Unit Testing Configuration Properties and Profiles Overview This skill provides patterns for unit testing bindings, environment-specific configurations, and property validation using JUnit 5. Covers testing property name mapping, type conversions, validation constraints, nested structures, and profile-specific configurations without full Spring context startup. Key validation checkpoints: - Property prefix matches between and test properties - Validation triggers on classes with invalid values - Type conversions work for Duration, DataSize, collections, and maps When to Use - Testing property…