diff --git a/internal/client/state_test.go b/internal/client/state_test.go
index 4939f73..f473187 100644
--- a/internal/client/state_test.go
+++ b/internal/client/state_test.go
@@ -1,20 +1,36 @@
 package client
 
 import (
-	"bytes"
+	"github.com/stretchr/testify/assert"
+	"io/ioutil"
 	"testing"
 )
 
-func TestSSVtoJson(t *testing.T) {
-	ssv := "UID=iGAO85zysIyR4c09CyZSLdNhtP/ckcYu7nIPI082AHA=;PublicKey=IYoUzkle/T/kriE+Ufdm7AHQtIeGnBWbhhlTbmDpUUI=;ServerName=www.bing.com;NumConn=4;MaskBrowser=chrome;"
+func TestParseConfig(t *testing.T) {
+	ssv := "UID=iGAO85zysIyR4c09CyZSLdNhtP/ckcYu7nIPI082AHA=;PublicKey=IYoUzkle/T/kriE+Ufdm7AHQtIeGnBWbhhlTbmDpUUI=;" +
+		"ServerName=www.bing.com;NumConn=4;MaskBrowser=chrome;ProxyMethod=shadowsocks;EncryptionMethod=plain"
 	json := ssvToJson(ssv)
-	expected := []byte(`{"UID":"iGAO85zysIyR4c09CyZSLdNhtP/ckcYu7nIPI082AHA=","PublicKey":"IYoUzkle/T/kriE+Ufdm7AHQtIeGnBWbhhlTbmDpUUI=","ServerName":"www.bing.com","NumConn":4,"MaskBrowser":"chrome"}`)
-	if !bytes.Equal(expected, json) {
-		t.Error(
-			"For", "ssvToJson",
-			"expecting", string(expected),
-			"got", string(json),
-		)
-	}
+	expected := []byte(`{"UID":"iGAO85zysIyR4c09CyZSLdNhtP/ckcYu7nIPI082AHA=","PublicKey":"IYoUzkle/T/kriE+Ufdm7AHQtIeGnBWbhhlTbmDpUUI=","ServerName":"www.bing.com","NumConn":4,"MaskBrowser":"chrome","ProxyMethod":"shadowsocks","EncryptionMethod":"plain"}`)
+
+	t.Run("byte equality", func(t *testing.T) {
+		assert.Equal(t, expected, json)
+	})
+
+	t.Run("struct equality", func(t *testing.T) {
+		tmpConfig, _ := ioutil.TempFile("", "ck_client_config")
+		_, _ = tmpConfig.Write(expected)
+		parsedFromSSV, err := ParseConfig(ssv)
+		assert.NoError(t, err)
+		parsedFromJson, err := ParseConfig(tmpConfig.Name())
+		assert.NoError(t, err)
+
+		assert.Equal(t, parsedFromJson, parsedFromSSV)
+	})
+
+	t.Run("empty file", func(t *testing.T) {
+		tmpConfig, _ := ioutil.TempFile("", "ck_client_config")
+		_, err := ParseConfig(tmpConfig.Name())
+		assert.Error(t, err)
+	})
 
 }