.env

NODE_ENV=test
BASIC=basic
BASIC_EXPAND=$BASIC
MACHINE=machine_env
MACHINE_EXPAND=$MACHINE
UNDEFINED_EXPAND=$UNDEFINED_ENV_KEY
ESCAPED_EXPAND=\$ESCAPED
MONGOLAB_DATABASE=heroku_db
MONGOLAB_USER=username
MONGOLAB_PASSWORD=password
MONGOLAB_DOMAIN=abcd1234.mongolab.com
MONGOLAB_PORT=12345
MONGOLAB_URI=mongodb://${MONGOLAB_USER}:${MONGOLAB_PASSWORD}@${MONGOLAB_DOMAIN}:${MONGOLAB_PORT}/${MONGOLAB_DATABASE}

MONGOLAB_USER_RECURSIVELY=${MONGOLAB_USER}:${MONGOLAB_PASSWORD}
MONGOLAB_URI_RECURSIVELY=mongodb://${MONGOLAB_USER_RECURSIVELY}@${MONGOLAB_DOMAIN}:${MONGOLAB_PORT}/${MONGOLAB_DATABASE}

WITHOUT_CURLY_BRACES_URI=mongodb://$MONGOLAB_USER:$MONGOLAB_PASSWORD@$MONGOLAB_DOMAIN:$MONGOLAB_PORT/$MONGOLAB_DATABASE
WITHOUT_CURLY_BRACES_USER_RECURSIVELY=$MONGOLAB_USER:$MONGOLAB_PASSWORD
WITHOUT_CURLY_BRACES_URI_RECURSIVELY=mongodb://$MONGOLAB_USER_RECURSIVELY@$MONGOLAB_DOMAIN:$MONGOLAB_PORT/$MONGOLAB_DATABASE