CodeSampleX

Exemplo

@testing-library/user-event 14.6.1

Amostra verificada para npm @testing-library/user-event 14.6.1. O contrato rodou em node 22 · linux debian/x64 · docker e passou.

sha256:56e29d1286de72618502c2096042dc15c59544195d4d5a9cf4c3ef20f8dc2a2b

Esta rede oferece uma coisa: uma amostra que compila. Ela a executou em um sandbox e guardou o recibo assinado. Não classifica nem garante nada — se o mesmo código compila onde você está, ela não mediu. Quantas chaves de assinatura distintas enviaram um recibo de contrato aprovado. Uma é só o autor; mais de uma significa que outra pessoa também o compilou. Uma chave é gerada por conta própria e não tem identidade registrada por trás, então conta chaves, não pessoas. MIT-0

Evidência de execução

O ambiente declarado e as execuções assinadas ficam separados, para você ver exatamente o que esta amostra executou e onde.

Base da evidência
Contrato assinado aprovado
Recibos de verificação
1
Chaves de assinatura que o compilaram
1
Ambiente declarado linux 24 · ubuntu · glibc 2.39 x64 npm

Ambientes das execuções de verificação

Ambiente Contrato Etapas Execução
node 22 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-09-12

Caso

HOW
Objetivo
verify pkg:npm/%40testing-library/user-event@14.6.1
Pacotes
Criado
2026-09-12T01:22:51Z

Contrato

  1. userEvent.setup initializes a user interaction session with configurable options and returns bound event methods
  2. user.click simulates pointer and mouse clicks to trigger click event handlers on buttons
  3. user.dblClick triggers double click events on interactive DOM elements
  4. user.type enters sequential characters into input elements updating value and dispatching input events
  5. user.clear removes existing content from text input elements and updates input value
  6. user.tab advances focus sequentially through focusable DOM elements
  7. user.hover and user.unhover trigger pointerenter and pointerleave transitions
  8. user.selectOptions selects option elements within a select dropdown list

Arquivos

  • .npmrc
  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.mjs
  • test/contract.mjs

Baixar o artefato de código-fonte (tar.gz)

Código-fonte

.npmrc
audit=false
PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:npm/%40testing-library/user-event@14.6.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40testing-library/user-event@14.6.1

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
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package.json
{
  "name": "sample-testing-library-user-event",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "description": "Clean-room verification for @testing-library/user-event",
  "main": "src/index.mjs",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "@testing-library/dom": "10.4.1",
    "@testing-library/user-event": "14.6.1",
    "jsdom": "26.0.0"
  },
  "license": "MIT-0"
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40testing-library/user-event@14.6.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40testing-library/user-event@14.6.1"
  ]
}
src/index.mjs
import userEvent from '@testing-library/user-event';

/**
 * Creates a configured UserEvent instance for interacting with DOM elements.
 *
 * @param {object} [options] - Configuration options for userEvent session
 * @returns {ReturnType<typeof userEvent.setup>} Configured userEvent session instance
 */
export function createUser(options = {}) {
  return userEvent.setup(options);
}

export { userEvent };
export default userEvent;
test/contract.mjs
import { JSDOM } from 'jsdom';
import assert from 'node:assert/strict';

// Setup DOM globals before importing user-event
const dom = new JSDOM('<!doctype html><html><body></body></html>', {
  url: 'http://localhost',
  pretendToBeVisual: true,
});

globalThis.window = dom.window;
globalThis.document = dom.window.document;
globalThis.HTMLElement = dom.window.HTMLElement;
globalThis.Element = dom.window.Element;
globalThis.Node = dom.window.Node;
globalThis.Event = dom.window.Event;
globalThis.UIEvent = dom.window.UIEvent;
globalThis.MouseEvent = dom.window.MouseEvent;
globalThis.KeyboardEvent = dom.window.KeyboardEvent;
globalThis.FocusEvent = dom.window.FocusEvent;
globalThis.PointerEvent = dom.window.PointerEvent;
globalThis.InputEvent = dom.window.InputEvent;
globalThis.HTMLInputElement = dom.window.HTMLInputElement;
globalThis.HTMLButtonElement = dom.window.HTMLButtonElement;
globalThis.HTMLSelectElement = dom.window.HTMLSelectElement;
globalThis.HTMLOptionElement = dom.window.HTMLOptionElement;
globalThis.getComputedStyle = dom.window.getComputedStyle;
globalThis.requestAnimationFrame = dom.window.requestAnimationFrame || ((cb) => setTimeout(cb, 0));
globalThis.cancelAnimationFrame = dom.window.cancelAnimationFrame || ((id) => clearTimeout(id));

const { userEvent, createUser } = await import('../src/index.mjs');

async function runContract() {
  const user = createUser({ document: dom.window.document });

