Convert point server config to interface for testibility

config.go

@@ -1,28 +1,17 @@
 package core
 
-import (
-	"encoding/json"
-)
-
 // User is the user account that is used for connection to a Point
 type User struct {
 	Id ID `json:"id"` // The ID of this User.
 }
 
-type ConnectionConfig struct {
-	Protocol string `json:"protocol"`
-	File     string `json:"file"`
+type ConnectionConfig interface {
+  Protocol() string
+  Content() []byte
 }
 
-// Config is the config for Point server.
-type Config struct {
-	Port           uint16           `json:"port"` // Port of this Point server.
-	InboundConfig  ConnectionConfig `json:"inbound"`
-	OutboundConfig ConnectionConfig `json:"outbound"`
-}
-
-func LoadConfig(rawConfig []byte) (Config, error) {
-	config := Config{}
-	err := json.Unmarshal(rawConfig, &config)
-	return config, err
+type PointConfig interface {
+  Port() uint16
+  InboundConfig() ConnectionConfig
+  OutboundConfig() ConnectionConfig
 }