Stop redirect child urls?

Hello. I wrote a redirection like this:

/product-category/parent-category/.*
/test-page/

So it should redirect all sub categories to test-page without child categories. Ie:
/product-category/parent-category/sub-category/ ->
/test-page/

But it redirects with child categories:
/test-page/sub-category/

I just want to redirect /test-page/ how can i prevent sub-category ?