https://go.googlesource.com/tools/+/refs/tags/gopls/v0.18.1/internal/packagestest/testdata/x_test.go
internal/packagestest/testdata/x_test.go - tools - Git at Google
internaltestdataxgotools
https://pkg.go.dev/gitee.com/lonely0422/gometalinter.git/_linters/src/golang.org/x/tools/go/packages/packagestest
packagestest package -...
Package packagestest creates temporary projects on disk for testing go tools on.
package