package store

import (
	"encoding/json"
	"testing"
)

// 回归：空列表必须序列化为 [] 而非 null（前端 .map 白屏根因）。
func TestEmptyListsSerializeAsEmptyArrays(t *testing.T) {
	s := openTestStore(t)
	cs, err := s.ListConversations("owner_none", "prj_none")
	if err != nil {
		t.Fatalf("ListConversations: %v", err)
	}
	if cs == nil {
		t.Fatal("ListConversations returned nil slice")
	}
	if b, _ := json.Marshal(cs); string(b) != "[]" {
		t.Fatalf("expected [], got %s", b)
	}
	ps, _ := s.ListProjects("owner_none")
	if ps == nil {
		t.Fatal("ListProjects returned nil slice")
	}
	if b, _ := json.Marshal(ps); string(b) != "[]" {
		t.Fatalf("expected [], got %s", b)
	}
}