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| | # -*- encoding: binary -*-
require_relative 'helper'
require 'tempfile'
class TestCfr < Test::Unit::TestCase
def test_copy_file_range
str = 'abcde'
size = 5
src = Tempfile.new('ruby_cfr_src')
dst = Tempfile.new('ruby_cfr_dst')
assert_equal 5, src.syswrite(str)
src.sysseek(0)
begin
nr = SleepyPenguin.copy_file_range(src, dst, size)
rescue Errno::EINVAL
warn 'copy_file_range not supported (requires Linux 4.5+)'
warn "We have: #{`uname -a`}"
return
end
assert_equal nr, 5
dst.sysseek(0)
assert_equal str, dst.sysread(5)
nr = SleepyPenguin.copy_file_range(src, dst, size, off_in: 1, off_out: 0)
assert_equal 4, nr
dst.sysseek(0)
assert_equal 'bcde', dst.sysread(4)
nr = SleepyPenguin.copy_file_range(src, dst, size, off_in: 9)
assert_equal 0, nr, 'no EOFError'
ensure
dst.close!
src.close!
end
end if SleepyPenguin.respond_to?(:copy_file_range)
|