# Lulu Book Printing API Client [https://api.lulu.com/docs/](https://api.lulu.com/docs/) ## Testing Some of the tests require a connection to the sandbox API. Before running the tests you must copy and paste your "client key" and "client secret" from the [Sandbox API Keys Page](https://developers.sandbox.lulu.com/user-profile/api-keys) into the files `testdata/clientkey` and `testdata/clientsecret`. For example, if your client-key and client-secret were `190f024a-fded-f508-7db8-a987b1159f40` and `dSdCXch8SCIcAksu6CXd1SzvfYUUdjPs`, ```sh mkdir testdata echo 190f024a-fded-f508-7db8-a987b1159f40 >testdata/clientkey echo dSdCXch8SCIcAksu6CXd1SzvfYUUdjPs >testdata/clientsecret chmod 600 testdata/clientkey testdata/clientsecret ``` The tests make connections to Lulu's sandbox API server. Please be polite and don't run the tests too often to avoid spamming their server.