test(utils): add more dom tests

packages/basic-modules/__tests__/utils/dom.test.ts

@@ -0,0 +1,17 @@
+/**
+ * @description utils dom
+ * @author cycleccc
+ */
+
+import { getTagName } from '../../src/utils/dom'
+import { Dom7Array } from 'dom7'
+
+describe('redo menu', () => {
+  it('get tag name', () => {
+    // 模拟一个空的 Dom7Array 对象
+    const emptyElem: Dom7Array = [] as unknown as Dom7Array
+
+    const result = getTagName(emptyElem)
+    expect(result).toBe('') // 验证返回的是空字符串
+  })
+})