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SRCmail/stores/__tests__/auth-store-switch-guard.test.ts
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TypeScript

import { describe, it, expect } from 'vitest';
import { connectedAccountCandidates, classifySessionMatch } from '../auth-store';
import type { Identity } from '@/lib/jmap/types';
// The account-switch guard force-re-auths only when the connected session
// matches NONE of its server-confirmed identifiers. accountId is generated
// from the primary-identity email (OAuth) OR the login username (basic), so
// the candidate set must cover both: the JMAP Session.username (authenticated
// login) and the primary sending-identity email.
const SERVER = 'https://mail.example.com';
const fakeClient = (opts: {
sessionUsername?: string;
constructorUsername?: string;
identities?: Identity[] | Error;
}) =>
({
getSessionUsername: () => opts.sessionUsername,
getUsername: () => opts.constructorUsername ?? '',
getIdentities: async () => {
if (opts.identities instanceof Error) throw opts.identities;
return opts.identities ?? [];
},
}) as never;
const id = (over: Partial<Identity> = {}): Identity => ({
id: 'id-1', name: 'Real User', email: 'real@example.com', mayDelete: true, ...over,
});
describe('connectedAccountCandidates (account-switch guard)', () => {
it('includes the primary-identity email (OAuth registers by email)', async () => {
const out = await connectedAccountCandidates(
fakeClient({ sessionUsername: 'preferred_user', identities: [id()] }), SERVER,
);
expect(out).toContain('real@example.com@mail.example.com');
});
it('includes the session login username (basic auth registers by login)', async () => {
// support@ case: login is the email, but the primary sending identity is a
// different address. The login must still be accepted.
const out = await connectedAccountCandidates(
fakeClient({ sessionUsername: 'support@linux-hosting.co.il', identities: [id({ email: 'alias@elsewhere.com' })] }),
SERVER,
);
expect(out).toContain('support@linux-hosting.co.il@mail.example.com');
expect(out).toContain('alias@elsewhere.com@mail.example.com');
});
it('excludes the constructor username (cannot mask a desync)', async () => {
// A desynced slot: client built for support@ but the token resolves to
// shuki@. Candidates come only from the server (session + identities),
// never the constructor echo, so support@ is NOT among them.
const out = await connectedAccountCandidates(
fakeClient({ sessionUsername: 'shuki@linux-hosting.co.il', constructorUsername: 'support@linux-hosting.co.il', identities: [id({ email: 'shuki@linux-hosting.co.il' })] }),
SERVER,
);
expect(out).not.toContain('support@linux-hosting.co.il@mail.example.com');
expect(out).toContain('shuki@linux-hosting.co.il@mail.example.com');
});
it('returns empty when nothing can be confirmed (caller must not bounce)', async () => {
const out = await connectedAccountCandidates(
fakeClient({ sessionUsername: undefined, identities: new Error('no idents') }), SERVER,
);
expect(out).toEqual([]);
});
});
describe('classifySessionMatch (account-switch verdict)', () => {
const CANDIDATES = ['linus@rathblume.de@mail.example.com', 'admin@rbm.systems@mail.example.com'];
it('accepts when a candidate equals the stored accountId (full-email login)', () => {
expect(classifySessionMatch(CANDIDATES, 'linus@rathblume.de@mail.example.com', [])).toBe('accept');
});
it('accepts a short-username accountId via captured server identifiers', () => {
// accountId built from the short login `linus`, which the server canonicalizes
// to linus@rathblume.de — the id itself never appears among the candidates.
expect(classifySessionMatch(CANDIDATES, 'linus@mail.example.com', CANDIDATES)).toBe('accept');
});
it('trusts a legacy account with no captured baseline (TOFU self-heal)', () => {
expect(classifySessionMatch(CANDIDATES, 'linus@mail.example.com', undefined)).toBe('trust');
});
it('rejects a real desync once a baseline exists', () => {
// slot resolves to a genuinely different account; baseline was captured before.
expect(
classifySessionMatch(['stranger@mail.example.com'], 'linus@mail.example.com', CANDIDATES),
).toBe('reject');
});
it('accepts when nothing could be confirmed (empty candidates never bounce)', () => {
expect(classifySessionMatch([], 'linus@mail.example.com', undefined)).toBe('accept');
expect(classifySessionMatch([], 'linus@mail.example.com', CANDIDATES)).toBe('accept');
});
});