in src/api/sync.rs [1307:1317]
fn headers_custom() {
let api = ApiBuilder::new()
.with_user_agent("origin", "custom")
.build()
.unwrap();
let headers = api.client.headers;
assert_eq!(
headers.get(USER_AGENT),
Some(&"unknown/None; hf-hub/0.4.3; rust/unknown; origin/custom".to_string())
);
}