Test Explorer cannot detect unit test when using mill-bsp

[PeterWang-dev]

Describe the bug

Use Chisel Template project as an example:

1. Clone this repository that I created from template.
2. Initialize project with bloop and open Test Explorer. You will find every thing works well.
3. Clean up repository git clean -fdx and reload the vscode window.
4. Do not import build at first. Then press Ctrl+Shift+P, typing Metals: Switch build server to change build server to mill-bsp
5. Initialize project. Open Test Explorer and observed that no tests display here.

Expected behavior

Unit test can be detected and displayed in Test Explorer when using mill-bsp.

Operating system

Linux

Editor/Extension

VS Code

Version of Metals

v1.2.0

Extra context or search terms

No response

[tgodzik]

Thanks for reporting! Running tests with mill-bsp is not currently supported. This is blocked by #5928 Once the other issue is done it should work correctly.