authenticate() : interface conversion: interface {} is bool, not int64 (

#31)

Handle more properly authentication error

odoo.go

@@ -12,6 +12,7 @@ import (
 var (
 	errClientConfigurationInvalid = errors.New("client configuration is invalid")
 	errClientNotAuthenticate      = errors.New("client is not authenticate")
+	errClientAuthentication       = errors.New("client authentication error: please verify client configuration")
 )
 
 // ClientConfig is the configuration to create a new *Client by givin connection infomations.
@@ -281,6 +282,9 @@ func (c *Client) authenticate() error {
 		if err != nil {
 			return err
 		}
+		if _, ok := resp.(bool); ok {
+			return errClientAuthentication
+		}
 		c.uid = resp.(int64)
 		c.auth = true
 	}