Add tool usage events

tests/agent_test.py

@@ -12,9 +12,11 @@ from crewai.llm import LLM
 from crewai.agents.parser import CrewAgentParser, OutputParserException
 from crewai.tools.tool_calling import InstructorToolCalling
 from crewai.tools.tool_usage import ToolUsage
+from crewai.tools.tool_usage_events import ToolUsageFinished
 from crewai.utilities import RPMController
 from crewai_tools import tool
 from crewai.agents.parser import AgentAction
+from crewai.utilities.events import Emitter
 
 
 def test_agent_llm_creation_with_env_vars():
@@ -178,8 +180,15 @@ def test_agent_execution_with_tools():
         agent=agent,
         expected_output="The result of the multiplication.",
     )
-    output = agent.execute_task(task)
-    assert output == "The result of the multiplication is 12."
+    with patch.object(Emitter, "emit") as emit:
+        output = agent.execute_task(task)
+        assert output == "The result of the multiplication is 12."
+        assert emit.call_count == 1
+        args, _ = emit.call_args
+        assert isinstance(args[1], ToolUsageFinished)
+        assert not args[1].from_cache
+        assert args[1].tool_name == "multiplier"
+        assert args[1].tool_args == {"first_number": 3, "second_number": 4}
 
 
 @pytest.mark.vcr(filter_headers=["authorization"])
@@ -267,7 +276,7 @@ def test_cache_hitting():
         "multiplier-{'first_number': 12, 'second_number': 3}": 36,
     }
 
-    with patch.object(CacheHandler, "read") as read:
+    with patch.object(CacheHandler, "read") as read, patch.object(Emitter, "emit") as emit:
         read.return_value = "0"
         task = Task(
             description="What is 2 times 6? Ignore correctness and just return the result of the multiplication tool, you must use the tool.",
@@ -279,6 +288,10 @@ def test_cache_hitting():
         read.assert_called_with(
             tool="multiplier", input={"first_number": 2, "second_number": 6}
         )
+        assert emit.call_count == 1
+        args, _ = emit.call_args
+        assert isinstance(args[1], ToolUsageFinished)
+        assert args[1].from_cache
 
 
 @pytest.mark.vcr(filter_headers=["authorization"])