Added tests, shift 'delete'. Fixed overnight shifts, sync, error handling.

frontend/src/sync.test.js

@@ -0,0 +1,88 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest'
+import { db, getLastSync, setLastSync } from './db.js'
+
+beforeEach(async () => {
+  await Promise.all(db.tables.map(t => t.clear()))
+  vi.restoreAllMocks()
+})
+
+function mockFetch(body = {}, status = 200) {
+  globalThis.fetch = vi.fn(() =>
+    Promise.resolve({
+      ok: status >= 200 && status < 300,
+      status,
+      statusText: 'OK',
+      json: () => Promise.resolve(body),
+    })
+  )
+}
+
+describe('syncPull', () => {
+  it('writes attendees to Dexie', async () => {
+    mockFetch({
+      server_time: '2026-03-01T12:00:00Z',
+      attendees: [{ id: 1, name: 'Titania' }],
+      departments: [],
+      volunteers: [],
+      shifts: [],
+      volunteer_shifts: [],
+    })
+    // Import fresh to reset syncing guard
+    const { syncPull } = await import('./sync.js')
+    await syncPull()
+
+    const a = await db.attendees.get(1)
+    expect(a.name).toBe('Titania')
+    expect(await getLastSync()).toBe('2026-03-01T12:00:00Z')
+  })
+
+  it('deletes soft-deleted attendees from Dexie', async () => {
+    await db.attendees.put({ id: 1, name: 'Titania' })
+
+    mockFetch({
+      server_time: '2026-03-01T13:00:00Z',
+      attendees: [{ id: 1, name: 'Titania', deleted_at: '2026-03-01T12:30:00Z' }],
+      departments: [],
+      volunteers: [],
+      shifts: [],
+      volunteer_shifts: [],
+    })
+    const { syncPull } = await import('./sync.js')
+    await syncPull()
+
+    const a = await db.attendees.get(1)
+    expect(a).toBeUndefined()
+  })
+
+  it('deletes soft-deleted volunteer_shifts from Dexie', async () => {
+    await db.volunteer_shifts.put({ volunteer_id: 1, shift_id: 2 })
+
+    mockFetch({
+      server_time: '2026-03-01T13:00:00Z',
+      attendees: [],
+      departments: [],
+      volunteers: [],
+      shifts: [],
+      volunteer_shifts: [{ volunteer_id: 1, shift_id: 2, deleted_at: '2026-03-01T12:30:00Z' }],
+    })
+    const { syncPull } = await import('./sync.js')
+    await syncPull()
+
+    const vs = await db.volunteer_shifts.get([1, 2])
+    expect(vs).toBeUndefined()
+  })
+
+  it('sets lastSync timestamp', async () => {
+    mockFetch({
+      server_time: '2026-03-02T00:00:00Z',
+      attendees: [],
+      departments: [],
+      volunteers: [],
+      shifts: [],
+      volunteer_shifts: [],
+    })
+    const { syncPull } = await import('./sync.js')
+    await syncPull()
+    expect(await getLastSync()).toBe('2026-03-02T00:00:00Z')
+  })
+})