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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.import { delay, join, ROOT_PATH, TextLineStream, toFileUrl } from "../util.js";import { assert, denoBinary, ManifestTestOptions, runPy } from "./utils.ts";import { DOMParser } from "https://deno.land/x/deno_dom@v0.1.3-alpha2/deno-dom-wasm.ts";
export async function runWithTestUtil<T>(  verbose: boolean,  f: () => Promise<T>,): Promise<T> {  const proc = runPy([    "wpt",    "serve",    "--config",    "../../tools/wpt/config.json",  ], {    stdout: verbose ? "inherit" : "piped",    stderr: verbose ? "inherit" : "piped",  });
  const start = performance.now();  while (true) {    await delay(1000);    try {      const req = await fetch("http://localhost:8000/");      await req.body?.cancel();      if (req.status == 200) {        break;      }    } catch (_err) {      // do nothing if this fails    }    const passedTime = performance.now() - start;    if (passedTime > 15000) {      proc.kill("SIGINT");      await proc.status;      throw new Error("Timed out while trying to start wpt test util.");    }  }
  if (verbose) console.log(`Started wpt test util.`);
  try {    return await f();  } finally {    if (verbose) console.log("Killing wpt test util.");    proc.kill("SIGINT");    await proc.status;  }}
export interface TestResult {  cases: TestCaseResult[];  harnessStatus: TestHarnessStatus | null;  duration: number;  status: number;  stderr: string;}
export interface TestHarnessStatus {  status: number;  message: string | null;  stack: string | null;}
export interface TestCaseResult {  name: string;  passed: boolean;  status: number;  message: string | null;  stack: string | null;}
export async function runSingleTest(  url: URL,  _options: ManifestTestOptions,  reporter: (result: TestCaseResult) => void,  inspectBrk: boolean,): Promise<TestResult> {  const bundle = await generateBundle(url);  const tempFile = await Deno.makeTempFile({    prefix: "wpt-bundle-",    suffix: ".js",  });
  try {    await Deno.writeTextFile(tempFile, bundle);
    const startTime = new Date().getTime();
    const args = [      "run",      "-A",      "--unstable",    ];
    if (inspectBrk) {      args.push("--inspect-brk");    }
    args.push(      "--enable-testing-features-do-not-use",      "--location",      url.toString(),      "--cert",      join(ROOT_PATH, `./tools/wpt/certs/cacert.pem`),      tempFile,      "[]",    );
    const proc = Deno.spawnChild(denoBinary(), {      args,      env: {        NO_COLOR: "1",      },      stdout: "null",      stderr: "piped",    });
    const cases = [];    let stderr = "";
    let harnessStatus = null;
    const lines = proc.stderr.pipeThrough(new TextDecoderStream()).pipeThrough(      new TextLineStream(),    );    for await (const line of lines) {      if (line.startsWith("{")) {        const data = JSON.parse(line);        const result = { ...data, passed: data.status == 0 };        cases.push(result);        reporter(result);      } else if (line.startsWith("#$#$#{")) {        harnessStatus = JSON.parse(line.slice(5));      } else {        stderr += line + "\n";        console.error(line);      }    }
    const duration = new Date().getTime() - startTime;
    const { code } = await proc.status;    return {      status: code,      harnessStatus,      duration,      cases,      stderr,    };  } finally {    await Deno.remove(tempFile);  }}
async function generateBundle(location: URL): Promise<string> {  const res = await fetch(location);  const body = await res.text();  const doc = new DOMParser().parseFromString(body, "text/html");  assert(doc, "document should have been parsed");  const scripts = doc.getElementsByTagName("script");  const scriptContents = [];  let inlineScriptCount = 0;  for (const script of scripts) {    const src = script.getAttribute("src");    if (src === "/resources/testharnessreport.js") {      const url = toFileUrl(        join(ROOT_PATH, "./tools/wpt/testharnessreport.js"),      );      const contents = await Deno.readTextFile(url);      scriptContents.push([url.href, contents]);    } else if (src) {      const url = new URL(src, location);      const res = await fetch(url);      if (res.ok) {        const contents = await res.text();        scriptContents.push([url.href, contents]);      }    } else {      const url = new URL(`#${inlineScriptCount}`, location);      inlineScriptCount++;      scriptContents.push([url.href, script.textContent]);    }  }
  return scriptContents.map(([url, contents]) => `(function() {  const [_,err] = Deno.core.evalContext(${JSON.stringify(contents)}, ${    JSON.stringify(url)  });  if (err !== null) {    throw err?.thrown;  }})();`).join("\n");}