c_glib/test/test-run-end-encoded-array.rb

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#
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class TestRunEndEncodedArray < Test::Unit::TestCase
  include Helper::Buildable

  def setup
    @run_end_data_type = Arrow::Int32DataType.new
    @value_data_type = Arrow::StringDataType.new
    @data_type = Arrow::RunEndEncodedDataType.new(@run_end_data_type,
                                                  @value_data_type)
  end

  sub_test_case(".new") do
    def test_new
      run_ends = build_int32_array([2, 5, 6])
      values = build_string_array(["hello", "hi", "world"])
      array = Arrow::RunEndEncodedArray.new(@data_type,
                                            6,
                                            run_ends,
                                            values,
                                            0)
      assert_equal(<<-STRING.chomp, array.to_s)

-- run_ends:
  [
    2,
    5,
    6
  ]
-- values:
  [
    "hello",
    "hi",
    "world"
  ]
      STRING
    end
  end

  sub_test_case("instance methods") do
    def setup
      super
      @raw_run_ends = [3, 6, 7]
      @run_ends = build_int32_array(@raw_run_ends)
      @raw_values = ["hello", "hi", "world"]
      @values = build_string_array(@raw_values)
      @offset = 4
      @array = Arrow::RunEndEncodedArray.new(@data_type,
                                             3,
                                             @run_ends,
                                             @values,
                                             @offset)
    end

    def test_run_ends
      assert_equal(@run_ends, @array.run_ends)
    end

    def test_values
      assert_equal(@values, @array.values)
    end

    def test_logical_run_ends
      logical_raw_run_ends =
        @raw_run_ends
          .collect {|v| v - @offset}
          .reject(&:negative?)
      assert_equal(build_int32_array(logical_raw_run_ends),
                   @array.logical_run_ends)
    end

    def test_logical_values
      assert_equal(build_string_array(@raw_values[1..-1]),
                   @array.logical_values)
    end

    def test_find_physical_offset
      assert_equal(1, @array.find_physical_offset)
    end

    def test_find_physical_length
      assert_equal(2, @array.find_physical_length)
    end
  end
end