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MorphDoc/apps/web/tests/mermaid-page-fit.test.ts
T

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TypeScript

import { defaultExportConfig } from "@md-to-pdf/core";
import { describe, expect, it } from "vitest";
import {
calculateMermaidPageFit,
getPageContentDimensions,
parseSvgViewBox
} from "../src/mermaid-page-fit";
describe("Mermaid 单页高度适配", () => {
it("解析 SVG viewBox 尺寸", () => {
expect(parseSvgViewBox("0 0 1200 2400")).toEqual({
width: 1200,
height: 2400
});
expect(parseSvgViewBox("0,0,800,600")).toEqual({
width: 800,
height: 600
});
expect(parseSvgViewBox("0 0 0 600")).toBeUndefined();
expect(parseSvgViewBox(null)).toBeUndefined();
});
it("使用纸张和页边距计算正文区域", () => {
const dimensions = getPageContentDimensions(defaultExportConfig);
expect(dimensions.width).toBeCloseTo(672.7559, 3);
expect(dimensions.height).toBeCloseTo(1001.5748, 3);
});
it("宽度适配后未超高时保持普通 Mermaid 布局", () => {
const fit = calculateMermaidPageFit(
{ width: 1600, height: 900 },
{ width: 672, height: 1000 }
);
expect(fit).toEqual({
width: 672,
height: 378,
scaled: false
});
});
it("宽度适配后超高时按页面高度等比例缩小", () => {
const fit = calculateMermaidPageFit(
{ width: 1000, height: 2000 },
{ width: 672, height: 1000 }
);
expect(fit.scaled).toBe(true);
expect(fit.height).toBe(999);
expect(fit.width).toBe(499.5);
});
});