test: add test cases for page setting atom (#2736)

apps/web/src/atoms/__tests__/atom.spec.ts

@@ -20,8 +20,45 @@ import { createStore } from 'jotai';
 import { describe, expect, test } from 'vitest';
 
 import { WorkspaceAdapters } from '../../adapters/workspace';
+import {
+  pageSettingFamily,
+  pageSettingsAtom,
+  recentPageSettingsAtom,
+} from '../index';
 import { rootCurrentWorkspaceAtom } from '../root';
 
+describe('page mode atom', () => {
+  test('basic', () => {
+    const store = createStore();
+    const page0SettingAtom = pageSettingFamily('page0');
+    store.set(page0SettingAtom, {
+      mode: 'page',
+    });
+
+    expect(store.get(pageSettingsAtom)).toEqual({
+      page0: {
+        mode: 'page',
+      },
+    });
+
+    expect(store.get(recentPageSettingsAtom)).toEqual([
+      {
+        id: 'page0',
+        mode: 'page',
+      },
+    ]);
+
+    const page1SettingAtom = pageSettingFamily('page1');
+    store.set(page1SettingAtom, {
+      mode: 'edgeless',
+    });
+    expect(store.get(recentPageSettingsAtom)).toEqual([
+      { id: 'page1', mode: 'edgeless' },
+      { id: 'page0', mode: 'page' },
+    ]);
+  });
+});
+
 describe('currentWorkspace atom', () => {
   test('should be defined', async () => {
     const store = createStore();