half-finished life in lua

life.lua

local AliveCell = {}

function AliveCell:new(neighbors)
  return setmetatable({neighbors = neighbors}, {__index = self})
end

function AliveCell:willLive()
  return cell.neighbors > 1 and cell.neighbors < 4
end

local DeadCell = {}

function DeadCell:new(neighbors)
  return setmetatable({neighbors = neighbors}, {__index = self})
end

function DeadCell:willLive()
  return cell.neighbors == 3
end


describe("Cell", function()

  describe("willLive", function()

    it("returns false when it has 0 neighbors", function()
      local cell = AliveCell:new(0)
      assert_false(cell:willLive())
    end)

    it("returns false when it has 1 neighbor", function()
      local cell = AliveCell(1)
      assert_false(willLive(cell))
    end)

    describe("with 2 neighbors", function()
      it("returns true if is alive", function()
        local cell = newAliveCell(2)
        assert_true(willLive(cell))
      end)

      it("returns false if is dead", function()
        local cell = newDeadCell(2)
        assert_false(willLive(cell))
      end)
    end)

    it("return false with 4 neighbors", function()
      local cell = newAliveCell(4)
      assert_false(willLive(cell))
    end)

  end)


end)