package repository

import (
	"testing"

	"database/sql"
	_ "modernc.org/sqlite"
)

func TestReplaceEmptyPDDSpecsUsesExpectedRawAsLock(t *testing.T) {
	db, err := sql.Open("sqlite", ":memory:")
	if err != nil {
		t.Fatal(err)
	}
	defer db.Close()
	if _, err := db.Exec(`CREATE TABLE pdd_products(goods_id TEXT PRIMARY KEY, skus_json TEXT, deleted_at TEXT, updated_at TEXT)`); err != nil {
		t.Fatal(err)
	}
	if _, err := db.Exec(`INSERT INTO pdd_products(goods_id,skus_json) VALUES('P1','')`); err != nil {
		t.Fatal(err)
	}
	ok, err := ReplaceEmptyPDDSpecs(db, "P1", "", `{"skus":[]}`, "2026-08-12T00:00:00Z")
	if err != nil || !ok {
		t.Fatalf("首次更新应成功: ok=%v err=%v", ok, err)
	}
	ok, err = ReplaceEmptyPDDSpecs(db, "P1", "", `{"skus":[1]}`, "2026-08-12T00:00:01Z")
	if err != nil || ok {
		t.Fatalf("原值已变化时必须跳过: ok=%v err=%v", ok, err)
	}
}