# Description
## What this PR fixes
This PR fixes a flaky/skipped unit test for
[downloadFile](vscode-file://vscode-app/Applications/Visual%20Studio%20Code.app/Contents/Resources/app/out/vs/code/electron-browser/workbench/workbench.html)
and aligns the test with the actual implementation.
## Changes made
Updated
[downloadFile](vscode-file://vscode-app/Applications/Visual%20Studio%20Code.app/Contents/Resources/app/out/vs/code/electron-browser/workbench/workbench.html)
test to validate file-saver behavior instead of DOM anchor creation.
Mocked
[saveAs](vscode-file://vscode-app/Applications/Visual%20Studio%20Code.app/Contents/Resources/app/out/vs/code/electron-browser/workbench/workbench.html)
from file-saver and asserted it is called with the fetched blob and
filename.
Added proper async assertions for:
successful file download
failed fetch path ([status !==
200](vscode-file://vscode-app/Applications/Visual%20Studio%20Code.app/Contents/Resources/app/out/vs/code/electron-browser/workbench/workbench.html))
rejecting with Failed downloading file
Updated
[downloadFile](vscode-file://vscode-app/Applications/Visual%20Studio%20Code.app/Contents/Resources/app/out/vs/code/electron-browser/workbench/workbench.html)
implementation to return the fetch promise chain so callers/tests can
await it reliably.
## Related Issue
Closes#18485
