1 files changed, 8 insertions, 1 deletions
diff --git a/spec/ruby/core/hash/transform_values_spec.rb b/spec/ruby/core/hash/transform_values_spec.rb
index 0c9e43d621..a9098a9f2d 100644
--- a/spec/ruby/core/hash/transform_values_spec.rb
+++ b/spec/ruby/core/hash/transform_values_spec.rb
@@ -16,6 +16,13 @@ ruby_version_is "2.4" do
       @hash.transform_values(&:succ).should ==  { a: 2, b: 3, c: 4 }
     end
 
+    it "makes both hashes to share keys" do
+      key = [1, 2, 3]
+      new_hash = { key => 1 }.transform_values(&:succ)
+      new_hash[key].should == 2
+      new_hash.keys[0].should equal(key)
+    end
+
     context "when no block is given" do
       it "returns a sized Enumerator" do
         enumerator = @hash.transform_values
@@ -47,7 +54,7 @@ ruby_version_is "2.4" do
 
     it "updates self as transformed values with the given block" do
       @hash.transform_values!(&:succ)
-      @hash.should ==  { a: 2, b: 3, c: 4 }
+      @hash.should == { a: 2, b: 3, c: 4 }
     end
 
     it "partially modifies the contents if we broke from the block" do