363 lines
11 KiB
TypeScript
363 lines
11 KiB
TypeScript
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/**
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* Betting engine tests — escrow lifecycle, bet placement, settlement, and edge cases.
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*/
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import { describe, it, expect, beforeEach } from 'vitest'
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import {
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placeBet,
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lockBets,
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settleBets,
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clearEscrow,
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getFightBets,
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getPoolInfo,
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generateBetProof,
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type BetPlacement,
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type BetSettlement,
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} from './betting.js'
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import { calculateOdds } from './odds.js'
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// Wipe escrow between every test to prevent leakage
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beforeEach(() => {
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clearEscrow()
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})
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// -- helpers ----------------------------------------------------------------
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const VALID_TOKEN = 'cashuA_valid_token_abc123'
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const SHORT_TOKEN = 'short' // < 10 chars, fails verifyCashuToken
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async function placeDefaultBet(overrides: {
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fightId?: string
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pubkey?: string
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botId?: string
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amount?: number
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token?: string
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eloA?: number
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eloB?: number
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botAId?: string
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} = {}): Promise<BetPlacement> {
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return placeBet(
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overrides.fightId ?? 'fight-1',
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overrides.pubkey ?? 'pubkey-bettor-1',
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overrides.botId ?? 'botA',
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overrides.amount ?? 1000,
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overrides.token ?? VALID_TOKEN,
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overrides.eloA ?? 1200,
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overrides.eloB ?? 1200,
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overrides.botAId ?? 'botA',
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)
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}
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// -- placeBet ---------------------------------------------------------------
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describe('placeBet', () => {
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it('valid bet creates placement with correct odds', async () => {
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const bet = await placeDefaultBet()
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expect(bet.id).toBeTruthy()
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expect(bet.id.length).toBe(12)
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expect(bet.fightId).toBe('fight-1')
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expect(bet.bettorPubkey).toBe('pubkey-bettor-1')
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expect(bet.botId).toBe('botA')
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expect(bet.amountSats).toBe(1000)
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expect(bet.cashuToken).toBe(VALID_TOKEN)
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// With equal ELOs, odds should be close to even (~1.94 with 3% edge)
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const odds = calculateOdds(1200, 1200)
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expect(bet.oddsAtPlacement).toBe(odds.botAPayoutMultiplier)
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expect(bet.potentialPayout).toBe(Math.floor(1000 * odds.botAPayoutMultiplier))
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})
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it('betting on bot B uses bot B payout multiplier', async () => {
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const bet = await placeDefaultBet({
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botId: 'botB',
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eloA: 1500,
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eloB: 1200,
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botAId: 'botA',
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})
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const odds = calculateOdds(1500, 1200)
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expect(bet.oddsAtPlacement).toBe(odds.botBPayoutMultiplier)
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expect(bet.potentialPayout).toBe(Math.floor(1000 * odds.botBPayoutMultiplier))
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})
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it('rejects bet below minimum (100 sats)', async () => {
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await expect(placeDefaultBet({ amount: 50 }))
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.rejects.toThrow('Minimum bet is 100 sats')
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})
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it('rejects bet above maximum (100000 sats)', async () => {
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await expect(placeDefaultBet({ amount: 200_000 }))
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.rejects.toThrow('Maximum bet is 100000 sats')
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})
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it('rejects zero amount', async () => {
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await expect(placeDefaultBet({ amount: 0 }))
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.rejects.toThrow('positive integer')
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})
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it('rejects negative amount', async () => {
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await expect(placeDefaultBet({ amount: -100 }))
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.rejects.toThrow('positive integer')
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})
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it('rejects non-integer amount', async () => {
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await expect(placeDefaultBet({ amount: 100.5 }))
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.rejects.toThrow('positive integer')
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})
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it('rejects invalid Cashu token (too short)', async () => {
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await expect(placeDefaultBet({ token: SHORT_TOKEN }))
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.rejects.toThrow('Invalid or insufficient Cashu token')
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})
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it('rejects empty Cashu token', async () => {
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await expect(placeDefaultBet({ token: '' }))
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.rejects.toThrow('Invalid or insufficient Cashu token')
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})
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it('multiple bets accumulate in same escrow pool', async () => {
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await placeDefaultBet({ pubkey: 'user1', amount: 500 })
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await placeDefaultBet({ pubkey: 'user2', amount: 300 })
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await placeDefaultBet({ pubkey: 'user3', amount: 700 })
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const bets = getFightBets('fight-1')
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expect(bets).toHaveLength(3)
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const pool = getPoolInfo('fight-1')!
