@Test
void testRowWiseAddition() {

  double[] a = {3, 4, 5};
  double[] b = {3, 4, 5};
  double[] c = {3, 4, 5};
  Table t =
      Table.create(
          "test",
          DoubleColumn.create("a", a),
          DoubleColumn.create("b", b),
          DoubleColumn.create("c", c));
  DoubleColumn n = t.doubleColumn(0).add(t.doubleColumn(1)).add(t.doubleColumn(2));
  assertEquals(9, n.get(0), 0);
  assertEquals(12, n.get(1), 0);
  assertEquals(15, n.get(2), 0);
}