@Test
public void testMetricBound() {
System.out.println("metricBound");
ChebyshevDistance instance = new ChebyshevDistance();
assertTrue(instance.metricBound() > 0);
assertTrue(Double.isInfinite(instance.metricBound()));
}
@Test
public void testMetricProperties() {
System.out.println("isSymmetric");
ChebyshevDistance instance = new ChebyshevDistance();
assertTrue(instance.isSymmetric());
assertTrue(instance.isSubadditive());
assertTrue(instance.isIndiscemible());
}
@Test
public void testDist_Vec_Vec() {
System.out.println("dist");
ChebyshevDistance dist = new ChebyshevDistance();
List<Double> cache = dist.getAccelerationCache(vecs);
List<Double> cache2 = dist.getAccelerationCache(vecs, ex);
if (cache != null) {
assertEquals(cache.size(), cache2.size());
for (int i = 0; i < cache.size(); i++) assertEquals(cache.get(i), cache2.get(i), 0.0);
assertTrue(dist.supportsAcceleration());
} else {
assertNull(cache2);
assertFalse(dist.supportsAcceleration());
}
try {
dist.dist(half, new DenseVector(half.length() + 1));
fail("Distance between vecs should have erred");
} catch (Exception ex) {
}
for (int i = 0; i < vecs.size(); i++)
for (int j = 0; j < vecs.size(); j++) {
ChebyshevDistance d = dist.clone();
assertEquals(expected[i][j], d.dist(vecs.get(i), vecs.get(j)), 1e-12);
assertEquals(expected[i][j], d.dist(i, j, vecs, cache), 1e-12);
assertEquals(expected[i][j], d.dist(i, vecs.get(j), vecs, cache), 1e-12);
assertEquals(
expected[i][j],
d.dist(i, vecs.get(j), dist.getQueryInfo(vecs.get(j)), vecs, cache),
1e-12);
}
}
