Usability Issue With Testing UI

**Description:**

I would like to report a usability issue I encounter while using the testing framework.

**Problem:**
When utilizing the test user interface, I find it challenging to view the test information effectively. The layout places the test details on the side of the page, with no ability to customize the scale (other than small or large) which makes it difficult to see all the relevant information at once.

**Issues with Current UI:**
**Fixed Expanded View:** The expanded view cannot be adjusted to fit the developers needs, which is less ideal. Users cannot simultaneously view the list of tests and their results comfortably.

**Suggestions for Improvement:**
1. Consider implementing a more flexible layout where users can easily view test information alongside results.
2. Introduce adjustable panels that allows users to customize the visibility of test information according to their preferences.

Improving the usability of the testing framework would significantly enhance the developer experience and efficiency when running and reviewing tests.

Start by reproducing the issue in the testing UI and inspecting how the test list, details, and results are currently arranged. Clarify the target layout and adjustable-panel behavior with maintainers; done means users can view the test list and results together and adjust information visibility.

Written by the indexing model from the issue text.