package lang

import (
	"strings"
	"testing"
)

func TestGenerateGoIndexedDataClassSelector(t *testing.T) {
	prog, err := Parse(`
package demo

data class User(var id: String)

fun first(users: List<User>): String { return users[0].id }
`)
	if err != nil {
		t.Fatalf("parse failed: %v", err)
	}
	out, err := GenerateGo(prog)
	if err != nil {
		t.Fatalf("generation failed: %v", err)
	}
	if !strings.Contains(string(out), "return users[0].Id") {
		t.Fatalf("generated Go missing indexed selector:\n%s", out)
	}
}