Rspec 输出匹配器应为块，但不是块

以下是我的规范中的一个片段：

上下文“给定数组[1,2,3]和块{| e |在e==1}时放置e”do

结束

以下是Rspec输出：

1） .my_每个给定的数组[1,2,3]和块{e|在e==1}时放置e打印出1并返回[1,2,3] 失败/错误：expect（subject.my_each{| e | put e if e==1}）。to output（“1\n”）。to_stdout

   expected block to output "1\n" to stdout, but was not a block
   Diff:
   @@ -1,2 +1 @@
   -1

 # ./spec/enumerable_spec.rb:30:in `block (3 levels) in <top (required)>'

预期块将“1\n”输出到标准输出，但不是块
差异：
@@ -1,2 +1 @@
-1
#./spec/enumerable_spec.rb:30:in'block（3级）in'

基于，我将预期更改为： 期望{subject.my|u每个{e|在e==1}时放入e。输出（“1\n”）。到{u stdout

   expected block to output "1\n" to stdout, but was not a block
   Diff:
   @@ -1,2 +1 @@
   -1

 # ./spec/enumerable_spec.rb:30:in `block (3 levels) in <top (required)>'