This file is committed to the repository, but .gitignore also ignores application-local.properties. If this file is meant to be developer-specific, it should not be committed (provide a .template instead). If it is meant to be an example/default, remove the ignore rule so updates are tracked consistently.

This test enforces that a null provider response should be handled and propagated as null. In production, RandomUserProviderImpl throws when the response/users list is null and UserServiceImpl.saveAll NPEs on null input, so this test is currently encoding behavior that the real implementation does not support. Please either remove/update the test or update the production code to explicitly support null (preferably by returning an empty list or throwing a clear exception).

Minor readability issue: the stub setup when(randomUserProvider.fetchRandomUsers(2))... is on the same line as the List.of(...) closing. Please put it on a new properly-indented line so the test is easier to read/maintain.

The README marks GET /user/random as implemented, but the only controller mapping introduced is /random-users (see @RequestMapping("/random-users")). Please update either the API route or this checklist entry so they match.

This API model class appears unused in the production code (only referenced by its own test). If the project is now using the DummyJSON /users schema (flat firstName/lastName/image), consider removing this class (and its test) to avoid dead code, or wire it into the actual API response model if it's still needed.

saveAll will throw a NullPointerException if users is null (users.stream()). Either enforce non-null at the service boundary (e.g., validate and throw an IllegalArgumentException) or make this method null-safe (e.g., treat null as an empty list) so the contract is explicit and consistent with callers/tests.

RandomUserProviderImpl has an explicit branch that throws when response.body() is non-null but response.body().getUsers() is null, but there is no test covering that branch. Please add a test case where Response.success(responseObj) is returned with responseObj.setUsers(null) and assert that an IOException is thrown.

This API model class appears unused in the production code (only referenced by its own test). If the project is now using the DummyJSON /users schema (single image field), consider removing this class (and its test) to avoid dead code, or integrate it into the API response model if it is still intended to be used.

The endpoint is mapped to /random-users, but the README todo checklist (issue #5) states the implemented endpoint should be GET /user/random. Either update the controller mapping to match the documented/expected route, or update the README/issue references so the API contract is consistent.