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|
package casino
import (
"math/rand"
"strings"
"testing"
)
func TestBlackjackHandTreatsAceAsElevenWhenPossible(t *testing.T) {
hand := &blackjackHand{cards: []card{{rank: "A"}, {rank: "6"}}}
total, soft := hand.total()
if total != 17 || !soft {
t.Fatalf("total=%d soft=%v, want soft 17", total, soft)
}
hand.cards = append(hand.cards, card{rank: "K"})
total, soft = hand.total()
if total != 17 || soft {
t.Fatalf("total=%d soft=%v, want hard 17", total, soft)
}
}
func TestBlackjackHandScoreShowsBlackjackAs21(t *testing.T) {
if got := handScore(&blackjackHand{cards: []card{{rank: "A"}, {rank: "K"}}}); got != "21" {
t.Fatalf("blackjack score=%q, want 21", got)
}
if got := handScore(&blackjackHand{cards: []card{{rank: "A"}, {rank: "6"}}}); got != "7 or 17" {
t.Fatalf("soft 17 score=%q, want 7 or 17", got)
}
if got := handScore(&blackjackHand{cards: []card{{rank: "10"}, {rank: "8"}}}); got != "18" {
t.Fatalf("hard 18 score=%q, want 18", got)
}
}
func TestBlackjackSettlementRules(t *testing.T) {
rules := (BlackjackConfig{}).Normalize()
natural := &blackjackHand{bet: 10, cards: []card{{rank: "A"}, {rank: "K"}}}
if result, payout := settleHand(natural, 20, false, rules); result != "blackjack" || payout != 25 {
t.Fatalf("natural result=%s payout=%d", result, payout)
}
dealerNatural := &blackjackHand{bet: 10, cards: []card{{rank: "A"}, {rank: "Q"}}}
if result, payout := settleHand(dealerNatural, 21, true, rules); result != "push" || payout != 10 {
t.Fatalf("dealer natural result=%s payout=%d", result, payout)
}
if result, payout := settleHand(&blackjackHand{bet: 10, cards: []card{{rank: "10"}, {rank: "8"}}}, 21, true, rules); result != "dealer blackjack" || payout != 0 {
t.Fatalf("dealer blackjack result=%s payout=%d", result, payout)
}
if result, payout := settleHand(&blackjackHand{bet: 10, cards: []card{{rank: "10"}, {rank: "8"}}}, 22, false, rules); result != "win" || payout != 20 {
t.Fatalf("dealer bust result=%s payout=%d", result, payout)
}
}
func TestBlackjackTableStartsAfterAllPlayersBet(t *testing.T) {
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack, MaxPlayers: 2}, newTestRand())
table.join("alice")
table.join("bob")
wa, wb := &testWallet{credits: 100}, &testWallet{credits: 100}
if events := table.bet("alice", "", 10, wa); hasMessage(events, "round begins") {
t.Fatal("round started before all players bet")
}
events := table.bet("bob", "", 10, wb)
if !hasSnapshot(events) {
t.Fatalf("round did not start after all players bet: %+v", events)
}
}
func TestSoloBlackjackTurnDoesNotTimeout(t *testing.T) {
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack, Blackjack: BlackjackConfig{ActionTicks: 1}}, newTestRand())
table.participants["alice"] = &blackjackPlayer{
Participant: Participant{Name: "alice", HasBet: true, Connected: true},
hands: []*blackjackHand{{bet: 10, cards: []card{{rank: "10"}, {rank: "6"}}}},
}
table.order = []string{"alice"}
table.phase = blackjackPlaying
if events := table.tick(); len(events) != 0 {
t.Fatalf("solo action timed out: %+v", events)
}
if table.phase != blackjackPlaying {
t.Fatalf("solo table phase changed to %s", table.phase)
}
}
func TestBlackjackRebetKeepsLastWager(t *testing.T) {
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack, MinBet: 5, MaxBet: 100}, newTestRand())
table.participants["alice"] = &blackjackPlayer{Participant: Participant{Name: "alice"}, lastBet: 25}
if spot, got := table.rebet("alice"); got != 25 || spot != "" {
t.Fatalf("rebet=(%q, %d), want (\"\", 25)", spot, got)
}
}
func TestBlackjackPromptNamesActiveHandAndOnlyOffersAvailableActions(t *testing.T) {
