35 lines
979 B
TypeScript
35 lines
979 B
TypeScript
import { describe, expect, it } from "vitest";
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import {
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getPdfCanvasRenderScale,
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getPdfPageCssDimensions,
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PDF_PAGE_CSS_SCALE
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} from "../src/pdf-page-geometry";
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describe("精确 PDF 页面尺寸", () => {
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it("按 96 CSS PPI 映射 PDF 点尺寸", () => {
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expect(PDF_PAGE_CSS_SCALE).toBeCloseTo(4 / 3);
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expect(
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getPdfPageCssDimensions(595.275591, 841.889764)
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).toEqual({
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width: expect.closeTo(793.700788, 5),
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height: expect.closeTo(1122.519685, 5)
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});
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});
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it("按预览缩放比例调整 PDF 页面显示尺寸", () => {
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expect(
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getPdfPageCssDimensions(595.275591, 841.889764, 1.5)
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).toEqual({
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width: expect.closeTo(1190.551182, 5),
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height: expect.closeTo(1683.779528, 5)
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});
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});
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it("结合显示宽度和设备像素比计算 Canvas 比例", () => {
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expect(getPdfCanvasRenderScale(600, 800, 2)).toBeCloseTo(
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8 / 3
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);
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expect(getPdfCanvasRenderScale(0, 800, 2)).toBe(0);
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});
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});
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