actix unit test

test.rs

    fn body_contains(response: &HttpResponse, fragment: &str) -> bool {
        // TODO: this looks really complicated. I must be missing something here :/
        let body = response.body();
        if let Binary(b) = body {
            if let Bytes(bytes) = b {
                let text = str::from_utf8(&bytes).unwrap();
                return text.contains(fragment);
            }
        }
        panic!("Expecting a binary response");
    }