diff --git a/pkg/util/ip_test.go b/pkg/util/ip_test.go
new file mode 100644
index 00000000..82976be8
--- /dev/null
+++ b/pkg/util/ip_test.go
@@ -0,0 +1,36 @@
+package util
+
+import "testing"
+
+func TestGetIPLoc(t *testing.T) {
+	type args struct {
+		ip string
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "test1",
+			args: args{
+				ip: "",
+			},
+			want: "",
+		},
+		{
+			name: "test2",
+			args: args{
+				ip: "103.197.70.244",
+			},
+			want: "香港",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := GetIPLoc(tt.args.ip); got != tt.want {
+				t.Errorf("GetIPLoc() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
diff --git a/pkg/util/iploc/iploc.go b/pkg/util/iploc/iploc.go
index 0a103738..3ccfa1b7 100644
--- a/pkg/util/iploc/iploc.go
+++ b/pkg/util/iploc/iploc.go
@@ -4,6 +4,7 @@ import (
 	_ "embed"
 	"encoding/binary"
 	"net"
+	"strings"
 
 	"github.com/yinheli/mahonia"
 )
@@ -21,6 +22,9 @@ const (
 
 // Find get country and city base ip
 func Find(ip string) (string, string) {
+	if strings.Trim(ip, " ") == "" {
+		return "", ""
+	}
 	offset := searchIndex(binary.BigEndian.Uint32(net.ParseIP(ip).To4()))
 	if offset <= 0 {
 		return "", ""
diff --git a/pkg/util/md5_test.go b/pkg/util/md5_test.go
new file mode 100644
index 00000000..0bab593f
--- /dev/null
+++ b/pkg/util/md5_test.go
@@ -0,0 +1,43 @@
+package util
+
+import "testing"
+
+func TestEncodeMD5(t *testing.T) {
+	type args struct {
+		value string
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "test1",
+			args: args{
+				value: "123456",
+			},
+			want: "e10adc3949ba59abbe56e057f20f883e",
+		},
+		{
+			name: "test2",
+			args: args{
+				value: "",
+			},
+			want: "d41d8cd98f00b204e9800998ecf8427e", // really odd, why?
+		},
+		{
+			name: "test3",
+			args: args{
+				value: "paopaocestr",
+			},
+			want: "8a5033dda1a8919224c66e68d846a289",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := EncodeMD5(tt.args.value); got != tt.want {
+				t.Errorf("EncodeMD5() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}