ruby/red-arrow/test/test-dense-union-array.rb

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class DenseUnionArrayTest < Test::Unit::TestCase
  def setup
    data_type_fields = [
      Arrow::Field.new("number", :int16),
      Arrow::Field.new("text", :string),
    ]
    type_codes = [11, 13]
    @data_type = Arrow::DenseUnionDataType.new(data_type_fields, type_codes)
    type_ids = Arrow::Int8Array.new([11, 13, 11, 13, 13])
    value_offsets = Arrow::Int32Array.new([0, 0, 1, 1, 2])
    fields = [
      Arrow::Int16Array.new([1, nil]),
      Arrow::StringArray.new(["a", "b", "c"])
    ]
    @array = Arrow::DenseUnionArray.new(@data_type,
                                        type_ids,
                                        value_offsets,
                                        fields)
  end

  def test_get_value
    assert_equal([1, "a", nil, "b", "c"],
                 @array.length.times.collect {|i| @array[i]})
  end
end