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invention purchase, at least, how I think they should work

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This commit is contained in:
Devin Zuczek
2026-08-05 14:58:55 -04:00
parent b82a5e1dc0
commit a986d012f5
7 changed files with 379 additions and 51 deletions
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apps/econ/src/test/integration/api.test.ts
+47 -7
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@@ -111,7 +111,7 @@ function invention(
const SEEDED_INVENTIONS = [
invention(8), // free, published, someone else's — the sellable one
invention(9, { Price: 250 }), // priced: not sellable while only free is supported
invention(9, { Price: 250 }), // priced: buying it pays creator 999 250 tokens
invention(10, { IsPublished: false }), // a draft, not on sale even at 0
invention(11, { CreatorPlayerId: 60 }), // account 60's own invention
]
@@ -1039,12 +1039,52 @@ describe('econ endpoints', () => {
expect(await getOwnedInventionIds(env.DB, 50)).toEqual([8])
})
test('GET /api/storefronts/v2/buyInvention refuses anything but a free invention', async () => {
// Invention 9 costs 250. Sending the price the client rendered is a 402 (nothing
// here can settle a paid purchase yet); sending 0 for it is a stale/tampered price.
expect((await buyInvention('51', 9, 250)).status).toBe(402)
expect((await buyInvention('51', 9, 0)).status).toBe(409)
expect(await getOwnedInventionIds(env.DB, 51)).toEqual([])
test('GET /api/storefronts/v2/buyInvention pays the creator the buyer’s tokens', async () => {
// Invention 9 costs 250 and was made by account 999. Buying it moves 250 tokens from
// the buyer to that creator — no house cut, so the two sides are equal and opposite.
const res = await buyInvention('51', 9, 250)
expect(res.status).toBe(200)
const body = (await res.json()) as { BalanceUpdateResponse: { Balance: number } }
// `Balance` is the buyer's RESULTING total, so it already has the debit in it.
expect(body.BalanceUpdateResponse.Balance).toBe(DEFAULT_STARTING_TOKENS - 250)
expect(
await getBalance(env.DB, 51, CurrencyType.RecCenterTokens, DEFAULT_STARTING_TOKENS)
).toBe(DEFAULT_STARTING_TOKENS - 250)
// The creator had never touched their balance: they keep their starting grant AND get
// paid, rather than the payout standing in for the grant.
expect(
await getBalance(env.DB, 999, CurrencyType.RecCenterTokens, DEFAULT_STARTING_TOKENS)
).toBe(DEFAULT_STARTING_TOKENS + 250)
expect(await getOwnedInventionIds(env.DB, 51)).toEqual([9])
})
test('GET /api/storefronts/v2/buyInvention rejects a stale price and an unaffordable one', async () => {
// Sending 0 for the 250-token invention 9 is a stale (or tampered) price.
expect((await buyInvention('53', 9, 0)).status).toBe(409)
// Account 54 can't afford it: nothing is debited, nobody is paid, nothing is owned.
await spendCurrency(
env.DB,
54,
CurrencyType.RecCenterTokens,
DEFAULT_STARTING_TOKENS,
DEFAULT_STARTING_TOKENS
)
const creatorBefore = await getBalance(
env.DB,
999,
CurrencyType.RecCenterTokens,
DEFAULT_STARTING_TOKENS
)
expect((await buyInvention('54', 9, 250)).status).toBe(400)
expect(
await getBalance(env.DB, 54, CurrencyType.RecCenterTokens, DEFAULT_STARTING_TOKENS)
).toBe(0)
expect(
await getBalance(env.DB, 999, CurrencyType.RecCenterTokens, DEFAULT_STARTING_TOKENS)
).toBe(creatorBefore)
expect(await getOwnedInventionIds(env.DB, 53)).toEqual([])
expect(await getOwnedInventionIds(env.DB, 54)).toEqual([])
})
test('GET /api/storefronts/v2/buyInvention rejects drafts, self-buys and unknown ids', async () => {