RSpecで試験結果項目に時刻を表示 #RSpec

試験失敗時などに外部のログを照らし合わせたいときは、項目毎に時刻が出力されるよう以下の設定を追加している。

spec_helper.rb

RSpec.configure do |c|
    c.format_docstrings { |s| "#{s} (#{Time.now.strftime('%T')})" }
end

サンプル

sample_spec.rb

require 'rspec/core'

RSpec.configure do |c|
    c.format_docstrings { |s| "#{s} (#{Time.now.strftime('%T')})" }
end

describe "NaN" do
    subject { Float::NAN }
    it { is_expected.to eq subject } # fails
    it { is_expected.to be subject } # passes
end

terminal

$ rspec -fd sample_spec.rb

NaN (04:31:20)
  should eq NaN (04:31:20) (FAILED - 1)
  should equal NaN (04:31:20)

Failures:

  1) NaN should eq NaN
     Failure/Error: it { is_expected.to eq subject } # fails

       expected: NaN
            got: NaN

       (compared using ==)
     # ./sample_spec.rb:9:in `block (2 levels) in <top (required)>'

Finished in 0.0164 seconds (files took 0.1518 seconds to load)
2 examples, 1 failure

Failed examples:

rspec ./sample_spec.rb:9 # NaN should eq NaN