Function normalize_features_arg 

pub fn normalize_features_arg(input: &str) -> String

Normalises a --features argument to the label format used by the matrix.

Accepts both the comma-separated cargo format ("tracing,test") and the human-readable label format ("test + tracing"), sorts the parts alphabetically, and joins them with " + ". An empty input returns "default".

Examples

use xtask_lib::tasks::util::matrix::normalize_features_arg;

assert_eq!(normalize_features_arg("tracing,test"), "test + tracing");
assert_eq!(normalize_features_arg("test + tracing"), "test + tracing");
assert_eq!(normalize_features_arg("test,tracing"), "test + tracing");
assert_eq!(normalize_features_arg(""), "default");
assert_eq!(normalize_features_arg("  "), "default");
assert_eq!(normalize_features_arg(",,"), "default");
assert_eq!(normalize_features_arg("+"), "default");
assert_eq!(normalize_features_arg("tracing"), "tracing");