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- Hello, and welcome to this course

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on Test-Driven Development
for JavaScript LiveLessons.

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I'm Andy Olsen, and
I'll be your instructor.

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Testing is obviously an
important ingredient,

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if you're gonna create
high-quality applications.

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If you're familiar with
traditional languages

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such as Java and C# and so on,

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you've probably written many tests

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over the years using libraries

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such as JUnit, NUnit and XUnit.

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But what about JavaScript?

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How do you write effective
tests for JavaScript?

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What does it even mean
to test JavaScript code?

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Well, that's what this
course is all about.

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There are 12 lessons altogether.

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The first three lessons introduce Jest,

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which is the most popular
testing framework in JavaScript.

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Lesson 4 describes how to
test asynchronous code,

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and Lesson 5 and 6 cover Mocking.

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Lesson 7 discusses best practices

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for test driven development

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And Lesson 8 takes a closer look

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at how to test JavaScript code running

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in the web user interface.

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Lessons 9 and 10 focus on how
to test React applications.

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And Lessons 11 and 12 cover Angular.

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So, just a few words about
myself before we dive in.

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I'm a freelance developer and instructor.

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I live in Swansea in South Wales.

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I've been working in IT since 1986.

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I started as a C programmer,

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and I picked up various other
languages along the way,

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C++, Java, C#, JavaScript obviously,

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Python, Rust, and well,
who knows what comes next?

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I love teaching all this stuff

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and I really appreciate the chance

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to put together these video courses.

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It's quite a lot of work,

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but it's very fulfilling

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and it's a lot of fun
and the people are great.

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So with that said, I hope
you enjoy the course.

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Let's get started.