reactjs – 使用React TestUtils模拟选择选项

var selectElements = ["type_a","type_b"];

var SelectElement = React.createClass({
  render: function() {
    return (
      <option value={this.props.type}>{this.props.type}</option>
      );
  }
});

var MyForm = React.createClass({
  handleSubmit: function(e) {
    console.log("submitted");
  },render: function () {
    var selectElements = this.props.availableTypes.map(function (type) {
      return (
        <SelectElement key={type} type={type} />
        );
    });
    return (
      <form role="form" onSubmit={this.handleSubmit}>
        <select ref="type" name="type">
          <option value="">-- Choose --</option>
          {selectElements}
        </select>
        <input type="submit" value="Search"/>
      </form>
      );
  }
});

我已经尝试过这样做：

var myFormComponent = TestUtils.renderIntoDocument(<MyForm selectElements={selectElements} />);
var form = TestUtils.findRenderedDOMComponentWithTag(myFormComponent,'form');
var selectComponent = TestUtils.findRenderedDOMComponentWithTag(form,'select');

TestUtils.Simulate.change(selectComponent,{ target: { value: 'type_a' } });
TestUtils.Simulate.submit(form);

但它不行.