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class TestFixedSizeListArray < Test::Unit::TestCase
  include Helper::Buildable

  def test_new
    field = Arrow::Field.new("value", Arrow::Int8DataType.new)
    data_type = Arrow::FixedSizeListDataType.new(field, 2)
    data = Arrow::Buffer.new([1, 2, 3, 4].pack("c*"))
    nulls = Arrow::Buffer.new([0b1111].pack("C*"))
    values = Arrow::Int8Array.new(4, data, nulls, 0)
    assert_equal(build_fixed_size_list_array(Arrow::Int8DataType.new, 2,
                                             [[1, 2], [3, 4]]),
                 Arrow::FixedSizeListArray.new(data_type,
                                               2,
                                               values,
                                               Arrow::Buffer.new([0b11].pack("C*")),
                                               -1))
  end

  def test_value
    array = build_fixed_size_list_array(Arrow::Int8DataType.new, 2,
                                        [[1, 2], [3, 4]])
    value = array.get_value(1)
    assert_equal([3, 4],
                 value.length.times.collect {|i| value.get_value(i)})
  end

  def test_value_type
    field = Arrow::Field.new("value", Arrow::Int8DataType.new)
    data_type = Arrow::FixedSizeListDataType.new(field, 2)
    builder = Arrow::FixedSizeListArrayBuilder.new(data_type)
    array = builder.finish
    assert_equal(Arrow::Int8DataType.new, array.value_type)
  end

  def test_values
    array = build_fixed_size_list_array(Arrow::Int8DataType.new, 2,
                                        [[1, 2], [3, 4]])
    values = array.values
    assert_equal([1, 2, 3, 4],
                 values.length.times.collect {|i| values.get_value(i)})
  end

  def test_value_offset
    array = build_fixed_size_list_array(Arrow::Int8DataType.new, 2,
                                        [[1, 2], [3, 4]])
    assert_equal([0, 2],
                 array.length.times.collect {|i| array.get_value_offset(i)})
  end

  def test_value_length
    array = build_fixed_size_list_array(Arrow::Int8DataType.new, 2,
                                        [[1, 2], [3, 4]])
    # All lists have the same fixed size
    assert_equal([2, 2],
                 array.length.times.collect {|i| array.get_value_length(i)})
  end

  def test_list_size
    array = build_fixed_size_list_array(Arrow::Int8DataType.new, 2,
                                        [[1, 2], [3, 4]])
    assert_equal(2, array.list_size)
  end
end
