class TestCase::Refcnt {
  use TestCase::Minimal;
  use TestCase::Simple;
  
  static method refcnt_test : int () {
    # Basic
    {
      my $minimal = new TestCase::Minimal;
      
      unless (refcnt $minimal == 1) {
        return 0;
      }
      
      my $minimal2 = $minimal;
      unless (refcnt $minimal == 2) {
        return 0;
      }
    }

    # Repeat
    {
      my $minimal = new TestCase::Minimal;
      
      unless (refcnt $minimal == 1) {
        return 0;
      }
      
      unless (refcnt $minimal == 1) {
        return 0;
      }
    }
    
    # undef
    {
      my $minimal2 : TestCase::Minimal;

      unless (refcnt $minimal2 == 0) {
        return 0;
      }
    }
    
    # Operation which use tmp var
    {
      my $nums = [1, 2, 3];
      
      unless (refcnt $nums == 1) {
        return 0;
      }
    }
    
    # Field
    {
      my $simple = new TestCase::Simple;
      
      $simple->{object_value} = new TestCase::Minimal;
      
      TestCase::Refcnt->func($simple->{object_value});
      TestCase::Refcnt->func($simple->{object_value});
      
      my $minimal = $simple->{object_value};
      
      unless (refcnt $minimal == 2) {
        return 0;
      }
    }

    # If condition
    {
      my $simple = new TestCase::Simple;
      
      $simple->{object_value} = new TestCase::Minimal;
      
      if ($simple->{object_value}) {
        my $minimal = $simple->{object_value};
        unless (refcnt $minimal == 2) {
          return 0;
        }
      }
    }
    
    return 1;
  }
  
  static method func :void ($object : TestCase::Minimal) {
    return;
  }
}