feat: add data import/export bundle

frontend/src/__tests__/integration/data-import.spec.ts

@@ -0,0 +1,70 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { mount } from '@vue/test-utils'
+import ImportDataModal from '@/components/admin/account/ImportDataModal.vue'
+
+const showError = vi.fn()
+const showSuccess = vi.fn()
+
+vi.mock('@/stores/app', () => ({
+  useAppStore: () => ({
+    showError,
+    showSuccess
+  })
+}))
+
+vi.mock('@/api/admin', () => ({
+  adminAPI: {
+    accounts: {
+      importData: vi.fn()
+    }
+  }
+}))
+
+vi.mock('vue-i18n', () => ({
+  useI18n: () => ({
+    t: (key: string) => key
+  })
+}))
+
+describe('ImportDataModal', () => {
+  beforeEach(() => {
+    showError.mockReset()
+    showSuccess.mockReset()
+  })
+
+  it('未选择文件时提示错误', async () => {
+    const wrapper = mount(ImportDataModal, {
+      props: { show: true },
+      global: {
+        stubs: {
+          BaseDialog: { template: '<div><slot /><slot name="footer" /></div>' }
+        }
+      }
+    })
+
+    await wrapper.find('form').trigger('submit')
+    expect(showError).toHaveBeenCalledWith('admin.accounts.dataImportSelectFile')
+  })
+
+  it('无效 JSON 时提示解析失败', async () => {
+    const wrapper = mount(ImportDataModal, {
+      props: { show: true },
+      global: {
+        stubs: {
+          BaseDialog: { template: '<div><slot /><slot name="footer" /></div>' }
+        }
+      }
+    })
+
+    const input = wrapper.find('input[type="file"]')
+    const file = new File(['invalid json'], 'data.json', { type: 'application/json' })
+    Object.defineProperty(input.element, 'files', {
+      value: [file]
+    })
+
+    await input.trigger('change')
+    await wrapper.find('form').trigger('submit')
+
+    expect(showError).toHaveBeenCalledWith('admin.accounts.dataImportParseFailed')
+  })
+})