  // 1. userEvent.setup initializes a user interaction session with configurable options and returns bound event methods
  assert.equal(typeof user, 'object', 'user must be an object');
  assert.equal(typeof user.click, 'function', 'user.click must be a function');
  assert.equal(typeof user.dblClick, 'function', 'user.dblClick must be a function');
  assert.equal(typeof user.type, 'function', 'user.type must be a function');
  assert.equal(typeof user.clear, 'function', 'user.clear must be a function');
  assert.equal(typeof user.tab, 'function', 'user.tab must be a function');
  assert.equal(typeof user.hover, 'function', 'user.hover must be a function');
  assert.equal(typeof user.unhover, 'function', 'user.unhover must be a function');
  assert.equal(typeof user.selectOptions, 'function', 'user.selectOptions must be a function');

  // 2. user.click simulates pointer and mouse clicks to trigger click event handlers on buttons
  {
    const button = dom.window.document.createElement('button');
    button.textContent = 'Submit';
    dom.window.document.body.appendChild(button);

    let clickCount = 0;
    button.addEventListener('click', () => {
      clickCount += 1;
    });

    await user.click(button);
    assert.equal(clickCount, 1, 'click event handler should be triggered once');
    dom.window.document.body.removeChild(button);
  }

  // 3. user.dblClick triggers double click events on interactive DOM elements
  {
    const button = dom.window.document.createElement('button');
    dom.window.document.body.appendChild(button);

    let dblClickFired = false;
    button.addEventListener('dblclick', () => {
      dblClickFired = true;
    });

    await user.dblClick(button);
    assert.equal(dblClickFired, true, 'dblclick event handler should be triggered');
    dom.window.document.body.removeChild(button);
  }

  // 4. user.type enters sequential characters into input elements updating value and dispatching input events
  {
    const input = dom.window.document.createElement('input');
    input.type = 'text';
    dom.window.document.body.appendChild(input);

    let inputEvents = 0;
    input.addEventListener('input', () => {
      inputEvents += 1;
    });

    await user.type(input, 'Testing');
    assert.equal(input.value, 'Testing', 'input value should match typed text');
    assert.equal(inputEvents, 'Testing'.length, 'input event should fire for each typed character');
    dom.window.document.body.removeChild(input);
  }

  // 5. user.clear removes existing content from text input elements and updates input value
  {
    const input = dom.window.document.createElement('input');
    input.type = 'text';
    input.value = 'Existing content';
    dom.window.document.body.appendChild(input);

    await user.clear(input);
    assert.equal(input.value, '', 'input value should be cleared');
    dom.window.document.body.removeChild(input);
  }

  // 6. user.tab advances focus sequentially through focusable DOM elements
  {
    const input1 = dom.window.document.createElement('input');
    input1.id = 'first';
    const input2 = dom.window.document.createElement('input');
    input2.id = 'second';
    dom.window.document.body.appendChild(input1);
    dom.window.document.body.appendChild(input2);

    dom.window.document.body.focus();
    await user.tab();
    assert.equal(dom.window.document.activeElement, input1, 'first tab should focus input1');

    await user.tab();
    assert.equal(dom.window.document.activeElement, input2, 'second tab should focus input2');

    dom.window.document.body.removeChild(input1);
    dom.window.document.body.removeChild(input2);
  }

  // 7. user.hover and user.unhover trigger pointerenter and pointerleave transitions
  {
    const box = dom.window.document.createElement('div');
    dom.window.document.body.appendChild(box);

    let pointerEnterCount = 0;
    let pointerLeaveCount = 0;
    box.addEventListener('pointerenter', () => {
      pointerEnterCount += 1;
    });
    box.addEventListener('pointerleave', () => {
      pointerLeaveCount += 1;
    });

    await user.hover(box);
    assert.equal(pointerEnterCount, 1, 'pointerenter should fire upon hover');

    await user.unhover(box);
    assert.equal(pointerLeaveCount, 1, 'pointerleave should fire upon unhover');

    dom.window.document.body.removeChild(box);
  }

  // 8. user.selectOptions selects option elements within a select dropdown list
  {
    const select = dom.window.document.createElement('select');
    const optA = dom.window.document.createElement('option');
    optA.value = 'A';
    optA.textContent = 'Option A';
    const optB = dom.window.document.createElement('option');
    optB.value = 'B';
    optB.textContent = 'Option B';

    select.appendChild(optA);
    select.appendChild(optB);
    dom.window.document.body.appendChild(select);

    await user.selectOptions(select, 'B');
    assert.equal(select.value, 'B', 'select value should be Option B');
    assert.equal(optB.selected, true, 'Option B should be selected');

    dom.window.document.body.removeChild(select);
  }

  console.log('Contract tests passed successfully.');
}

await runContract();

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