This directory contains general-purpose testing utilities that can be used from both unit tests and integration tests.
Modules here may import vscode module, but corresponding fake implementations must be provided in src/test/unit/injected_modules/vscode so that they can be still used in unit tests.
Make sure index.ts to re-export all exported symbols in other *.ts files in this directory (but not those under subdirectories) so that we don't need to import individual modules.