use super::ReasoningPhase;
use std::time::Duration;
#[test]
fn finalize_returns_elapsed_only_after_reasoning_deltas() {
let mut phase = ReasoningPhase::default();
phase.begin_step( false);
assert!(phase.hidden_placeholder());
assert!(phase.finalize().is_none());
assert!(!phase.hidden_placeholder());
phase.begin_step( false);
phase.on_reasoning_delta( false);
assert!(phase.hidden_placeholder());
assert!(phase.has_started());
let elapsed = phase.finalize().expect("timed stretch");
assert!(elapsed >= Duration::ZERO);
assert!(!phase.hidden_placeholder());
assert!(!phase.has_started());
}