> For the complete documentation index, see [llms.txt](https://giuseppe-mazzapica.gitbook.io/brain-monkey/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://giuseppe-mazzapica.gitbook.io/brain-monkey/functions-testing-tools.md).

# Functions testing tools

- [Setup for functions testing](https://giuseppe-mazzapica.gitbook.io/brain-monkey/functions-testing-tools/functions-setup.md)
- [Patching functions with when()](https://giuseppe-mazzapica.gitbook.io/brain-monkey/functions-testing-tools/functions-when.md)
- [Bulk patching with stubs()](https://giuseppe-mazzapica.gitbook.io/brain-monkey/functions-testing-tools/function-stubs.md)
- [Testing functions with expect()](https://giuseppe-mazzapica.gitbook.io/brain-monkey/functions-testing-tools/functions-expect.md)