Update to ruby/spec@ac878ad

1 files changed, 6 insertions, 0 deletions

diff --git a/spec/ruby/language/hash_spec.rb b/spec/ruby/language/hash_spec.rb
index 630c9d2364..d6600ddb4a 100644
--- a/spec/ruby/language/hash_spec.rb
+++ b/spec/ruby/language/hash_spec.rb
@@ -149,6 +149,12 @@ describe "Hash literal" do
     -> { {**obj} }.should raise_error(TypeError)
   end
 
+  it "raises a TypeError if the object does not respond to #to_hash" do
+    obj = 42
+    -> { {**obj} }.should raise_error(TypeError)
+    -> { {a: 1, **obj} }.should raise_error(TypeError)
+  end
+
   it "does not change encoding of literal string keys during creation" do
     binary_hash = HashStringsBinary.literal_hash
     utf8_hash = HashStringsUTF8.literal_hash