我的第二次测试失败了。
1) test it jumps when it can (RunnerTest)
test/runner_test.exs:15
No message matching %{y: 1} after 100ms.
The process mailbox is empty.
stacktrace:
test/runner_test.exs:18: (test)
defmodule RunnerTest do
use ExUnit.Case
doctest Runner
setup_all do
{:ok, pid: spawn(fn -> Runner.input() end)}
end
test "it increases its x position", state do
avatar = %{x: 0, y: 0}
send state[:pid], {:run, self, avatar}
assert_receive %{x: 1}
end
test "it jumps when it can", state do
avatar = %{x: 0, y: 0}
send state[:pid], {:jump, self, avatar}
assert_receive %{y: 1}
end
end
流道模块:
defmodule Runner do
def input do
receive do
{:run, sender, mover} -> send sender, run(mover)
{:jump, sender, mover} -> send sender, jump(mover)
end
end
defp run(mover) do
Map.merge(mover, %{x: mover.x + 1})
end
defp jump(mover) do
case {mover.y} do
{0} ->
Map.merge(mover, %{y: mover.y + 1})
_ ->
mover
end
end
end
该测试通过:
test "it jumps when it can", state do
avatar = %{x: 0, y: 0}
pid = spawn(fn -> Runner.input() end)
send pid, {:jump, self, avatar}
assert_receive %{y: 1}
end
为什么 1 个测试(运行)与 setup 一起工作,而不是另一个(jump)?