# Initially, the Go language version is too low.
exec gofumpt -l .
! stdout .

# We can give an explicitly newer version.
exec gofumpt -lang=go1.13 -l .
stdout -count=1 'foo\.go'
stdout -count=1 'nested[/\\]nested\.go'

# If we bump the version in go.mod, it should be picked up.
exec go mod edit -go=1.13
exec gofumpt -l .
stdout -count=1 'foo\.go'
! stdout 'nested'

# Ensure we produce the output we expect, and that it's stable.
exec gofumpt foo.go
cmp stdout foo.go.golden
exec gofumpt -d foo.go.golden
! stdout .

# We can give an explicitly older version, too
exec gofumpt -lang=go1.0 -l .
! stdout .

-- go.mod --
module test

go 1.12
-- foo.go --
package p

const (
	i = 0
	j = 022
	k = 0o_7_5_5
	l = 1022
)
-- foo.go.golden --
package p

const (
	i = 0
	j = 0o22
	k = 0o_7_5_5
	l = 1022
)
-- nested/go.mod --
module nested

go 1.11
-- nested/nested.go --
package p

const (
	i = 0
	j = 022
	k = 0o_7_5_5
	l = 1022
)