ruby/red-arrow/test/test-list-array-builder.rb

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class ListArrayBuilderTest < Test::Unit::TestCase
  def setup
    @data_type = Arrow::ListDataType.new(name: "visible", type: :boolean)
    @builder = Arrow::ListArrayBuilder.new(@data_type)
  end

  sub_test_case("#append_value") do
    test("nil") do
      @builder.append_value(nil)
      array = @builder.finish
      assert_equal(nil, array[0])
    end

    test("Array") do
      @builder.append_value([true, false, true])
      array = @builder.finish
      assert_equal([true, false, true], array[0].to_a)
    end
  end

  sub_test_case("#append_values") do
    test("[nil, Array]") do
      @builder.append_values([[false], nil, [true, false, true]])
      array = @builder.finish
      assert_equal([
                     [false],
                     nil,
                     [true, false, true],
                   ],
                   array.collect {|list| list ? list.to_a : nil})
    end

    test("is_valids") do
      @builder.append_values([[false], [true, true], [true, false, true]],
                             [true, false, true])
      array = @builder.finish
      assert_equal([
                     [false],
                     nil,
                     [true, false, true],
                   ],
                   array.collect {|list| list ? list.to_a : nil})
    end
  end

  sub_test_case("#append") do
    test("backward compatibility") do
      @builder.append
      @builder.value_builder.append(true)
      @builder.value_builder.append(false)
      @builder.append
      @builder.value_builder.append(true)
      array = @builder.finish

      assert_equal([
                     [true, false],
                     [true],
                   ],
                   array.collect(&:to_a))
    end
  end
end