env GO111MODULE=on

go list -m all
stdout '^x v1.0.0 => ./x'
stdout '^w'

[!short] go build
[!short] ! go build -mod=vendor

go list -f {{.Dir}} x
stdout 'src[\\/]x'

go mod vendor -v
stderr '^# x v1.0.0 => ./x'
stderr '^x'
stderr '^# y v1.0.0 => ./y'
stderr '^y'
stderr '^# z v1.0.0 => ./z'
stderr '^z'
! stderr '^w'

go list -f {{.Dir}} x
stdout 'src[\\/]x'

go list -f {{.Dir}} -m x
stdout 'src[\\/]x'

go list -mod=vendor -f {{.Dir}} x
stdout 'src[\\/]vendor[\\/]x'

go list -mod=vendor -f {{.Dir}} -m x
stdout 'src[\\/]vendor[\\/]x'

go list -f {{.Dir}} -m w
stdout 'src[\\/]w'

! go list -mod=vendor -f {{.Dir}} w
stderr 'src[\\/]vendor[\\/]w'

! exists vendor/x/testdata
! exists vendor/a/foo/bar/b/main_test.go

exists vendor/a/foo/AUTHORS.txt
exists vendor/a/foo/CONTRIBUTORS
exists vendor/a/foo/LICENSE
exists vendor/a/foo/PATENTS
exists vendor/a/foo/COPYING
exists vendor/a/foo/COPYLEFT
exists vendor/x/NOTICE!
exists vendor/mysite/myname/mypkg/LICENSE.txt

! exists vendor/a/foo/licensed-to-kill
! exists vendor/w
! exists vendor/w/LICENSE
! exists vendor/x/x2
! exists vendor/x/x2/LICENSE

[short] stop

go build
go build -mod=vendor
go test -mod=vendor . ./subdir
go test -mod=vendor ./...

-- go.mod --
module m

require (
	a v1.0.0
	mysite/myname/mypkg v1.0.0
	w v1.0.0 // indirect
	x v1.0.0
	y v1.0.0
	z v1.0.0
)

replace (
	a v1.0.0 => ./a
	mysite/myname/mypkg v1.0.0 => ./mypkg
	w v1.0.0 => ./w
	x v1.0.0 => ./x
	y v1.0.0 => ./y
	z v1.0.0 => ./z
)

-- a/foo/AUTHORS.txt --
-- a/foo/CONTRIBUTORS --
-- a/foo/LICENSE --
-- a/foo/PATENTS --
-- a/foo/COPYING --
-- a/foo/COPYLEFT --
-- a/foo/licensed-to-kill --
-- w/LICENSE --
-- x/NOTICE! --
-- x/x2/LICENSE --
-- mypkg/LICENSE.txt --

-- a/foo/bar/b/main.go --
package b
-- a/foo/bar/b/main_test.go --
package b

import (
	"os"
	"testing"
)

func TestDir(t *testing.T) {
	if _, err := os.Stat("../testdata/1"); err != nil {
		t.Fatalf("testdata: %v", err)
	}
}
-- a/foo/bar/c/main.go --
package c
-- a/foo/bar/c/main_test.go --
package c

import (
	"os"
	"testing"
)

func TestDir(t *testing.T) {
	if _, err := os.Stat("../../../testdata/1"); err != nil {
		t.Fatalf("testdata: %v", err)
	}
	if _, err := os.Stat("./testdata/1"); err != nil {
		t.Fatalf("testdata: %v", err)
	}
}
-- a/foo/bar/c/testdata/1 --
-- a/foo/bar/testdata/1 --
-- a/go.mod --
module a
-- a/main.go --
package a
-- a/main_test.go --
package a

import (
	"os"
	"testing"
)

func TestDir(t *testing.T) {
	if _, err := os.Stat("./testdata/1"); err != nil {
		t.Fatalf("testdata: %v", err)
	}
}
-- a/testdata/1 --
-- appengine.go --
// +build appengine

package m

import _ "appengine"
import _ "appengine/datastore"
-- mypkg/go.mod --
module me
-- mypkg/mydir/d.go --
package mydir
-- subdir/v1_test.go --
package m

import _ "mysite/myname/mypkg/mydir"
-- testdata1.go --
package m

import _ "a"
-- testdata2.go --
package m

import _ "a/foo/bar/b"
import _ "a/foo/bar/c"
-- v1.go --
package m

import _ "x"
-- v2.go --
// +build abc

package mMmMmMm

import _ "y"
-- v3.go --
// +build !abc

package m

import _ "z"
-- v4.go --
// +build notmytag

package m

import _ "x/x1"
-- w/go.mod --
module w
-- w/w.go --
package w
-- x/go.mod --
module x
-- x/testdata/x.txt --
placeholder - want directory with no go files
-- x/x.go --
package x
-- x/x1/x1.go --
// +build notmytag

package x1
-- x/x2/dummy.txt --
dummy
-- x/x_test.go --
package x

import _ "w"
-- y/go.mod --
module y
-- y/y.go --
package y
-- z/go.mod --
module z
-- z/z.go --
package z