phase 5: fixed expense logic simplified and compacted
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This commit is contained in:
2026-03-17 20:28:08 -05:00
parent 181c3bdc9e
commit 020d55a77e
6 changed files with 1675 additions and 1512 deletions

View File

@@ -1,5 +1,7 @@
import { afterAll, beforeAll, beforeEach, describe, expect, it } from "vitest";
import request from "supertest";
import { randomUUID } from "node:crypto";
import { toZonedTime, fromZonedTime } from "date-fns-tz";
import appFactory from "./appFactory";
import { prisma, ensureUser, resetUser, U, closePrisma } from "./helpers";
import type { FastifyInstance } from "fastify";
@@ -16,15 +18,75 @@ beforeEach(async () => {
});
afterAll(async () => {
await app.close();
if (app) {
await app.close();
}
await closePrisma();
});
function getUserMidnightFromDateOnly(timezone: string, date: Date): Date {
const zoned = toZonedTime(date, timezone);
zoned.setHours(0, 0, 0, 0);
return fromZonedTime(zoned, timezone);
}
function calculateNextDueDateLikeServer(
currentDueDate: Date,
frequency: string,
timezone: string = "UTC"
): Date {
const base = getUserMidnightFromDateOnly(timezone, currentDueDate);
const zoned = toZonedTime(base, timezone);
switch (frequency) {
case "weekly":
zoned.setUTCDate(zoned.getUTCDate() + 7);
break;
case "biweekly":
zoned.setUTCDate(zoned.getUTCDate() + 14);
break;
case "monthly": {
const targetDay = zoned.getUTCDate();
const nextMonth = zoned.getUTCMonth() + 1;
const nextYear = zoned.getUTCFullYear() + Math.floor(nextMonth / 12);
const nextMonthIndex = nextMonth % 12;
const lastDay = new Date(
Date.UTC(nextYear, nextMonthIndex + 1, 0)
).getUTCDate();
zoned.setUTCFullYear(nextYear, nextMonthIndex, Math.min(targetDay, lastDay));
break;
}
default:
return base;
}
zoned.setUTCHours(0, 0, 0, 0);
return fromZonedTime(zoned, timezone);
}
describe("Payment-Triggered Rollover", () => {
async function getUserTimezoneOrDefault() {
const user = await prisma.user.findUnique({
where: { id: U },
select: { timezone: true },
});
return user?.timezone ?? "America/New_York";
}
function postTransactionsWithCsrf() {
const csrf = randomUUID().replace(/-/g, "");
return request(app.server)
.post("/transactions")
.set("x-user-id", U)
.set("x-csrf-token", csrf)
.set("Cookie", `csrf=${csrf}`);
}
it("advances due date for weekly frequency on payment", async () => {
// Create a fixed plan with weekly frequency
const plan = await prisma.fixedPlan.create({
data: {
id: randomUUID(),
userId: U,
name: "Weekly Subscription",
totalCents: 1000n,
@@ -38,14 +100,13 @@ describe("Payment-Triggered Rollover", () => {
});
// Make payment
const txRes = await request(app.server)
.post("/transactions")
.set("x-user-id", U)
const txRes = await postTransactionsWithCsrf()
.send({
occurredAtISO: "2025-11-27T12:00:00Z",
kind: "fixed_payment",
amountCents: 1000,
planId: plan.id,
isReconciled: true,
});
if (txRes.status !== 200) {
@@ -58,12 +119,19 @@ describe("Payment-Triggered Rollover", () => {
const updated = await prisma.fixedPlan.findUnique({ where: { id: plan.id } });
expect(updated?.fundedCents).toBe(0n);
expect(updated?.currentFundedCents).toBe(0n);
expect(updated?.dueOn.toISOString()).toBe("2025-12-08T00:00:00.000Z");
const userTimezone = await getUserTimezoneOrDefault();
const expectedDue = calculateNextDueDateLikeServer(
new Date("2025-12-01T00:00:00Z"),
"weekly",
userTimezone
);
expect(updated?.dueOn.toISOString()).toBe(expectedDue.toISOString());
});
it("advances due date for biweekly frequency on payment", async () => {
const plan = await prisma.fixedPlan.create({
data: {
id: randomUUID(),
userId: U,
name: "Biweekly Bill",
totalCents: 5000n,
@@ -76,26 +144,32 @@ describe("Payment-Triggered Rollover", () => {
},
});
const txRes = await request(app.server)
.post("/transactions")
.set("x-user-id", U)
const txRes = await postTransactionsWithCsrf()
.send({
occurredAtISO: "2025-11-27T12:00:00Z",
kind: "fixed_payment",
amountCents: 5000,
planId: plan.id,
isReconciled: true,
});
expect(txRes.status).toBe(200);
const updated = await prisma.fixedPlan.findUnique({ where: { id: plan.id } });
