old_contents: exports.tests = [
  	{
  		css: '.foo body > h2 {}',
  		metrics: {
  			redundantBodySelectors: 1
  		}
  	},
  	{
  		css: 'body ul li a {}',
  		metrics: {
  			redundantBodySelectors: 1
  		}
  	},
  	{
  		css: 'body#foo ul li a {}',
  		metrics: {
  			redundantBodySelectors: 1
  		}
  	},
  	{
  		css: 'body > h1 {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: 'html > body #foo .bar {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: 'body {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: 'body.mainpage {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: 'body.foo ul li a {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: 'html.modal-popup-mode body {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	}
  ];
  
new_contents: exports.tests = [
  	{
  		css: '.foo body > h2 {}',
  		metrics: {
  			redundantBodySelectors: 1
  		}
  	},
  	{
  		css: 'body ul li a {}',
  		metrics: {
  			redundantBodySelectors: 1
  		}
  	},
  	{
  		css: 'body#foo ul li a {}',
  		metrics: {
  			redundantBodySelectors: 1
  		}
  	},
  	{
  		css: 'body > h1 {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: 'html > body #foo .bar {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: 'body {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: 'body.mainpage {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: 'body.foo ul li a {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: 'html.modal-popup-mode body {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	},
  	{
  		css: '.has-modal > body {}',
  		metrics: {
  			redundantBodySelectors: 0
  		}
  	}
  ];
  
subject: Add a test case for #49