ruby/red-arrow-format/test/test-int8-array.rb

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class TestInt8Array < Test::Unit::TestCase
  def setup
    @values = [-(2 ** 7), nil, (2 ** 7) - 1]
    @array = ArrowFormat::Int8Array.new(@values)
  end

  sub_test_case("#initialize") do
    def test_no_null
      values = [-(2 ** 7), (2 ** 7) - 1]
      assert_equal(values,
                   ArrowFormat::Int8Array.new(values).to_a)
    end

    def test_mixed
      values = [-(2 ** 7), nil, (2 ** 7) - 1]
      assert_equal(values,
                   ArrowFormat::Int8Array.new(values).to_a)
    end
  end

  sub_test_case("#==") do
    def test_no_slice
      values = [-(2 ** 7), nil, (2 ** 7) - 1]
      array1 = ArrowFormat::Int8Array.new(values)
      array2 = ArrowFormat::Int8Array.new(values)
      assert_equal(array1, array2)
    end

    def test_sliced
      values = [-(2 ** 7), nil, (2 ** 7) - 1]
      array1 = ArrowFormat::Int8Array.new(values)
      array2 = ArrowFormat::Int8Array.new([0, *values, 0])
      assert_equal(array1, array2.slice(1, 3))
    end

    def test_sliced_different_content
      values = [-(2 ** 7), nil, (2 ** 7) - 1]
      array1 = ArrowFormat::Int8Array.new(values)
      array2 = ArrowFormat::Int8Array.new([0, 0, *values, 0])
      assert_not_equal(array1, array2.slice(1, 3))
    end
  end

  sub_test_case("#[]") do
    def test_valid
      assert_equal(@values[2], @array[2])
    end

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