1b86d90136
In Ruby 2.3 or later, `String#+@` is available and `+@` is faster than `dup`. ```ruby # frozen_string_literal: true require "bundler/inline" gemfile(true) do source "https://rubygems.org" gem "benchmark-ips" end Benchmark.ips do |x| x.report('+@') { +"" } x.report('dup') { "".dup } x.compare! end ``` ``` $ ruby -v benchmark.rb ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux] Warming up -------------------------------------- +@ 282.289k i/100ms dup 187.638k i/100ms Calculating ------------------------------------- +@ 6.775M (± 3.6%) i/s - 33.875M in 5.006253s dup 3.320M (± 2.2%) i/s - 16.700M in 5.032125s Comparison: +@: 6775299.3 i/s dup: 3320400.7 i/s - 2.04x slower ```
26 lines
514 B
Ruby
26 lines
514 B
Ruby
# frozen_string_literal: true
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begin
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require "pty"
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rescue LoadError
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end
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module ConsoleHelpers
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def assert_output(expected, io, timeout = 10)
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timeout = Time.now + timeout
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output = +""
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until output.include?(expected) || Time.now > timeout
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if IO.select([io], [], [], 0.1)
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output << io.read(1)
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end
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end
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assert_includes output, expected, "#{expected.inspect} expected, but got:\n\n#{output}"
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end
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def available_pty?
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defined?(PTY) && PTY.respond_to?(:open)
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end
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end
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