vendor/rustc-rayon-core/tests/double_init_fail.rs

   1 use rayon_core::ThreadPoolBuilder;
   2 use std::error::Error;
   3
   4 #[test]
   5 fn double_init_fail() {
   6     let result1 = ThreadPoolBuilder::new().build_global();
   7     assert_eq!(result1.unwrap(), ());
   8     let err = ThreadPoolBuilder::new().build_global().unwrap_err();
   9     assert!(err.description() == "The global thread pool has already been initialized.");
  10 }