如何使Elixir Mix测试输出更多详细

Question

在我的elixir/phoenix应用中，当我运行

时

mix test

我得到的输出如下：

$ mix test
....
Finished in 0.09 seconds
4 tests, 0 failures

对于每个测试的点，都可以成功。

如何输出成功的测试名称？

在带有RSPEC的Rails中，我曾经用目录中的.rspec文件进行此操作，看起来像：

$ cat .rspec
--color
-fd
--tty

Answer 1

要打印通过测试的名称，您可以将--trace参数传递给mix test。例如，这是httpoison当前主分支的mix test --trace的输出：

$ mix test --trace
HTTPoisonTest
Starting HTTParrot on port 8080
Starting HTTParrot on port 8433 (SSL)
Starting HTTParrot on unix socket httparrot.sock
  * test post binary body (97.1ms)
  * test https scheme (57.8ms)
  * test option follow redirect relative url (4.0ms)
  * test option follow redirect absolute url (2.6ms)
  * test put (0.6ms)
  * test request headers as a map (0.5ms)
  * test get (1.5ms)
  * test head (0.5ms)
  * test delete (1.5ms)
  * test asynchronous redirected get request (2.3ms)
  * test send cookies (4.9ms)
  * test post charlist body (0.7ms)
  * test patch (0.5ms)
  * test post form data (0.6ms)
  * test exception (6.0ms)
  * test get with params (2.8ms)
  * test asynchronous request (0.5ms)
  * test explicit http scheme (0.5ms)
  * test put without body (0.8ms)
  * test multipart upload (8.5ms)
  * test options (0.5ms)
  * test basic_auth hackney option (1.6ms)
  * test http+unix scheme (4.4ms)
  * test asynchronous request with explicit streaming using [async: :once] (304.1ms)
  * test cached request (2.1ms)
  * test post streaming body (3.8ms)
  * test char list URL (0.7ms)
HTTPoisonBaseTest
  * test request body using ExampleDefp (124.1ms)
  * test passing ssl option (110.9ms)
  * test passing connect_timeout option (109.9ms)
  * test passing recv_timeout option (103.4ms)
  * test passing proxy option (106.6ms)
  * test passing follow_redirect option (105.3ms)
  * test passing proxy option with proxy_auth (106.9ms)
  * test request raises error tuple (104.9ms)
  * test passing max_redirect option (115.6ms)
  * test request body using Example (111.6ms)

Finished in 2.0 seconds
37 tests, 0 failures
Randomized with seed 264353

您还可以通过更改test_helper.exs中的ExUnit.start行：

将此选项设置为true

ExUnit.start(trace: true)

如果要完全自定义输出，则可以实现自己的格式化（请参阅https://github.com/elixir-lang/elixir/elixir/blob/master/lib/lib/ex_unit/lib/ex_unit/cliit/cliformatter.ex，以获取一个示例;这是默认格式）并配置exunit以使用它：

ExUnit.start(formatters: [YourFormatterModule])

Answer 2

--trace是您要寻找的选项：https：//hexdocs.pm/mix/mix.tasks.tasks.test.html

希望有帮助！