To use "test" as an adjectival noun, is the proper form "test" or "testing"?

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Music by Eric Matyas
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Track title: Flying Over Ancient Lands

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Chapters
00:00 To Use &Quot;Test&Quot; As An Adjectival Noun, Is The Proper Form &Quot;Test&Quot; Or &Quot;Testing&
00:27 Accepted Answer Score 6
01:09 Answer 2 Score 4
01:33 Thank you

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Full question
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Tags
#nouns #adjectives #partsofspeech

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