initialize project with Vue 3, Vite, and Element Plus; set up basic routing, components, configuration, and project structure

tests/session-sidebar.spec.js

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+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { mount, flushPromises } from '@vue/test-utils'
+import { createRouter, createMemoryHistory } from 'vue-router'
+import ElementPlus from 'element-plus'
+import SessionSidebar from '../src/components/SessionSidebar.vue'
+import LoginView from '../src/views/LoginView.vue'
+import axios from 'axios'
+
+vi.mock('axios', () => ({
+  default: {
+    get: vi.fn(),
+  },
+}))
+
+const mockedAxios = axios
+
+const makeRouter = () =>
+  createRouter({
+    history: createMemoryHistory(),
+    routes: [
+      { path: '/', name: 'login', component: LoginView },
+      { path: '/welcome', name: 'welcome', component: LoginView },
+    ],
+  })
+
+describe('SessionSidebar', () => {
+  beforeEach(() => {
+    localStorage.clear()
+    vi.clearAllMocks()
+  })
+
+  it('redirects to login without token', async () => {
+    const router = makeRouter()
+    router.push('/welcome')
+    await router.isReady()
+
+    mount(SessionSidebar, {
+      global: {
+        plugins: [router, ElementPlus],
+      },
+    })
+
+    await flushPromises()
+    expect(router.currentRoute.value.name).toBe('login')
+  })
+
+  it('renders sessions and selects one', async () => {
+    localStorage.setItem('ars-token', 'jwt-token')
+    mockedAxios.get.mockResolvedValue({
+      data: {
+        data: [
+          {
+            session_id: 's1',
+            session_name: 'Demo',
+            status: 'OPEN',
+            last_message_preview: 'Hi there',
+            last_seq: 3,
+            updated_at: '2025-02-14T10:00:00Z',
+          },
+        ],
+        total: 1,
+        current_page: 1,
+        per_page: 20,
+      },
+    })
+
+    const router = makeRouter()
+    router.push('/welcome')
+    await router.isReady()
+
+    const wrapper = mount(SessionSidebar, {
+      global: {
+        plugins: [router, ElementPlus],
+      },
+    })
+
+    await flushPromises()
+    expect(mockedAxios.get).toHaveBeenCalledWith(
+      'http://localhost:8000/api/sessions',
+      expect.any(Object)
+    )
+    expect(wrapper.text()).toContain('Demo')
+    await wrapper.find('.session-item').trigger('click')
+    expect(localStorage.getItem('ars-current-session')).toBe('s1')
+  })
+})