tests

add and fix tests for helpers #8476

Job	Run time
lint	57s
unit-tests	1m 2s
build	3m 4s
multiple-backend	3m 7s
utapi-v2-tests	1m 54s
s3c-ft-tests-v1	8m 54s
sur-tests (Without Inflights, false)	2m 2s
file-ft-tests-null-compat	12m 34s
kmip-cluster-ft-tests	2m 24s
kmip-ft-tests	1m 49s
mongo-v1-ft-tests	11m 57s
mongo-v0-ft-tests	10m 58s
s3c-ft-tests-v0	10m 38s
file-ft-tests	11m 30s
s3c-ft-tests-v0-null-compat	10m 44s
sur-tests (With Inflights, true)	2m 3s
sse-kms-migration-kmip-hideArn	4m 0s
sse-kms-migration-kmip-showArn	4m 10s
sse-kms-migration-aws-showArn	3m 56s
sse-kms-migration-kmip-showArn-global	4m 12s
sse-kms-migration-aws-showArn-global	3m 56s
sse-kms-migration-aws-hideArn	3m 54s
	1h 59m 45s

Provide feedback