From: "YO4 (Yoshinao Muramatsu) via ruby-core" <ruby-core@...>
Date: 2024-12-03T15:33:52+00:00
Subject: [ruby-core:120089] [Ruby master Bug#20929] TestTime have an assertion different from current implementation.

Issue #20929 has been reported by YO4 (Yoshinao Muramatsu).

----------------------------------------
Bug #20929: TestTime have an assertion different from current implementation.
https://bugs.ruby-lang.org/issues/20929

* Author: YO4 (Yoshinao Muramatsu)
* Status: Open
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
test/ruby/test_time.rb have following assersion function.
```
  def assert_zone_encoding(time)
    zone = time.zone
    assert_predicate(zone, :valid_encoding?)
    if zone.ascii_only?
      assert_equal(Encoding::US_ASCII, zone.encoding)
    else
      enc = Encoding.default_internal || Encoding.find('locale')
      assert_equal(enc, zone.encoding)
    end
  end
```
In current implementation, Time#zone are returned in US_ASCII or locale encoding, which does not seem to take into account the default_internal.
```
C:\>ruby -e "puts Time.now.zone"
������ (���������)

C:\>ruby -e "puts Time.now.zone.encoding"
Windows-31J

C:\>ruby -EWindows-31J:UTF-8 -e "puts Time.now.zone"
������ (���������)

C:\>ruby -EWindows-31J:UTF-8 -e "puts Time.now.zone.encoding"
Windows-31J

```




-- 
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