import { describe, expect, it, vi } from 'vitest';
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import { exportLabelLayoutPdf } from './labelPdf';
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function createDependencies() {
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const canvas = document.createElement('canvas');
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vi.spyOn(canvas, 'toDataURL').mockReturnValue('data:image/png;base64,label');
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const pdf = {
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addImage: vi.fn(),
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addPage: vi.fn(),
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save: vi.fn(),
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};
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return {
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canvas,
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dependencies: {
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createCanvas: vi.fn().mockResolvedValue(canvas),
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createPdf: vi.fn().mockReturnValue(pdf),
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},
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pdf,
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};
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}
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describe('exportLabelLayoutPdf', () => {
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it('exports every label sheet as one landscape A4 page in source order', async () => {
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const { dependencies, pdf } = createDependencies();
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await exportLabelLayoutPdf(
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{
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fileName: '标签打印',
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html: '<div><section class="jnpf-label-sheet">第一页</section><section class="jnpf-label-sheet">第二页</section></div>',
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paperHeight: 210,
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paperWidth: 297,
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},
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dependencies,
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);
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expect(dependencies.createPdf).toHaveBeenCalledWith({ format: [297, 210], orientation: 'landscape', unit: 'mm' });
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expect(dependencies.createCanvas.mock.calls.map(([sheet]) => sheet.textContent)).toEqual(['第一页', '第二页']);
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expect(pdf.addPage).toHaveBeenCalledOnce();
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expect(pdf.addPage).toHaveBeenCalledWith([297, 210], 'landscape');
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expect(pdf.addImage).toHaveBeenCalledTimes(2);
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expect(pdf.addImage).toHaveBeenLastCalledWith('data:image/png;base64,label', 'PNG', 0, 0, 297, 210, undefined, 'FAST');
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expect(pdf.save).toHaveBeenCalledWith('标签打印.pdf');
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expect(document.querySelector('[aria-hidden="true"]')).toBeNull();
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});
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it('rejects invalid content and removes the temporary DOM after a render failure', async () => {
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const { dependencies } = createDependencies();
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await expect(exportLabelLayoutPdf({ fileName: 'empty', html: '<div></div>', paperHeight: 210, paperWidth: 297 }, dependencies)).rejects.toThrow(
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'未找到可导出的标签页面',
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);
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expect(document.querySelector('[aria-hidden="true"]')).toBeNull();
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dependencies.createCanvas.mockRejectedValueOnce(new Error('capture failed'));
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await expect(
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exportLabelLayoutPdf({ fileName: 'failed', html: '<section class="jnpf-label-sheet"></section>', paperHeight: 210, paperWidth: 297 }, dependencies),
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).rejects.toThrow('capture failed');
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expect(document.querySelector('[aria-hidden="true"]')).toBeNull();
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});
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});
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