expectmockedFunctiontoHaveBeenCalled

expectmocked is a lightweight, Python-based library designed to simplify the process of writing unit tests with mocking capabilities. It is particularly useful for developers who want to avoid the complexity of traditional mocking frameworks while still ensuring reliable test isolation. The library is inspired by the simplicity of tools like Ruby’s RSpec and aims to provide a more intuitive syntax for mocking and stubbing objects in Python.

expectmocked follows a fluent interface, allowing developers to chain method calls for setting up expectations and stubs in a readable manner. It supports common mocking scenarios, such as stubbing method returns, raising exceptions, and verifying interactions. The library is built on top of Python’s built-in `unittest` framework, making it easy to integrate into existing test suites without requiring additional dependencies.

One of the key features of expectmocked is its ability to mock both built-in and third-party modules without patching the entire module, which can be cumbersome with other mocking tools. It also provides clear error messages when expectations are not met, helping developers quickly identify issues in their tests. The library is particularly well-suited for testing applications that rely heavily on external dependencies, such as APIs or databases, where isolation is critical.

expectmocked is maintained as an open-source project and is distributed under a permissive license, allowing for easy adoption in both personal and commercial projects. Its simplicity and focus on developer experience make it a popular choice among Python developers who prioritize clean, maintainable test code. While it may not offer the same level of advanced features as more heavyweight mocking libraries, its ease of use and minimalist design cater well to projects where simplicity is valued over extensive functionality.