# go get should update the go and toolchain lines in go.work
env TESTGO_VERSION=go1.21
env TESTGO_VERSION_SWITCH=switch
env GOTOOLCHAIN=auto
cp go.mod.new go.mod
cp go.work.new go.work
go get rsc.io/needgo121 rsc.io/needgo122 rsc.io/needgo123 rsc.io/needall
stderr '^go: rsc.io/[email protected] requires go >= 1.23; switching to go1.23.9$'
stderr '^go: added rsc.io/needall v0.0.1'
grep 'go 1.23$' go.mod
grep 'go 1.23$' go.work
grep 'toolchain go1.23.9' go.mod
grep 'toolchain go1.23.9' go.work

-- go.mod.new --
module m
go 1.1

-- p.go --
package p

-- go.work.new --
go 1.18
use .