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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-03-13 01:00:08 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-03-13 01:00:08 +0000 |
commit | 0faf01862435676ba15552b99f282ba49dba620a (patch) | |
tree | 163440687c2a808fcab7ddecbf4e14fea3889818 /spec/ruby/core | |
parent | 3438cfa729bc89514890584660d6287982986017 (diff) | |
download | ruby-0faf01862435676ba15552b99f282ba49dba620a.tar.gz |
Bug Fix Enumerator::Lazy#uniq state for multiple call
* enumerator.c (lazy_uniq_i): create new hash for each calls.
[Fix GH-1820]
Currently
2.5.0-preview1 :001 > arr = (0..100).lazy.uniq{|i| i % 10}
=> #<Enumerator::Lazy: #<Enumerator::Lazy: 0..100>:uniq>
2.5.0-preview1 :002 > arr.to_a
=> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
2.5.0-preview1 :003 > arr.to_a
=> []
Expected
arr.to_a to always return same output
From: Anmol Chopra <anmolchopra@rocketbox.in>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62731 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/ruby/core')
-rw-r--r-- | spec/ruby/core/enumerator/lazy/uniq_spec.rb | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/spec/ruby/core/enumerator/lazy/uniq_spec.rb b/spec/ruby/core/enumerator/lazy/uniq_spec.rb index ca74cf4062..d31e816faf 100644 --- a/spec/ruby/core/enumerator/lazy/uniq_spec.rb +++ b/spec/ruby/core/enumerator/lazy/uniq_spec.rb @@ -3,6 +3,26 @@ require_relative 'fixtures/classes' ruby_version_is '2.4' do describe 'Enumerator::Lazy#uniq' do + context 'without block' do + before :each do + @lazy = [0, 1, 0, 1].to_enum.lazy.uniq + end + + it 'returns a lazy enumerator' do + @lazy.should be_an_instance_of(Enumerator::Lazy) + @lazy.force.should == [0, 1] + end + + it 'return same value after rewind' do + @lazy.force.should == [0, 1] + @lazy.force.should == [0, 1] + end + + it 'sets the size to nil' do + @lazy.size.should == nil + end + end + context 'when yielded with an argument' do before :each do @lazy = [0, 1, 2, 3].to_enum.lazy.uniq(&:even?) @@ -13,6 +33,11 @@ ruby_version_is '2.4' do @lazy.force.should == [0, 1] end + it 'return same value after rewind' do + @lazy.force.should == [0, 1] + @lazy.force.should == [0, 1] + end + it 'sets the size to nil' do @lazy.size.should == nil end @@ -31,6 +56,12 @@ ruby_version_is '2.4' do @lazy = enum.lazy end + it 'return same value after rewind' do + enum = @lazy.uniq { |_, label| label.downcase } + enum.force.should == [[0, 'foo'], [2, 'bar']] + enum.force.should == [[0, 'foo'], [2, 'bar']] + end + it 'returns all yield arguments as an array' do @lazy.uniq { |_, label| label.downcase }.force.should == [[0, 'foo'], [2, 'bar']] end |