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Great developers will tell you that testing is as much a state of mind as a collection of tools and practices.     The Art of Unit Testing, Third Edition   takes you below the surface and understand how unit testing can transform the way you deliver and maintain software. Now with examples in JavaScript, this new edition has been updated to reflect the characteristics of a modern codebase, including async and modularized, distributed services. The practices and patterns you'll learn can also be easily applied to other languages, including C#, Java, and Python.    about the book    The Art of Unit Testing, Third Edition   guides you step by step from your first simple unit tests to building complete test sets that are maintainable, readable, and trustworthy. Now with examples using JavaScript and Node, this expanded third edition teaches you to write unit tests for async and observable code, as well as methods of faking functions, modules and refactorings. You'll get to grips with complex subjects such as mocks and stubs, explore how to handle tricky legacy codebases, and save yourself time with tests that function for both frontend and backend applications.     The Art of Unit Testing, Third Edition   is an essential guide for any unit tester who wants to feel confident writing code that's easier to create, maintain, and adapt.","brand":"WoB","offers":[{"title":"GB \/ NEW \/ GARDNERS","offer_id":49744319742225,"sku":"NGR9781617297489","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51040372261137,"sku":"NIN9781617297489","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":51435224662289,"sku":"GOR014276760","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"US \/ GOOD \/ SBYB","offer_id":51907231547665,"sku":"CIN1617297488G","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"US \/ VERY_GOOD \/ SBYB","offer_id":53500408856849,"sku":"CIN1617297488VG","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1617297488.jpg?v=1781272726"},{"product_id":"javascript-book-andy-vickler-9781955786010","title":"Javascript","description":null,"brand":"WoB","offers":[{"title":"US \/ WELL_READ \/ SBYB","offer_id":50227743195409,"sku":"CIN1955786011A","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1955786011.jpg?v=1750804862"},{"product_id":"ecmascript-6-book-daniel-green-9781519789129","title":"ECMAScript 6","description":null,"brand":"WoB","offers":[{"title":"- \/ - \/ -","offer_id":51033231163665,"sku":"","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51033233359121,"sku":"NIN9781519789129","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1519789122.jpg?v=1751180970"},{"product_id":"javascript-book-andy-vickler-9781955786225","title":"Javascript","description":"\u003cp\u003eThe market is filled to the brim with books that claim to have the secret recipe to help you learn JavaScript faster. However, few live up to the promises they make. This book is written in a practical and easy way and offers theory and plenty of practical material. There are explanations and practical examples that help beginners learn fast. Instead of diving deeper into lengthy and boring texts, I tried to get straight to the point for each topic.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eI have defined each topic and added an easy to understand explanation to help you understand the concepts and the main keywords that will do the magic in the code. Coupled with the explanation, you will find a code snippet for each topic that is custom written and has been tested for errors. You can copy them and load them up on a web browser to see the results, or you can simply edit them and customize them to understand them well. The choice is yours. \u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThis book is written in an orderly form with beginner-level topics and progressively tougher topics later on. Here is a rundown of the contents of the book.\u003c\/p\u003e\u003cp\u003e- JavaScript Use Cases\u003c\/p\u003e\u003cp\u003e- Variables\u003c\/p\u003e\u003cp\u003e- Constants\u003c\/p\u003e\u003cp\u003e- Prompts\u003c\/p\u003e\u003cp\u003e- Conditionals\u003c\/p\u003e\u003cp\u003e- Arrays\u003c\/p\u003e\u003cp\u003e- Strings\u003c\/p\u003e\u003cp\u003e- JavaScript For and While Loops\u003c\/p\u003e\u003cp\u003e- Functions\u003c\/p\u003e\u003cp\u003e- Objects\u003c\/p\u003e\u003cp\u003e- Classes\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eNow is your chance to delve into Javascript basics with this easy to follow guide. 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