@Test
public void updateWithDoubleValueOnly() {
DoublesUnion union = DoublesUnion.builder().build();
union.update(123.456);
DoublesSketch qs = union.getResultAndReset();
assertEquals(qs.getN(), 1);
}
@Test // (expectedExceptions = SketchesStateException.class)
public void checkResultAndReset() {
DoublesSketch qs1 = buildQS(256, 0);
DoublesUnion union = DoublesUnion.builder().build(qs1);
DoublesSketch qs2 = union.getResultAndReset();
assertEquals(qs2.getK(), 256);
}
@Test
public void checkUnionNulls() {
DoublesUnion union = new HeapDoublesUnion(128);
DoublesSketch sk1 = union.getResultAndReset();
DoublesSketch sk2 = union.getResultAndReset();
assertNull(sk1);
assertNull(sk2);
union.update(sk2);
DoublesSketch sk3 = union.getResultAndReset();
assertNull(sk3);
}
@Test
public void checkUpdateMemory() {
DoublesSketch qs1 = buildQS(256, 1000);
int bytes = qs1.getStorageBytes();
Memory dstMem = new NativeMemory(new byte[bytes]);
qs1.putMemory(dstMem);
Memory srcMem = dstMem;
DoublesUnion union = DoublesUnion.builder().build(); // virgin
union.update(srcMem);
for (int i = 1000; i < 2000; i++) union.update(i);
DoublesSketch qs2 = union.getResult();
assertEquals(qs2.getMaxValue(), 1999, 0.0);
String s = union.toString();
println(s); // enable printing to see
union.reset(); // sets to null
}
@Test
public void checkUnion2() {
DoublesSketch qs1 = buildQS(256, 1000);
DoublesSketch qs2 = buildQS(128, 1000);
DoublesUnion union = DoublesUnion.builder().build(); // virgin
union.update(qs1);
DoublesSketch res1 = union.getResult();
// println(res1.toString());
assertEquals(res1.getN(), 1000);
assertEquals(res1.getK(), 256);
union.update(qs2);
DoublesSketch res2 = union.getResult();
assertEquals(res2.getN(), 2000);
assertEquals(res2.getK(), 128);
// println(union.toString());
}
@Test
public void checkUnion1() {
DoublesSketch result;
DoublesSketch qs1 = null;
DoublesUnion union = DoublesUnion.builder().build(); // virgin
qs1 = buildQS(256, 1000); // first 1000
union.update(qs1); // copy me = null, that = valid, OK
// check copy me = null, that = valid
result = union.getResult();
assertEquals(result.getN(), 1000);
assertEquals(result.getK(), 256);
// check merge me = valid, that = valid, both K's the same
DoublesSketch qs2 = buildQS(256, 1000, 1000); // add 1000
union.update(qs2);
result = union.getResult();
assertEquals(result.getN(), 2000);
assertEquals(result.getK(), 256);
}