code: function getPositionWhereCanIGoFromArray(isBlack, positions) {
      var _getPositionFromArray = getPositionFromArray(_ramda2.default.head(positions)),
          x = _getPositionFromArray.x,
          y = _getPositionFromArray.y;
  
      return {
          x: x, y: y, isBlack: isBlack,
          whereCanIGo: _ramda2.default.tail(positions).map(getPositionFromArray)
      };
  }
docs: Gets an array like [[0, 7], [0, 6], [1, 6]],
  where [[positionX, positionY], ...[[whereCanIGoX, whereCanIGoY]]]
  then returns IPiece.
  
  Used to create clean test data.