{"id":12046,"date":"2024-03-18T13:29:14","date_gmt":"2024-03-18T12:29:14","guid":{"rendered":"https:\/\/martagonzalez.dev\/blog\/\/"},"modified":"2026-05-26T14:08:23","modified_gmt":"2026-05-26T12:08:23","slug":"pruebas-en-react-explorando-que-es-react-testing-library","status":"publish","type":"post","link":"https:\/\/martagonzalez.dev\/wp\/blog\/pruebas-en-react-explorando-que-es-react-testing-library\/","title":{"rendered":"Pruebas en React, explorando qu\u00e9 es React Testing Library"},"content":{"rendered":"<div class=\"kksr-ratings kksr-native\" data-payload=\"{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;12046&quot;,&quot;count&quot;:&quot;0&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u00bfTe ha resultado \u00fatil este art\u00edculo?&quot;,&quot;legend&quot;:&quot;{score}\/{best} \u00b7 {count} {votes}&quot;,&quot;_legend&quot;:&quot;{score}\/{best} \u00b7 {count} {votes}&quot;,&quot;score&quot;:&quot;0&quot;,&quot;size&quot;:&quot;24&quot;,&quot;legendonly&quot;:&quot;false&quot;,&quot;starsonly&quot;:&quot;false&quot;}\"><div class=\"kksr-stars\"><\/div><div class=\"kksr-legend\"><\/div><\/div>\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/martagonzalez.dev\/wp\/wp-content\/uploads\/2024\/03\/pruebas-en-react.avif\" alt=\"Ilustraci\u00f3n de una interfaz React con componentes en prueba y elementos resaltados, representando el uso de React Testing Library para verificar la experiencia del usuario\"\/ fetchpriority=\"high\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">En el vertiginoso mundo del desarrollo web, la <strong>calidad del software<\/strong> es clave. Una forma efectiva de garantizar que nuestras aplicaciones funcionen correctamente es realizar <strong>pruebas en React<\/strong> que simulen la experiencia real del usuario.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En este contexto, una de las herramientas m\u00e1s populares es <strong>React Testing Library<\/strong>: una <strong>biblioteca para probar componentes en React<\/strong> que se ha convertido en est\u00e1ndar gracias a su enfoque centrado en el usuario y su compatibilidad con buenas pr\u00e1cticas de accesibilidad.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En este art\u00edculo aprender\u00e1s qu\u00e9 es <strong>React Testing Library<\/strong>, c\u00f3mo usarla y c\u00f3mo integrarla en tus flujos de desarrollo para escribir pruebas m\u00e1s fiables, accesibles y resistentes a cambios internos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"#que-es-react-testing-library\">\u00bfQu\u00e9 es React Testing Library?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>React Testing Library<\/strong> es una biblioteca dise\u00f1ada para facilitar las <strong>pruebas de componentes en React<\/strong> de forma que se asemejen a c\u00f3mo interact\u00faa una persona usuaria con tu aplicaci\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En lugar de centrarse en detalles de implementaci\u00f3n, su enfoque est\u00e1 en validar el comportamiento visible de los componentes. Esto significa que, al utilizar <strong>React Testing Library<\/strong>, no accedemos directamente al estado o las props, sino que interactuamos con el DOM como lo har\u00eda un usuario real.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udccc M\u00e1s sobre c\u00f3mo dise\u00f1ar interfaces centradas en el usuario en mi art\u00edculo:<br><a href=\"https:\/\/martagonzalez.dev\/blog\/el-sindrome-baby-duck-en-ux-como-afecta-la-experiencia-del-usuario\/\" target=\"_blank\" rel=\"noopener\">Dise\u00f1o web con foco en la experiencia real<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"#como-funciona\">\u00bfC\u00f3mo funciona?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cuando trabajamos con <strong>React Testing Library<\/strong>, usamos funciones que simulan acciones como hacer clic en un bot\u00f3n, rellenar formularios o buscar texto visible. Esto promueve una mentalidad de testeo alineada con los principios de accesibilidad y uso real.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por ejemplo, funciones como <code>getByText<\/code>, <code>getByRole<\/code> o <code>fireEvent<\/code> nos permiten escribir pruebas comprensibles y robustas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Puedes ampliar conceptos de testeo basado en comportamiento en<br><a href=\"https:\/\/testing-library.com\/\" target=\"_blank\" rel=\"noopener\">testing-library.com<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Instalaci\u00f3n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Puedes instalarla con npm o yarn:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>npm install --save-dev @testing-library\/react<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">o<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>yarn add --dev @testing-library\/react\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2. Escribir pruebas con React Testing Library<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Una vez instalada la biblioteca, puedes comenzar a <strong>probar componentes en React<\/strong>. Por ejemplo:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import { render, screen, fireEvent } from '@testing-library\/react';\nimport Button from '.