Tests curl command generation

curl "http://example.org/path"
curl "http://example.org/path" --data-binary "123"
curl "http://example.org/path" -H "Content-Type: application/x-www-form-urlencoded" --data "1&b"
curl "http://example.org/path" -H "Content-Type: application/json" --data-binary "{\"a\":1}"