Testing Your Rust Web API

A boilerplate setup with best practices for testing your axum backend that scales nicely for larger codebases with lots of test cases. Features:

• Convenient custom HTTP client making tests easier to write
• Github Action that runs tests, verifies formatting etc.

This repo is also the example code for "End-to-end Testing Your Rust Backend", a talk held at EuroRust 2022. If you want to know more about the techniques used here, check out the talk!

Here's a short guide to reading the code:

1. Check out the application under test in src/lib.rs. It's a little dog registry written using axum where you can insert and list your dogs using a REST API.
2. Look at tests/dogs.rs for two examples of how a test for this API could look. v1 is similar to the official axum examples, while v2 uses a test request builder to achieve the same result with less code.
3. See tests/testing_utilities.rs for the implementation of the request builder.
4. In tests/generic.rs, you can see how we can use the request builder to run the same test against multiple endpoints.

Running the tests

In your terminal, enter:

cargo test