回答編集履歴
2
追記
test
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[`$stdin`](https://docs.ruby-lang.org/ja/latest/method/Kernel/v/=3e.html)を[StringIO](https://docs.ruby-lang.org/ja/latest/class/StringIO.html)で書き換えるとよいと思います。
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4
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5
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----
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6
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7
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```ruby
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require "minitest/autorun"
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require "stringio"
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describe "Test" do
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describe "4 5 7" do
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$stdin = StringIO.new("4 5 7\n")
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stdout = $stdout
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$stdout = StringIO.new
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load "./target.rb"
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output = $stdout.string
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$stdout = stdout
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it "must Number" do
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_(output.lines[-1]).must_match /^\d+\n?$/
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end
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it "must 2" do
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_(output.lines[-1].to_i).must_equal 2
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end
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end
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end
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49
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```
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1
変更
test
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@@ -1 +1 @@
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1
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[`$std
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1
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[`$stdin`](https://docs.ruby-lang.org/ja/latest/method/Kernel/v/=3e.html)を[StringIO](https://docs.ruby-lang.org/ja/latest/class/StringIO.html)で書き換えるとよいと思います。
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