From: "nobu (Nobuyoshi Nakada)" <nobu@...>
Date: 2012-05-15T17:58:06+09:00
Subject: [ruby-core:45052] [ruby-trunk - Bug #6385] mtime vie File.stat(filename).utime vs File.open(filename, 'r').mtime in Windows


Issue #6385 has been updated by nobu (Nobuyoshi Nakada).


=begin
: kolmanv (Kolman Vornovitsky) wrote:
  Here is my run on the same code seems to work :\
  Maybe the problem is at Time.at
    kolman@KOLMAN-PC ~
    $ irb
    irb(main):001:0> open('tst', 'w') { |f| f.write '123' }
    => 3
    irb(main):002:0> atime = Time.utc(2012)
    => 2012-01-01 00:00:00 UTC
    irb(main):003:0> mtime = Time.utc(2011)
    => 2011-01-01 00:00:00 UTC
    irb(main):004:0> File.utime(atime, mtime, 'tst')
    => 1
    irb(main):005:0> s = File.stat('tst')
    => #<File::Stat dev=0x2, ino=0, mode=0100644, nlink=1, uid=0, gid=0, rdev=0x2, size=3, blksize=nil, blocks=nil, atime=2012-01-01 02:00:00 +0200, mtime=2011-01-01 02:00:00 +0200, ctime=2012-05-14 08:41:26 +0200>
    irb(main):006:0> atime
    => 2012-01-01 00:00:00 UTC
    irb(main):007:0> s.atime
    => 2012-01-01 02:00:00 +0200
    irb(main):008:0> mtime
    => 2011-01-01 00:00:00 UTC
    irb(main):009:0> s.mtime
    => 2011-01-01 02:00:00 +0200
    irb(main):010:0> s.mtime.utc
    => 2011-01-01 00:00:00 UTC

Thank you, I could reproduce it with 1.9.3p179, by changing the system
timezone to "(UTC+02:00) Athens, Bucharest".

But it seems fixed already in the trunk.


=end

----------------------------------------
Bug #6385: mtime vie File.stat(filename).utime vs File.open(filename, 'r').mtime in Windows
https://bugs.ruby-lang.org/issues/6385#change-26634

Author: kolmanv (Kolman Vornovitsky)
Status: Feedback
Priority: Normal
Assignee: usa (Usaku NAKAMURA)
Category: core
Target version: 
ruby -v: ruby 1.9.3p194 (2012-04-20) [i386-mingw32]


=begin
Seems that File.stat is not working well under Windows, specifically the mtime member.
This thing maybe related to local time (timezones) which should not because time which is used is unixtime.
On Mac works fine.

Windows: ruby 1.9.3p194 (2012-04-20) [i386-mingw32]
Mac: ruby 1.9.3p202 (2012-04-27 revision 35484) [x86_64-darwin11.3.0]

To reproduce:
  RESOURCES_DIR = File.expand_path(File.dirname(__FILE__) + "/test")
  MOD_TIME_CONTENTS = Time.at 1306527039

  def test_local_os
    Dir.mkdir(RESOURCES_DIR) unless (File.exists?(RESOURCES_DIR))
    file_path = "#{RESOURCES_DIR}/local_os_test.test"
    file = File.open(file_path, "w", 0777) do |file|
      file.puts("kuku")
    end
    file_stats = File.stat(file_path)
    p "MOD_TIME_CONTENTS: #{MOD_TIME_CONTENTS}."
    p "MOD_TIME_CONTENTS: #{MOD_TIME_CONTENTS.to_i}."
    p "file_stat.mtime: #{file_stats.mtime}."
    p "file_stat.mtime: #{file_stats.mtime.to_i}."
    p "File.mtime: #{File.mtime(file_path)}."
    p "File.mtime: #{File.mtime(file_path).to_i}."
    File.utime File.atime(file_path), MOD_TIME_CONTENTS, file_path
    file_stats = File.stat(file_path)
    p "file_stat.mtime: #{file_stats.mtime}."
    p "file_stat.mtime: #{file_stats.mtime.to_i}."
    p "File.mtime: #{File.mtime(file_path)}."
    p "File.mtime: #{File.mtime(file_path).to_i}."
  
    file_mtime = nil
    file = File.open(file_path, 'r') do |file|
      p "file.open.mtime = #{file.mtime}"
      p "file.open.mtime = #{file.mtime.to_i}"
      file_mtime = file.mtime
    end
  
    assert_equal(MOD_TIME_CONTENTS, file_mtime)
  
    # !!! This fails on windows with different timezone
    assert_equal(MOD_TIME_CONTENTS, file_stats.mtime)
  end

  Second assertion fails:
    1) Failure:
  test_local_os(BBFS::FileUtils::Test::TestTimeModification) [test/file_utils/time_modification_test.rb:89]:
  <2011-05-27 20:10:39 +0000> expected but was
  <2011-05-27 18:10:39 +0000>.



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