add config_test.go

config/config.go

@@ -77,10 +77,14 @@ type Config struct {
 
 var config *Config
 
-// LoadConfiguration loads the configuration from the disk.
+func LoadConfiguration(path *string) error {
-func LoadConfiguration() error {
+	if path != nil {
-	viper.SetConfigName("config")
+		viper.SetConfigFile(*path)
-	viper.AddConfigPath(".")
+	} else {
+		viper.AddConfigPath("./")
+		viper.SetConfigName("config")
+	}
+
 	// Find and read the config file
 	if err := viper.ReadInConfig(); err != nil {
 		return err

config/config_test.go

@@ -0,0 +1,15 @@
+package config
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+var configFile = "../config.example.json"
+
+func TestLoadConfiguraiton(t *testing.T) {
+	err := LoadConfiguration(&configFile)
+	assert.Nil(t, err)
+	assert.Equal(t, Get().Web.ListenHost, "0.0.0.0")
+}

main.go

@@ -16,7 +16,7 @@ const (
 
 func main() {
 	fmt.Println("Loading configuration")
-	if err := config.LoadConfiguration(); err != nil {
+	if err := config.LoadConfiguration(nil); err != nil {
 		log.WithError(err).Fatal("Failed to find configuration file")
 	}
 	tools.ConfigureLogging()