key is provided."""
+    # Create a simple agent and task
+    agent = Agent(
+        role="Test Agent",
+        goal="Test the knowledge component",
+        backstory="I am a test agent",
+    )
+
+    task = Task(
+        description="Test task",
+        expected_output="Test output",
+        agent=agent,
+    )
+
+    # Create a mock JSONKnowledgeSource
+    json_knowledge_source = MagicMock(spec=JSONKnowledgeSource)
+
+    # Mock the GoogleGenerativeAiEmbeddingFunction to raise an exception for invalid API key
+    with patch("chromadb.utils.embedding_functions.google_embedding_function.GoogleGenerativeAiEmbeddingFunction.__init__") as mock_init:
+        mock_init.side_effect = ValueError("Invalid API key")
+        
+        # Mock the logger to capture the warning message
+        with patch("crewai.utilities.logger.Logger.log") as mock_log:
+            # Create a crew with Google embedder
+            crew = Crew(
+                agents=[agent],
+                tasks=[task],
+                verbose=True,
+                knowledge_sources=[json_knowledge_source],
+                embedder={
+                    "provider": "google",
+                    "config": {
+                        "api_key": "invalid-api-key",
+                        "model": 'models/embedding-001'
+                    }
+                }
+            )
+            
+            # Verify that the warning message was logged correctly
+            mock_log.assert_any_call(
+                "warning",
+                "Failed to init knowledge: Invalid API key",
+                color="yellow"
+            )
+
+
+def test_google_embedder_invalid_model():
+    """Test that a warning is logged when an invalid model is provided."""
+    # Create a simple agent and task
+    agent = Agent(
+        role="Test Agent",
+        goal="Test the knowledge component",
+        backstory="I am a test agent",
+    )
+
+    task = Task(
+        description="Test task",
+        expected_output="Test output",
+        agent=agent,
+    )
+
+    # Create a mock JSONKnowledgeSource
+    json_knowledge_source = MagicMock(spec=JSONKnowledgeSource)
+
+    # Mock the GoogleGenerativeAiEmbeddingFunction to raise an exception for invalid model
+    with patch("chromadb.utils.embedding_functions.google_embedding_function.GoogleGenerativeAiEmbeddingFunction.__init__") as mock_init:
+        mock_init.side_effect = ValueError("Invalid model name")
+        
+        # Mock the logger to capture the warning message
+        with patch("crewai.utilities.logger.Logger.log") as mock_log:
+            # Create a crew with Google embedder
+            crew = Crew(
+                agents=[agent],
+                tasks=[task],
+                verbose=True,
+                knowledge_sources=[json_knowledge_source],
+                embedder={
+                    "provider": "google",
+                    "config": {
+                        "api_key": "fake-api-key",
+                        "model": 'invalid-model'
+                    }
+                }
+            )
+            
+            # Verify that the warning message was logged correctly
+            mock_log.assert_any_call(
+                "warning",
+                "Failed to init knowledge: Invalid model name",
+                color="yellow"
+            )