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The GitHub Actions job "npm_and_yarn in /frontend for websocket-driver - Update #1468925377" on texera.git/main has succeeded.
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Head commit for run:
42027e8c38d248a60cab32871887bc754ef311b5 / Meng Wang <me...@uci.edu>
test(frontend): extend UndoRedoService, WorkflowConsoleService, and NotificationService coverage (#6603)

### What changes were proposed in this PR?

Extends three near-empty workspace/common service specs (Vitest; no
production
code changed).

**`UndoRedoService`** (+7 tests) — a new describe drives the service
through a
`Y.UndoManager` double via `setUndoManager`: `undoAction` / `redoAction`
delegate
to the manager only when it can undo/redo (and toggle the joint-command
guard
back on), and are no-ops when the manager can't or while workflow
modification is
disabled; `canUndo` / `canRedo` require both the guard and the manager;
`getUndoLength` / `getRedoLength` reflect the stacks; `clearUndoStack` /
`clearRedoStack` clear the correct side; and with no manager `canUndo` /
`canRedo` are false.

**`WorkflowConsoleService`** (+3 tests) — a controlled
`WorkflowWebsocketService`
double drives the constructor's event subscriptions: a
`ConsoleUpdateEvent`
buffers messages exposed per operator via `getConsoleMessages` /
`hasConsoleMessages` and pushes an update;
`registerAutoClearConsoleMessages`
clears the store on an `Initializing` `WorkflowStateEvent` (and leaves
it alone
for other states).

**`NotificationService`** (+4 tests) — `NzMessageService` /
`NzNotificationService`
doubles verify `success` / `info` / `error` / `warning` / `loading`
delegate to
the message service (with the content/options and returned ref) and
`blank` /
`remove` delegate to the notification service.

> Note: the issue lists `remove` as delegating to the message service;
the code
> actually routes `blank` and `remove` to `NzNotificationService`, which
the test
> asserts.

### Any related issues, documentation, discussions?

Closes #6589

### How was this PR tested?

Extended unit tests, run locally in `frontend/` (all green; each spec's
failure
path was verified by breaking a new assertion to confirm it goes red):

```
ng test --watch=false --include src/app/workspace/service/undo-redo/undo-redo.service.spec.ts               # 11 passed
ng test --watch=false --include src/app/workspace/service/workflow-console/workflow-console.service.spec.ts # 5 passed
ng test --watch=false --include src/app/common/service/notification/notification.service.spec.ts            # 6 passed
prettier --write <specs>   # clean
eslint  <specs>            # clean
```

All collaborators are stubbed, so the suite makes no network/websocket
calls
(see `frontend/TESTING.md`).

### Was this PR authored or co-authored using generative AI tooling?

Generated-by: Claude Code (Opus 4.8 [1M context])

Report URL: https://github.com/apache/texera/actions/runs/29773406622

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