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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.import { xeval } from "./xeval.ts";import { assertEquals, assertStringIncludes } from "../testing/asserts.ts";import { dirname, fromFileUrl } from "../path/mod.ts";
const moduleDir = dirname(fromFileUrl(import.meta.url));
function createReadableStream(str: string) {  return new ReadableStream<Uint8Array>({    start(controller) {      controller.enqueue(new TextEncoder().encode(str));      controller.close();    },  });}
Deno.test("xevalSuccess", async function () {  const chunks: string[] = [];  await xeval(    createReadableStream("a\nb\nc"),    ($) => Promise.resolve(chunks.push($)),  );  assertEquals(chunks, ["a", "b", "c"]);});
Deno.test("xevalDelimiter", async function () {  const chunks: string[] = [];  await xeval(    createReadableStream("!MADMADAMADAM!"),    ($) => Promise.resolve(chunks.push($)),    {      delimiter: "MADAM",    },  );  assertEquals(chunks, ["!MAD", "ADAM!"]);});
const xevalPath = "xeval.ts";
Deno.test({  name: "xevalCliReplvar",  fn: async function () {    const p = Deno.spawnChild(Deno.execPath(), {      args: [        "run",        "--quiet",        xevalPath,        "--replvar=abc",        "console.log(abc)",      ],      cwd: moduleDir,      stdin: "piped",      stderr: "null",    });    const writer = p.stdin.getWriter();    await writer.write(new TextEncoder().encode("hello"));    await writer.close();    const { success, stdout } = await p.output();    assertEquals(success, true);    assertEquals(new TextDecoder().decode(stdout).trimEnd(), "hello");  },});
Deno.test("xevalCliSyntaxError", async function () {  const command = new Deno.Command(Deno.execPath(), {    args: ["run", "--quiet", xevalPath, "("],    cwd: moduleDir,  });  const { code, success, stdout, stderr } = await command.output();  const decoder = new TextDecoder();  assertEquals(code, 1);  assertEquals(success, false);  assertEquals(decoder.decode(stdout), "");  assertStringIncludes(decoder.decode(stderr), "SyntaxError");});