Parameterized Unit Tests with JUnit 5

Overview

Provides patterns for parameterized unit tests in Java using JUnit 5. Covers @ValueSource, @CsvSource, @MethodSource, @EnumSource, @ArgumentsSource, and custom display names. Reduces test duplication by running the same test logic with multiple input values.

When to Use

• Writing JUnit tests with multiple input combinations
• Implementing data-driven tests in Java
• Running same test with different values (boundary analysis)
• Testing multiple scenarios from single test method

Instructions