Mockito & Junit 5 Mastery Complete Java Testing Course

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Free Download Mockito & Junit 5 Mastery Complete Java Testing Course
Published 11/2025
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz
Language: English | Size: 4.70 GB | Duration: 6h 58m
Learn JUnit 5 & 4, Mockito 3, Mocking, Stubbing, Test Doubles, Behavior Verification, BDD, ArgumentCaptor & Matchers.


What you'll learn
Understand the fundamentals of Unit Testing in Java.
Learn and implement different Test Doubles: Fake, Dummy, Stub, Mock, and Spy.
Set up Java projects with JUnit 5 and JUnit 4 using Maven.
Master Mockito 3 for creating mocks, stubs, and spies.
Use Mockito annotations, extensions, and runners for efficient testing.
Apply stubbing techniques including when(), thenReturn(), doReturn(), and void methods.
Handle common Mockito misuse and exceptions like UnfinishedStubbingException and PotentialStubbingException.
Perform behavior verification to ensure correct interactions with mocks and spies.
Use ArgumentCaptor and Argument Matchers effectively for real-world test scenarios.
Apply BDDMockito and Behavior-Driven Development practices in unit tests.
Requirements
Basic knowledge of Java programming.
Understanding of object-oriented concepts in Java.
A working Java development environment (JDK, IDE like Eclipse/IntelliJ, Maven).
No prior experience with Mockito or JUnit is required - beginners are welcome.
Description
Great Unit Tests turn good developers into exceptional developers.And nothing strengthens your Java testing skills more than mastering JUnit and Mockito together.In this course, you will learn Real-World Java Unit Testing from the ground up - starting with the fundamentals of Unit Testing and Test Doubles, all the way to advanced mocking, stubbing, behavior verification, BDD, ArgumentCaptor, Argument Matchers, and much more.This course is designed to take you from absolute beginner to confident professional in a clear, simple, and hands-on way.Whether you're preparing for a job interview, writing tests at work, or improving code quality in your projects - this course will give you all the skills you need.What You Will LearnLearn Unit Testing with clarity and simplicityUnderstand all types of Test Doubles (Fake, Dummy, Stub, Mock, Spy)Master Mockito from basics to advanced usageWrite clean, structured, professional testsAvoid common Mockito mistakes and misuseBuild confidence to work in real industry-level Java projectsLearn both JUnit 5 and JUnit 4 setupsApply Behavior-Driven Development (BDD) with MockitoThis course is structured in a practical, step-by-step teaching style, ensuring every concept is clearly explained, demonstrated in code, and reinforced with examples.Course HighlightsYou will progress through multiple stages of Mockito and JUnit mastery - starting with theory, then applying each concept in real Java code.Unit Testing FoundationsIntroduction to Unit TestingIntroduction to Test DoublesMaven Setup with JUnit 5Test Doubles Without MockitoFake Test DoubleDummy Test DoubleStub Test DoubleSpy Test DoubleMock Test DoubleProject SetupProject setup with JUnit 5 and MavenProject setup with JUnit 4 and MavenMockito EssentialsWhat is Mocking?Introduction to MockitoCreating Fake, Dummy, Stub, Mock, and Spy using MockitoCreating Mocks using AnnotationsMockito Extension (JUnit 5)MockitoJUnitRunner (JUnit 4)MockitoAnnotations.initMocksMockito RuleStubbing MethodsWhat is Stubbing?Stubbing with when() and thenReturn()Stubbing with doReturn() and when()Stubbing multiple calls of the same methodStubbing void methodsMockito Misuse (Real-World Errors)UnfinishedStubbingExceptionPotentialStubbingExceptionYou will learn exactly why these errors happen and how to fix them.Behavior VerificationVerify simple interactionsVerify number of method invocationsVerify no interactionsVerify order of interactionsVerify min/max invocation countException HandlingExceptions in non-void methodsExceptions in void methodsArgumentCaptorArgumentCaptor without annotationsArgumentCaptor using annotationsSpy Deep DiveWhat is Spy in Mockito?Spy using annotationsStubbing a SpyVerifying Spy behaviorBehavior-Driven Development (BDD)Introduction to BDDStubbing with BDDMockitoBehavior verification with BDDMockitoException handling in BDDArgument MatchersIntroduction to MatchersType MatchersSpecific Type MatchersCollection MatchersString MatchersCommon Matcher MisuseWhy This Course?Covers everything from basics to advanced Mockito usageReal project scenarios and examplesClear explanations and step-by-step approachBoth JUnit 4 and JUnit 5 coveredIncludes BDD, verification, argument capturing, and exception handlingIdeal for beginners, students, and working professionalsStart Learning NowEnroll today and begin your journey toward becoming a confident, highly skilled Java tester using JUnit and Mockito.
Java developers who want to master unit testing.,Software engineers preparing for technical interviews involving testing.,Beginners who want to learn JUnit 5, JUnit 4, and Mockito from scratch.,Professionals looking to improve code quality through effective unit tests.,Developers interested in BDD, behavior verification, and advanced mocking techniques.
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