This skill provides patterns for unit testing Jakarta Bean Validation annotations and custom validator implementations using JUnit 5. It covers testing built-in constraints (@NotNull, @Email, @Min, @Max), creating custom validators, cross-field validation, validation groups, and parameterized testing scenarios.
ValidatorFactory not found: Ensure jakarta.validation-api and hibernate-validator are on classpath.
Custom validator not invoked: Verify @Constraint(validatedBy = YourValidator.class) is correctly specified.
Provides patterns for unit testing Jakarta Bean Validation (@Valid, @NotNull, @Min, @Max, etc.) with custom validators and constraint violations. Validates logic without Spring context. Use when ensuring data integrity and validation rules are correct. Source: giuseppe-trisciuoglio/developer-kit.