Revision 520: Unit-Testing / Testing Library

from Working Draft · host Vanessa Otto, Peter Kröner, Hans Christian Reinl, Stefan Baumgartner, Christian »Schepp« Schaefer

Episode metadata supplied by the publisher feed · Published Mar 9, 2022

What this episode covers

Das Thema Testing begleitet uns seit vielen Jahren. Glücklicherweise scheint es immer leichter zu werden. Joe Ray Gregory (Twitter / Website), Senior Software Engineer und Trainier bei workshops.de, bringt uns diesmal das Framework Testing Library mit. Psst, Geheimtipp: Joe verrät uns, dass es aktuell Early Bird Tickets für die Vue.js Konferenz in Berlin am 22. September gibt. UNSER SPONSOR Diese Folge wird gesponsert von lemon.markets, einem FinTech aus Berlin, das eine Trading API für Developer anbietet. Mit lemon.markets können über 8000 Aktien und ETFs per API gehandelt werden. Neben der Verwaltung des eigenen Portfolios können auch aktuelle und historische Kursdaten abgerufen werden. Developer in der lemon.markets Community automatisieren ihre Sparpläne, bauen sich eigene Integrationen in Tools wie Telegram und Slack oder entwickeln ihre eigenen Trading Apps oder Bots. In der lemon.markets Developer Community tauschen sich zudem schon über 500 Entwickler:innen zu allen Fragen rund um die Trading API und den Aktienmarkt aus. Weitere Informationen zum Produkt und der Firma gibt es hier. SCHAUNOTIZEN [00:01:36] UNIT-TESTING / TESTING LIBRARY Die Testing Library von Kent C. Dodds und anderen Beitragenden ist eine Familie von Bibliotheken, um Best Practices in das Testen zu bringen. Sie ist framework-agnostisch und kann daher mit Vue, React und Co. verwendet werden. Sie funktioniert mit Jest, Cypress und vermutlich auch Vitest (Obacht: Alpha!), aber auch alleinstehend benutzt werden. Im Laufe der Revision geht Joe darauf ein, was die Testing Library eigentlich ist, warum man sie nutzen sollte und wie man sie einsetzt. Dabei geht er auch darauf ein, dass es keine aktive Mitarbeit von seitens Facebook (Meta) seit Jahren mehr an Jest gibt. Außerdem gäbe es bei Jest das Problem des fehlenden ESM Supports. Im weiteren Verlaufen gehen Hans, Vanessa und Joe auch auf die Testing Pyramide und Testing Trophy ein. Besonders spannend bei der Testing Library sind die Guiding Principles. SONSTIGE LINKS * Playwright, der Nachfolger von Puppeteer * https://conf.vuejs.de/ * https://workshops.de/ VERWANDTE REVISIONEN * Revision 462: Jest * Revision 442: „Next Level“-End-to-End-Testing * Revision 436: Frontend Unit-Testing * Revision 375: Frontent-Testing

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