Erlang eunit 测试已跳过（未更改代码！）

Question

我的测试失败了。我做了一些更改，取消了它们，运行再次测试。我没有失败，而是得到了这个。

我的所有 .beam 文件都存在。我的 git status 没有显示任何变化。

=====================================================
  Failed: 0.  Skipped: 0.  Passed: 0.
One or more tests were cancelled.
error
60> room:test().

=ERROR REPORT==== 14-Feb-2017::19:36:57 ===
** Generic server <0.1375.0> terminating
** Last message in was {join,#{auth => "auth",name => "Blandline"}}
** When Server state == {<0.1376.0>,<0.1379.0>,<0.1380.0>}
** Reason for termination ==
** {function_clause,
       [{table,terminate,
            [{{case_clause,{ok,#{x => "Blandline"}}},
              [{table,handle_call,3,[{file,"table.erl"},{line,15}]},
               {gen_server,try_handle_call,4,
                   [{file,"gen_server.erl"},{line,615}]},
               {gen_server,handle_msg,5,[{file,"gen_server.erl"},{line,647}]},
               {proc_lib,init_p_do_apply,3,
                   [{file,"proc_lib.erl"},{line,247}]}]},
             {<0.1376.0>,<0.1379.0>,<0.1380.0>}],
            [{file,"table.erl"},{line,47}]},
        {gen_server,try_terminate,3,[{file,"gen_server.erl"},{line,629}]},
        {gen_server,terminate,7,[{file,"gen_server.erl"},{line,795}]},
        {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]}
room: firstMove_test...*skipped*
undefined
*unexpected termination of test process*
::{function_clause,[{table,terminate,
                           [{{case_clause,{ok,#{x => "Blandline"}}},
                             [{table,handle_call,3,[...]},
                              {gen_server,try_handle_call,4,...},
                              {gen_server,handle_msg,...},
                              {proc_lib,...}]},
                            {<0.1376.0>,<0.1379.0>,<0.1380.0>}],
                           [{file,"table.erl"},{line,47}]},
                    {gen_server,try_terminate,3,
                                [{file,"gen_server.erl"},{line,629}]},
                    {gen_server,terminate,7,
                                [{file,"gen_server.erl"},{line,795}]},
                    {proc_lib,init_p_do_apply,3,
                              [{file,"proc_lib.erl"},{line,247}]}]}

=======================================================
  Failed: 0.  Skipped: 0.  Passed: 0.
One or more tests were cancelled.
error

s:s 只是 gen_server:call 的快捷方式。我正在测试此模块中的其他模块。

-module(room).
-behaviour(gen_server).
-compile(export_all).
-include_lib("eunit/include/eunit.hrl").

testRoom() ->
  {ok, R} = room:go(),
  {ok, T, _} = s:s(R, {join, #{name => "Blandline", auth => "auth"}}),
  {ok, T, _} = s:s(R, {join, #{name => "Kreutzer", auth => "auth"}}),
  {R, T}.

firstMove_test() ->
  {R, T} = testRoom(),
  {ok, #{actions := _, board := _, clock := _}} = s:s(R, {play, T, {take, x, {1,2}}, {"Blandline", "auth"}}).

badMove_test() ->
  {R, T} = testRoom(),
  {error, invalid_input} = s:s(R, {play, T, {take, x, {1,2,3}}, {"Blandline", "auth"}}).

badAuth_test() ->
  {R, T} = testRoom(),
  {error, invalid_auth} = s:s(R, {play, T, {take, x, {1,2}}, {"Blandline", "badauth"}}).

badTable_test() ->
  {R, _} = testRoom(),
  {error, bad_table} = s:s(R, {play, self(), {take, x, {1,2}}, {"Blandline", "badauth"}}).

Answer 1

如错误报告所述：

[{{case_clause,{ok,#{x => "Blandline"}}},
    [{table,handle_call,3,[{file,"table.erl"},{line,15}]},

您在文件 table.erl 第 15 行中有一个不匹配的 case 子句:-)

我认为虽然您撤消了您的更改，但测试开始失败的原因是因为您运行从 Erlang shell 进行测试而且你有一些东西（比如 gen_server）仍然运行ning 由于某些原因失败了。

换句话说，您的测试不可重复，因为它们要么没有正确拆除所有依赖项，要么因为它们需要像这样的外部依赖项 gen_server 在 Erlang 中手动启动 shell 在运行测试之前。

我强烈建议忘记 Erlang shell 到运行测试。使用 rebar3 从终端构建和运行测试。这将迫使您处理所有依赖项并进行可靠的测试。完成这项工作所花费的时间将得到充分利用:-)

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