Unit Test Parameterized

Generates JUnit 5 parameterized tests so you can run the same test logic against multiple input combinations without duplicating code. Covers @ValueSource for primitives and strings, @CsvSource for tabular test cases, @MethodSource when you need complex objects, and @EnumSource for enum exhaustiveness checks. Good for boundary value testing, email validation with known good and bad inputs, that sort of thing. The examples show readable patterns with custom display names and proper assertion structure. Watch out for the parameter count matching requirement and remember @MethodSource factory methods must be static. Honestly just saves you from writing fifteen nearly identical test methods when you could write one with fifteen parameter sets.