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require 'rubygems'
require 'bundler/setup'
require 'benchmark'
require 'rspec/expectations'
include RSpec::Matchers
n = 100_000
Benchmark.bm(25) do |bm|
bm.report("to_stdout with StringIO") do
n.times { expect {}.not_to output('foo').to_stdout }
end
bm.report("to_stdout with Tempfile") do
n.times { expect {}.not_to output('foo').to_stdout_from_any_process }
end
bm.report("to_stderr with StringIO") do
n.times { expect {}.not_to output('foo').to_stderr }
end
bm.report("to_stderr with Tempfile") do
n.times { expect {}.not_to output('foo').to_stderr_from_any_process }
end
end
# user system total real
# to_stdout with StringIO 0.470000 0.010000 0.480000 ( 0.467317)
# to_stdout with Tempfile 8.920000 7.420000 16.340000 ( 16.355174)
# to_stderr with StringIO 0.460000 0.000000 0.460000 ( 0.454059)
# to_stderr with Tempfile 8.930000 7.560000 16.490000 ( 16.494696)
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