# The CLI replaces every parameter of a private function with one same-file object, rewrites bound body uses, and preserves call argument order in keyed literals.
cp write.go .scratch/write-before.txt
! exec semedit refactor-introduce-parameter-object --file write.go --symbol write --destination-file write.go --parameter '{"name":"options","type":"_"}' --fields '[{"source_index":0,"field":{"name":"path","type":"string"}},{"source_index":1,"field":{"name":"data","type":"string"}},{"source_index":2,"field":{"name":"mode","type":"uint32"}}]'
stderr 'private identifiers'
cmp write.go .scratch/write-before.txt
! exec semedit refactor-introduce-parameter-object --file write.go --symbol write --destination-file write.go --parameter '{"name":"status","type":"writeOptions"}' --fields '[{"source_index":0,"field":{"name":"path","type":"string"}},{"source_index":1,"field":{"name":"data","type":"string"}},{"source_index":2,"field":{"name":"mode","type":"uint32"}}]'
stderr 'conflicts with an existing body binding'
cmp write.go .scratch/write-before.txt
! exec semedit refactor-introduce-parameter-object --file write.go --symbol write --destination-file write.go --parameter '{"name":"options","type":"writeOptions"}' --fields '[{"source_index":0,"field":{"name":"path","type":"string"}}]'
stderr 'every original parameter'
cmp write.go .scratch/write-before.txt
exec semedit refactor-introduce-parameter-object --file write.go --symbol write --destination-file write.go --parameter '{"name":"options","type":"writeOptions"}' --fields '[{"source_index":0,"field":{"name":"path","type":"string"}},{"source_index":1,"field":{"name":"data","type":"string"}},{"source_index":2,"field":{"name":"mode","type":"uint32"}}]'
stdout 'Replaced all function parameters'
cmp write.go .scratch/want/write.txt
cmp calls.go .scratch/want/calls.txt
cmp other.go .scratch/want/other.txt
cmp write_test.go .scratch/want/write_test.txt
exec go test ./...
-- go.mod --
module example.com/parameterobject

go 1.24
-- write.go --
package sample

import "fmt"

var status = "global"

func save(path, data string, mode uint32) string { return path + data }
func write(path, data string, mode uint32) string { return fmt.Sprint(status) + save(path, data, mode) }
-- calls.go --
package sample

func first() string { return write("a", "b", 7) }
-- other.go --
package sample

func second() string { return write("c", "d", 9) }
-- write_test.go --
package sample

func testCaller() string { return write("test", "case", 11) }
-- .scratch/want/write.txt --
package sample

import "fmt"

var status = "global"

func save(path, data string, mode uint32) string { return path + data }
func write(options writeOptions) string { return fmt.Sprint(status) + save(options.path, options.data, options.mode) }

type writeOptions struct {
	path string
	data string
	mode uint32
}
-- .scratch/want/calls.txt --
package sample

func first() string { return write(writeOptions{path: "a", data: "b", mode: 7}) }
-- .scratch/want/other.txt --
package sample

func second() string { return write(writeOptions{path: "c", data: "d", mode: 9}) }
-- .scratch/want/write_test.txt --
package sample

func testCaller() string { return write(writeOptions{path: "test", data: "case", mode: 11}) }