Test requirements and ISO 9001

Answer:
ISO 9001:2015 considers tests requirements for:
Approval of new products and services performance (clause 8.3.4)
Approval of materials and services acquired to external providers (clause 8.4.2)
Approval of final product or service (clause 8.6)

The following material will provide you information about test requirements:
ISO 9001: Requirements for the release of the product or service - https://advisera.com/9001academy/blog/2017/03/28/iso-9001-requirements-for-the-release-of-the-product-or-service/
The ISO 9001 Design Process Explained - https://advisera.com/9001academy/blog/2013/11/05/iso-9001-design-process-explained/
Enroll for free in this course – ISO 9001:2015 Foundations Course - https://advisera.com/training/iso-9001-foundations-course/
- Book – Discover ISO 9001:2015 Through Practical Examples – https://advisera.com/books/discover-iso-9001-2015-through-practical-examples/