This function adds httptest to Suggests in the package DESCRIPTION and
loads it in tests/testthat/setup.R. Call it once when you're setting up
a new package test suite.
Usage
use_httptest(path = ".")
Value
Nothing: called for file system side effects.
Arguments
path
character path to the package
Details
The function is idempotent: if httptest is already added to these files, no
additional changes will be made.