content: import React from 'react';
  import { getDOMNode } from '@test/testUtils';
  import PlaceholderGraph from '../PlaceholderGraph';
  
  describe('PlaceholderGraph', () => {
    it('Should render a PlaceholderGraph', () => {
      const instance = getDOMNode(<PlaceholderGraph />);
  
      assert.equal(instance.tagName, 'DIV');
      assert.equal(instance.className, 'rs-placeholder rs-placeholder-graph');
    });
  
    it('Should have a custom style', () => {
      const fontSize = '12px';
      const instance = getDOMNode(<PlaceholderGraph style={{ fontSize }} />);
      assert.equal(instance.style.fontSize, fontSize);
    });
  
    it('Should have a custom className prefix', () => {
      const instance = getDOMNode(<PlaceholderGraph classPrefix="custom-prefix" />);
      assert.ok(instance.className.match(/\bcustom-prefix\b/));
    });
  
    it('Height should be 100px', () => {
      const instance = getDOMNode(<PlaceholderGraph height={100} />);
  
      assert.equal(instance.style.height, '100px');
    });
  
    it('Width should be 100px', () => {
      const instance = getDOMNode(<PlaceholderGraph width={100} />);
  
      assert.equal(instance.style.width, '100px');
    });
  
    it('Should has animation', () => {
      const instance = getDOMNode(<PlaceholderGraph active />);
  
      assert.include(Array.from(instance.classList), 'rs-placeholder-active');
    });
  });
  