@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 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);
}