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process.c: fix rubyspec of Process.groups

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getgroups(2) may return a GID list that includes duplicated GIDs.
The behavior is totaly depends on what OS is used.

This commit fixes the example of Process.groups so that the example
is independent of this OS-dependent features.

Additonaly, this commit adds the description of such system-dependent
characteristics of Process.groups.

[ruby-dev:50603] [Bug #14969]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64265 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
mrkn 2018-08-10 05:18:03 +00:00
parent 6c70fede0c
commit c0d1a46fc3
2 changed files with 15 additions and 2 deletions
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4
spec/ruby/core/process/groups_spec.rb
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@ -6,8 +6,8 @@ describe "Process.groups" do
groups = `id -G`.scan(/\d+/).map { |i| i.to_i }
gid = Process.gid
expected = (groups.sort - [gid]).sort
actual = (Process.groups - [gid]).sort
expected = (groups.sort - [gid]).uniq.sort
actual = (Process.groups - [gid]).uniq.sort
actual.should == expected
end
end