test: Introduce AdkWebServerUITest

[vorburger]

This WORKS (test passes), and will not yet actually reproduce the #302 problem.

This because that is a packaging problem, which this kind of test cannot detect. It still seems valuable to have such a test here though anyway.

A future follow-up contribution on this might add the missing test coverage for the actual packaging problem.

[gemini-code-assist]

Summary of Changes

Hello @vorburger, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new integration test suite, AdkWebServerUITest, for the AdkWebServer's user interface. These tests verify basic UI routing and error handling, ensuring that the root path redirects to /dev-ui, and that /dev-ui paths return successfully, while non-existent pages correctly return a 404. The author notes that while this test passes, it does not address a specific packaging problem (#302), but is considered valuable for general UI testing.

Highlights

• New UI Integration Test: Introduces AdkWebServerUITest.java to verify the behavior of the AdkWebServer's user interface using Spring Boot's MockMvc.
• Root Path Redirection Test: Adds a test to ensure that accessing the root path (/) correctly redirects to /dev-ui with a 3xx status.
• Dev UI Path Tests: Includes tests to confirm that both /dev-ui and /dev-ui/ endpoints return an OK (200) status.
• Non-Existent Page Test: Adds a test case to verify that requests to non-existent UI pages correctly result in a 404 Not Found status.

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[vorburger]

@Poggecci how about this, in addition to #342 ? More coming up...

[gemini-code-assist]

Code Review

This pull request introduces a new integration test class, AdkWebServerUITest, to verify the UI routing behavior of AdkWebServer. The tests are well-structured and cover the basic scenarios. I've provided a suggestion to refactor two similar tests into a single parameterized test to improve code maintainability by reducing duplication.

[vorburger]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces a new integration test class, AdkWebServerUITest, to verify the behavior of the web server's UI endpoints. The tests cover root redirection, successful access to dev UI endpoints, and handling of non-existent pages. My feedback focuses on improving test performance by using a more specific test slice annotation and adhering to standard Java naming conventions for test methods.