Fix config module for unit test

Signed-off-by: Asai Neko <sugar@sne.moe>

config/env.go

@@ -1,71 +1,12 @@
 package config
 
 import (
-	"log"
 	"os"
-	"strconv"
-	"strings"
-
-	"github.com/joho/godotenv"
 )
 
-func GetEnv(key string) string {
-	_ = godotenv.Load()
-	upperKey := strings.ToUpper(key)
-	return os.Getenv(upperKey)
-}
-
-func SetEnvConf(key string, sub string) {
-	envJoin := strings.Join([]string{key, sub}, "_")
-	env := GetEnv(envJoin)
-	confJoin := strings.Join([]string{key, sub}, ".")
-	orig := Get(confJoin)
-	if env != "" {
-		switch orig.(type) {
-		case string:
-			Set(confJoin, env)
-		case int:
-			conv, err := strconv.Atoi(env)
-			if err != nil {
-				log.Panic("[Config] Error converting string to int: ", err)
-			}
-			Set(confJoin, conv)
-		case bool:
-			switch env {
-			case "true":
-				Set(confJoin, true)
-			case "false":
-				Set(confJoin, false)
-			}
-		case []string:
-			trim := strings.TrimSpace(env)
-			trim = strings.TrimPrefix(trim, "[")
-			trim = strings.TrimSuffix(trim, "]")
-			var envArray []string
-			for _, v := range strings.Split(trim, ",") {
-				trimSub := strings.TrimPrefix(v, "\"")
-				trimSub = strings.TrimSuffix(trimSub, "\"")
-				envArray = append(envArray, trimSub)
-			}
-			Set(confJoin, envArray)
-		}
-	}
-}
-
-func EnvInit() {
-	var dict = map[string][]string{
-		"server":   {"address", "debug_mode", "file_logger", "jwt_secret"},
-		"database": {"type", "host", "name", "username", "password"},
-	}
-	for key, value := range dict {
-		for _, sub := range value {
-			SetEnvConf(key, sub)
-		}
-	}
-}
-
 func TZ() string {
-	tz := GetEnv("TZ")
+	tz := os.Getenv("TZ")
+
 	if tz == "" {
 		return "Asia/Shanghai"
 	}