简单Elixir游戏服设计- 给table增加测试代码

测试驱动，先simple_table_test.exs 里增加测试吧。

目前想到的这么多，如果遗漏后续增加， 写测试代码比业务代码还是难，

好处是提前想下模块的api接口。

像我这样一下子写那么多测试，其实也不对，反馈周期太长，测试驱动就没乐趣了，

而且代码调整可能导致测试要重新调整。

（这里只是示例，以后就不这么搞了）

另外想了下， 像table这样的整装（意思是协调调用其他模块）模块，

为了方便测试，还是应该分出2种不同风格的api。

一种是返回 {:ok, table} 和 {:error, reason}的，对接逻辑

一种是纯粹操作table的， 方便测试用。

上测试代码先，测试肯定会失败

 test "开局：少于2个人的时候不能", %{table: table, player1: player1} do
       assert {:error, ErrorMsg.player_not_enough} == table |> SimpleTable.add_seat |> SimpleTable.start(player1)
  end

  test "开局：正在玩中不能", %{table: table, player1: player1} do
    assert {:error, ErrorMsg.can_not_start_when_playing} == table |> SimpleTable.set_playing |> SimpleTable.start(player1)
  end

  test "开局： 准备阶段且人数至少2, 且只有房主能开局", %{table: table, player1: player1, player2: player2} do
       table = table |> SimpleTable.set_creator(player1) 
                     |> SimpleTable.add_seat(player1) 
                     |> SimpleTable.add_seat(player2) 
      assert {:error, ErrorMsg.just_creator_can_start} == table |> SimpleTable.start(player2)
      assert {:ok, new_table} = table |> SimpleTable.start(player1)
      assert table |> SimpleTable.is_playing?
  end

  test "解散：正在玩中不能", %{table: table, player1: player1} do
    assert {:error, ErrorMsg.can_not_dismiss_when_playing} == table |> SimpleTable.set_playing |> SimpleTable.dismiss(player1)
  end

  test "解散：准备阶段只有房主可以", %{table: table, player1: player1, player2: player2} do
     table = table |> SimpleTable.set_creator(player1)
     assert {:error, ErrorMsg.just_creator_can_dismiss} == table |> SimpleTable.dismiss(player2)
     assert {:ok, new_table} = table |> SimpleTable.dismiss(player1) 
     assert new_table |> SimpleTable.is_dismiss?
  end 

  test "加入：正在玩中不能（以后支持？）", %{table: table, player1: player1} do
    assert {:error, ErrorMsg.can_not_join_new_player_when_playing} == table |> SimpleTable.set_playing |> SimpleTable.join(player1)
  end

  test "加入：准备阶段可以", %{table: table, player1: player1} do
    assert {:ok, _new_table} = table |> SimpleTable.join(player1) 
  end

  test "加入: 重复不可以", %{table: table, player1: player1} do
    assert {:error, ErrorMsg.repeated_join} == table |> SimpleTable.add_seat(player1) |> SimpleTable.join(player1)
  end

  test "退出：正在玩中不能（以后支持？）", %{table: table, player1: player1} do
    assert {:error, ErrorMsg.can_not_quit_when_playing} == table |> SimpleTable.set_playing |> SimpleTable.quit(player1)
  end

  test "退出：房主不能（以后支持？)", %{table: table, player1: player1} do
    assert {:error, ErrorMsg.can_not_quit_when_creator} == table |> SimpleTable.set_creator(player1) |> SimpleTable.quit(player1)
  end

  test "测试发牌", %{table: table, player1: player1, player2: player2} do
      cards = [{1, 1}, {1, 2}, {1, 3}, {1, 4}, {1, 5}, {1, 6}]
      table = table |> SimpleTable.set_cards(cards)
                    |> SimpleTable.add_seat(player1)
                    |> SimpleTable.add_seat(player2)
                    |> SimpleTable.init_deal
      assert [{1, 1}, {1, 2}] == table |> SimpleTable.find_seat(player1) |> Seat.get_cards
      assert [{1, 3}, {1, 4}] == table |> SimpleTable.find_seat(player2) |> Seat.get_cards
  end

  test "补牌: 非玩中不能", %{table: table, player1: player1} do
     assert {:error, ErrorMsg.can_not_deal_when_not_playing} == table |> SimpleTable.deal_one(player1)
  end

  test "补牌: 已经翻牌不能", %{table: table, player1: player1} do
     seat = Seat.init(player1) |> Seat.open
     assert {:error, ErrorMsg.can_not_make_up_when_open} == table |> SimpleTable.update_seat(seat) |> SimpleTable.make_up(player1)
  end

  test "补牌: 已经三张了不能再补", %{table: table, player1: player1} do
     seat = Seat.init(player1) |> Seat.add_cards([1, 2, 3]) 
     assert {:error, ErrorMsg.can_not_make_up_when_full} == table |> SimpleTable.update_seat(seat) |> SimpleTable.make_up(player1)
  end

  test "翻牌: 不是天公牌不能", %{table: table, player1: player1} do
    seat = Seat.init(player1) |> Seat.add_cards([{1, 2}, {1, 5}])
    assert {:error, ErrorMsg.just_tian_gong_can_open} == table |> SimpleTable.update_seat(seat) |> SimpleTable.open(player1)
  end

  test "翻牌: 已经翻过了不能", %{table: table, player1: player1} do
    seat = Seat.init(player1) |> Seat.open
    assert {:error, ErrorMsg.repeated_open} == table |> SimpleTable.update_seat(seat) |> SimpleTable.open(player1)
  end

回头我们补上代码，让测试通过。

其实数据操作的测试和逻辑操作的测试分成2个测试文件会更清晰点，

我就不做了，还是用1个文件。