diff --git a/docs/src/demos/Extensions/Bold/index.spec.js b/docs/src/demos/Extensions/Bold/index.spec.js
new file mode 100644
index 00000000..bb910cc4
--- /dev/null
+++ b/docs/src/demos/Extensions/Bold/index.spec.js
@@ -0,0 +1,26 @@
+context('/api/extensions/bold', () => {
+  beforeEach(() => {
+    cy.visit('/api/extensions/bold')
+
+    cy.get('.ProseMirror').window().then(window => {
+      const { editor } = window
+      editor.setContent('<p>Example Text</p>')
+      editor.focus().selectAll()
+    })
+  })
+
+  describe('bold', () => {
+    it('should make the selected text bold', () => {
+      cy.get('.demo__preview button:first').click({ force: true })
+      cy.get('.ProseMirror').contains('strong', 'Example Text')
+
+      cy.get('.demo__preview button:first').click({ force: true })
+      cy.get('.ProseMirror strong').should('not.exist')
+    })
+
+    it('should toggle the selected text bold', () => {
+      cy.get('.demo__preview button:first').dblclick({ force: true })
+      cy.get('.ProseMirror strong').should('not.exist')
+    })
+  })
+})
\ No newline at end of file
diff --git a/docs/src/demos/Extensions/Bold/index.vue b/docs/src/demos/Extensions/Bold/index.vue
index 22510d30..7416151b 100644
--- a/docs/src/demos/Extensions/Bold/index.vue
+++ b/docs/src/demos/Extensions/Bold/index.vue
@@ -45,6 +45,8 @@ export default {
         <p style="font-weight: 999">Up to font weight 999!!!</p>
       `,
     })
+
+    window.editor = this.editor
   },
 
   beforeDestroy() {