Use DeepEqual instead of =

[linyouchong]

What this PR does / why we need it:
We should use DeepEqual here
if v != tc.expectVal { t.Errorf("Got %v but expected %v", v, tc.expectVal) }
Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:
NONE

Release note:

NONE

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