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require 'test/unit'
class TestSleep < Test::Unit::TestCase
def test_sleep_5sec
GC.disable
start = Time.now
sleep 5
slept = Time.now-start
bottom = /linux/ =~ RUBY_PLATFORM && /Linux ([\d.]+)/ =~ `uname -sr` && ($1.split('.')<=>%w/2 6 18/)<1 ? 4.98 : 5.0
assert_operator(bottom, :<=, slept)
assert_operator(slept, :<=, 6.0, "[ruby-core:18015]: longer than expected")
ensure
GC.enable
end
end
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