Test-Driven Development in Java, JUnit, and Mockito

Overview

Master TDD in Java using JUnit - write tests first, implement code, and refactor. Learn test doubles with the Mockito framework to isolate components. Create cleaner, more maintainable code while reducing bugs and improving development efficiency.

Syllabus

Course 1: Foundations of TDD in Java with JUnit: The Principles
Course 2: Red-Green-Refactor: Practicing TDD with Java & JUnit
Course 3: Isolating Dependencies with Test Doubles using JUnit & Mockito
Course 4: Refactoring by Leveraging Tests with Java & JUnit

Courses

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4 hours
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This course introduces Test-Driven Development (TDD) for Java projects, covering the Red-Green-Refactor workflow, TDD mindset, and setup with JUnit. Learn best practices like SOLID principles and dependency injection, and explore TDD's impact on code quality and speed compared to traditional approaches.
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3 hours
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This course focuses on practicing the core TDD workflow: "Red-Green-Refactor." You'll write failing tests (Red), implement code to pass them (Green), and refactor while keeping tests passing (Refactor). No new concepts are introduced—just hands-on practice with various requirements to sharpen your TDD skills.
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3 hours
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Discover the pivotal role of test doubles in modern software testing. This introductory course will guide you through the essentials of dummies, stubs, spies, mocks, and fakes. Learn how these powerful tools help you isolate units under test, control behavior, and build reliable, fast, and maintainable tests. Step into the world of test doubles and elevate your software development skills.
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3 hours
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This course focuses on the Refactor step in TDD, teaching developers to spot code smells and resolve them through refactoring. Using real-world examples, you'll identify common issues, apply refactoring techniques, and ensure functionality is preserved with existing tests.