Master Unit Testing Java Spring Boot REST API Application in One Shot | Full Course

Let's become expert of unit testing java spring boot rest api application using Junit , AssertJ , Mockito , H2Database , Springframework test package libraries / frameworks. This is a full one shot course on software unit testing java spring boot applications. In this tutorial, Cloud Vendor API is further evolved and junit test cases are written for all 3 layers i.e. controller layer , service layer and repository layer. All layers are unit tested using junit, assertj, mockito, h2database and springframework test package . Code coverage method is also demonstrated in this session. Software testing expected from java developers is explained here.
Unit Testing is mandatory task to perform in java projects from every Java developer. Unit testing java projects helps to enhance java code quality and prevents java spring boot application from bugs. This tutorial will be helpful for backend developers and also for full stack developers.
Some notes -
JUNIT -
Unit testing framework for Java and its frameworks.
JUnit 5 is the next generation of JUnit.
The goal is to create an up-to-date foundation for developer-side testing on the JVM. This includes focusing on Java 8 and above, as well as enabling many different styles of testing.
AssertJ -
AssertJ is a Java library that provides a rich set of assertions and truly helpful error messages.
It improves test code readability, and is designed to be super easy to use within your favorite IDE.
Mockito -
Mockito is a mocking framework for Java.
It lets you write beautiful tests with a clean & simple API.
The tests are very readable and they produce clean verification errors.
Mockito 3.x requires Java 8 or above.
H2 Database -
H2 Database is Java SQL Database
Very fast and open source
Used as In-Memory Database
Spring Boot can auto-configure embedded H2 databases. 
Key Annotations -
@SpringBootApplication
@Test
@DataJpaTest
@WebMvcTest
@Mock
@MockBean
@Autowired
@BeforeEach
@AfterEach
and more...
Spring Boot Session Links are given below -
Playlist for Spring Boot How To tutorial is -
GitHub link for CloudVendorApi code -

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#thinkconstructive #eshapuri #junit #junit5 #springboot

Chapters
00:00:00 Welcome
00:01:33 What is Unit Testing and Importance of Unit Testing
00:02:11 Java Spring Boot Project Design Overview
00:04:39 What is Junit ?
00:06:13 What is AssertJ ?
00:08:20 What is Mockito ?
00:09:26 What is H2 Database ?
00:11:17 Cloud Vendor API Software Project Overview
00:13:02 JUNIT Test Package Structure
00:21:54 Repository Layer Test Cases : Java Spring Boot REST API
00:44:23 Service Layer Test Cases : Java Spring Boot REST API
01:09:54 Code Coverage using Intellij for Java REST API Repository Layer and Service Layer
01:12:59 Controller Layer Test Cases : Java Spring Boot REST API
01:36:32 Code Coverage using Intellij for Java REST API Controller Layer
01:39:00 Summary
01:40:25 Thank You

Queries
how to write unit test in java spring boot
how to write unit test in java spring boot rest
what is junit5 library
what is assertj library
what is mockito library
how to use h2database
what is spring boot test
how to write test case in java spring boot
how to test controller layer code
how to test service layer code
how to test repository layer code
how to check code coverage
how to check code coverage of java spring boot application
how to verify code coverage of java project
how to run junit test

[ThinkConstructive]

This is a FULL Course for Unit Testing Spring Boot REST API application using JUNIT5, AssertJ, Mockito, H2Database and Spring test frameworks. All 3 layers will be unit tested for CloudVendorAPI application and code coverage will also be demonstrated. This is a fully practical demonstration, hence, you will get to learn real time coding and explanation both together in this session.
This session addresses the REAL PAIN point of Java Spring Boot developers i.e. writing Unit Test Cases.
Please attend the full session to get complete benefit from this course.
Happy Learning 😊
Cheers,
Esha

[professionalyoutubevideowa]

This is the best course on Spring Unit testing. Concise and straight to the point!!

[entnfui]

i watch many videos on youtube .but dont find video content like your.tx so much provide such a good content

[sivakumarchekuri]

After watching this session, I am very confident to write unit testcases for my projects. Thanks for your excellent session on JUnit

[donotdisturb]

i have no words to describe how much i love the way you explained this, you made it so simple and easy to follow and understand that even as a beginner with no idea about unit testing and your previous cloud vendor project, i was able to understand and connect as to how this would be correlated to my project.

[mukesh]

Thanks for this video. This is best junit testing video I ever found.

[dias]

Thank you, Esha, for this fantastic content!

[mithleshpuri]

Brilliant video. Keep teaching us. Thank you 🙏

[pronoob]

Best Unit Testing Video on YouTube, Thank you

[lancepriyan]

Thanks for your explanation. It's easy to understand JUnit, AssertJ, and Mockito.

[lancepriyan]

I'm suggesting that you create a video on the Liquibase framework with Spring Boot, Kafka with Spring, and test cases with Spring Boot Kafka Test.

[jayjoshi]

The explanation of each test case is awesome. I was searching for the same bundle of all test cases with JUnit 5, including all CRUD operations.
It could have been more helpful than it is already, if the methods like andDo(), andExpect(), explanation of the ObjectMapper code block for mapping cloudVendor obj to Json stirng was taken deeply.
But still much appreciated for you efforts and learned a lot from this session.
Thanks a lot ma'am!

[mithleshpuri]

Awesome content. Great to learn spring boot from your sessions. Thanku 🙏

[ParthPuri]

Extremely helpful full of knowledge … loads of details are shared and code is very useful…thanks a ton for sharing this …

[kartikmerotha]

I was looking for this video from long time...
You clear all doubts..

[rajeshpamuri]

Mam never seen like this tutorial
From YouTube

[atharvsingh]

I really appreciate your crucial efforts for the benefit of java coding community. My respect 🙏 to you mam. You are our GURUMA

[Moonaz]

Thank you so much for such an amazing teaching!

[ahmedouyahya]

Hats off.
Really Awesome content. Thank you so much.
You got one subscriber here.

[xbputje]

Thank u for sharing thes excellent course, i just have a question, i waanna know the difference between MockBean and Mock annotation why we used mockbean to mock the service why we didnt use mock