Companion Recommends disabling on-edit test updates when they are not enabled

[fastcat]

NOTE: this is about the Go Companion extension, which directs issues to be filed here instead of in its own repo, where issues are entirely disabled

What version of Go, VS Code & VS Code Go extension are you using?

Version Information

• Run go version to get version of Go from the VS Code integrated terminal.
  • go version go1.25.6 linux/amd64
• Run gopls -v version to get version of Gopls from the VS Code integrated terminal.
  • golang.org/x/tools/gopls v0.21.0
• Run code -v or code-insiders -v to get version of VS Code or VS Code Insiders.
  • 1.108.1
• Check your installed extensions to get the version of the VS Code Go extension
  • 0.53.0
• Run Ctrl+Shift+P (Cmd+Shift+P on Mac OS) > Go: Locate Configured Go Tools command.

Tools Configuration

Environment

GOBIN: undefined
toolsGopath:
gopath: /home/vscode/go
GOROOT: /usr/local/go
PATH: /vscode/vscode-server/bin/linux-x64/585eba7c0c34fd6b30faac7c62a42050bfbc0086/bin/remote-cli:/home/vscode/.local/bin:/opt/ros/kilted/opt/gz_tools_vendor/bin:/opt/ros/kilted/bin:/workspaces/firefly/.venv/bin:/home/vscode/.local/bin:/home/vscode/go/bin:/usr/local/go/bin:/home/vscode/.cargo/bin:/home/vscode/.scripts:/opt/asdf/shims:/opt/fluent-bit/bin:/usr/lib/ccache:/usr/local/cuda/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

Tools

go:	/usr/local/go/bin/go: go version go1.25.6 linux/amd64

gotests:	/home/vscode/go/bin/gotests	(version: v1.6.0 built with go: go1.25.1)
impl:	/home/vscode/go/bin/impl	(version: v1.4.0 built with go: go1.25.1)
goplay:	/home/vscode/go/bin/goplay	(version: v1.0.0 built with go: go1.25.1)
dlv:	/home/vscode/go/bin/dlv	(version: v1.25.2 built with go: go1.25.5)
golangci-lint-v2:	/home/vscode/go/bin/golangci-lint-v2	(version: v2.7.2 built with go: go1.25.5)
gopls:	/home/vscode/go/bin/gopls	(version: v0.21.0 built with go: go1.25.5)

Go env

Workspace Folder (CENSORED): /workspaces/CENSORED

AR='ar'
CC='gcc'
CGO_CFLAGS='...lots of ROS stuff...'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='...lots of ROS stuff...'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='...lots of ROS stuff...'
CXX='g++'
GCCGO='gccgo'
GO111MODULE=''
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/home/vscode/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/home/vscode/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build737768430=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/dev/null'
GOMODCACHE='/home/vscode/go/pkg/mod'
GONOPROXY='github.com/ATIinc'
GONOSUMDB='github.com/ATIinc'
GOOS='linux'
GOPATH='/home/vscode/go'
GOPRIVATE='github.com/ATIinc'
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/home/vscode/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.25.6'
GOWORK='/workspaces/CENSORED/go.work'
PKG_CONFIG='pkg-config'

Share the Go related settings you have added/edited

Run Preferences: Open Settings (JSON) command to open your settings.json file.
Share all the settings with the go. or ["go"] or gopls prefixes.

exp-vscode-go.testExplorer.update is not modified

Describe the bug

Was shown this notification:

Consider disabling on-edit updates. Reloading tests took more than half a second. Disabling on-edit updates to fix this issue.

However inspecting my settings, I see that exp-vscode-go.testExplorer.update is still at its default on-save in all environments (User, Remote [Dev Container], Workspace).

Steps to reproduce the behavior:

1. Install & enable the Go Companion
2. Have something be slow?
3. See notification
4. Click OK, navigates to the setting that is already in the recommended state

[firelizzard18]

@fastcat I can fix this and it's probably a simple fix, but if you're willing to share what you're working on I'd be interested in doing some profiling to figure out where the slowdown is coming from. What version of Go Companion are you using? The prerelease version (v0.2.x) is significantly faster than the release version (v0.1.x) in some cases.

[fastcat]

I'm on Go Companion 0.2.3.

The project itself I'm working on where I saw this is proprietary, so I can't share the code. As an approximate measure of scale, it has just over 1000 .go files in a go.workspace of 9 modules. A couple of those modules make heavy use of CGo to interface with (a) ROS (b) a USB peripheral's SDK using libusb and (c) Wails.

[firelizzard18]

It might be CGo that's doing it, especially if you're building on Linux where Wails uses GTK. In my experience, CGo linking to GTK and/or OpenGL dramatically inflates compile times, especially the initial compilation. Go Companion is effectively a front end for gopls. Test discovery mostly depends on the AST, but it does use type information. Also the test discovery code just plugs into the general code intelligence system, it doesn't do the AST loading itself. That probably involves some amount of processing of CGo for code that interacts with C types.

[fastcat]

Yep, that all makes sense, and matches with other experiences working in this repo.

To be clear, I don't see the "it took longer than usual" as part of the bug here, only that it's providing unusable advice in response to it.