Rust Programming Cookbook

How to do it...

Follow these steps to learn more about creating a test suite for your Rust projects:

1. Once created, a library project already contains a very simple test (probably to encourage you to write more). The cfg(test) and test attributes tell cargo (the test runner) how to deal with the module:

#[cfg(test)]mod tests {    #[test]    fn it_works() {        assert_eq!(2 + 2, 4);    }}

2. Before we add further tests, let's add a subject that needs testing. In this case, let's use something interesting: a singly linked list from our other book (Hands-On Data Structures and Algorithms with Rust) made generic. It consists of three parts. First is a node type:

#[derive(Clone)]struct Node<T> where T: Sized + Clone {    value: T,    next: Link<T>,}impl<T> Node<T> ...