@Test(expected = IllegalArgumentException.class)
public void testVectorDistance() {
DistanceMeasure distanceMeasure = new CosineDistanceMeasure();
Vector v1 = new Vector();
Vector v2 = new Vector();
v1.add(Real.valueOf(4.0));
v1.add(Real.valueOf(3.0));
v1.add(Real.valueOf(2.0));
v2.add(Real.valueOf(2.0));
v2.add(Real.valueOf(3.0));
v2.add(Real.valueOf(4.0));
double distance = distanceMeasure.distance(v1, v2);
assertTrue(distance >= -1 && distance <= 1);
assertEquals(1 - (25.0 / 29.0), distance, 0.000000000000001);
v1.add(Real.valueOf(22.0));
distanceMeasure.distance(v1, v2);
}
