Files
crewAI/tests/tools/test_tool_usage_limit.py
Devin AI 7f730fbe02 Add usage limit feature to BaseTool class
- Add max_usage_count and current_usage_count attributes to BaseTool
- Implement usage limit checking in ToolUsage._use method
- Add comprehensive tests for usage limit functionality
- Maintain backward compatibility with None default for unlimited usage

Co-Authored-By: Joe Moura <joao@crewai.com>
2025-05-26 06:39:49 +00:00

69 lines
2.0 KiB
Python

import pytest
from unittest.mock import MagicMock, patch
from crewai.tools import BaseTool, tool
def test_tool_usage_limit():
"""Test that tools respect usage limits."""
class LimitedTool(BaseTool):
name: str = "Limited Tool"
description: str = "A tool with usage limits for testing"
max_usage_count: int = 2
def _run(self, input_text: str) -> str:
return f"Processed {input_text}"
tool = LimitedTool()
result1 = tool.run(input_text="test1")
assert result1 == "Processed test1"
assert tool.current_usage_count == 1
result2 = tool.run(input_text="test2")
assert result2 == "Processed test2"
assert tool.current_usage_count == 2
def test_unlimited_tool_usage():
"""Test that tools without usage limits work normally."""
class UnlimitedTool(BaseTool):
name: str = "Unlimited Tool"
description: str = "A tool without usage limits"
def _run(self, input_text: str) -> str:
return f"Processed {input_text}"
tool = UnlimitedTool()
for i in range(5):
result = tool.run(input_text=f"test{i}")
assert result == f"Processed test{i}"
assert tool.current_usage_count == i + 1
def test_tool_decorator_with_usage_limit():
"""Test usage limit with @tool decorator."""
@tool("Test Tool", max_usage_count=3)
def test_tool(input_text: str) -> str:
"""A test tool."""
return f"Result: {input_text}"
assert test_tool.max_usage_count == 3
assert test_tool.current_usage_count == 0
result = test_tool.run(input_text="test")
assert result == "Result: test"
assert test_tool.current_usage_count == 1
def test_default_unlimited_usage():
"""Test that tools have unlimited usage by default."""
@tool("Default Tool")
def default_tool(input_text: str) -> str:
"""A default tool."""
return f"Result: {input_text}"
assert default_tool.max_usage_count is None
assert default_tool.current_usage_count == 0