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require 'test/unit'
require 'etc'
class TestSleep < Test::Unit::TestCase
def test_sleep_5sec
GC.disable
start = Time.now
sleep 5
slept = Time.now-start
bottom =
case RUBY_PLATFORM
when /linux/
4.98 if (Etc.uname[:release].split('.').map(&:to_i)<=>[2,6,18]) <= 0
when /mswin|mingw/
4.98
end
bottom ||= 5.0
assert_operator(slept, :>=, bottom)
assert_operator(slept, :<=, 6.0, "[ruby-core:18015]: longer than expected")
ensure
GC.enable
end
end
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