c_glib/test/test-int8-array.rb

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class TestInt8Array < Test::Unit::TestCase
  include Helper::Buildable

  def test_new
    assert_equal(build_int8_array([-1, 2, nil]),
                 Arrow::Int8Array.new(3,
                                      Arrow::Buffer.new([-1, 2].pack("c*")),
                                      Arrow::Buffer.new([0b011].pack("C*")),
                                      -1))
  end

  def test_buffer
    builder = Arrow::Int8ArrayBuilder.new
    builder.append_value(-1)
    builder.append_value(2)
    builder.append_value(-4)
    array = builder.finish
    assert_equal([-1, 2, -4].pack("c*"), array.buffer.data.to_s)
  end

  def test_value
    builder = Arrow::Int8ArrayBuilder.new
    builder.append_value(-1)
    array = builder.finish
    assert_equal(-1, array.get_value(0))
  end

  def test_values
    builder = Arrow::Int8ArrayBuilder.new
    builder.append_value(-1)
    builder.append_value(2)
    builder.append_value(-4)
    array = builder.finish
    assert_equal([-1, 2, -4], array.values)
  end

  sub_test_case("#sum") do
    def test_with_null
      array = build_int8_array([2, -4, nil])
      assert_equal(-2, array.sum)
    end

    def test_empty
      array = build_int8_array([])
      assert_equal(0, array.sum)
    end
  end
end