# Structural overwrite requests fail through the public MCP tool without changing source.
mkdir -p .scratch
cp api/model.go .scratch/original.go
stdin input.json
exec semedit mcp
stdout 'supported keys'
cmp api/model.go .scratch/original.go
grep 'Keep this comment' api/model.go
grep 'type Config struct' api/model.go
grep 'Other' api/model.go

stdin insert_decl.json
exec semedit mcp
stdout 'supported keys'
cmp api/model.go .scratch/original.go

stdin null_path.json
exec semedit mcp
stdout 'construct_path.*non-empty string'
cmp api/model.go .scratch/original.go

stdin empty_revision.json
exec semedit mcp
stdout 'expected_revision.*non-empty string'
cmp api/model.go .scratch/original.go
grep 'Keep this comment' api/model.go
grep 'type Config struct' api/model.go
grep 'Other' api/model.go

-- input.json --
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"semantic_insert_construct","arguments":{"file":"api/model.go","kind":"type","source":"type Config struct { Port int }","overwrite":true}}}
-- insert_decl.json --
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"semantic_insert_decl","arguments":{"file":"api/model.go","source":"var Revision = 2","overwrite":true}}}
-- null_path.json --
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"semantic_insert_construct","arguments":{"file":"api/model.go","kind":"statement/expression","source":"audit()","in_function":"Run","discriminator":"ready()","construct_path":null}}}
-- empty_revision.json --
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"semantic_insert_construct","arguments":{"file":"api/model.go","kind":"statement/expression","source":"audit()","in_function":"Run","discriminator":"ready()","construct_path":"0","expected_revision":""}}}

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

go 1.23

-- api/model.go --
package api

// Keep this comment.
type Config struct { Host string }

type Other struct{}