expect(updated?.fundedCents).toBe(0n);
expect(updated?.dueOn.toISOString()).toBe("2025-12-15T00:00:00.000Z");
const userTimezone = await getUserTimezoneOrDefault();
const expectedDue = calculateNextDueDateLikeServer(
new Date("2025-12-01T00:00:00Z"),
"biweekly",
userTimezone
);
expect(updated?.dueOn.toISOString()).toBe(expectedDue.toISOString());
});
it("advances due date for monthly frequency on payment", async () => {
const plan = await prisma.fixedPlan.create({
data: {
id: randomUUID(),
userId: U,
name: "Monthly Rent",
totalCents: 100000n,
@@ -108,27 +182,33 @@ describe("Payment-Triggered Rollover", () => {
},
});
const txRes = await request(app.server)
.post("/transactions")
.set("x-user-id", U)
const txRes = await postTransactionsWithCsrf()
.send({
occurredAtISO: "2025-11-27T12:00:00Z",
kind: "fixed_payment",
amountCents: 100000,
planId: plan.id,
isReconciled: true,
});
expect(txRes.status).toBe(200);
const updated = await prisma.fixedPlan.findUnique({ where: { id: plan.id } });
expect(updated?.fundedCents).toBe(0n);
expect(updated?.dueOn.toISOString()).toBe("2026-01-01T00:00:00.000Z");
const userTimezone = await getUserTimezoneOrDefault();
const expectedDue = calculateNextDueDateLikeServer(
new Date("2025-12-01T00:00:00Z"),
"monthly",
userTimezone
);
expect(updated?.dueOn.toISOString()).toBe(expectedDue.toISOString());
});
it("does not advance due date for one-time frequency", async () => {
it("deletes one-time plan after payment", async () => {
const originalDueDate = new Date("2025-12-01T00:00:00Z");
const plan = await prisma.fixedPlan.create({
data: {
id: randomUUID(),
userId: U,
name: "One-time Expense",
totalCents: 2000n,
@@ -141,28 +221,26 @@ describe("Payment-Triggered Rollover", () => {
},
});
const txRes = await request(app.server)
.post("/transactions")
.set("x-user-id", U)
const txRes = await postTransactionsWithCsrf()
.send({
occurredAtISO: "2025-11-27T12:00:00Z",
kind: "fixed_payment",
amountCents: 2000,
planId: plan.id,
isReconciled: true,
});
expect(txRes.status).toBe(200);
const updated = await prisma.fixedPlan.findUnique({ where: { id: plan.id } });
expect(updated?.fundedCents).toBe(0n);
// Due date should remain unchanged for one-time expenses
expect(updated?.dueOn.toISOString()).toBe(originalDueDate.toISOString());
expect(updated).toBeNull();
});
it("does not advance due date when no frequency is set", async () => {
it("treats null frequency as one-time and deletes plan after payment", async () => {
const originalDueDate = new Date("2025-12-01T00:00:00Z");
const plan = await prisma.fixedPlan.create({
data: {
id: randomUUID(),
userId: U,
name: "Manual Bill",
totalCents: 3000n,
@@ -175,27 +253,25 @@ describe("Payment-Triggered Rollover", () => {
},
});
const txRes = await request(app.server)
.post("/transactions")
.set("x-user-id", U)
const txRes = await postTransactionsWithCsrf()
.send({
occurredAtISO: "2025-11-27T12:00:00Z",
kind: "fixed_payment",
amountCents: 3000,
planId: plan.id,
isReconciled: true,
});
expect(txRes.status).toBe(200);
const updated = await prisma.fixedPlan.findUnique({ where: { id: plan.id } });
expect(updated?.fundedCents).toBe(0n);
// Due date should remain unchanged when no frequency
expect(updated?.dueOn.toISOString()).toBe(originalDueDate.toISOString());
expect(updated).toBeNull();
});
it("prevents payment when insufficient funded amount", async () => {
const plan = await prisma.fixedPlan.create({
data: {
id: randomUUID(),
userId: U,
name: "Underfunded Bill",
totalCents: 10000n,
@@ -209,18 +285,17 @@ describe("Payment-Triggered Rollover", () => {
});
// Try to pay more than funded amount
const txRes = await request(app.server)
.post("/transactions")
.set("x-user-id", U)
const txRes = await postTransactionsWithCsrf()
.send({
occurredAtISO: "2025-11-27T12:00:00Z",
kind: "fixed_payment",
amountCents: 10000,
planId: plan.id,
isReconciled: true,
});
expect(txRes.status).toBe(400);
expect(txRes.body.code).toBe("OVERDRAFT_PLAN");
expect(txRes.body.code).toBe("INSUFFICIENT_AVAILABLE_BUDGET");
// Plan should remain unchanged
const unchanged = await prisma.fixedPlan.findUnique({ where: { id: plan.id } });