diff --git a/go.mod b/go.mod
index 8fec5a4d..23b49d0a 100644
--- a/go.mod
+++ b/go.mod
@@ -25,6 +25,7 @@ require (
 	github.com/russellhaering/goxmldsig v1.1.1
 	github.com/satori/go.uuid v1.2.0 // indirect
 	github.com/smartystreets/goconvey v1.6.4 // indirect
+	github.com/stretchr/testify v1.6.1
 	github.com/tealeg/xlsx v1.0.5
 	github.com/thanhpk/randstr v1.0.4
 	golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3
diff --git a/util/time_test.go b/util/time_test.go
new file mode 100644
index 00000000..1d1ef4c2
--- /dev/null
+++ b/util/time_test.go
@@ -0,0 +1,111 @@
+// Copyright 2021 The casbin Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_GetCurrentTime(t *testing.T) {
+	test := GetCurrentTime()
+	expected := time.Now().Format(time.RFC3339)
+
+	assert.Equal(t, test, expected, "The times not are equals")
+
+	types := reflect.TypeOf(test).Kind()
+	assert.Equal(t, types, reflect.String, "GetCurrentUnixTime should be return string")
+
+}
+
+func Test_GetCurrentUnixTime_Shoud_Return_String(t *testing.T) {
+	test := GetCurrentUnixTime()
+	types := reflect.TypeOf(test).Kind()
+	assert.Equal(t, types, reflect.String, "GetCurrentUnixTime should be return string")
+}
+
+func Test_IsTokenExpired(t *testing.T) {
+
+	type input struct {
+		createdTime string
+		expiresIn   int
+	}
+
+	type testCases struct {
+		description string
+		input       input
+		expected    bool
+	}
+
+	for _, scenario := range []testCases{
+		{
+			description: "Token emited now is valid for 60 minutes",
+			input: input{
+				createdTime: time.Now().Format(time.RFC3339),
+				expiresIn:   60,
+			},
+			expected: false,
+		},
+		{
+			description: "Token emited 60 minutes before now is valid for 60 minutes",
+			input: input{
+				createdTime: time.Now().Add(-time.Minute * 60).Format(time.RFC3339),
+				expiresIn:   61,
+			},
+			expected: false,
+		},
+		{
+			description: "Token emited 2 hours before now is Expired after 60 minutes",
+			input: input{
+				createdTime: time.Now().Add(-time.Hour * 2).Format(time.RFC3339),
+				expiresIn:   60,
+			},
+			expected: true,
+		},
+		{
+			description: "Token emited 61 minutes before now is Expired after 60 minutes",
+			input: input{
+				createdTime: time.Now().Add(-time.Minute * 61).Format(time.RFC3339),
+				expiresIn:   60,
+			},
+			expected: true,
+		},
+		{
+			description: "Token emited 2 hours before now  is velid for 120 minutes",
+			input: input{
+				createdTime: time.Now().Add(-time.Hour * 2).Format(time.RFC3339),
+				expiresIn:   121,
+			},
+			expected: false,
+		},
+		{
+			description: "Token emited 159 minutes before now is Expired after 60 minutes",
+			input: input{
+				createdTime: time.Now().Add(-time.Minute * 159).Format(time.RFC3339),
+				expiresIn:   120,
+			},
+			expected: true,
+		},
+	} {
+		t.Run(scenario.description, func(t *testing.T) {
+			result := IsTokenExpired(scenario.input.createdTime, scenario.input.expiresIn)
+			assert.Equal(t, scenario.expected, result, fmt.Sprintf("Expected %t, but was founded %t", scenario.expected, result))
+		})
+	}
+}