@Test
public void testDenseVectorTupleInput(){

    Vector vec = DenseVector.rand(10);
    EuclideanDistance distance = new EuclideanDistance();
    FastDistanceVectorData vectorData = distance.prepareVectorData(Tuple2.of(vec, Row.of(0, "a")));
    assertVectorInput(vectorData, vec, Row.of(0, "a"));
}