src/cmd/go/testdata/script/mod_go_version_missing.txt

cp go.mod go.mod.orig

# With -mod=readonly, we should not update the go version in use.
#
# We started adding the go version automatically in Go 1.12, so a module without
# one encountered in the wild (such as in the module cache) should assume Go
# 1.11 semantics.

# For Go 1.11 modules, 'all' should include dependencies of tests.
# (They are pruned out as of Go 1.16.)

go list -mod=readonly all
stdout '^example.com/dep$'
stdout '^example.com/testdep$'
cp stdout list-1.txt
cmp go.mod go.mod.orig

# For Go 1.11 modules, automatic vendoring should not take effect.
# (That behavior was added in Go 1.14.)

go list all  # should default to -mod=readonly, not -mod=vendor.
cmp stdout list-1.txt

# When we set -mod=mod, the go version should be updated immediately,
# narrowing the "all" pattern reported by that command.

go list -mod=mod all
! stdout '^example.com/testdep$'
cp stdout list-2.txt
cmpenv go.mod go.mod.want

go list -mod=mod all
cmp stdout list-2.txt

# The updated version should have been written back to go.mod, so
# automatic vendoring should come into effect (and fail).
! go list all
stderr '^go: inconsistent vendoring'

cp go.mod.orig go.mod

# In readonly or vendor mode (not -mod=mod), the inferred Go version is 1.11.
# For Go 1.11 modules, Go 1.13 features should not be enabled.

! go build -mod=readonly .
stderr '^# example\.com/m\n\.[/\\]m\.go:5:11: underscores in numeric literals requires go1\.13 or later \(-lang was set to go1\.11; check go\.mod\)$'
cmp go.mod go.mod.orig


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

require example.com/dep v0.1.0

replace (
	example.com/dep v0.1.0 => ./dep
	example.com/testdep v0.1.0 => ./testdep
)
-- go.mod.want --
module example.com/m

go $goversion

require example.com/dep v0.1.0

replace (
	example.com/dep v0.1.0 => ./dep
	example.com/testdep v0.1.0 => ./testdep
)
-- vendor/example.com/dep/dep.go --
package dep
import _ "example.com/bananas"
-- vendor/modules.txt --
HAHAHA this is broken.

-- m.go --
package m

import _ "example.com/dep"

const x = 1_000

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

require example.com/testdep v0.1.0
-- dep/dep.go --
package dep
-- dep/dep_test.go --
package dep_test

import _ "example.com/testdep"

-- testdep/go.mod --
module example.com/testdep
-- testdep/testdep.go --
package testdep