[add test] add test for PR docsifyjs#1361.

Author: Koooooo-7

cypress/integration/search/config.spec.js

@@ -0,0 +1,17 @@
+context('sidebar.search', () => {
+  beforeEach(() => {
+    cy.visit('http://localhost:3000');
+  });
+
+  it('search list',()=>{
+    cy.get(':input[type=search]')
+
+    .type("npm i -g now")
+    
+    .should('have.value', 'npm i -g now');
+
+    cy.get(
+      '.results-panel>.matching-post p>em'
+    ). should('contain', 'npm i -g now');
+  })
+});