Spring AI: Testing MCP Tools

Testing Model Context Protocol (MCP) tools in Spring AI is essential to ensure that tools are correctly registered, discoverable, and…

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JUnit Print Assertion Results Example

JUnit assertions are designed to remain silent on success and report output only when a failure occurs. This behaviour helps…

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An Introduction to @ClassTemplate in JUnit 5

JUnit 5 offers several extension points that allow developers to customize how tests are discovered and executed. One of these…

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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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Getting Started with Spring RestTestClient

Testing REST APIs in Spring has traditionally used several tools, such as MockMvc, WebTestClient, and TestRestTemplate, each offering its own…

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Testing Micrometer Metrics in Spring Boot Applications

Micrometer is a metrics collection library that provides a vendor-neutral API for instrumenting applications. In a Spring Boot environment, it…

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Taming Legacy Code: Refactoring Strategies Every Java Developer Should Know

Legacy code is often described as code without tests, but in reality, it’s any code that is hard to understand,…

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Test Everything: Advanced Unit and Integration Testing with JUnit 5

Software testing has evolved far beyond the simple “write a test for each function” mindset. With modern architectures—microservices, cloud deployments,…

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The Mocking Playbook: How to Fake It Right in Tests (Without Breaking Your Code)

Testing is the backbone of reliable software, and mocking is one of its sharpest tools—when used correctly. Whether you’re unit…

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