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class TestArrowTableReader < Test::Unit::TestCase
  def setup
    @count_field = Arrow::Field.new("count", :uint8)
    @visible_field = Arrow::Field.new("visible", :boolean)
    schema = Arrow::Schema.new([@count_field, @visible_field])
    count_arrays = [
      Arrow::UInt8Array.new([1, 2]),
      Arrow::UInt8Array.new([4, 8, 16]),
      Arrow::UInt8Array.new([32, 64]),
      Arrow::UInt8Array.new([128]),
    ]
    visible_arrays = [
      Arrow::BooleanArray.new([true, false, nil]),
      Arrow::BooleanArray.new([true]),
      Arrow::BooleanArray.new([true, false]),
      Arrow::BooleanArray.new([nil]),
      Arrow::BooleanArray.new([nil]),
    ]
    @count_array = Arrow::ChunkedArray.new(count_arrays)
    @visible_array = Arrow::ChunkedArray.new(visible_arrays)
    @count_column = Arrow::Column.new(@count_field, @count_array)
    @visible_column = Arrow::Column.new(@visible_field, @visible_array)
    @table = Arrow::Table.new(schema, [@count_column, @visible_column])
  end

  def test_save_load_path
    tempfile = Tempfile.open(["red-parquet", ".parquet"])
    @table.save(tempfile.path)
    assert_equal(@table, Arrow::Table.load(tempfile.path))
  end

  def test_save_load_buffer
    buffer = Arrow::ResizableBuffer.new(1024)
    @table.save(buffer, format: :parquet)
    assert_equal(@table, Arrow::Table.load(buffer, format: :parquet))
  end
end