ruby/red-arrow-format/test/test-dense-bitmap-builder.rb

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class TestDenseBitmapBuilder < Test::Unit::TestCase
  def setup
    @builder = ArrowFormat::DenseBitmapBuilder.new
  end

  def test_empty
    assert_equal(IO::Buffer.for(""), @builder.finish)
  end

  def test_1byte
    8.times do |i|
      @builder.append(i.odd?)
    end
    buffer = [0b10101010].pack("C") + "\x00" * 63
    assert_equal(IO::Buffer.for(buffer),
                 @builder.finish)
  end

  def test_9bits
    8.times do |i|
      @builder.append(i.odd?)
    end
    @builder.append(true)
    buffer = [0b10101010].pack("C") + [0b00000001].pack("C") + "\x00" * 62
    assert_equal(IO::Buffer.for(buffer),
                 @builder.finish)
  end
end