test_marshal.rb: test_no_internal_ids

* test/ruby/test_marshal.rb (test_no_internal_ids): test for
  r52304, no internal IDs should be exposed by Marshal.dump.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52306 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 16 insertions, 0 deletions

diff --git a/test/ruby/test_marshal.rb b/test/ruby/test_marshal.rb
index 3548850a42..5aa13369a6 100644
--- a/test/ruby/test_marshal.rb
+++ b/test/ruby/test_marshal.rb
@@ -695,4 +695,20 @@ class TestMarshal < Test::Unit::TestCase
       Marshal.load(d)
     }
   end
+
+  def test_no_internal_ids
+    opt = %w[--disable=gems]
+    args = [opt, 'Marshal.dump("",STDOUT)', true, true, encoding: Encoding::ASCII_8BIT]
+    out, err, status = EnvUtil.invoke_ruby(*args)
+    assert_empty(err)
+    assert_predicate(status, :success?)
+    expected = out
+
+    opt << "--enable=frozen-string-literal"
+    opt << "--enable=frozen-string-literal-debug"
+    out, err, status = EnvUtil.invoke_ruby(*args)
+    assert_empty(err)
+    assert_predicate(status, :success?)
+    assert_equal(expected, out)
+  end
 end