What is Json assertions in Laravel, and what role does it play in a real application?

What is Json assertions in Laravel, and what role does it play in a real application? In Laravel, JSON assertions should be understood as part of a larger application architecture rather than as an isolated API call. API tests can inspect JSON structure, values and HTTP status codes. A strong understanding includes its purpose, the layer where it belongs, the data or request flow it affects, and the situations where another mechanism may be more appropriate. Practical context: Feature tests exercise application behavior through realistic HTTP requests, authentication, validation, routes and database interactions. The specific focus here is JSON assertions: API tests can inspect JSON structure, values and HTTP status codes. This question is designed to test not only terminology, but also how the concept fits into Laravel's request, application, database, security, or deployment workflow.