Most of us live in free countries, so if your employer insists and you refuse, then you can find a job elsewhere. But is it reasonable to compel people to learn new skills? It seems to me that if your employer decides to adopt new working practices, you can resist the change on the basis of principle or conscience or whatever, but if your company wishes to embed code-savvy testers in the development teams it really is their call. You can either be part of that change or not. If you have the skills, you become more useful in your team and more flexible too of course.
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