# Exercise generic construct replacements through MCP semantic_batch.
stdin input.json
exec semedit mcp --enable-batching
stdout '"status":"ok"'
cmp api/settings.go want/api/settings.go
cmp api/messages_test.go want/api/messages_test.go
exec go test ./api

-- input.json --
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"semantic_batch","arguments":{"edits":[{"tool":"semantic_replace_construct","params":{"file":"api/messages_test.go","in_function":"TestMessages","kind":"loop","discriminator":"want","source":"for _, want := range []string{\"alpha\", \"beta\"} { if want == \"\" { t.Fatal(want) } }"}},{"tool":"semantic_replace_construct","params":{"file":"api/settings.go","kind":"const","symbol":"DefaultLimit","source":"const DefaultLimit = 10"}},{"tool":"semantic_replace_construct","params":{"file":"api/settings.go","kind":"var","symbol":"Revision","source":"var Revision = 2"}}]}}}

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

go 1.23

-- api/settings.go --
package api

const DefaultLimit = 5

var Revision = 1

-- want/api/settings.go --
package api

const DefaultLimit = 10

var Revision = 2
-- api/messages_test.go --
package api

import "testing"

func TestMessages(t *testing.T) {
	original := []string{"old"}
	if len(original) == 0 {
		t.Fatal("missing originals")
	}
	for _, want := range original {
		if want == "" {
			t.Fatal(want)
		}
	}
}

-- want/api/messages_test.go --
package api

import "testing"

func TestMessages(t *testing.T) {
	original := []string{"old"}
	if len(original) == 0 {
		t.Fatal("missing originals")
	}
	for _, want := range []string{"alpha", "beta"} {
		if want == "" {
			t.Fatal(want)
		}
	}
}