### Question:
UnitVectorProperty extends SimpleObjectProperty<Vector2dfx> { public double getX() { if (isBound()) { return super.get().getX(); } return internalXProperty().get(); } UnitVectorProperty(Object bean, String name, GeomFactory2dfx factory); GeomFactory2dfx getGeomFactory(); @Override Vector2dfx get(); @Override void set(Vector2dfx newValue); void set(double x, double y); double getX(); double getY(); @Pure ReadOnlyDoubleProperty xProperty(); @Pure ReadOnlyDoubleProperty yProperty();  }### Answer:
@Test public void getX() { assertEpsilonEquals(ux, this.property.getX()); }