This function intercepts HTTP requests made through httr and raises an
informative error instead. It is what without_internet() does, minus the
automatic disabling of mocking when the context finishes.
Usage
block_requests()
Arguments
Value
Nothing; called for its side effects.
Details
Note that you in order to resume normal request behavior, you will need to
call stop_mocking() yourself---this function does not clean up after itself
as 'without_internet` does.