Implementation of Borrow is not general enough

[pismute]

Hello, thank you for the wonderful crate.

I am not good at Rust and mockall. I can't make it work myself:

error: implementation of `Borrow` is not general enough
  --> src/main.rs:28:9
   |
28 | /         dummy
29 | |             .expect_example()
30 | |             .with(eq(vec!["request", "path"]))
   | |______________________________________________^ implementation of `Borrow` is not general enough
   |
   = note: `Vec<&'2 str>` must implement `Borrow<Vec<&'1 str>>`, for any lifetime `'1`...
   = note: ...but it actually implements `Borrow<Vec<&'2 str>>`, for some specific lifetime `'2`

Here are my example:

trait ExternalTrait {
    fn example(&self, path: Vec<&str>) -> Option<bool>;
}

#[cfg(test)]
mod tests {
    use mockall::predicate::*;
    use mockall::*;

    use super::*;

    mock! {
        pub(crate) Dummy {}

        impl ExternalTrait for Dummy {
            fn example<'a, 'b>(&'a self, path: Vec<&'b str>) -> Option<bool>;
        }
    }

    #[test]
    fn expect_get_request_path() {
        let mut dummy = MockDummy::new();

        dummy
            .expect_example()
            .with(eq(vec!["request", "path"]))
            .return_const(Some(true));
    }
}

I am not sure I am doing right.

[pismute]

Hi, I have figured out a workaround.

        dummy
            .expect_example()
            .withf(|p| p == &vec!["request", "path"])
            .return_const(Some(true));