diff --git a/test/date.js b/test/date.js
index e36330690..3b1e87713 100644
--- a/test/date.js
+++ b/test/date.js
@@ -6,59 +6,59 @@ describe('date', () => {
 
     const date = new Date();
 
-    it(`m分钟前`, async () => {
+    it('m分钟前', async () => {
         expect(+new Date(parseDate('10分钟前'))).toBe(+date - 10 * 60 * 1000);
     });
 
-    it(`H小时前`, async () => {
+    it('H小时前', async () => {
         expect(+new Date(parseDate('10小时前'))).toBe(+date - 10 * 60 * 60 * 1000);
     });
 
-    it(`D天前`, async () => {
+    it('D天前', async () => {
         expect(+new Date(parseDate('10天前'))).toBe(+date - 10 * 24 * 60 * 60 * 1000);
     });
 
-    it(`M月前`, async () => {
+    it('M月前', async () => {
         expect(+new Date(parseDate('1月前'))).toBe(+date - 1 * 31 * 24 * 60 * 60 * 1000);
     });
 
-    it(`Y年前`, async () => {
+    it('Y年前', async () => {
         expect(+new Date(parseDate('1年前'))).toBe(+date - 1 * 365 * 24 * 60 * 60 * 1000);
     });
 
-    it(`今天 H:m`, async () => {
+    it('今天 H:m', async () => {
         expect(+new Date(parseDate('今天 08:00'))).toBe(+new Date('2019-1-1 08:00'));
     });
 
-    it(`昨天 H:m`, async () => {
+    it('昨天 H:m', async () => {
         expect(+new Date(parseDate('昨天 20:00'))).toBe(+new Date('2018-12-31 20:00'));
     });
 
-    it(`Y年M月D日H时`, async () => {
+    it('Y年M月D日H时', async () => {
         expect(+new Date(parseDate('2018年4月2日1时'))).toBe(+new Date('2018-4-2 01:00'));
     });
 
-    it(`Y-M-D H:m`, async () => {
+    it('Y-M-D H:m', async () => {
         expect(+new Date(parseDate('2018-4-2 02:03'))).toBe(+new Date('2018-4-2 02:03'));
     });
 
-    it(`M-D H:m`, async () => {
+    it('M-D H:m', async () => {
         expect(+new Date(parseDate('2-3 02:03'))).toBe(+new Date('2019-2-3 02:03'));
     });
 
-    it(`M月D日 H:m`, async () => {
+    it('M月D日 H:m', async () => {
         expect(+new Date(parseDate('2月3日 02:03'))).toBe(+new Date('2019-2-3 02:03'));
     });
 
-    it(`Y-M-D`, async () => {
+    it('Y-M-D', async () => {
         expect(+new Date(parseDate('2018-4-2'))).toBe(+new Date('2018-4-2'));
     });
 
-    it(`M-D`, async () => {
+    it('M-D', async () => {
         expect(+new Date(parseDate('4-2'))).toBe(+new Date('2019-4-2'));
     });
 
-    it(`H:m`, async () => {
+    it('H:m', async () => {
         expect(+new Date(parseDate('02:03'))).toBe(+new Date('2019-1-1 02:03'));
     });
 });
diff --git a/test/wait.js b/test/wait.js
new file mode 100644
index 000000000..5dfe16e82
--- /dev/null
+++ b/test/wait.js
@@ -0,0 +1,13 @@
+const wait = require('../lib/utils/wait');
+
+describe('wait', () => {
+    it('wait 0.1 second', async () => {
+        const startDate = new Date();
+
+        await wait(0.1 * 1000);
+
+        const endDate = new Date();
+        expect(endDate - startDate).toBeGreaterThanOrEqual(100);
+        expect(endDate - startDate).toBeLessThan(120);
+    });
+});