env GO111MODULE=on

# Before vendoring, we expect to see the original directory.
go list -f '{{with .Module}}{{.Version}}{{end}} {{.Dir}}' rsc.io/quote/v3
stdout 'v3.0.0'
stdout '.*[/\\]not-rsc.io[/\\]quote[/\\]v3'

# Since all dependencies are replaced, 'go mod vendor' should not
# have to download anything from the network.
go mod vendor
! stderr 'downloading'
! stderr 'finding'

# After vendoring, we expect to see the replacement in the vendor directory,
# without attempting to look up the non-replaced version.
cmp vendor/rsc.io/quote/v3/quote.go local/not-rsc.io/quote/v3/quote.go

go list -mod=vendor -f '{{with .Module}}{{.Version}}{{end}} {{.Dir}}' rsc.io/quote/v3
stdout 'v3.0.0'
stdout '.*[/\\]vendor[/\\]rsc.io[/\\]quote[/\\]v3'
! stderr 'finding'
! stderr 'lookup disabled'

# 'go list' should provide the original replacement directory as the module's
# replacement path.
go list -mod=vendor -f '{{with .Module}}{{with .Replace}}{{.Path}}{{end}}{{end}}' rsc.io/quote/v3
stdout '.*[/\\]not-rsc.io[/\\]quote[/\\]v3'

# The same module can't be used as two different paths.
cd multiple-paths
! go mod vendor
stderr 'rsc.io/quote/v3@v3.0.0 used for two different module paths \(not-rsc.io/quote/v3 and rsc.io/quote/v3\)'

-- go.mod --
module example.com/replace

require rsc.io/quote/v3 v3.0.0
replace rsc.io/quote/v3 => ./local/not-rsc.io/quote/v3

-- imports.go --
package replace

import _ "rsc.io/quote/v3"

-- local/not-rsc.io/quote/v3/go.mod --
module not-rsc.io/quote/v3

-- local/not-rsc.io/quote/v3/quote.go --
package quote

-- multiple-paths/main.go --
package main
import (
	"fmt"
	"rsc.io/quote/v3"
)
func main() {
	fmt.Println(quote.GoV3())
}
-- multiple-paths/go.mod --
module quoter
require (
	rsc.io/quote/v3 v3.0.0
	not-rsc.io/quote/v3 v3.0.0
)
replace not-rsc.io/quote/v3 => rsc.io/quote/v3 v3.0.0