diff --git a/tests/unit/.eslintrc.js b/tests/unit/.eslintrc.js
index 013a195..958d51b 100644
--- a/tests/unit/.eslintrc.js
+++ b/tests/unit/.eslintrc.js
@@ -2,4 +2,4 @@ module.exports = {
   env: {
     jest: true
   }
-}
\ No newline at end of file
+}
diff --git a/tests/unit/utils/formatTime.spec.js b/tests/unit/utils/formatTime.spec.js
index 3804119..d07e414 100644
--- a/tests/unit/utils/formatTime.spec.js
+++ b/tests/unit/utils/formatTime.spec.js
@@ -1,6 +1,8 @@
 import { formatTime } from '@/utils/index.js'
 describe('Utils:formatTime', () => {
   const d = new Date('2018-07-13 17:54:01') // "2018-07-13 17:54:01"
+  const retrofit = 5 * 1000
+
   it('ten digits timestamp', () => {
     expect(formatTime((d / 1000).toFixed(0))).toBe('7月13日17时54分')
   })
@@ -8,10 +10,10 @@ describe('Utils:formatTime', () => {
     expect(formatTime(+new Date() - 1)).toBe('刚刚')
   })
   it('less two minute', () => {
-    expect(formatTime(+new Date() - 60 * 2 * 1000)).toBe('2分钟前')
+    expect(formatTime(+new Date() - 60 * 2 * 1000 + retrofit)).toBe('2分钟前')
   })
   it('less two hour', () => {
-    expect(formatTime(+new Date() - 60 * 60 * 2 * 1000)).toBe('2小时前')
+    expect(formatTime(+new Date() - 60 * 60 * 2 * 1000 + retrofit)).toBe('2小时前')
   })
   it('less one day', () => {
     expect(formatTime(+new Date() - 60 * 60 * 24 * 1 * 1000)).toBe('1天前')