glicko2_test.gno

 1package glicko2
 2
 3import (
 4	"testing"
 5)
 6
 7func TestExampleCalculations(t *testing.T) {
 8	// These are from the example in prof. Glickman's paper.
 9	// At the end, t.Log should print for the first player updated values
10	// for Rating, RatingDeviation and RatingVolatility matching those in the
11	// examples.
12	ratings := []*PlayerRating{
13		{ID: "1", Rating: 1500, RatingDeviation: 200, RatingVolatility: 0.06},
14		{ID: "2", Rating: 1400, RatingDeviation: 30, RatingVolatility: 0.06},
15		{ID: "3", Rating: 1550, RatingDeviation: 100, RatingVolatility: 0.06},
16		{ID: "4", Rating: 1700, RatingDeviation: 300, RatingVolatility: 0.06},
17	}
18	scores := []RatingScore{
19		{White: "1", Black: "2", Score: 1},
20		{White: "1", Black: "3", Score: 0},
21		{White: "1", Black: "4", Score: 0},
22	}
23	UpdateRatings(ratings, scores)
24	r := ratings[0]
25	t.Logf("%.4f (± %.4f, volatility: %.4f); working values: %.2f / %.2f / %.2f\n",
26		r.Rating, r.RatingDeviation, r.RatingVolatility,
27		r.wr, r.wrd, r.wrv,
28	)
29}