salesforce module

Hello, im trying to use salesforce module but i have problem with the Authentication.

when check sent urls i notice that the module sent the Authentication url to login.salesforces.com i want to change it to teste.salesforces.com.

there is a config json file but i dont now where change to move to testing mode

{
    "global": {
        "consumerKey" : "3MVG98RqVesxRgQ4M6v.9NTGcOteApcODgo6XXXXXXh",
        "consumerSecret" : "4311XXXX",
        "securityToken" : "",
        "username": "XXXX@XXXX.com.mobdev",
        "password": "xxxxxxx"
    },
    "env:development": {}, 
    "env:test": {}, 
    "env:production": {}, 
    "os:android": {},
    "os:blackberry": {},
    "os:ios": {},
    "os:mobileweb": {},
    "dependencies": {}
}