Macro test_case 

macro_rules! test_case {
    (
        async fn $name:ident($case:ident: &APITestCase) $body:block
    ) => { ... };
}

Helper macro for defining test cases with automatic setup/teardown

Example

test_case! {
    async fn test_get_users(case: &APITestCase) {
        let client = case.client().await;
        let response = client.get("/api/users/").await.unwrap();
        response.assert_ok();
    }
}