[web] Add offline indicator to toolbar (#35368)

GitOrigin-RevId: 81127bff21afb6aadcf175ba1767a2629f01d747

services/web/test/frontend/features/ide-react/components/unsaved-docs/unsaved-docs.spec.tsx

@@ -0,0 +1,74 @@
+import { UnsavedDocs } from '@/features/ide-react/components/unsaved-docs/unsaved-docs'
+import { UnsavedDocsContext } from '@/features/ide-react/context/unsaved-docs-context'
+import { GlobalAlertsProvider } from '@/features/ide-react/context/global-alerts-context'
+import { FileTreePathContext } from '@/features/file-tree/contexts/file-tree-path'
+import { ConnectionContext } from '@/features/ide-react/context/connection-context'
+import { SplitTestProvider } from '@/shared/context/split-test-context'
+
+const defaultUnsavedDocsContextValue = {
+  unsavedDocs: new Map<string, number>([['doc1', 16]]),
+  isLocked: false,
+}
+
+const mockSocket = {
+  socket: { transport: { name: 'websocket' } },
+} as any
+
+const mockConnectionContextValue = {
+  socket: mockSocket,
+  connectionState: { readyState: WebSocket.OPEN },
+  isConnected: true,
+  isStillReconnecting: false,
+  secondsUntilReconnect: () => 0,
+  tryReconnectNow: () => {},
+  registerUserActivity: () => {},
+  closeConnection: () => {},
+  getSocketDebuggingInfo: () => ({ id: '' }),
+} as any
+
+const mockFileTreePathContextValue = {
+  dirname: () => '',
+  pathInFolder: (docId: string) => (docId === 'doc1' ? 'main.tex' : null),
+  findEntityByPath: (path: string) =>
+    path === 'main.tex'
+      ? { entity: { _id: 'doc1', name: 'main.tex' }, type: 'doc' as const }
+      : null,
+  previewByPath: () => null,
+}
+
+const mount = () => {
+  cy.mount(
+    <SplitTestProvider>
+      <GlobalAlertsProvider>
+        <ConnectionContext.Provider value={mockConnectionContextValue}>
+          <FileTreePathContext.Provider value={mockFileTreePathContextValue}>
+            <UnsavedDocsContext.Provider value={defaultUnsavedDocsContextValue}>
+              <UnsavedDocs />
+            </UnsavedDocsContext.Provider>
+          </FileTreePathContext.Provider>
+        </ConnectionContext.Provider>
+      </GlobalAlertsProvider>
+    </SplitTestProvider>
+  )
+}
+
+const enableFlag = () => {
+  cy.window().then(win => {
+    win.metaAttributesCache.set('ol-splitTestVariants', {
+      'intermittent-connection-improvements': 'enabled',
+    })
+  })
+}
+
+describe('<UnsavedDocs />', function () {
+  it('shows UnsavedDocsAlert when flag is disabled', function () {
+    mount()
+    cy.findByRole('alert').should('exist')
+  })
+
+  it('suppresses UnsavedDocsAlert when flag is enabled', function () {
+    enableFlag()
+    mount()
+    cy.findByRole('alert').should('not.exist')
+  })
+})