Java Engineering Notes

JUnit 5 & Mockito · All chapters

Every chapter,
in reading order.

Nine modules, from what a unit test is to verifying how a class talks to its dependencies: JUnit 5 first, then mocking with Mockito. It assumes Core Java. Tick a chapter when you finish it; the home page will pick up where you left off.

19 ChaptersJUnit 5 · Mockito 5Assertions, Parameterized Tests, Mocks & Spies0 of 19 completed

Module 1

Foundations

3 articles

01Unit Testing Roadmap: JUnit 5 and Mockito3 min read

02What Unit Testing Is: Unit, Integration and Functional Tests5 min read

03JUnit 5 Architecture: Platform, Jupiter and Vintage5 min read

Module 2

Writing Tests

2 articles

04Test Lifecycle, @TestInstance and Parallel Execution6 min read

05Assertions and Testing Exceptions7 min read

Module 3

Extending JUnit

1 article

06Extensions11 min read

Module 4

Repeated & Parameterized Tests

3 articles

07@RepeatedTest5 min read

08Parameterized Tests Part 1: Single and Multiple Values6 min read

09Parameterized Tests Part 2: Objects and Complex Data5 min read

Module 5

Assumptions & Selecting Tests

3 articles

10Assumptions3 min read

11Tagging and Filtering3 min read

12Test Suites, and Suites vs Tags7 min read

Module 6

Dynamic Tests

1 article

13Dynamic Tests with @TestFactory6 min read

Module 7

Mockito Fundamentals

2 articles

14Mock vs Stub vs Spy7 min read

15Mockito Architecture: How Mocks, Stubs and Spies Work8 min read

Module 8

Mockito with JUnit 5

2 articles

16@Mock, @Spy and @InjectMocks9 min read

17@Mock as a Constructor or Method Parameter4 min read

Module 9

Stubbing & Verification

2 articles

18Stubbing: Matchers, Static and Dynamic Answers8 min read

19Verification10 min read