From: normalperson@...
Date: 2018-02-14T22:22:04+00:00
Subject: [ruby-core:85559] [Ruby trunk Bug#14477] tzdata 2018c seems break	test suite

Issue #14477 has been reported by normalperson (Eric Wong).

----------------------------------------
Bug #14477: tzdata 2018c seems break test suite
https://bugs.ruby-lang.org/issues/14477

* Author: normalperson (Eric Wong)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: 
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
----------------------------------------
Upgraded tzdata to 2018c on both my Debian stretch (stable) and jessie
(oldstable) machines via "apt-get dist-upgrade" and noticed test failures:

```
[  4/325] TestTimeTZ#test_asia_tokyo = 0.00 s
  1) Failure:
TestTimeTZ#test_asia_tokyo [$HOME/ruby/test/ruby/test_time_tz.rb:129]:
TZ=Asia/Tokyo Time.local(1951, 5, 6, 2, 0, 0).
<"1951-05-06 03:00:00 +1000"> expected but was
<"1951-05-06 02:00:00 +1000">.

[ 62/325] TestTimeTZ#test_gen_Asia_Tokyo_24 = 0.00 s
  2) Failure:
TestTimeTZ#test_gen_Asia_Tokyo_24 [$HOME/ruby/test/ruby/test_time_tz.rb:259]:
TZ=Asia/Tokyo Time.utc(1951, 5, 5, 16, 59, 59).localtime.
<"1951-05-06 01:59:59 +0900"> expected but was
<"1951-05-06 02:59:59 +1000">.

[ 65/325] TestTimeTZ#test_gen_Asia_Tokyo_27 = 0.00 s
  3) Failure:
TestTimeTZ#test_gen_Asia_Tokyo_27 [$HOME/ruby/test/ruby/test_time_tz.rb:259]:
TZ=Asia/Tokyo Time.utc(1951, 9, 7, 16, 0, 0).localtime.
<"1951-09-08 01:00:00 +0900"> expected but was
<"1951-09-08 02:00:00 +1000">.

[ 66/325] TestTimeTZ#test_gen_Asia_Tokyo_69 = 0.00 s
  4) Failure:
TestTimeTZ#test_gen_Asia_Tokyo_69 [$HOME/ruby/test/ruby/test_time_tz.rb:277]:
TZ=Asia/Tokyo Time.local(1951, 5, 6, 1, 59, 59).
<"1951-05-06 01:59:59 +0900"> expected but was
<"1951-05-06 01:59:59 +1000">.

[ 69/325] TestTimeTZ#test_gen_Asia_Tokyo_72 = 0.00 s
  5) Failure:
TestTimeTZ#test_gen_Asia_Tokyo_72 [$HOME/ruby/test/ruby/test_time_tz.rb:295]:
TZ=Asia/Tokyo Time.local(0, 0, 1, 8, 9, 1951, nil, nil, false, nil).
<"1951-09-08 01:00:00 +0900"> expected but was
<"1951-09-08 01:00:00 +1000">.

```

Not an expert on TZ so I'll let somebody else deal with this.  Thanks.




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