Refactored config to json

internal/configuration/Configuration.go

@@ -75,12 +75,7 @@ func save() {
 	}
 	defer file.Close()
 
-	configJson, err := json.MarshalIndent(serverSettings, "", "  ")
-	if err != nil {
-		fmt.Println("Error encoding configuration:", err)
-		os.Exit(1)
-	}
-	_, err = io.Copy(file, bytes.NewReader(configJson))
+	_, err = io.Copy(file, bytes.NewReader(serverSettings.ToJson()))
 	if err != nil {
 		fmt.Println("Error writing configuration:", err)
 		os.Exit(1)

internal/models/Configuration.go

@@ -1,5 +1,10 @@
 package models
 
+import (
+	"encoding/json"
+	"log"
+)
+
 // Configuration is a struct that contains the global configuration
 type Configuration struct {
 	Authentication AuthenticationConfig `json:"Authentication"`
@@ -13,3 +18,21 @@ type Configuration struct {
 	UseSsl         bool                 `json:"UseSsl"`
 	MaxFileSizeMB  int                  `json:"MaxFileSizeMB"`
 }
+
+// ToJson returns an idented JSon representation
+func (c Configuration) ToJson() []byte {
+	result, err := json.MarshalIndent(c, "", "  ")
+	if err != nil {
+		log.Fatal("Error encoding configuration:", err)
+	}
+	return result
+}
+
+// ToString returns the object as an unidented Json string used for test units
+func (c Configuration) ToString() string {
+	result, err := json.Marshal(c)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return string(result)
+}

internal/models/Configuration_test.go

@@ -0,0 +1,42 @@
+package models
+
+import (
+	"Gokapi/internal/test"
+	"strings"
+	"testing"
+)
+
+var testConfig = Configuration{
+	Authentication: AuthenticationConfig{
+		Method:            0,
+		SaltAdmin:         "saltadmin",
+		SaltFiles:         "saltfiles",
+		Username:          "admin",
+		Password:          "adminpwhashed",
+		HeaderKey:         "",
+		OauthProvider:     "",
+		OAuthClientId:     "",
+		OAuthClientSecret: "",
+		HeaderUsers:       nil,
+		OauthUsers:        nil,
+	},
+	Port:          ":12345",
+	ServerUrl:     "https://testserver.com/",
+	RedirectUrl:   "https://test.com",
+	ConfigVersion: 11,
+	LengthId:      5,
+	DataDir:       "test",
+	MaxMemory:     50,
+	UseSsl:        true,
+	MaxFileSizeMB: 20,
+}
+
+func TestConfiguration_ToJson(t *testing.T) {
+	test.IsEqualBool(t, strings.Contains(string(testConfig.ToJson()), "\"SaltAdmin\": \"saltadmin\""), true)
+}
+
+func TestConfiguration_ToString(t *testing.T) {
+	test.IsEqualString(t, testConfig.ToString(), exptectedUnidentedOutput)
+}
+
+const exptectedUnidentedOutput = "{\"Authentication\":{\"Method\":0,\"SaltAdmin\":\"saltadmin\",\"SaltFiles\":\"saltfiles\",\"Username\":\"admin\",\"Password\":\"adminpwhashed\",\"HeaderKey\":\"\",\"OauthProvider\":\"\",\"OAuthClientId\":\"\",\"OAuthClientSecret\":\"\",\"HeaderUsers\":null,\"OauthUsers\":null},\"Port\":\":12345\",\"ServerUrl\":\"https://testserver.com/\",\"RedirectUrl\":\"https://test.com\",\"ConfigVersion\":11,\"LengthId\":5,\"DataDir\":\"test\",\"MaxMemory\":50,\"UseSsl\":true,\"MaxFileSizeMB\":20}"