Anders Olsson
044fb83a38
Spec Section 4 "three-tier event ingestion" tier 2: one-off match convenience. Spec open question 3: expose Index + intern/lookup for power users. History and HistoryBuilder gain a 4th generic parameter K: Eq + Hash + Clone = &'static str. The default ensures existing tests using Index-based add_events compile unchanged. History internally owns a KeyTable<K>. intern(&Q) creates or returns an Index for the given key; lookup(&Q) returns Option<Index> without creating. record_winner and record_draw are thin 1v1 wrappers around the internal add_events_with_prior. Part of T2 of docs/superpowers/specs/2026-04-23-trueskill-engine-redesign-design.md. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
55 lines
1.3 KiB
Rust
55 lines
1.3 KiB
Rust
use trueskill_tt::{ConstantDrift, ConvergenceOptions, History};
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#[test]
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fn record_winner_builds_history() {
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let mut h = History::builder()
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.mu(25.0)
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.sigma(25.0 / 3.0)
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.beta(25.0 / 6.0)
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.drift(ConstantDrift(25.0 / 300.0))
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.convergence(ConvergenceOptions {
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max_iter: 30,
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epsilon: 1e-6,
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})
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.build();
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h.record_winner(&"alice", &"bob", 1).unwrap();
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h.converge().unwrap();
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let a_idx = h.lookup(&"alice").unwrap();
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let b_idx = h.lookup(&"bob").unwrap();
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assert_ne!(a_idx, b_idx);
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}
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#[test]
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fn intern_is_idempotent() {
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let mut h: History = History::builder().build();
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let a1 = h.intern(&"alice");
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let a2 = h.intern(&"alice");
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assert_eq!(a1, a2);
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}
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#[test]
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fn lookup_returns_none_for_missing() {
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let h: History = History::builder().build();
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assert!(h.lookup(&"nobody").is_none());
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}
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#[test]
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fn record_draw_with_p_draw_set() {
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let mut h = History::builder()
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.mu(25.0)
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.sigma(25.0 / 3.0)
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.beta(25.0 / 6.0)
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.drift(ConstantDrift(25.0 / 300.0))
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.p_draw(0.25)
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.build();
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h.record_draw(&"alice", &"bob", 1).unwrap();
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h.converge().unwrap();
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assert!(h.lookup(&"alice").is_some());
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assert!(h.lookup(&"bob").is_some());
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}
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