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack}, newTestRand())
table.participants["alice"] = &blackjackPlayer{Participant: Participant{Name: "alice", HasBet: true, Connected: true}, hands: []*blackjackHand{{bet: 10, cards: []card{{rank: "K"}, {rank: "6"}}}}}
table.order = []string{"alice"}
table.activePlayer = 0
table.activeHand = 0
table.dealer.cards = []card{{rank: "10"}, {rank: "7"}}
event := table.prompt()[0]
if event.Message != "Your turn (K,6).\nActions: hit, stand, double" {
t.Fatalf("prompt=%q", event.Message)
}
if event.Menu == nil || event.Menu.Kind != MenuBlackjackTurn || event.Menu.Title != "Your turn (K,6)" ||
len(event.Menu.Actions) != 3 || event.Menu.Actions[0] != "hit" || event.Menu.Actions[1] != "stand" || event.Menu.Actions[2] != "double" {
t.Fatalf("prompt menu=%+v", event.Menu)
}
}
func TestBlackjackMenuEventCarriesStructuredMenu(t *testing.T) {
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack}, newTestRand())
event := table.menuEvent("alice")
if event.Menu == nil || event.Menu.Kind != MenuBlackjackBet {
t.Fatalf("menu event=%+v", event.Menu)
}
if len(event.Menu.Commands) != 3 || event.Menu.Commands[0].Command != "bet" || event.Menu.Commands[2].Command != "stop" {
t.Fatalf("bet menu commands=%+v", event.Menu.Commands)
}
}
func TestBlackjackActionCommandsDescribeEachAction(t *testing.T) {
commands := blackjackActionCommands([]string{"hit", "stand", "double", "split", "surrender"})
if len(commands) != 5 {
t.Fatalf("commands=%+v", commands)
}
for _, c := range commands {
if c.Desc == "" {
t.Fatalf("action %q missing a description", c.Command)
}
}
}
func TestBlackjackInsurancePaysOnDealerBlackjack(t *testing.T) {
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack}, newTestRand())
w := &testWallet{credits: 100}
table.participants["alice"] = &blackjackPlayer{
Participant: Participant{Name: "alice", HasBet: true, Connected: true, Wallet: w, Wager: Wager{Total: 10}},
hands: []*blackjackHand{{bet: 10, cards: []card{{rank: "10"}, {rank: "8"}}}},
}
table.order = []string{"alice"}
table.dealer.cards = []card{{rank: "K"}, {rank: "A"}}
table.phase = blackjackInsurance
events := table.action("alice", "insurance")
if w.credits != 95 {
t.Fatalf("insurance stake credits=%d, want 95", w.credits)
}
if w.paid != 15 {
t.Fatalf("insurance payout=%d, want 15 (stake + 2x)", w.paid)
}
if !hasMessage(events, "Insurance pays 15 credits.") {
t.Fatalf("missing insurance payout message: %+v", events)
}
if table.phase != blackjackWaiting {
t.Fatalf("phase=%s, want waiting after dealer blackjack settles", table.phase)
}
}
func TestBlackjackInsuranceDeclineContinuesRound(t *testing.T) {
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack}, newTestRand())
w := &testWallet{credits: 100}
table.participants["alice"] = &blackjackPlayer{
Participant: Participant{Name: "alice", HasBet: true, Connected: true, Wallet: w, Wager: Wager{Total: 10}},
hands: []*blackjackHand{{bet: 10, cards: []card{{rank: "10"}, {rank: "8"}}}},
}
table.order = []string{"alice"}
table.dealer.cards = []card{{rank: "9"}, {rank: "A"}}
table.phase = blackjackInsurance
events := table.action("alice", "stand")
if !hasMessage(events, "You decline insurance.") {
t.Fatalf("missing decline message: %+v", events)
}
if table.phase != blackjackPlaying {
t.Fatalf("phase=%s, want playing after insurance declined", table.phase)
}
if !hasMessage(events, "Your turn (10,8).") {
t.Fatalf("round did not continue after insurance: %+v", events)
}
}
func TestBlackjackDoubleSetsBust(t *testing.T) {
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack}, newTestRand())
// decks 0 disables the shuffle threshold so the forced card is drawn.