\/Button';\ntest('renders button with correct text', () => {\n  render(<button text=\"Click me\">);\n  const button = screen.getByText('Click me');\n  expect(button).toBeInTheDocument();\n});\ntest('fires onClick event when clicked', () => {\n  const handleClick = jest.fn();\n  render(<\/button><\/code><button onclick=\"{handleClick}\"><code>);\n  const button = screen.getByRole('button');\n  fireEvent.click(button);\n  expect(handleClick).toHaveBeenCalled();\n});\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"#afirmaciones-y-utilidades\">Afirmaciones y utilidades<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>React Testing Library<\/strong> se apoya en utilidades de <code>@testing-library\/jest-dom<\/code> que enriquecen las afirmaciones disponibles. Algunas comunes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>toBeInTheDocument()<\/code><\/li>\n\n\n\n<li><code>toHaveTextContent()<\/code><\/li>\n\n\n\n<li><code>toHaveClass()<\/code><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcd8 Aprende m\u00e1s en la documentaci\u00f3n oficial de<br><a href=\"https:\/\/github.com\/testing-library\/jest-dom\" target=\"_blank\" rel=\"noreferrer noopener\">jest-dom<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\/#medir-la-cobertura-de-tus-pruebas\">\ud83d\udcc8 Medir la cobertura de tus pruebas<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Otro beneficio de usar <strong>React Testing Library<\/strong> es su integraci\u00f3n fluida con herramientas como Jest para generar informes de cobertura de c\u00f3digo.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>npm test -- --coverage<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Esto te ayuda a detectar qu\u00e9 partes de tu aplicaci\u00f3n no est\u00e1n cubiertas por <strong>pruebas en React<\/strong>, aumentando as\u00ed la fiabilidad global del proyecto.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"#preguntas-frecuentes-faqs\">Preguntas Frecuentes (FAQs)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u00bfReact Testing Library o Enzyme?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ambas son bibliotecas para testear en React, pero con enfoques distintos. Mientras que Enzyme se enfoca en la estructura interna del componente, <strong>React Testing Library<\/strong> promueve pruebas de integraci\u00f3n, m\u00e1s resistentes a cambios y m\u00e1s representativas de la experiencia del usuario.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00bfReact Testing Library funciona con TypeScript?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u00ed. <strong>React Testing Library<\/strong> es totalmente compatible con TypeScript. Incluye tipos para mejorar la productividad y evitar errores en tiempo de compilaci\u00f3n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Consulta tambi\u00e9n mi gu\u00eda:<br><a href=\"https:\/\/martagonzalez.dev\/blog\/typescript-primeros-pasos\/\" target=\"_blank\" rel=\"noreferrer noopener\">TypeScript: Primeros pasos<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00bfNecesito Jest para usar React Testing Library?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No es obligatorio, pero s\u00ed muy recomendable. Jest ofrece mocks, assertions, snapshots y cobertura de c\u00f3digo, convirti\u00e9ndose en el complemento perfecto para <strong>React Testing Library<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-yoast-seo-estimated-reading-time yoast-reading-time__wrapper\"><span class=\"yoast-reading-time__icon\"><svg aria-hidden=\"true\" focusable=\"false\" data-icon=\"clock\" width=\"20\" height=\"20\" fill=\"none\" stroke=\"currentColor\" style=\"display:inline-block;vertical-align:-0.1em\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 24 24\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z\"><\/path><\/svg><\/span><span class=\"yoast-reading-time__spacer\" style=\"display:inline-block;width:1em\"><\/span><span class=\"yoast-reading-time__descriptive-text\">Tiempo estimado de lectura: <\/span><span class=\"yoast-reading-time__reading-time\">3<\/span><span class=\"yoast-reading-time__time-unit\"> minutos<\/span><\/p>\n\n\n\n<ul class=\"wp-block-yoast-seo-related-links yoast-seo-related-links\">\n<li><a href=\"https:\/\/martagonzalez.dev\/wp\/blog\/testing-exploratorio-una-guia-integral\/\">Testing Exploratorio: Una Gu\u00eda Integral<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/martagonzalez.dev\/wp\/blog\/diseno-basado-en-datos-impulsando-la-innovacion-con-perspectivas-cuantitativas\/\">Dise\u00f1o basado en datos: Impulsando la innovaci\u00f3n con perspectivas cuantitativas<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/martagonzalez.dev\/wp\/blog\/dot-coding-que-es-y-como-aplicarlo-en-el-desarrollo-web\/\">Dot Coding: Qu\u00e9 es y c\u00f3mo aplicarlo en el desarrollo web<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/martagonzalez.dev\/wp\/blog\/mejores-practicas-para-pruebas-de-integracion-con-jest-y-react\/\">Mejores pr\u00e1cticas para pruebas de integraci\u00f3n con Jest y React<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/martagonzalez.dev\/wp\/blog\/introduccion-a-jest-aprendiendo-las-bases-de-las-pruebas-en-javascript\/\">Introducci\u00f3n a Jest: Aprendiendo las bases de las pruebas en JavaScript<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>En este art\u00edculo, nos sumergiremos en el mundo de las pruebas en React, explorando qu\u00e9 es React Testing Library, c\u00f3mo funciona y c\u00f3mo podemos aprovecharla al m\u00e1ximo para asegurar la calidad de nuestras aplicaciones.<\/p>\n","protected":false},"author":1,"featured_media":15671,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"mg_rating_sum":0,"mg_rating_count":0,"mg_rating_average":0,"footnotes":""},"categories":[82,79,53],"tags":[173,169,174,175,172,171,137,167,170,93,101,168,176],"class_list":["post-12046","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-programacion","category-react","tag-archivos-de-prueba-de-componentes","tag-calidad-del-software","tag-cobertura-de-codigo","tag-enzyme","tag-escribir-pruebas","tag-interfaz-de-usuario","tag-jest","tag-pruebas-en-react","tag-pruebas-exhaustivas","tag-pruebas-unitarias","tag-react","tag-react-testing-library","tag-typescript"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ 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