fix(ui): снимать статус live при отсутствии обновлений

tests/e2e/live-stream-fixture.ts

@@ -0,0 +1,25 @@
+import type { Page } from '@playwright/test'
+
+// Keep a response open; the browser test controls sample delivery independently of HTTP routes.
+export async function installOpenLiveStream(page: Page, path: string, sample: unknown) {
+  await page.clock.install()
+  await page.addInitScript(({ path, sample }) => {
+    const originalFetch = window.fetch.bind(window)
+    window.fetch = async (input, init) => {
+      const url = new URL(input instanceof Request ? input.url : String(input), location.href)
+      if (url.pathname !== path) return originalFetch(input, init)
+      const stream = new ReadableStream<Uint8Array>({
+        start(controller) {
+          const send = () => controller.enqueue(new TextEncoder().encode('event: sample\ndata: ' + JSON.stringify(sample) + '\n\n'))
+          Object.assign(window, { sendLiveSample: send })
+          send()
+        },
+      })
+      return new Response(stream, { headers: { 'Content-Type': 'text/event-stream' } })
+    }
+  }, { path, sample })
+}
+
+export async function resumeLiveStream(page: Page) {
+  await page.evaluate(() => (window as unknown as { sendLiveSample: () => void }).sendLiveSample())
+}

tests/e2e/traffic-flow.spec.ts

@@ -1,3 +1,4 @@
+import { installOpenLiveStream, resumeLiveStream } from "./live-stream-fixture"
 import { test, expect, type Page } from '@playwright/test'
 
 async function setup(page: Page) {
@@ -319,3 +320,24 @@ test('Flow: время получения принадлежит текущем
   await expect(page.getByRole('alert').filter({ hasText: 'Аналитика недоступна' })).toBeVisible()
   await expect(receipt).toHaveCount(0)
 })
+
+
+test('Flow: молчащий SSE сохраняет данные и восстанавливает live после sample', async ({ page }) => {
+  await installOpenLiveStream(page, '/api/traffic/flow/live', { bpsNow: 1000000, bytes: 200, packets: 2, conversations: 1, uniqueSrc: 1, uniqueDst: 1, topProto: 'TCP', rxSeries: [1], txSeries: [2], applications: [], protocols: [], sources: [], destinations: [], interfaces: [], conversationsList: [], ifaces: [], live: true })
+  await setup(page)
+  const receipt = page.getByLabel('Получение аналитики потоков').locator('time')
+  await expect(page.getByText('live', { exact: true }).filter({ visible: true })).toHaveCount(3)
+  const stamp = await receipt.getAttribute('datetime')
+  await page.clock.fastForward(15_001)
+  await expect(page.getByText('Нет обновлений live более 15 секунд', { exact: true })).toBeVisible()
+  await expect(page.getByText('live', { exact: true })).toHaveCount(0)
+  await expect(page.getByLabel('Скорость потоков')).toContainText('1.00 Мбит/с')
+  await expect(receipt).toHaveAttribute('datetime', stamp!)
+  await resumeLiveStream(page)
+  await expect(page.getByText('live', { exact: true }).filter({ visible: true })).toHaveCount(3)
+  await expect(page.getByText('Нет обновлений live более 15 секунд', { exact: true })).toHaveCount(0)
+  await page.getByRole('button', { name: '15м', exact: true }).click()
+  await expect(page.getByText('Категория 15m', { exact: true }).filter({ visible: true })).toBeVisible()
+  await page.clock.fastForward(15_001)
+  await expect(page.getByText('Нет обновлений live более 15 секунд', { exact: true })).toHaveCount(0)
+})

tests/e2e/traffic-live.spec.ts

@@ -1,6 +1,7 @@
+import { installOpenLiveStream, resumeLiveStream } from "./live-stream-fixture"
 import { test, expect } from '@playwright/test'
 
-for (const variant of ['closed', 'invalid', 'http-error'] as const) {
+for (const variant of ['closed', 'invalid', 'http-error', 'silent'] as const) {
   test(`Трафик: SSE ${variant} не выдаёт старое измерение за live`, async ({ page }) => {
     const server = { id: '1', name: 'Тестовый сервер', site: 'TEST', country: 'RU', status: 'online', rxNow: 2, txNow: 3, rxPeak: 5, txPeak: 6, rxTotal: 100, txTotal: 200, sessions: 1, rxSeries: [1, 2], txSeries: [2, 3] }
     await page.route('**/health', route => route.fulfill({ json: { ok: true } }))
@@ -22,11 +23,26 @@ for (const variant of ['closed', 'invalid', 'http-error'] as const) {
         : path === '/api/servers' ? [] : {}
       return route.fulfill({ json })
     })
+    if (variant === 'silent') await installOpenLiveStream(page, '/api/traffic/servers/1/live', { rxMbps: 17, txMbps: 19, at: '2026-09-23T12:00:00Z' })
     const received = new Date('2026-09-28T06:00:00Z')
     await page.clock.setFixedTime(received)
     await page.goto('/traffic')
     const summary = page.getByLabel('Скорость выбранного сервера')
     await expect(summary).toBeVisible()
+    if (variant === 'silent') {
+      await expect(summary.getByText('live', { exact: true }).filter({ visible: true })).toHaveCount(2)
+      const stamp = await page.getByLabel('Последнее измерение сервера').locator('time').first().getAttribute('datetime')
+      await page.clock.fastForward(15_001)
+      await expect(summary.getByText('live', { exact: true })).toHaveCount(0)
+      await expect(summary).toContainText('17.0')
+      await expect(page.getByLabel('Последнее измерение сервера').locator('time').first()).toHaveAttribute('datetime', stamp!)
+      await resumeLiveStream(page)
+      await expect(summary.getByText('live', { exact: true }).filter({ visible: true })).toHaveCount(2)
+      await page.getByRole('group', { name: 'Разделы трафика' }).getByRole('button', { name: 'Клиенты', exact: true }).click()
+      await page.clock.fastForward(15_001)
+      await expect(page.getByLabel('Последнее измерение сервера')).toHaveCount(0)
+      return
+    }
     const hint = variant === 'http-error' ? 'История · live недоступен' : 'Последнее live-измерение · поток недоступен'
     await expect(summary.getByText(hint, { exact: true }).filter({ visible: true })).toHaveCount(2)
     await expect(summary.getByText('live', { exact: true })).toHaveCount(0)