test(admin): harden booking document workflows

src/modules/ocean-bookings/components/OceanBookingPrintDialog.test.ts

@@ -54,4 +54,26 @@ describe('OceanBookingPrintDialog', () => {
     expect(document.body.textContent).toContain('trace-print')
     failed.unmount()
   })
+
+  it('suppresses duplicate preview clicks and restores loading after completion', async () => {
+    let resolvePrint!: (blob: Blob) => void
+    vi.mocked(downloadOceanBookingPrint).mockImplementation(() => new Promise<Blob>((resolve) => { resolvePrint = resolve }))
+    const wrapper = mount(OceanBookingPrintDialog, {
+      props: { modelValue: true, bookingId: '123', bookingNo: 'OB-123', allowed: true },
+      global: { plugins: [ElementPlus] },
+      attachTo: document.body,
+    })
+    await flushPromises()
+    await wrapper.findAll('.booking-print-option')[0]!.trigger('click')
+    const preview = Array.from(document.body.querySelectorAll('button')).find((button) => button.textContent?.includes('预览 PDF'))!
+    preview.click()
+    preview.click()
+    await flushPromises()
+    expect(downloadOceanBookingPrint).toHaveBeenCalledTimes(1)
+    expect(preview.disabled).toBe(true)
+    resolvePrint(new Blob(['pdf'], { type: 'application/pdf' }))
+    await flushPromises()
+    expect(document.body.querySelector('iframe')).not.toBeNull()
+    wrapper.unmount()
+  })
 })