c_glib/test/test-dense-union-array.rb

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

  sub_test_case(".new") do
    sub_test_case("default") do
      def setup
        type_ids = build_int8_array([0, 1, 0, 1, 1])
        value_offsets = build_int32_array([0, 0, 1, 1, 2])
        fields = [
          build_int16_array([1, nil]),
          build_string_array(["a", "b", "c"]),
        ]
        @array = Arrow::DenseUnionArray.new(type_ids, value_offsets, fields)
      end

      def test_value_data_type
        fields = [
          Arrow::Field.new("0", Arrow::Int16DataType.new),
          Arrow::Field.new("1", Arrow::StringDataType.new),
        ]
        assert_equal(Arrow::DenseUnionDataType.new(fields, [0, 1]),
                     @array.value_data_type)
      end

      def test_field
        assert_equal([
                       build_int16_array([1, nil]),
                       build_string_array(["a", "b", "c"]),
                     ],
                     [
                       @array.get_field(0),
                       @array.get_field(1),
                     ])
      end
    end

    sub_test_case("DataType") do
      def setup
        data_type_fields = [
          Arrow::Field.new("number", Arrow::Int16DataType.new),
          Arrow::Field.new("text", Arrow::StringDataType.new),
        ]
        type_codes = [11, 13]
        @data_type = Arrow::DenseUnionDataType.new(data_type_fields, type_codes)
        type_ids = build_int8_array([11, 13, 11, 13, 13])
        value_offsets = build_int32_array([0, 0, 1, 1, 2])
        fields = [
          build_int16_array([1, nil]),
          build_string_array(["a", "b", "c"])
        ]
        @array = Arrow::DenseUnionArray.new(@data_type, type_ids, value_offsets, fields)
      end

      def test_value_data_type
        assert_equal(@data_type,
                     @array.value_data_type)
      end

      def test_field
        assert_equal([
                       build_int16_array([1, nil]),
                       build_string_array(["a", "b", "c"]),
                     ],
                     [
                       @array.get_field(0),
                       @array.get_field(1),
                     ])
      end
    end
  end
end