fix(api): wrap critical mutations in transactions and fix TOCTOU race conditions

- applyProjectScenario: wrap assignment loop in db.$transaction to prevent partial updates
- vacation approve/reject: fix TOCTOU race via updateMany with status-guard in WHERE + CONFLICT on count=0
- vacation cancel: wrap vacation.update + entitlement.updateMany in $transaction
- batchApprove: collect mutations, wrap in $transaction, dispatch SSE/notifications after commit
- Fix dead-code bug in createHappyPathDb where $transaction was assigned after return
- Add atomicity and concurrency tests

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
2026-04-09 08:34:59 +02:00
parent b103e79e92
commit 1d6d75ecf6
6 changed files with 245 additions and 129 deletions
@@ -152,6 +152,7 @@ function createVacationDb(overrides: Record<string, unknown> = {}) {
vacation: {
findFirst: vi.fn().mockResolvedValue(null),
findUnique: vi.fn().mockResolvedValue(sampleVacation),
findUniqueOrThrow: vi.fn().mockResolvedValue(sampleVacation),
findMany: vi.fn().mockResolvedValue([]),
create: vi.fn().mockResolvedValue(sampleVacation),
update: vi.fn().mockResolvedValue(sampleVacation),
@@ -331,10 +332,11 @@ describe("vacation router", () => {
...sampleVacation,
status: VacationStatus.PENDING,
}),
update: vi.fn().mockResolvedValue({
findUniqueOrThrow: vi.fn().mockResolvedValue({
...sampleVacation,
status: VacationStatus.APPROVED,
}),
updateMany: vi.fn().mockResolvedValue({ count: 1 }),
},
});
@@ -379,10 +381,11 @@ describe("vacation router", () => {
...sampleVacation,
status: VacationStatus.PENDING,
}),
update: vi.fn().mockResolvedValue({
findUniqueOrThrow: vi.fn().mockResolvedValue({
...sampleVacation,
status: VacationStatus.APPROVED,
}),
updateMany: vi.fn().mockResolvedValue({ count: 1 }),
},
});
@@ -896,7 +899,8 @@ describe("vacation router", () => {
const db = createVacationDb({
vacation: {
findUnique: vi.fn().mockResolvedValue(sampleVacation),
update: vi.fn().mockResolvedValue(updatedVacation),
findUniqueOrThrow: vi.fn().mockResolvedValue(updatedVacation),
updateMany: vi.fn().mockResolvedValue({ count: 1 }),
},
user: {
findUnique: vi.fn().mockResolvedValue({ id: "mgr_1" }),
@@ -910,9 +914,9 @@ describe("vacation router", () => {
const result = await caller.approve({ id: "vac_1" });
expect(result.status).toBe(VacationStatus.APPROVED);
expect(db.vacation.update).toHaveBeenCalledWith(
expect(db.vacation.updateMany).toHaveBeenCalledWith(
expect.objectContaining({
where: { id: "vac_1" },
where: expect.objectContaining({ id: "vac_1" }),
data: expect.objectContaining({
status: VacationStatus.APPROVED,
rejectionReason: null,
@@ -1016,7 +1020,8 @@ describe("vacation router", () => {
const db = createVacationDb({
vacation: {
findUnique: vi.fn().mockResolvedValue(sampleVacation),
update: vi.fn().mockResolvedValue(updatedVacation),
findUniqueOrThrow: vi.fn().mockResolvedValue(updatedVacation),
updateMany: vi.fn().mockResolvedValue({ count: 1 }),
},
resource: {
findUnique: vi.fn().mockResolvedValue(null),
@@ -1027,8 +1032,9 @@ describe("vacation router", () => {
const result = await caller.reject({ id: "vac_1", rejectionReason: "Team conflict" });
expect(result.status).toBe(VacationStatus.REJECTED);
expect(db.vacation.update).toHaveBeenCalledWith(
expect(db.vacation.updateMany).toHaveBeenCalledWith(
expect.objectContaining({
where: expect.objectContaining({ id: "vac_1" }),
data: expect.objectContaining({
status: VacationStatus.REJECTED,
rejectionReason: "Team conflict",
@@ -1458,8 +1464,8 @@ describe("vacation router", () => {
},
vacation: {
deleteMany: vi.fn().mockResolvedValue({ count: 0 }),
findFirst: vi.fn().mockResolvedValue(null),
create: vi.fn().mockResolvedValue({}),
findMany: vi.fn().mockResolvedValue([]),
createMany: vi.fn().mockResolvedValue({ count: 0 }),
},
};
@@ -1471,7 +1477,37 @@ describe("vacation router", () => {
expect(result.created).toBeGreaterThan(0);
expect(result.resources).toBe(2);
expect(db.vacation.create).toHaveBeenCalled();
expect(db.vacation.createMany).toHaveBeenCalled();
});
it("resolves holidays once per unique country/state combination", async () => {
// 3 resources: res_1 and res_2 share the same combo, res_3 is different
const db = {
resource: {
findMany: vi.fn().mockResolvedValue([
{ id: "res_1", federalState: "BY", countryId: "de", country: { code: "DE" }, metroCityId: null, metroCity: null },
{ id: "res_2", federalState: "BY", countryId: "de", country: { code: "DE" }, metroCityId: null, metroCity: null },
{ id: "res_3", federalState: "BE", countryId: "de", country: { code: "DE" }, metroCityId: null, metroCity: null },
]),
},
user: {
findUnique: vi.fn().mockResolvedValue({ id: "admin_1" }),
},
vacation: {
findMany: vi.fn().mockResolvedValue([]),
createMany: vi.fn().mockResolvedValue({ count: 0 }),
},
holidayCalendar: {
findMany: vi.fn().mockResolvedValue([]),
},
};
const caller = createAdminCaller(db);
const result = await caller.batchCreatePublicHolidays({ year: 2026 });
// 3 resources, 2 unique combos → holiday calendars queried twice, not 3 times
expect(db.holidayCalendar.findMany).toHaveBeenCalledTimes(2);
expect(result.resources).toBe(3);
});
it("skips already existing holidays", async () => {
@@ -1485,8 +1521,15 @@ describe("vacation router", () => {
findUnique: vi.fn().mockResolvedValue({ id: "admin_1" }),
},
vacation: {
findFirst: vi.fn().mockResolvedValue({ id: "existing" }),
create: vi.fn(),
// Return one entry per day of 2026 so every holiday date is "already existing"
findMany: vi.fn().mockResolvedValue(
Array.from({ length: 365 }, (_, i) => {
const d = new Date(Date.UTC(2026, 0, 1));
d.setUTCDate(d.getUTCDate() + i);
return { resourceId: "res_1", startDate: d };
}),
),
createMany: vi.fn(),
},
};
@@ -1497,7 +1540,7 @@ describe("vacation router", () => {
});
expect(result.created).toBe(0);
expect(db.vacation.create).not.toHaveBeenCalled();
expect(db.vacation.createMany).not.toHaveBeenCalled();
});
it("forbids non-admin users", async () => {