Learn by Example: JUnit

Name: Learn by Example: JUnit
Rating: 4.0 (145 reviews)

A comprehensive guide to JUnit with 25 solved examples

Created byLoony Corn

Last updated 12/2016

English

What you'll learn

Test functionality of Java applications using JUnit
Write test cases using Assertions and Matchers
Create mock objects to test interdependent classes
Run multiple test classes under different conditions

Course content

8 sections • 26 lectures • 2h 46m total length

You, This Course and Us1:44
Let's start with an introduction. We'll understand what JUnit can do for us and what's covered in the course.

Example 1 : The @Test Annotation : Writing a test11:42
Write your very first JUnit test and understand what is happening when a test is run.
Example 2: The Anatomy of a Test Method7:38
What are the different things you need to do in a test? Every test is made up of 3 basic steps - understand this to test any class.
Example 3: Assertions8:58
The Assert class provides many methods to check different conditions against different types of objects.

Example 4: assertThat and Matchers6:27
Make complex checks more readable with the help of matchers.
Example 5: Types of Matchers7:56
Understand the different methods available in the Matchers class
Example 6: Using Matchers for Debugging4:52
Error messages for Matchers are very verbose and help with debugging!
Example 7: Implementing a Custom Matcher7:35
Implement a custom matcher, when you have a special requirement not already handled!

Example 10: The @RunWith Annotation14:35
JUnit allows you to specify different Test Runners, each with different ways to control how your tests are run
Example 11: Aggregating tests in a Suite5:12
Run multiple tests at at time.
Example 12: Parameterized Tests9:26
Run tests with different values for certain parameters.
Example 13: Running Subsets of Tests7:00
Example 14: Theories8:14
Run tests with different sets of assumptions.

Requirements

Experience in Java programming and familiarity with using Java frameworks

Description

JUnit is one of a family of unit testing frameworks all built with the same philosophy. To abstract the programmer away from the mechanics of running tests. You concentrate on testing the functionality of the application, and the logistics of running, monitoring and displaying results is taken care of by the framework.

In this course, we’ll be writing simple tests using all the different features of JUnit tests. Using 25 solved examples, you'll get a complete overview of the JUnit framework and all the functionality within.

What's covered?

1) Assertions : the fundamental component of any Junit test
2) Matchers : Write complicated tests in a very readable way. Implement your own custom matchers
3) Assumptions : Check for preconditions and external dependencies

4) Fixtures : Setup and Cleanup for your tests

5) Runners : Understand what goes on under the hood in JUnit. Use different runners to run multiple test classes with different conditions and parameters
4) Mockito : Understand the concept of mock objects and use the Mockito framework to run tests on interdependent classes.

Who this course is for:

Yep! Software Engineers who are looking to learn how to test Java applications
Yep! Students learning Java who want to get familiar with testing

Learn by Example: JUnit

What you'll learn

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Course content

You, This Course and Us1 lecture • 2min

Getting Started with JUnit Tests and Assertions3 lectures • 28min

Granular Checks with Matchers4 lectures • 27min

Assumptions1 lecture • 7min

Fixtures1 lecture • 8min

Working with Different TestRunners5 lectures • 44min

Controlling Test Behavior with Rules9 lectures • 40min

Mockito : The Mock Object Framework2 lectures • 10min

Requirements

Description

Who this course is for: