March 2025
Intermediate to advanced
480 pages
13h 51m
Spanish
Content preview from Estrategias de JavaScript completas
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Capítulo 7. Pruebas de backend
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En este punto del proyecto, tienes bastante código. Hay servicios, controladores e integraciones. Aunque tú y el equipo haréis todo lo posible por no introducir regresiones en el código (cuando una funcionalidad que antes funcionaba se rompe por un cambio no relacionado), eso ocurrirá en algún momento, y es normal a medida que crece el código. Por eso escribes pruebas para la funcionalidad principal de la aplicación.
En el backend, probarás cosas como que los errores se llamen en los escenarios correctos, que los datos se devuelvan en el formato correcto y que se llamen a los métodos correctos con los parámetros correctos. Escribir pruebas unitarias como éstas te ayudará a evitar regresiones, a comprender cómo debe funcionar el código y a hacer que el código sea más fácil de mantener porque estás escribiendo un código más conciso y modular.
En este capítulo trataré:
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Compromisos entre tener pruebas y no tenerlas
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Cómo escribir pruebas con Jest
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La importancia de los datos simulados
Independientemente de si estás empezando un proyecto desde cero o heredando uno, las pruebas pueden ser de gran ayuda. También es un buen momento para colaborar con el equipo de Producto sobre el estado actual y futuro del producto. Escribir pruebas a menudo planteará preguntas más detalladas sobre lo que se espera exactamente de alguna funcionalidad. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.