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Sự khác biệt giữa getBy, queryBy và findBy trong React Testing Library là gì? · ORA·tech

Trung bình Pro#testing

Sự khác biệt giữa getBy, queryBy và findBy trong React Testing Library là gì?

15 tháng 2, 2026

Tóm tắt nhanh

`getBy` dùng khi element chắc chắn tồn tại (ném lỗi ngay nếu không tìm thấy); `queryBy` trả về `null` khi không tìm thấy, chuyên dùng để kiểm tra một element không tồn tại; `findBy` trả về một Promise, tự động đợi (mặc định 1s) cho đến khi element xuất hiện trong DOM.

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