text: import calculateSizeAndPositionData from './calculateSizeAndPositionData';
  describe('calculateSizeAndPositionData', function() {
    it('should query for size and position of each cell', function() {
      var cellSizeAndPositionGetterCalls = [];
  
      function cellSizeAndPositionGetter(_ref) {
        var index = _ref.index;
        cellSizeAndPositionGetterCalls.push(index);
        return {
          x: index * 50,
          y: 0,
          width: 50,
          height: 50,
        };
      }
  
      var _calculateSizeAndPosi = calculateSizeAndPositionData({
          cellCount: 3,
          cellSizeAndPositionGetter: cellSizeAndPositionGetter,
        }),
        sectionManager = _calculateSizeAndPosi.sectionManager;
  
      expect(cellSizeAndPositionGetterCalls).toEqual([0, 1, 2]);
      expect(sectionManager.getTotalSectionCount()).toEqual(2);
    });
    it('should throw an error if invalid metadata is returned for a cell', function() {
      expect(function() {
        return calculateSizeAndPositionData({
          cellCount: 3,
          cellSizeAndPositionGetter: function cellSizeAndPositionGetter() {},
        });
      }).toThrow();
    });
  });
  