Spec for String#lines with multibyte characters

Author: chrisseaton

spec/ruby/core/string/shared/each_line.rb

@@ -27,6 +27,19 @@
     c.should == ["hello\n", "\n", "\n", "world"]
   end
 
+  it "splits strings containing multibyte characters" do
+    s = <<~EOS
+      foo
+      🤡🤡🤡🤡🤡🤡🤡
+      bar
+      baz
+    EOS
+
+    b = []
+    s.send(@method) { |s| b << s }
+    b.should == ["foo\n", "🤡🤡🤡🤡🤡🤡🤡\n", "bar\n", "baz\n"]
+  end
+
   it "taints substrings that are passed to the block if self is tainted" do
     "one\ntwo\r\nthree".taint.send(@method) { |s| s.tainted?.should == true }
 

spec/tags/core/string/each_line_tags.txt

@@ -0,0 +1 @@
+fails:String#each_line splits strings containing multibyte characters

spec/tags/core/string/lines_tags.txt

@@ -0,0 +1 @@
+fails:String#lines splits strings containing multibyte characters