[ruby/json] Stop checking for String#@-

https://github.com/ruby/json/commit/a9e05d6ff3

Co-authored-by: Jean Boussier <jean.boussier@gmail.com>

1 files changed, 2 insertions, 14 deletions

diff --git a/test/json/json_parser_test.rb b/test/json/json_parser_test.rb
index 45474c9820..2217f2b9e8 100644
--- a/test/json/json_parser_test.rb
+++ b/test/json/json_parser_test.rb
@@ -397,10 +397,8 @@ class JSONParserTest < Test::Unit::TestCase
     assert_predicate parse('[]', :freeze => true), :frozen?
     assert_predicate parse('"foo"', :freeze => true), :frozen?
 
-    if string_deduplication_available?
-      assert_same(-'foo', parse('"foo"', :freeze => true))
-      assert_same(-'foo', parse('{"foo": 1}', :freeze => true).keys.first)
-    end
+    assert_same(-'foo', parse('"foo"', :freeze => true))
+    assert_same(-'foo', parse('{"foo": 1}', :freeze => true).keys.first)
   end
 
   def test_parse_comments
@@ -794,16 +792,6 @@ class JSONParserTest < Test::Unit::TestCase
 
   private
 
-  def string_deduplication_available?
-    r1 = rand.to_s
-    r2 = r1.dup
-    begin
-      (-r1).equal?(-r2)
-    rescue NoMethodError
-      false # No String#-@
-    end
-  end
-
   def assert_equal_float(expected, actual, delta = 1e-2)
     Array === expected and expected = expected.first
     Array === actual and actual = actual.first