ruby/red-arrow/test/test-sort-indices.rb

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class SortIndicesTest < Test::Unit::TestCase
  def setup
    @table = Arrow::Table.new(number1: [16, -1,   2, 32, -4, -4, -8],
                              number2: [32,  2, -16,  8,  1,  4,  1])
  end

  sub_test_case("Table") do
    test("Symbol") do
      assert_equal(Arrow::UInt64Array.new([6, 4, 5, 1, 2, 0, 3]),
                   @table.sort_indices(:number1))
    end

    test("-String") do
      assert_equal(Arrow::UInt64Array.new([3, 0, 2, 1, 4, 5, 6]),
                   @table.sort_indices("-number1"))
    end

    test("Symbol, -String") do
      assert_equal(Arrow::UInt64Array.new([6, 5, 4, 1, 2, 0, 3]),
                   @table.sort_indices([:number1, "-number2"]))
    end
  end
end