# Specific declaration kinds must parse comments while rejecting wrong or multiple declaration forms before writing.
mkdir -p .scratch
cp request.go .scratch/original.go
stdin commented-var.txt
exec semedit insert-construct --file request.go --kind var --placement after_symbol --target ErrRequest --group standalone --source -
stdout 'Successfully inserted var construct'
grep 'ErrInvalidRequest is returned when a request lacks a valid identity' request.go
grep 'var ErrInvalidRequest = 2' request.go

stdin commented-const.txt
exec semedit insert-construct --file request.go --kind const --placement after_symbol --target ErrInvalidRequest --group standalone --source -
stdout 'Successfully inserted const construct'
grep 'DefaultIdentity is used when a request omits an identity' request.go
grep 'const DefaultIdentity = "default"' request.go

stdin commented-type.txt
exec semedit insert-construct --file request.go --kind type --placement after_symbol --target Request --source -
stdout 'Successfully inserted type construct'
grep 'Identity is the canonical request identifier' request.go
grep 'type Identity string' request.go

cp request.go .scratch/after-valid.go
stdin wrong-kind.txt
! exec semedit insert-construct --file request.go --kind var --source -
stderr 'var insertion requires a var declaration'
cmp request.go .scratch/after-valid.go

stdin multiple-vars.txt
! exec semedit insert-construct --file request.go --kind var --source -
stderr 'var insertion requires exactly one var declaration'
cmp request.go .scratch/after-valid.go

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

go 1.24
-- request.go --
package request

type Request struct{}

var ErrRequest = 1
-- commented-var.txt --
// ErrInvalidRequest is returned when a request lacks a valid identity.
var ErrInvalidRequest = 2
-- commented-const.txt --
// DefaultIdentity is used when a request omits an identity.
const DefaultIdentity = "default"
-- commented-type.txt --
// Identity is the canonical request identifier.
type Identity string
-- wrong-kind.txt --
type Other struct{}
-- multiple-vars.txt --
var First = 1
var Second = 2