ruby/red-arrow-format/test/test-null-array.rb

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class TestNullArray < Test::Unit::TestCase
  def setup
    @array = ArrowFormat::NullArray.new(3)
  end

  def test_initialize
    assert_equal([nil] * 9,
                 ArrowFormat::NullArray.new(9).to_a)
  end

  sub_test_case("#==") do
    def test_no_slice
      array1 = ArrowFormat::NullArray.new(3)
      array2 = ArrowFormat::NullArray.new(3)
      assert_equal(array1, array2)
    end

    def test_sliced
      array1 = ArrowFormat::NullArray.new(3)
      array2 = ArrowFormat::NullArray.new(5)
      assert_equal(array1, array2.slice(1, 3))
    end
  end

  def test_aref
    assert_nil(@array[1])
  end
end