@gjsjohnmurray Can you explain why this is necessary? Why can't the testing manager sync the files itself?

I'd prefer not to have to make the Testing Manager have to deal with /api/atelier file- and directory-type endpoints directly. But perhaps I can make it talk to isfs://server/_vscode/NAMESPACE/foo.bar?csp URLs directly instead of using isfs://server/.vscode/foo.bar and relying on the the redirection (which is what's no longer happening for client-type workspaces since #1479). I'll try this out in Testing Manager.

Yeah, I can see why it would be easier to use vscode.workspace.fs on isfs URIs. I think using /_vscode directly should work though, assuming there really is a /_vscode web app on that server.

I worked around it in the other extension so I'm closing this unmerged.