Implemented shareable_constant_value

It does shallow freeze only for now.

1 files changed, 17 insertions, 0 deletions

diff --git a/test/ruby/test_parse.rb b/test/ruby/test_parse.rb
index 1ed92d59a4..f12b61019b 100644
--- a/test/ruby/test_parse.rb
+++ b/test/ruby/test_parse.rb
@@ -1178,6 +1178,23 @@ x = __ENCODING__
     assert_warning(/invalid value/) do
       assert_valid_syntax("# shareable_constant_value: invalid-option", verbose: true)
     end
+    a = Class.new.class_eval("#{<<~"begin;"}\n#{<<~'end;'}")
+    begin;
+      # shareable_constant_value: true
+      A = []
+    end;
+    assert_predicate(a, :frozen?)
+    a, b = Class.new.class_eval("#{<<~"begin;"}\n#{<<~'end;'}")
+    begin;
+      # shareable_constant_value: false
+      class X # shareable_constant_value: true
+        A = []
+      end
+      B = []
+      [X::A, B]
+    end;
+    assert_predicate(a, :frozen?)
+    assert_not_predicate(b, :frozen?)
   end
 
 =begin