How to combine quickcheck 1+ with fake?

[marktani]

How to combine quickcheck 1+ with fake?

[joshuamegnauth54]

I've encountered the same issue. I solved it in a hacky way by reimplementing SafeEmail.

#[cfg(test)]
mod tests {
    use fake::locales::{self, Data};
    use quickcheck::{Arbitrary, Gen};

    #[derive(Debug, Clone)]
    struct ValidEmailFixture(pub String);

    impl Arbitrary for ValidEmailFixture {
        fn arbitrary(g: &mut Gen) -> Self {
            let username = g
                .choose(locales::EN::NAME_FIRST_NAME)
                .unwrap()
                .to_lowercase();
            let domain = g.choose(&["com", "net", "org"]).unwrap();
            let email = format!("{username}@example.{domain}");
            Self(email)
        }
    }

    #[quickcheck_macros::quickcheck]
    fn valid_emails_are_parsed_successfully(email: ValidEmailFixture) -> bool {
        SubscriberEmail::parse(email.0).is_ok()
    }
}

Not ideal but also not too bad.

Zero to Production's author, Luca Palmieri, posted an excerpt that covers OP's code above if anyone wants to follow along.

[npuichigo]

Same issue here @BurntSushi. How to use quickcheck together with other tools like fake which needs an RNG