text: const pathModule = require('path');
  const expect = require('../../unexpected-with-plugins');
  const AssetGraph = require('../../../lib/AssetGraph');
  
  describe('relations/CssAlphaImageLoader', function () {
    it('should handle a simple test case', async function () {
      const assetGraph = new AssetGraph({
        root: pathModule.resolve(
          __dirname,
          '../../../testdata/relations/Css/CssAlphaImageLoader/'
        ),
      });
      await assetGraph.loadAssets('index.html');
      await assetGraph.populate();
  
      expect(assetGraph, 'to contain relations', 'CssAlphaImageLoader', 3);
  
      assetGraph.findAssets({
        fileName: 'foo.png',
      })[0].url = `${assetGraph.root}images/quux.png`;
  
      expect(
        assetGraph.findRelations({ type: 'CssAlphaImageLoader' }),
        'to satisfy',
        [
          { href: '/images/quux.png' },
          { href: '/bar.png' },
          { href: '/images/quux.png' },
        ]
      );
      const cssRules = assetGraph.findAssets({ type: 'Css' })[0].parseTree.nodes;
      expect(
        cssRules[0].nodes[0].value,
        'to match',
        /src='\/images\/quux\.png'.*src='\/bar\.png'/
      );
      expect(cssRules[1].nodes[0].value, 'to match', /src='\/images\/quux\.png'/);
  
      assetGraph.findRelations({ type: 'CssAlphaImageLoader' })[0].detach();
      assetGraph.findRelations({ type: 'CssAlphaImageLoader' })[1].detach();
  
      expect(
        assetGraph.findAssets({ type: 'Css' })[0].text,
        'to contain',
        'body {\n}'
      ).and('to contain', 'div {\n}');
    });
  });
  