File: test_rb_str_dup.rb

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require 'test/unit'
require '-test-/string'

class Test_RbStrDup < Test::Unit::TestCase
  def test_nested_shared_non_frozen
    orig_str = "a" * GC::INTERNAL_CONSTANTS[:RVARGC_MAX_ALLOCATE_SIZE]
    str = Bug::String.rb_str_dup(Bug::String.rb_str_dup(orig_str))
    assert_send([Bug::String, :shared_string?, str])
    assert_not_send([Bug::String, :sharing_with_shared?, str], '[Bug #15792]')
  end

  def test_nested_shared_frozen
    orig_str = "a" * GC::INTERNAL_CONSTANTS[:RVARGC_MAX_ALLOCATE_SIZE]
    str = Bug::String.rb_str_dup(Bug::String.rb_str_dup(orig_str).freeze)
    assert_send([Bug::String, :shared_string?, str])
    assert_not_send([Bug::String, :sharing_with_shared?, str], '[Bug #15792]')
  end
end