diff options
Diffstat (limited to 'spec/ruby/core/array/reverse_each_spec.rb')
| -rw-r--r-- | spec/ruby/core/array/reverse_each_spec.rb | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/spec/ruby/core/array/reverse_each_spec.rb b/spec/ruby/core/array/reverse_each_spec.rb index 28b8bfcb34..59dabcd33d 100644 --- a/spec/ruby/core/array/reverse_each_spec.rb +++ b/spec/ruby/core/array/reverse_each_spec.rb @@ -5,7 +5,7 @@ require_relative '../enumerable/shared/enumeratorized' # Modifying a collection while the contents are being iterated # gives undefined behavior. See -# http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/23633 +# https://blade.ruby-lang.org/ruby-core/23633 describe "Array#reverse_each" do before :each do @@ -38,6 +38,20 @@ describe "Array#reverse_each" do [1, 2, 3].reverse_each.size.should == 3 end + it "tolerates increasing an array size during iteration" do + array = [:a, :b, :c] + ScratchPad.record [] + i = 0 + + array.reverse_each do |e| + ScratchPad << e + array.prepend i if i < 100 + i += 1 + end + + ScratchPad.recorded.should == [:c, :a, 1] + end + it_behaves_like :enumeratorize, :reverse_each it_behaves_like :enumeratorized_with_origin_size, :reverse_each, [1,2,3] end |