Unit Testing Legacy Code in Java SE 8

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Jim Weaver

2:08:08

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1. Course Overview

1. Course Overview.mp4

01:30

2. Introducing Our Legacy System

1. Module Overview.mp4

00:33

2. Legacy Code as Untested Code.mp4

03:19

3. Our Legacy System.mp4

03:11

4. Testing Previously Untested Code.mp4

02:41

5. Module Summary.mp4

00:48

3. Understanding the Role of Different Types of Tests

1. Module Overview.mp4

00:30

2. Types of Tests.mp4

05:27

3. Demo - Cloning and Building ERServer.mp4

01:47

4. Demo - Unit Test.mp4

02:33

5. Demo - Component Test.mp4

03:53

6. Demo - Acceptance Test.mp4

04:06

7. Demo - End-end Test.mp4

02:43

8. Testing Strategy for ERServer.mp4

01:04

9. Module Summary.mp4

00:37

4. Testing Code with Problematic Dependencies

01. Module Overview.mp4

00:54

02. The Dependencies Problem.mp4

01:51

03. Understanding Test Doubles.mp4

02:16

04. Understanding Dependency Injection.mp4

02:02

05. Dependency Breaking Techniques.mp4

01:31

06. Demo - Pass Null.mp4

06:54

07. Demo - Expose Static Method.mp4

01:55

08. Demo - Parameterize Constructor.mp4

05:46

09. Demo - Extract Interface.mp4

06:54

10. Demo - Subclass and Override Method.mp4

07:03

11. Demo - Wrap API.mp4

06:18

12. Demo - Revisiting the Dosing Calculator Test Problem.mp4

03:13

13. Module Summary.mp4

01:11

5. Testing Hard to Understand Code

1. Module Overview.mp4

00:48

2. Working with Hard to Understand Code.mp4

02:53

3. Tour of the Divergence Controller.mp4

08:11

4. Demo - Documenting and Clarifying Code.mp4

02:36

5. Demo - Extract Method.mp4

04:05

6. Demo - Sprout Method.mp4

04:21

7. Demo - Sprout Class.mp4

04:18

8. Demo - Breakout Method Object.mp4

07:32

9. Module Summary.mp4

00:43

6. Expanding Your Skills

1. Module Overview.mp4

00:37

2. Our Accomplishments with ERServer.mp4

04:03

3. Practicing on the Divergence Controller.mp4

03:51

4. Additional Resources and Summary.mp4

01:40

Description

Untested code can be difficult and risky to maintain. This course will teach you techniques to get existing code under test as you work on it, without risky rewrites or redesigns.

What You'll Learn?

One of the biggest challenges developers encounter in their career is having to maintain an existing codebase with little or no tests and unclear, tangled code. In this course, Unit Testing Legacy Code in Java, you will learn techniques to get a legacy and untested Java application, a small but realistic Java application to provide services to a hospital emergency room, under test incrementally as you work on it. First, you will learn about different types of tests and test doubles that can be applied to create a safety net for the application gradually. Next, you will discover crucial dependency-breaking techniques that will allow you to create seams to provide test doubles without disrupting the code. Finally, you will explore ways to deal with hard to understand code, improving the clarity as you work, and techniques to leverage new, tested code from hard to understand code. When you are finished with this course, you will have the knowledge to efficiently handle untested systems you’ve become responsible for.

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Java

Unit Testing

Jim Weaver

Instructor's Courses

Jim Weaver is a software developer with experience in many languages and platforms. He has worked in and led teams in many industry verticals including Defense, Leasing, Energy, and Healthcare. Jim has extensive experience with unit and acceptance testing techniques and tools, and is one of the original authors of JWebUnit, an open-source web application testing API and framework.

Pluralsight

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Pluralsight, LLC is an American privately held online education company that offers a variety of video training courses for software developers, IT administrators, and creative professionals through its website. Founded in 2004 by Aaron Skonnard, Keith Brown, Fritz Onion, and Bill Williams, the company has its headquarters in Farmington, Utah. As of July 2018, it uses more than 1,400 subject-matter experts as authors, and offers more than 7,000 courses in its catalog. Since first moving its courses online in 2007, the company has expanded, developing a full enterprise platform, and adding skills assessment modules.