use std::{    collections::{BTreeSet, HashSet},    iter::FromIterator,}; use git_refspec::{parse::Operation, RefSpec}; fn pair() -> Vec<RefSpec> {    let lhs = git_refspec::parse("refs/heads/foo".into(), Operation::Push).unwrap();    let rhs = git_refspec::parse("refs/heads/foo:refs/heads/foo".into(), Operation::Push).unwrap();    vec![lhs.to_owned(), rhs.to_owned()]} #[test]fn cmp() {    assert_eq!(BTreeSet::from_iter(pair()).len(), 1)} #[test]fn hash() {    let set: HashSet<_> = pair().into_iter().collect();    assert_eq!(set.len(), 1)} #[test]fn eq() {    let specs = pair();    assert_eq!(&specs[0], &specs[1]);}