diff --git a/test/scripts/helpers/is.js b/test/scripts/helpers/is.js
index 37c062c5e1..9b2c5d0865 100644
--- a/test/scripts/helpers/is.js
+++ b/test/scripts/helpers/is.js
@@ -5,7 +5,7 @@ describe('is', () => {
   const hexo = new Hexo(__dirname);
   const is = require('../../../lib/plugins/helper/is');
 
-  it('is_current', async() => {
+  it('is_current', async () => {
     await is.current.call({path: 'index.html', config: hexo.config}).should.eql(true);
     await is.current.call({path: 'tags/index.html', config: hexo.config}).should.eql(false);
     await is.current.call({path: 'index.html', config: hexo.config}, '/').should.eql(true);
@@ -20,28 +20,28 @@ describe('is', () => {
     await is.current.call({path: 'foo/bar', config: hexo.config}, 'foo/baz').should.eql(false);
   });
 
-  it('is_home', async() => {
+  it('is_home', async () => {
     await is.home.call({page: {__index: true}}).should.eql(true);
     await is.home.call({page: {}}).should.eql(false);
   });
 
-  it('is_post', async() => {
+  it('is_post', async () => {
     await is.post.call({page: {__post: true}}).should.eql(true);
     await is.post.call({page: {}}).should.eql(false);
   });
 
-  it('is_page', async() => {
+  it('is_page', async () => {
     await is.page.call({page: {__page: true}}).should.eql(true);
     await is.page.call({page: {}}).should.eql(false);
   });
 
-  it('is_archive', async() => {
+  it('is_archive', async () => {
     await is.archive.call({page: {}}).should.eql(false);
     await is.archive.call({page: {archive: true}}).should.eql(true);
     await is.archive.call({page: {archive: false}}).should.eql(false);
   });
 
-  it('is_year', async() => {
+  it('is_year', async () => {
     await is.year.call({page: {}}).should.eql(false);
     await is.year.call({page: {archive: true}}).should.eql(false);
     await is.year.call({page: {archive: true, year: 2014}}).should.eql(true);
@@ -50,7 +50,7 @@ describe('is', () => {
     await is.year.call({page: {archive: true, year: 2014, month: 10}}).should.eql(true);
   });
 
-  it('is_month', async() => {
+  it('is_month', async () => {
     await is.month.call({page: {}}).should.eql(false);
     await is.month.call({page: {archive: true}}).should.eql(false);
     await is.month.call({page: {archive: true, year: 2014}}).should.eql(false);
@@ -62,14 +62,14 @@ describe('is', () => {
     await is.month.call({page: {archive: true, year: 2014, month: 10}}, 12).should.eql(false);
   });
 
-  it('is_category', async() => {
+  it('is_category', async () => {
     await is.category.call({page: {category: 'foo'}}).should.eql(true);
     await is.category.call({page: {category: 'foo'}}, 'foo').should.eql(true);
     await is.category.call({page: {category: 'foo'}}, 'bar').should.eql(false);
     await is.category.call({page: {}}).should.eql(false);
   });
 
-  it('is_tag', async() => {
+  it('is_tag', async () => {
     await is.tag.call({page: {tag: 'foo'}}).should.eql(true);
     await is.tag.call({page: {tag: 'foo'}}, 'foo').should.eql(true);
     await is.tag.call({page: {tag: 'foo'}}, 'bar').should.eql(false);