c_glib/test/test-tensor.rb

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#
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#
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class TestTensor < Test::Unit::TestCase
  include Helper::Omittable

  def setup
    @raw_data = [
      1, 2,
      3, 4,

      5, 6,
      7, 8,

      9, 10,
      11, 12,
    ]
    data = Arrow::Buffer.new(@raw_data.pack("c*"))
    @shape = [3, 2, 2]
    strides = []
    names = ["a", "b", "c"]
    @tensor = Arrow::Tensor.new(Arrow::Int8DataType.new,
                                data,
                                @shape,
                                strides,
                                names)
  end

  def test_equal
    data = Arrow::Buffer.new(@raw_data.pack("c*"))
    strides = []
    names = ["a", "b", "c"]
    other_tensor = Arrow::Tensor.new(Arrow::Int8DataType.new,
                                     data,
                                     @shape,
                                     strides,
                                     names)
    assert_equal(@tensor,
                 other_tensor)
  end

  def test_value_data_type
    assert_equal(Arrow::Int8DataType, @tensor.value_data_type.class)
  end

  def test_value_type
    assert_equal(Arrow::Type::INT8, @tensor.value_type)
  end

  def test_buffer
    assert_equal(@raw_data, @tensor.buffer.data.to_s.unpack("c*"))
  end

  def test_shape
    require_gi_bindings(3, 1, 2)
    assert_equal(@shape, @tensor.shape)
  end

  def test_strides
    require_gi_bindings(3, 1, 2)
    assert_equal([4, 2, 1], @tensor.strides)
  end

  def test_n_dimensions
    assert_equal(@shape.size, @tensor.n_dimensions)
  end

  def test_dimension_name
    dimension_names = @tensor.n_dimensions.times.collect do |i|
      @tensor.get_dimension_name(i)
    end
    assert_equal(["a", "b", "c"],
                 dimension_names)
  end

  def test_size
    assert_equal(@raw_data.size, @tensor.size)
  end

  def test_mutable?
    assert do
      not @tensor.mutable?
    end
  end

  def test_contiguous?
    assert do
      @tensor.contiguous?
    end
  end

  def test_row_major?
    assert do
      @tensor.row_major?
    end
  end

  def test_column_major?
    assert do
      not @tensor.column_major?
    end
  end

  def test_io
    buffer = Arrow::PoolBuffer.new
    output = Arrow::BufferOutputStream.new(buffer)
    output.write_tensor(@tensor)
    input = Arrow::BufferInputStream.new(buffer)
    assert_equal(@tensor,
                 input.read_tensor(0))
  end
end