fix ParseByFormat bug

Author: kuafuRace

parser.go

@@ -10,9 +10,7 @@ import (
 // 将标准格式时间字符串解析成 Carbon 实例
 func (c Carbon) Parse(value string, timezone ...string) Carbon {
 	if len(timezone) > 0 {
-		loc, err := getLocationByTimezone(timezone[len(timezone)-1])
-		c.Loc = loc
-		c.Error = err
+		c.loc, c.Error = getLocationByTimezone(timezone[len(timezone)-1])
 	}
 	if c.Error != nil {
 		return c
@@ -52,9 +50,7 @@ func Parse(value string, timezone ...string) Carbon {
 // 通过格式化字符将字符串解析成 carbon 实例
 func (c Carbon) ParseByFormat(value string, format string, timezone ...string) Carbon {
 	if len(timezone) > 0 {
-		loc, err := getLocationByTimezone(timezone[len(timezone)-1])
-		c.Loc = loc
-		c.Error = err
+		c.loc, c.Error = getLocationByTimezone(timezone[len(timezone)-1])
 	}
 	if c.Error != nil {
 		return c
@@ -80,17 +76,15 @@ func ParseByFormat(value string, format string, timezone ...string) Carbon {
 // 通过布局字符将字符串解析成 carbon 实例
 func (c Carbon) ParseByLayout(value string, layout string, timezone ...string) Carbon {
 	if len(timezone) > 0 {
-		loc, err := getLocationByTimezone(timezone[len(timezone)-1])
-		c.Loc = loc
-		c.Error = err
+		c.loc, c.Error = getLocationByTimezone(timezone[len(timezone)-1])
 	}
 	if c.Error != nil {
 		return c
 	}
 	if value == "" || value == "0" || value == "0000-00-00 00:00:00" || value == "0000-00-00" || value == "00:00:00" {
 		return c
 	}
-	tt, err := time.ParseInLocation(layout, value, c.Loc)
+	tt, err := time.ParseInLocation(layout, value, c.loc)
 	if err != nil {
 		c.Error = invalidLayoutError(value, layout)
 		return c

parser_test.go

@@ -66,6 +66,7 @@ func TestCarbon_ParseByFormat(t *testing.T) {
 		{"2020|08|05 13:14:15", "Y|m|d H:i:s", "2020-08-05 13:14:15"},
 		{"It is 2020-08-05 13:14:15", "\\I\\t \\i\\s Y-m-d H:i:s", "2020-08-05 13:14:15"},
 		{"今天是 2020年08月05日13时14分15秒", "今天是 Y年m月d日H时i分s秒", "2020-08-05 13:14:15"},
+		{"上次上报时间:2020-08-05 13:14:15，请每日按时打卡", "上次上报时间:Y-m-d H:i:s，请每日按时打卡", "2020-08-05 13:14:15"},
 	}
 
 	for index, test := range tests {