env GO111MODULE=on

# list {{.Dir}} shows main module and go.mod but not not-yet-downloaded dependency dir.
go list -m -f '{{.Path}} {{.Main}} {{.GoMod}} {{.Dir}}' all
stdout '^x true .*[\\/]src[\\/]go.mod .*[\\/]src$'
stdout '^rsc.io/quote false .*[\\/]v1.5.2.mod $'

# list {{.Dir}} shows dependency after download (and go list without -m downloads it)
go list -f '{{.Dir}}' rsc.io/quote
stdout '.*mod[\\/]rsc.io[\\/]quote@v1.5.2$'

# downloaded dependencies are read-only
exists -readonly $GOPATH/pkg/mod/rsc.io/quote@v1.5.2
exists -readonly $GOPATH/pkg/mod/rsc.io/quote@v1.5.2/buggy

# go clean -modcache can delete read-only dependencies
go clean -modcache
! exists $GOPATH/pkg/mod/rsc.io/quote@v1.5.2

# list {{.Dir}} shows replaced directories
cp go.mod2 go.mod
go list -f {{.Dir}} rsc.io/quote
go list -m -f '{{.Path}} {{.Version}} {{.Dir}}{{with .Replace}} {{.GoMod}} => {{.Version}} {{.Dir}} {{.GoMod}}{{end}}' all
stdout 'mod[\\/]rsc.io[\\/]quote@v1.5.1'
stdout 'v1.3.0.*mod[\\/]rsc.io[\\/]sampler@v1.3.1 .*[\\/]v1.3.1.mod => v1.3.1.*sampler@v1.3.1 .*[\\/]v1.3.1.mod'

# list std should work
go list std
stdout ^math/big

# rsc.io/quote/buggy should be listable as a package
go list rsc.io/quote/buggy

# rsc.io/quote/buggy should not be listable as a module
go list -m -e -f '{{.Error.Err}}' nonexist rsc.io/quote/buggy
stdout '^module "nonexist" is not a known dependency'
stdout '^module "rsc.io/quote/buggy" is not a known dependency'

! go list -m nonexist rsc.io/quote/buggy
stderr '^go list -m nonexist: module "nonexist" is not a known dependency'
stderr '^go list -m rsc.io/quote/buggy: module "rsc.io/quote/buggy" is not a known dependency'

# Module loader does not interfere with list -e (golang.org/issue/24149).
go list -e -f '{{.Error.Err}}' database
stdout 'no Go files in '
! go list database
stderr 'no Go files in '

-- go.mod --
module x
require rsc.io/quote v1.5.2

-- go.mod2 --
module x
require rsc.io/quote v1.5.1
replace rsc.io/sampler v1.3.0 => rsc.io/sampler v1.3.1

-- x.go --
package x
import _ "rsc.io/quote"