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-rw-r--r--spec/ruby/core/string/each_grapheme_cluster_spec.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/spec/ruby/core/string/each_grapheme_cluster_spec.rb b/spec/ruby/core/string/each_grapheme_cluster_spec.rb
index 632f2337f1..e1fa4ae67b 100644
--- a/spec/ruby/core/string/each_grapheme_cluster_spec.rb
+++ b/spec/ruby/core/string/each_grapheme_cluster_spec.rb
@@ -1,3 +1,4 @@
+require_relative "../../spec_helper"
require_relative 'shared/chars'
require_relative 'shared/grapheme_clusters'
require_relative 'shared/each_char_without_block'
@@ -6,4 +7,10 @@ describe "String#each_grapheme_cluster" do
it_behaves_like :string_chars, :each_grapheme_cluster
it_behaves_like :string_grapheme_clusters, :each_grapheme_cluster
it_behaves_like :string_each_char_without_block, :each_grapheme_cluster
+
+ it "yields String instances for subclasses" do
+ a = []
+ StringSpecs::MyString.new("abc").each_grapheme_cluster { |s| a << s.class }
+ a.should == [String, String, String]
+ end
end