package casino

import "testing"

func TestSimplifiedCrapsAll36SettlementsAndHouseEdge(t *testing.T) {
	// Total returns for a one-credit wager, including the winning stake.
	returns := [13]int{2: 4, 3: 2, 4: 2, 10: 3, 11: 3, 12: 6}
	totalReturned, wins := 0, 0
	for a := 1; a <= 6; a++ {
		for b := 1; b <= 6; b++ {
			tb := variantFixture("simplified")
			tb.join("a")
			w := &testWallet{chips: 100}
			tb.bet("a", "pass", 1, w)
			want := returns[a+b]
			for _, row := range tb.projectionFor(tb.players.get("a")) {
				if row.Total == a+b && row.Net != want-1 {
					t.Fatalf("preview for %d+%d: got %d, want %d", a, b, row.Net, want-1)
				}
			}
			tb.resolveRoll(a, b)
			if w.paid != want || len(w.open) != 0 || tb.players.get("a").HasBet || tb.point != 0 {
				t.Fatalf("roll %d+%d: paid %d, want %d; open %v, point %d", a, b, w.paid, want, w.open, tb.point)
			}
			totalReturned += w.paid
			if w.paid > 0 {
				wins++
			}
		}
	}
	// 36 credits wagered, 35 returned: house edge exactly 1/36 = 2.777...%.
	if totalReturned != 35 || wins != 12 {
		t.Fatalf("all 36 rolls: returned %d, wins %d", totalReturned, wins)
	}
}