64 lines
1.3 KiB
JavaScript
64 lines
1.3 KiB
JavaScript
"use strict";
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const test = require("node:test");
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const assert = require("node:assert/strict");
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const { WalletStore } = require("../src/lib/wallet");
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test("applies credit and debit transactions", () => {
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const wallet = new WalletStore();
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wallet.applyTransaction({
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userId: "u1",
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type: "credit",
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amount: 5,
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reason: "topup",
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idempotencyKey: "evt-1",
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});
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wallet.applyTransaction({
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userId: "u1",
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type: "debit",
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amount: 2,
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reason: "article_generation",
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idempotencyKey: "evt-2",
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});
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assert.equal(wallet.getBalance("u1"), 3);
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});
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test("prevents overdraft debits", () => {
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const wallet = new WalletStore();
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assert.throws(() => {
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wallet.applyTransaction({
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userId: "u1",
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type: "debit",
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amount: 1,
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reason: "article_generation",
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idempotencyKey: "evt-3",
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});
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}, /insufficient_credits/);
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});
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test("is idempotent by idempotency key", () => {
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const wallet = new WalletStore();
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const first = wallet.applyTransaction({
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userId: "u1",
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type: "credit",
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amount: 4,
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reason: "topup",
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idempotencyKey: "evt-4",
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});
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const second = wallet.applyTransaction({
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userId: "u1",
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type: "credit",
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amount: 999,
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reason: "topup",
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idempotencyKey: "evt-4",
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});
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assert.equal(first.id, second.id);
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assert.equal(wallet.getBalance("u1"), 4);
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});
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