Getting Started with JUnit 5 Testing in Micronaut

Micronaut makes testing Java applications straightforward with native JUnit 5 integration. Its lightweight dependency injection, embedded server support, and simple…

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Using @MockitoSpyBean in Spring

Testing is an essential part of building reliable Spring Boot applications. Often, we need to observe or modify the behaviour…

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Mocking AmazonSQS in Unit Tests

Unit tests should be fast, isolated, and deterministic. When your Java application interacts with AWS SQS, you want to avoid…

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Mocking Logger and LoggerFactory Example

1. Introduction The SLF4J library provides the Logger interface and LoggerFactory utility class to create a logger instance for a…

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Mockito Stub Getter & Setter Example

Mockito offers a straightforward approach to mocking method calls in unit tests, helping us isolate components and validate their behavior…

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Mocking JDBC Components in Unit Tests with Mockito

Unit testing JDBC-based code can be challenging due to its reliance on live database interactions. Using Mockito, we can mock…

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Mockito vs. Mocking the JVM: Bytecode Manipulation for Ultimate Test Control

Mockito is the go-to mocking framework for Java developers, but it has limits—it can’t mock final classes, static methods, or…

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How to Handle Generic List Matchers in Mockito

Mockito is a widely used Java library for creating mock objects in unit tests. Mocking enables us to replace the…

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Mock JWT Decoding with JwtDecoder in JUnit Tests

JSON web tokens (JWTs) are widely used for microservices and Spring security authentication. When testing Spring applications, mocking JWT decoding…

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