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expect(pool.totalPool).toBe(1500)
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expect(pool.betCount).toBe(3)
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})
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it('separate fights have isolated escrow pools', async () => {
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await placeDefaultBet({ fightId: 'fight-A', amount: 500 })
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await placeDefaultBet({ fightId: 'fight-B', amount: 300 })
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expect(getFightBets('fight-A')).toHaveLength(1)
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expect(getFightBets('fight-B')).toHaveLength(1)
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expect(getPoolInfo('fight-A')!.totalPool).toBe(500)
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expect(getPoolInfo('fight-B')!.totalPool).toBe(300)
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})
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})
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// -- lockBets ---------------------------------------------------------------
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describe('lockBets', () => {
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it('updates locked timestamp on existing pool', async () => {
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await placeDefaultBet()
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const beforeLock = new Date().toISOString()
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lockBets('fight-1')
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// Pool still exists and bets still accessible
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const bets = getFightBets('fight-1')
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expect(bets).toHaveLength(1)
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})
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it('no-op on nonexistent fight', () => {
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// Should not throw
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expect(() => lockBets('nonexistent-fight')).not.toThrow()
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})
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})
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// -- settleBets -------------------------------------------------------------
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describe('settleBets', () => {
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it('winners get payout tokens, losers get nothing', async () => {
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await placeDefaultBet({ pubkey: 'winner-pub', botId: 'botA', amount: 1000 })
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await placeDefaultBet({ pubkey: 'loser-pub', botId: 'botB', amount: 500 })
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const settlements = await settleBets('fight-1', 'botA')
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expect(settlements).toHaveLength(2)
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const winnerSettlement = settlements.find(s => s.won)!
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expect(winnerSettlement).toBeDefined()
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expect(winnerSettlement.payoutSats).toBeGreaterThan(0)
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expect(winnerSettlement.payoutToken).toBeTruthy()
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expect(winnerSettlement.payoutToken).toContain('cashuA_payout_')
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const loserSettlement = settlements.find(s => !s.won)!
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expect(loserSettlement).toBeDefined()
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expect(loserSettlement.payoutSats).toBe(0)
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expect(loserSettlement.payoutToken).toBeNull()
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})
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it('winner payout matches potential payout from placement', async () => {
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const bet = await placeDefaultBet({ botId: 'botA', amount: 1000 })
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const settlements = await settleBets('fight-1', 'botA')
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expect(settlements).toHaveLength(1)
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expect(settlements[0].won).toBe(true)
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expect(settlements[0].payoutSats).toBe(bet.potentialPayout)
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})
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it('draw refunds all bets at original amount', async () => {
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await placeDefaultBet({ pubkey: 'pub1', botId: 'botA', amount: 1000 })
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await placeDefaultBet({ pubkey: 'pub2', botId: 'botB', amount: 500 })
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const settlements = await settleBets('fight-1', null)
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expect(settlements).toHaveLength(2)
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// All should be refunded (won=false but payoutSats = original amount)
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for (const s of settlements) {
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expect(s.won).toBe(false)
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expect(s.payoutSats).toBeGreaterThan(0)
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expect(s.payoutToken).toBeTruthy()
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}
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const refund1 = settlements.find(s => s.payoutSats === 1000)!
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const refund2 = settlements.find(s => s.payoutSats === 500)!
