Reactjs 由于 webpack 中的 css，Mocha 测试失败

我是摩卡咖啡的新手，我正试图用它来测试一个简单的react 成分.如果react组件没有任何CSS样式，但如果react组件中的标记包含任何类名，则会抛出语法错误，则测试将通过:

测试.react js

import React from 'react';

export default class Testing extends React.Component {
  render() {
    return (
      <section>
        <form>
          <input type="text" />
        </form>
      </section>
    );
  }
}

测试.jsx

import {
  React,
  sinon,
  assert,
  expect,
  TestUtils
} from '../../test_helper';

import TestingSample from '../../../app/components/测试.react js';

describe('TestingSample component', function(){
    before('render and locate element', function(){
        var renderedComponent = TestUtils.renderIntoDocument(
            <TestingSample />
        );

        var inputComponent = TestUtils.findRenderedDOMComponentWithTag(
            renderedComponent, 'input'
        );

        this.inputElement = inputComponent.getDOMNode();
    });

    it('<input> should be of type "text"', function () {
        assert(this.inputElement.getAttribute('type') === 'text');
    });
})

测试将通过:

> mocha --opts ./test/javascripts/mocha.opts --compilers js:babel/register --recursive test/javascripts/**/*.jsx


  TestSample component
    ✓ <input> should be of type "text"


  1 passing (44ms)

在输入标记中添加类名后，出现了一个错误:

import React from 'react';
import testingStyle from '../../scss/components/landing/testing.scss';

export default class Testing extends React.Component {
  render() {
    return (
      <section>
        <form>
          <input type="text" className="testingStyle.color" placeholder="Where would you like to dine" />     
        </form>
      </section>
    );
  }
}

测试结果:

SyntaxError: /Users/../../../Documents/project/app/scss/components/landing/testing.scss: Unexpected token (1:0)
> 1 | .color {
    | ^
  2 |   color: red;
  3 | }

我在网上搜索过，但到目前为止运气不好.我错过什么了吗？请帮助我，或者给我指出正确的方向，我将不胜感激.