reactjs – React 13.3 unmountComponentAtNode()错误：目标容器

Error: Invariant Violation: unmountComponentAtNode(…): Target
container is not a DOM element.

我正在使用this blog post使用Jasmine测试我的代码.此代码中发生错误：

describe("A component",function() {

  var instance;
  var container = document.createElement("div");

  afterEach(function() {
    if (instance && instance.isMounted()) {
      // Only components with a parent will be unmounted
      React.unmountComponentAtNode(instance.getDOMNode().parent);
    }
  });
  ...rest of test suite...
  // the instances of renderIntoDocument that cause the failure look like the below
  it("Causes my test suite to fail.",function() {
    instance = TestUtils.renderIntoDocument(<MyReactElement/>);
  });
)};

我知道getDOMNode()已被弃用,但这不是造成错误的原因.

当我检查instance.getDOMNode()时,它返回给定的实例,但是当它出错时,instance.getDOMNode().parent是未定义的.在此未定义变量上调用React.unmountComponentAtNode会导致错误.

像this one这样的答案表明存在某种竞争条件,但我不确定这将如何适用于我的测试套件.谢谢你的帮助！