collective-lists/packages/test-utils/tests/sync-queue.test.ts

/**
 * Sync queue unit tests (Fase 2b.2).
 *
 * These describe the contract of the offline mutation queue that will live at
 * `apps/web/src/lib/sync/queue.ts`. They are skipped until that module exists.
 * When implementation lands, remove the `describe.skip` (NOT the inner skips)
 * and each test should fail red → pass green as features are built.
 *
 * Why they're here (not in apps/web): keeping all Vitest tests in one package
 * for `just test-integration`. If we ever add Vitest to apps/web directly, move
 * these files over and drop the cross-package import.
 */
import { describe, it, expect } from 'vitest';

describe.skip('sync queue — pending_ops contract (Fase 2b.2)', () => {
	it('Q-01: enqueue writes the op to pending_ops before the Supabase call', async () => {
		// Given a mocked idb + mocked supabase.from().insert()
		// When sync.enqueue({ op: "insert", table: "shopping_items", payload })
		// Then pending_ops should contain the op before the supabase call fires,
		//      and the supabase call should only be awaited after the write.
		expect(true).toBe(true); // placeholder
	});

	it('Q-02: successful sync removes the op from pending_ops', async () => {
		// Given an op in pending_ops
		// When the supabase call resolves with no error
		// Then the op should be removed from pending_ops
		expect(true).toBe(true);
	});

	it('Q-03: failed sync keeps the op in pending_ops for retry', async () => {
		// Given an op in pending_ops
		// When the supabase call throws (network error)
		// Then the op remains, its `attempts` counter increments,
		//      and the promise resolves (does NOT throw) — errors are deferred
		//      so callers can keep working offline.
		expect(true).toBe(true);
	});

	it('Q-04: ops are processed in insertion order on flush', async () => {
		// Given three ops A, B, C in pending_ops in that order
		// When flush() runs
		// Then supabase calls happen in A, B, C order regardless of timing
		expect(true).toBe(true);
	});
});

describe.skip('sync flush — online event fallback (Fase 2b.2, Safari-safe)', () => {
	it('F-01: window "online" event triggers flush()', async () => {
		// Given pending ops and a mocked window
		// When dispatch Event("online")
		// Then flush() is called within 100ms
		expect(true).toBe(true);
	});

	it('F-02: last-write-wins on conflict — remote updated_at > local', async () => {
		// Given a local op that would overwrite a remote row with a newer updated_at
		// When flush runs
		// Then the local op is DROPPED (not retried) and a sync_conflicts row is written
		expect(true).toBe(true);
	});

	it('F-03: last-write-wins — local updated_at > remote, local wins', async () => {
		// Given a local op newer than the remote row
		// When flush runs
		// Then the local op is APPLIED normally, no conflict row
		expect(true).toBe(true);
	});
});