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import assert from "assert";

import {promises as fs} from "fs";

import * as path from "path";

import {JSDOM} from "jsdom";

import beautify from "js-beautify";

import * as plots from "./plots/index.js";

(async () => {

for (const [name, plot] of Object.entries(plots)) {

it(`plot ${name}`, async () => {

try {

// Not recommended, but this is only our test code, so should be fine?

const {window} = new JSDOM("");

global.document = window.document;

global.Node = window.Node;

// Not fully functional, but only used to fetch data files, so should be fine?

global.fetch = async (href) => new Response(path.resolve("./test", href));

const root = await plot();

const [ext, svg] = root.tagName === "svg" ? ["svg", root] : ["html", root.querySelector("svg")];

svg.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns", "http://www.w3.org/2000/svg");

svg.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:xlink", "http://www.w3.org/1999/xlink");

const actual = beautify.html(root.outerHTML, {indent_size: 2});

const outfile = path.resolve("./test/output", path.basename(name, ".js") + "." + ext);

const diffile = path.resolve("./test/output", path.basename(name, ".js") + "-changed." + ext);

let expected;

try {

expected = await fs.readFile(outfile, "utf8");

} catch (error) {

if (error.code === "ENOENT" && process.env.CI !== "true") {

console.warn(`! generating ${outfile}`);

await fs.writeFile(outfile, actual, "utf8");

return;

} else {

throw error;

}

if (actual === expected) {

if (process.env.CI !== "true") {

try {

await fs.unlink(diffile);

console.warn(`! deleted ${diffile}`);

} catch (error) {

if (error.code !== "ENOENT") {

throw error;

}

} else {

console.warn(`! generating ${diffile}`);

await fs.writeFile(diffile, actual, "utf8");

}

assert(actual === expected, `${name} must match snapshot`);

} finally {

delete global.document;

delete global.Node;

delete global.fetch;

}

});

}

})();

class Response {

constructor(href) {

this._href = href;

this.ok = true;

this.status = 200;

}

async text() {

return fs.readFile(this._href, {encoding: "utf-8"});

}

async json() {

return JSON.parse(await this.text());

}

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