table.shoe = &shoe{cards: []card{{rank: "K"}}}
w := &testWallet{credits: 100}
table.participants["alice"] = &blackjackPlayer{
Participant: Participant{Name: "alice", HasBet: true, Connected: true, Wallet: w, Wager: Wager{Total: 10}},
hands: []*blackjackHand{{bet: 10, cards: []card{{rank: "10"}, {rank: "6"}}}},
}
table.order = []string{"alice"}
table.dealer.cards = []card{{rank: "10"}, {rank: "7"}}
table.phase = blackjackPlaying
hand := table.participants["alice"].hands[0]
events := table.action("alice", "double")
if !hand.bust {
t.Fatal("doubling into 26 did not set the bust flag")
}
if !hasMessage(events, "loses") {
t.Fatalf("busted double did not settle as a loss: %+v", events)
}
}
func TestBlackjackSplitAcesOnlyAllowResplit(t *testing.T) {
resplit := true
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack, Blackjack: BlackjackConfig{ResplitAces: &resplit}}, newTestRand())
w := &testWallet{credits: 100}
table.participants["alice"] = &blackjackPlayer{
Participant: Participant{Name: "alice", HasBet: true, Connected: true, Wallet: w, Wager: Wager{Total: 10}},
hands: []*blackjackHand{{bet: 10, fromSplit: true, cards: []card{{rank: "A"}, {rank: "A"}}}},
}
table.order = []string{"alice"}
table.dealer.cards = []card{{rank: "10"}, {rank: "7"}}
table.phase = blackjackPlaying
p := table.participants["alice"]
actions := table.availableActions(p, p.hands[0])
if len(actions) != 2 || actions[0] != "stand" || actions[1] != "split" {
t.Fatalf("split ace actions=%v, want [stand split]", actions)
}
if events := table.action("alice", "hit"); !hasMessage(events, "Split aces cannot be hit.") {
t.Fatalf("hit on split aces not rejected: %+v", events)
}
}
func TestBlackjackBettingIgnoresDisconnected(t *testing.T) {
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack, MaxPlayers: 2}, newTestRand())
table.join("alice")
table.join("bob")
table.markDisconnected("bob")
w := &testWallet{credits: 100}
events := table.bet("alice", "", 10, w)
if !hasSnapshot(events) {
t.Fatalf("disconnected player stalled the round: %+v", events)
}
}
func TestBlackjackReconnectShowsTableSnapshot(t *testing.T) {
table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack}, newTestRand())
table.participants["alice"] = &blackjackPlayer{
Participant: Participant{Name: "alice", HasBet: true, Connected: true},
hands: []*blackjackHand{{bet: 10, cards: []card{{rank: "10"}, {rank: "8"}}}},
}
table.order = []string{"alice"}
table.dealer.cards = []card{{rank: "10"}, {rank: "7"}}
table.phase = blackjackPlaying
events := table.join("alice")
if len(events) != 1 || events[0].Blackjack == nil {
t.Fatalf("reconnect during play lacked a table snapshot: %+v", events)
}
}
func hasMessage(events []Event, fragment string) bool {
for _, event := range events {
if contains(event.Message, fragment) || contains(event.PrivateMessage, fragment) {
return true
}
}
return false
}
func hasSnapshot(events []Event) bool {
for _, event := range events {
if event.Blackjack != nil {
return true
}
}
return false
}
func contains(value, fragment string) bool {
return strings.Contains(value, fragment)
}
func newTestRand() *rand.Rand { return rand.New(rand.NewSource(7)) }
|
