feat:add format test case

cypress/integration/menus/format.spec.ts

@@ -0,0 +1,44 @@
+import Editor from '../../../src/editor'
+
+describe('菜单-清除格式', () => {
+
+  beforeEach(() => {
+    cy.visit('http://localhost:3000/canvas-editor/')
+
+    cy.get('canvas').first().as('canvas').should('have.length', 1)
+  })
+
+  const text = 'canvas-editor'
+  const textLength = text.length
+
+  it('清除格式', () => {
+    cy.getEditor().then((editor: Editor) => {
+      editor.listener.saved = function (payload) {
+        const data = payload.data
+
+        expect(data[0].italic).to.eq(false)
+
+        expect(data[0].bold).to.eq(false)
+      }
+
+      editor.command.executeSelectAll()
+
+      editor.command.executeBackspace()
+
+      editor.command.executeInsertElementList([{
+        value: text,
+        bold: true,
+        italic: true
+      }])
+
+      editor.command.executeSetRange(0, textLength)
+
+      cy.get('.menu-item__format')
+        .click()
+        .then(() => {
+          cy.get('@canvas').type('{ctrl}s')
+        })
+    })
+  })
+
+})