[Bug 1965791] Re: Update tzdata to version 2022a

[Brian Murray]

And this is the command I used on Bionic:

schroot -u root -c bionic-amd64 -- bash -c "apt-get update; apt-get install -y tzdata; echo 'zdump test'; echo '----------'; zdump -v Asia/Gaza | grep 'Mar 26.*2022'; echo 'SystemV tz test'; echo '---------------'; diff <(zdump -v America/Phoenix | cut -d' ' -f2-) <(zdump -v
 SystemV/MST7 | cut -d' ' -f2-)"


** Tags removed: verification-needed verification-needed-bionic verification-needed-focal verification-needed-impish
** Tags added: verification-done verification-done-bionic verification-done-focal verification-done-impish

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Title:
  Update tzdata to version 2022a

Status in tzdata package in Ubuntu:
  Fix Released
Status in tzdata source package in Bionic:
  Fix Committed
Status in tzdata source package in Focal:
  Fix Committed
Status in tzdata source package in Impish:
  Fix Committed
Status in tzdata source package in Jammy:
  Fix Released

Bug description:
  New upstream version affecting the following timestamp:

  $region/$timezone = Asia/Gaza

  Verification is done with 'zdump'. The first timezone that gets
  changed in the updated package is dumped with 'zdump -v
  $region/$timezone_that_changed' (this needs to be greped for in
  /usr/share/zoneinfo/). [For example: 'zdump -v Asia/Gaza'.] This is
  compared to the same output after the updated package got installed.
  If those are different the verification is considered done.

  [Test Case for all releases]
  1) zdump -v Asia/Gaza | grep 'Mar.*2022'

  With the version of the package from -proposed this will show Mar 26
  not Mar 25.

  For releases with ICU timezone data verification is done using the following with dates before and after the change:
  [Test Case for releases >= 20.04 LTS]
  1) sudo apt-get install python3-icu
  2) python3 -c 'from datetime import datetime; from icu import ICUtzinfo, TimeZone; tz = ICUtzinfo(TimeZone.createTimeZone('Asia/Gaza')); print(str(tz.utcoffset(datetime(2022, 3, 26))))'

  Additionally, an upstream update of tzdata removed the 'old' SystemV
  timezones, so we should ensure that they are kept in Ubuntu 20.04 LTS
  and earlier releases. Subsequently, these should be checked for using
  the following:

  [Test Case for releases <= 20.04 LTS]
  diff <(zdump -v America/Phoenix | cut -d' ' -f2-) <(zdump -v SystemV/MST7 | cut -d' ' -f2-)

  Nothing should be returned by the above command.

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