Prerelease of new testing framework and test run UI in VS Code

Tooling VS Code
53

I finally figured out why it appeared that the test framework was running out of date code. For reasons that are still unclear sometimes VSCode takes much longer than it should, minutes instead of a fraction of a second, to save small julia files. I was changing code in the test cases and then running them immediately but VSCode hadn’t saved them yet so the old versions were run.

I believe this is related to file formatting. I have VSCode set to autosave on focus change and to format on save.

Ordinarily formatting and saving the files takes a fraction of a second. But, the longer my REPL session is active the longer formatting and saving takes, until eventually it takes minutes to format and save a 200 line file. Then I have to restart VSCode to get acceptable response.

I posted a question about this here but did not get a resolution.

@davidanthoff do you have any ideas about how I can fix the slow saving problem?

Version and OS info 
julia> versioninfo()
Julia Version 1.8.5
Commit 17cfb8e65e (2023-01-08 06:45 UTC)
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: 32 × AMD Ryzen 9 7950X 16-Core Processor
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-13.0.1 (ORCJIT, znver3)
  Threads: 32 on 32 virtual cores
Environment:
  JULIA_EDITOR = code.cmd
VSCode settings 
{
    "terminal.integrated.commandsToSkipShell": [
        "language-julia.interrupt"
    ],

    "editor.fontFamily": "JuliaMono,Consolas,Courier New ,monospace",
    "editor.fontLigatures": "'zero', 'ss02', 'ss04', 'ss05', 'ss08'",
    "julia.symbolCacheDownload": true,
    "julia.enableTelemetry": true,
    "files.autoSave": "onFocusChange",
    "workbench.editor.enablePreview": false,
    "workbench.editor.revealIfOpen": true,
    "git.confirmSync": false,
    "editor.accessibilitySupport": "off",
    "terminal.integrated.tabs.enabled": false,
    "editor.minimap.enabled": false,
    "git.enableSmartCommit": true,
    "editor.wordWrap": "on",
    "editor.defaultFormatter": "julialang.language-julia",
    "editor.formatOnSave": true,
    "julia.NumThreads": "auto",
    "julia.useCustomSysimage": true
}