c_glib/test/test-mutable-buffer.rb

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class TestMutableBuffer < Test::Unit::TestCase
  def setup
    @data = "Hello"
    @buffer = Arrow::MutableBuffer.new(@data)
  end

  def test_new_bytes
    bytes_data = GLib::Bytes.new(@data)
    buffer = Arrow::MutableBuffer.new(bytes_data)
    if GLib.check_binding_version?(3, 2, 2)
      assert_equal(bytes_data.pointer, buffer.mutable_data.pointer)
    else
      assert_equal(@data, buffer.mutable_data.to_s)
    end
  end

  def test_mutable?
    assert do
      @buffer.mutable?
    end
  end

  def test_mutable_data
    assert_equal(@data, @buffer.mutable_data.to_s)
  end

  def test_slice
    sliced_buffer = @buffer.slice(1, 3)
    assert_equal(@data[1, 3], sliced_buffer.data.to_s)
  end
end