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expect(refund1).toBeDefined()
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expect(refund2).toBeDefined()
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})
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it('empty pool returns empty array', async () => {
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const settlements = await settleBets('nonexistent-fight', 'botA')
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expect(settlements).toEqual([])
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})
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it('pool with zero bets returns empty array', async () => {
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// No bets placed on this fight
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const settlements = await settleBets('empty-fight', 'botA')
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expect(settlements).toEqual([])
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})
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it('clears escrow after successful settlement', async () => {
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await placeDefaultBet()
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await settleBets('fight-1', 'botA')
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expect(getFightBets('fight-1')).toEqual([])
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expect(getPoolInfo('fight-1')).toBeNull()
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})
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it('double settlement returns empty (escrow already cleared)', async () => {
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await placeDefaultBet()
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const first = await settleBets('fight-1', 'botA')
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const second = await settleBets('fight-1', 'botA')
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expect(first).toHaveLength(1)
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expect(second).toEqual([])
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})
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})
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// -- clearEscrow ------------------------------------------------------------
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describe('clearEscrow', () => {
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it('clears all pools and returns count', async () => {
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await placeDefaultBet({ fightId: 'fight-A' })
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await placeDefaultBet({ fightId: 'fight-B' })
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await placeDefaultBet({ fightId: 'fight-C' })
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const count = clearEscrow()
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expect(count).toBe(3)
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expect(getPoolInfo('fight-A')).toBeNull()
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expect(getPoolInfo('fight-B')).toBeNull()
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expect(getPoolInfo('fight-C')).toBeNull()
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})
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it('returns 0 when no escrow pools exist', () => {
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const count = clearEscrow()
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expect(count).toBe(0)
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})
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})
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// -- getFightBets -----------------------------------------------------------
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describe('getFightBets', () => {
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it('returns correct bets for a specific fight', async () => {
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await placeDefaultBet({ fightId: 'fight-1', pubkey: 'pub1' })
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await placeDefaultBet({ fightId: 'fight-1', pubkey: 'pub2' })
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await placeDefaultBet({ fightId: 'fight-2', pubkey: 'pub3' })
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const fight1Bets = getFightBets('fight-1')
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expect(fight1Bets).toHaveLength(2)
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expect(fight1Bets.every(b => b.fightId === 'fight-1')).toBe(true)
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const fight2Bets = getFightBets('fight-2')
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expect(fight2Bets).toHaveLength(1)
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expect(fight2Bets[0].bettorPubkey).toBe('pub3')
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})
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it('returns empty array for unknown fight', () => {
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const bets = getFightBets('nonexistent')
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expect(bets).toEqual([])
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})
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})
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// -- getPoolInfo ------------------------------------------------------------
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describe('getPoolInfo', () => {
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it('returns pool aggregation for active fight', async () => {
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await placeDefaultBet({ pubkey: 'p1', amount: 1000 })
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await placeDefaultBet({ pubkey: 'p2', amount: 500 })
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const info = getPoolInfo('fight-1')
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expect(info).not.toBeNull()
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expect(info!.totalPool).toBe(1500)
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expect(info!.betCount).toBe(2)
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})
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it('returns null for unknown fight', () => {
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expect(getPoolInfo('unknown')).toBeNull()
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})
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})
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// -- generateBetProof -------------------------------------------------------
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describe('generateBetProof', () => {
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it('generates correct proof for a winning bet', async () => {
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const bet = await placeDefaultBet({ botId: 'botA', amount: 1000 })
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const settlement: BetSettlement = {
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betId: bet.id,
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won: true,
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payoutSats: bet.potentialPayout,
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payoutToken: 'cashuA_payout_test',
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}
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const proof = generateBetProof(bet, settlement, 'botA')
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expect(proof.betId).toBe(bet.id)
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expect(proof.fightId).toBe('fight-1')
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expect(proof.winnerId).toBe('botA')
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expect(proof.betOnBotId).toBe('botA')
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expect(proof.amountSats).toBe(1000)
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expect(proof.oddsAtPlacement).toBe(bet.oddsAtPlacement)
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expect(proof.won).toBe(true)
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expect(proof.payoutSats).toBe(bet.potentialPayout)
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expect(proof.timestamp).toBeTruthy()
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})
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it('generates correct proof for a losing bet', async () => {
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const bet = await placeDefaultBet({ botId: 'botB', amount: 500 })
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const settlement: BetSettlement = {
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betId: bet.id,
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won: false,
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payoutSats: 0,
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payoutToken: null,
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}
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const proof = generateBetProof(bet, settlement, 'botA')
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expect(proof.won).toBe(false)
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expect(proof.payoutSats).toBe(0)
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expect(proof.winnerId).toBe('botA')
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expect(proof.betOnBotId).toBe('botB')
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})
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it('generates correct proof for a draw', async () => {
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const bet = await placeDefaultBet({ amount: 1000 })
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const settlement: BetSettlement = {
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betId: bet.id,
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won: false,
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payoutSats: 1000,
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payoutToken: 'cashuA_refund_test',
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}
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const proof = generateBetProof(bet, settlement, null)
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expect(proof.winnerId).toBeNull()
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expect(proof.won).toBe(false)
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expect(proof.payoutSats).toBe(1000)
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})
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})
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