Remove curl from sendfile_test.go
This came up as technical debt in a review this week. We shouldn't use curl
for these test downloads.
This change also updates sendfile_test.go to use testify/require.
Edited by Jacob Vosmaer
This came up as technical debt in a review this week. We shouldn't use curl
for these test downloads.
This change also updates sendfile_test.go to use testify/require.