2 files changed, 17 insertions, 0 deletions
diff --git a/spec/ruby/core/string/chomp_spec.rb b/spec/ruby/core/string/chomp_spec.rb
index 6fa8d7c6c5..3c20141ee7 100644
--- a/spec/ruby/core/string/chomp_spec.rb
+++ b/spec/ruby/core/string/chomp_spec.rb
@@ -158,6 +158,10 @@ describe "String#chomp" do
     it "does not taint the result when the argument is tainted" do
       "abc".chomp("abc".taint).tainted?.should be_false
     end
+
+    it "returns an empty String when the argument equals self" do
+      "abc".chomp("abc").should == ""
+    end
   end
 end
 
diff --git a/spec/ruby/core/string/shared/each_line.rb b/spec/ruby/core/string/shared/each_line.rb
index 19cf5e6d78..066b0c1040 100644
--- a/spec/ruby/core/string/shared/each_line.rb
+++ b/spec/ruby/core/string/shared/each_line.rb
@@ -27,6 +27,19 @@ describe :string_each_line, shared: true do
     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) { |part| b << part }
+    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 }