@Test
public void errorsWhenEvaluatingCoordinates() {

    this.thrown.expect(UnsupportedOperationException.class);
    final Vect<Double> first = new FixedVector<>(new Scalars<>(2));
    new RotateVect<>(
        first, Math.random()
    ).coords()[0].value(new SpyField<>(new Double(0.), new Double(1.)));
}