code: function(actual, expected, maxDifference, message) {
  		var passes = (actual === expected) || Math.abs(actual - expected) <= maxDifference;
  		QUnit.push(passes, actual, expected, message);
  	}
docs: Checks that the first two arguments are equal, or are numbers close enough to be considered equal
  based on a specified maximum allowable difference.
  
  @example close(3.141, Math.PI, 0.001);
  
  @param Number actual
  @param Number expected
  @param Number maxDifference (the maximum inclusive difference allowed between the actual and expected numbers)
  @param String message (optional)