[英]How to run ExUnit tests within IEx
I'm trying to launch IEx.pry
within a test.我正在尝试在测试中启动
IEx.pry
。 However I cannot get to run the tests within an iex session.但是我无法在 iex 会话中运行测试。 Note that I'm not using mix.
请注意,我没有使用混合。
ExUnit.start
defmodule Calc do
def add(a,b) do
a + b
end
end
defmodule TheTest do
use ExUnit.Case
test "adds two numbers" do
require IEx
IEx.pry
assert Calc.add(1, 2) == 3
end
end
I try run it with ExUnit.run
hangs and eventually times out:我尝试在
ExUnit.run
挂起的情况下运行它并最终超时:
manuel@laptop:~/exercism/elixir/nucleotide-count$ iex test.exs
Erlang/OTP 18 [erts-7.3] [source] [64-bit] [smp:4:4] [async-threads:10] [kernel-poll:false]
Interactive Elixir (1.3.4) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)> ExUnit.run
** (exit) exited in: GenServer.call(ExUnit.Server, {:take_async_cases, 8}, 60000)
** (EXIT) time out
(elixir) lib/gen_server.ex:604: GenServer.call/3
(ex_unit) lib/ex_unit/runner.ex:71: ExUnit.Runner.loop/2
(stdlib) timer.erl:166: :timer.tc/1
(ex_unit) lib/ex_unit/runner.ex:13: ExUnit.Runner.run/2
The code is loaded correctly and I can invoke it directly with TheTest."test adds two numbers"({})
.代码已正确加载,我可以直接使用
TheTest."test adds two numbers"({})
调用它TheTest."test adds two numbers"({})
。 But I was hoping to do this launching the whole suite.但我希望这样做可以启动整个套件。
I am assuming you are not using mix
.我假设您没有使用
mix
。 You need to load the test cases to the ExUnit
server before running them.在运行之前,您需要将测试用例加载到
ExUnit
服务器。
Before Elixir v1.6 you would load the tests like this:在 Elixir v1.6 之前,您将像这样加载测试:
ExUnit.Server.cases_loaded()
And after Elixir v1.6 you would load them like this (thanks to @jeffreymatthias):在 Elixir v1.6 之后,您将像这样加载它们(感谢 @jeffreymatthias):
ExUnit.Server.modules_loaded()
So the code you should write in iex
should be:所以你应该在
iex
编写的代码应该是:
ExUnit.start()
defmodule Calc do
def add(a,b) do
a + b
end
end
defmodule TheTest do
use ExUnit.Case
test "adds two numbers" do
require IEx
IEx.pry()
assert Calc.add(1, 2) == 3
end
end
ExUnit.Server.modules_loaded() # Or ExUnit.Server.cases_loaded()
ExUnit.run()
I hope this helps.我希望这会有所帮助。
According to the ExUnit documentation , ExUnit.run/0
should only be used if you don't want to autostart your tests when you call ExUnit.start/1
.根据ExUnit 文档,
ExUnit.run/0
只应在您不想在调用ExUnit.start/1
时自动启动测试时使用。
You always have to call ExUnit.start()
which would automatically run all the tests unless you pass autorun: false
.您总是必须调用
ExUnit.start()
,它会自动运行所有测试,除非您通过autorun: false
。
alias ExUnit.Assertions
require Assertions
Assertions.assert 1==1
true
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