reactjs – 在react material-ui菜单中测试嵌套菜单项

这是我正在尝试构建的测试的简单版本：

describe("menu",() => {
 it("should click on nested nested menu items",() => {
    const testOnClickSpy = Sinon.spy(() => {});
    const component = mount(
      <MuiThemeProvider><Menu>
        <MenuItem 
          primaryText={<span id="test">test</span>} onTouchTap={testOnClickSpy}
          menuItems={ <MenuItem  primaryText={<span id="nested">nested</span>} /> }/>
        </Menu></MuiThemeProvider>
    );

    simulateEvent(component.find("#test"),"touchTap");

    expect(component.find("#test").exists()).toBe(true);  // Works fine.
    expect(testOnClickSpy.callCount).toBe(1); // Works fine.
    component.update(); // <--- Does not seem to do anything?
    expect(component.find("#nested").exists()).toBe(true); // <--- Because this item cannot be found?
  }) 
})

我正在使用此simulateEvent来模拟触摸式点击：

require("react-tap-event-plugin")();
function simulateEvent(wrappedTarget,eventType) {
    const domNode = findDOMNode(wrappedTarget["node"]);
    Simulate[eventType](domNode);
}

我使用的是React 15.6.1,material-ui 0.18.6,Enzyme 2.9.1 Jest 20.0.4

也许相关？ React,Jest and Material-UI: How to test for content rendered in a modal or popover