c_glib/test/test-count-values.rb

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class TestCountValues < Test::Unit::TestCase
  include Helper::Buildable
  include Helper::Omittable

  def test_int32
    array = build_int32_array([1, 3, 1, -1, -3, -1])
    fields = [
      Arrow::Field.new("values", Arrow::Int32DataType.new),
      Arrow::Field.new("counts", Arrow::Int64DataType.new),
    ]
    structs = [
      {"values" =>  1, "counts" => 2},
      {"values" =>  3, "counts" => 1},
      {"values" => -1, "counts" => 2},
      {"values" => -3, "counts" => 1},
    ]
    assert_equal(build_struct_array(fields, structs),
                 array.count_values)
  end

  def test_string
    array = build_string_array(["Ruby", "Python", "Ruby"])
    fields = [
      Arrow::Field.new("values", Arrow::StringDataType.new),
      Arrow::Field.new("counts", Arrow::Int64DataType.new),
    ]
    structs = [
      {"values" => "Ruby",   "counts" => 2},
      {"values" => "Python", "counts" => 1},
    ]
    assert_equal(build_struct_array(fields, structs),
                 array.count_values)
  end
end