123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.import { stripColor } from "../fmt/colors.ts";import { ensureDir } from "../fs/mod.ts";import { dirname, fromFileUrl, join } from "../path/mod.ts";import { assert, assertInstanceOf, AssertionError, fail } from "./asserts.ts";import { assertSnapshot } from "./snapshot.ts";
class TestClass {  a = 1;  b = 2;  init() {    this.b = 3;  }  get getA() {    return this.a;  }  func() {}}
const map = new Map();map.set("Hello", "World!");map.set(() => "Hello", "World!");map.set(1, 2);
Deno.test("Snapshot Test", async (t) => {  await assertSnapshot(t, { a: 1, b: 2 });  await assertSnapshot(t, new TestClass());  await assertSnapshot(t, map);  await assertSnapshot(t, new Set([1, 2, 3]));  await assertSnapshot(t, { fn() {} });  await assertSnapshot(t, function fn() {});  await assertSnapshot(t, [1, 2, 3]);  await assertSnapshot(t, "hello world");});
Deno.test("Snapshot Test - step", async (t) => {  await assertSnapshot(t, { a: 1, b: 2 });  await t.step("Nested", async (t) => {    await assertSnapshot(t, new TestClass());    await assertSnapshot(t, map);    await t.step("Nested Nested", async (t) => {      await assertSnapshot(t, new Set([1, 2, 3]));      await assertSnapshot(t, { fn() {} });      await assertSnapshot(t, function fn() {});    });    await assertSnapshot(t, [1, 2, 3]);  });  await assertSnapshot(t, "hello world");});
Deno.test("Snapshot Test - Adverse String \\ ` ${}", async (t) => {  await assertSnapshot(t, "\\ ` ${}");});
Deno.test("Snapshot Test - Failed Assertion", async (t) => {  await t.step("Object", async (t) => {    try {      await assertSnapshot(t, [1, 2]);      fail("Expected snapshot not to match");    } catch (error) {      assertInstanceOf(error, AssertionError);      await assertSnapshot(t, stripColor(error.message).split("\n"));    }  });  await t.step("String", async (t) => {    try {      await assertSnapshot(t, "Hello!");      fail("Expected snapshot not to match");    } catch (error) {      assertInstanceOf(error, AssertionError);      await assertSnapshot(t, stripColor(error.message).split("\n"));    }  });});
Deno.test("Snapshot Test - Update", async (t) => {  const TEMP_DIR = ".tmp";
  async function runTestWithUpdateFlag(test: string, deleteTempDir = true) {    const testDir = dirname(fromFileUrl(import.meta.url));    const tempDir = join(testDir, TEMP_DIR);    const tempTestFileName = "test.ts";    const tempTestFilePath = join(tempDir, tempTestFileName);    await ensureDir(tempDir);    await Deno.writeTextFile(tempTestFilePath, test);
    const process = await Deno.run({      cmd: ["deno", "test", "--allow-all", tempTestFilePath, "--", "-u"],      stdout: "piped",      stderr: "piped",    });    const output = await process.output();    const error = await process.stderrOutput();    process.close();
    if (deleteTempDir) {      await Deno.remove(tempDir, { recursive: true });    }
    return {      output: new TextDecoder().decode(output),      error: new TextDecoder().decode(error),    };  }
  function formatOutput(string: string) {    // Strip colors and obfuscate any timings    return stripColor(string).replace(/([0-9])+m?s/g, "--ms");  }
  function formatError(string: string) {    // Strip colors and remove "Check file:///workspaces/deno_std/testing/.tmp/test.ts"    // as this is always output to stderr    return stripColor(string).replace(/^Check file:\/\/(.+)\n/g, "");  }
  /**   * New snapshot   */  const result1 = await runTestWithUpdateFlag(    `    import { assertSnapshot } from "../snapshot.ts";
    Deno.test("Snapshot Test - Update", async (t) => {      await assertSnapshot(t, [        1,        2,      ]);    });    `,    false,  );
  await assertSnapshot(t, formatOutput(result1.output).split("\n"));  assert(!formatError(result1.error), "unexpected output to stderr");
  /**   * Existing snapshot - no changes   */  const result2 = await runTestWithUpdateFlag(    `    import { assertSnapshot } from "../snapshot.ts";
    Deno.test("Snapshot Test - Update", async (t) => {      await assertSnapshot(t, [        1,        2,      ]);    });    `,    false,  );
  await assertSnapshot(t, formatOutput(result2.output).split("\n"));  assert(!formatError(result2.error), "unexpected output to stderr");
  /**   * Existing snapshot - updates   */  const result3 = await runTestWithUpdateFlag(`    import { assertSnapshot } from "../snapshot.ts";
    Deno.test("Snapshot Test - Update", async (t) => {      await assertSnapshot(t, [        1,        2,        3,        5,      ]);    });  `);
  await assertSnapshot(t, formatOutput(result3.output).split("\n"));  assert(!formatError(result3.error), "unexpected output to stderr");});
// Regression test for https://github.com/denoland/deno_std/issues/2140// Long strings should not be truncated with ellipsisDeno.test("Snapshot Test - Regression #2140", async (t) => {  await assertSnapshot(t, {    title: "Testing a page",    content: `      <h1>Testing a page</h1>      <p>This is a test</p>      <ul>        <li>1</li>        <li>2</li>        <li>3</li>        <li>4</li>      </ul>      `,  });});
// Regression test for https://github.com/denoland/deno_std/issues/2144// Empty arrays should be compactedDeno.test("Snapshot Test - Regression #2144", async (t) => {  const config = {    fmt: {      files: {        exclude: [],        include: [],      },      options: {},    },  };  await assertSnapshot(t, config);});