Test output has strange indentation when using \n as the EOL

[jdneo]

Does this issue occur when all extensions are disabled?: Yes/No

Version: 1.57.0-insider (user setup)
Commit: 5319757
Date: 2021-05-24T05:14:19.500Z
Electron: 12.0.7
Chrome: 89.0.4389.128
Node.js: 14.16.0
V8: 8.9.255.25-electron.0
OS: Windows_NT x64 10.0.19043

Steps to Reproduce:

1. Using the test-provider-sample project
2. Update the method invocation of appendOutput(), use just \n as the EOL
3. The output indentation looks strange. If using \r\n, it looks as expected

// cc @connor4312

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Cannot toggle the test hide status (#124544)

[connor4312]

The output is displayed as terminal output; \n only moves the cursor down a line, you want to use \r too in order to reset its position (\r\n)

[vscode-triage-bot]

The described behavior is how it is expected to work. If you disagree, please explain what is expected and what is not in more detail. See also our issue reporting guidelines.

Happy Coding!