"atest" is probably misspelled. Trying attest instead Definition of attest
attest has definitions from the field of law
1
[ verb ] provide evidence for; stand as proof of

Examples

"His high fever attested to his illness" "The buildings in Rome manifest a high level of architectural sophistication"

2
[ verb ] authenticate, affirm to be true, genuine, or correct, as in an official capacity

Examples

"I attest this signature"

3
[ verb ] (law) give testimony in a court of law
4
[ verb ] establish or verify the usage of

Examples

"This word is not attested until 1993"

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