@Test
public void testInducedPermutation() {
List<String> origData = Arrays.asList(new String[] {"a", "b", "c", "d", "d"});
List<String> permutedData = Arrays.asList(new String[] {"d", "b", "c", "a", "d"});
DummyRandomKey drk = new DummyRandomKey(RandomKey.inducedPermutation(origData, permutedData));
List<String> decoded = drk.decode(origData);
Assert.assertEquals("d", decoded.get(0));
Assert.assertEquals("b", decoded.get(1));
Assert.assertEquals("c", decoded.get(2));
Assert.assertEquals("a", decoded.get(3));
Assert.assertEquals("d", decoded.get(4));
try {
RandomKey.inducedPermutation(
Arrays.asList(new String[] {"a", "b", "c", "d", "d"}),
Arrays.asList(new String[] {"a", "b", "c", "d"}));
Assert.fail("Uncaught exception");
} catch (MathIllegalArgumentException e) {
// no-op
}
try {
RandomKey.inducedPermutation(
Arrays.asList(new String[] {"a", "b", "c", "d", "d"}),
Arrays.asList(new String[] {"a", "b", "c", "d", "f"}));
Assert.fail("Uncaught exception");
} catch (MathIllegalArgumentException e) {
// no-op
}
}
@Test
public void testEqualRepr() {
DummyRandomKey drk = new DummyRandomKey(new Double[] {0.2, 0.2, 0.5});
List<String> decodedData = drk.decode(Arrays.asList(new String[] {"a", "b", "c"}));
Assert.assertEquals("a", decodedData.get(0));
Assert.assertEquals("b", decodedData.get(1));
Assert.assertEquals("c", decodedData.get(2));
}
@Test
public void testIdentityPermutation() {
DummyRandomKey drk = new DummyRandomKey(RandomKey.identityPermutation(5));
List<String> decoded = drk.decode(Arrays.asList(new String[] {"a", "b", "c", "d", "e"}));
Assert.assertEquals("a", decoded.get(0));
Assert.assertEquals("b", decoded.get(1));
Assert.assertEquals("c", decoded.get(2));
Assert.assertEquals("d", decoded.get(3));
Assert.assertEquals("e", decoded.get(4));
}
@Test
public void testDecode() {
DummyRandomKey drk = new DummyRandomKey(new Double[] {0.4, 0.1, 0.5, 0.8, 0.2});
List<String> decoded = drk.decode(Arrays.asList(new String[] {"a", "b", "c", "d", "e"}));
Assert.assertEquals("b", decoded.get(0));
Assert.assertEquals("e", decoded.get(1));
Assert.assertEquals("a", decoded.get(2));
Assert.assertEquals("c", decoded.get(3));
Assert.assertEquals("d", decoded.get(4));
}
@Test
public void testIsSame() {
DummyRandomKey drk1 = new DummyRandomKey(new Double[] {0.4, 0.1, 0.5, 0.8, 0.2});
DummyRandomKey drk2 = new DummyRandomKey(new Double[] {0.4, 0.1, 0.5, 0.8, 0.2});
DummyRandomKey drk3 = new DummyRandomKey(new Double[] {0.4, 0.15, 0.5, 0.8, 0.2});
DummyRandomKey drk4 = new DummyRandomKey(new Double[] {0.4, 0.25, 0.5, 0.8, 0.2});
DummyRandomKey drk5 = new DummyRandomKey(new Double[] {0.4, 0.25, 0.5, 0.8, 0.2, 0.5});
Assert.assertTrue(drk1.isSame(drk2));
Assert.assertTrue(drk2.isSame(drk3));
Assert.assertFalse(drk3.isSame(drk4));
Assert.assertFalse(drk4.isSame(drk5));
}