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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.searchlib.aggregation.hll;
import com.yahoo.vespa.objects.BufferSerializer;
import org.junit.Test;
import java.util.HashSet;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class SparseSketchTest {
@Test
public void requireThatMergeDoesSetUnion() {
SparseSketch s1 = new SparseSketch();
s1.aggregate(42);
s1.aggregate(9001);
SparseSketch s2 = new SparseSketch();
s2.aggregate(1337);
s2.aggregate(9001);
s1.merge(s2);
HashSet<Integer> data = s1.data();
assertEquals(3, s1.size());
assertTrue(data.contains(42));
assertTrue(data.contains(1337));
assertTrue(data.contains(9001));
}
@Test
public void requireThatSerializationRetainAllData() {
SparseSketch from = new SparseSketch();
from.aggregate(42);
from.aggregate(1337);
SparseSketch to = new SparseSketch();
BufferSerializer buffer = new BufferSerializer();
from.serialize(buffer);
buffer.flip();
to.deserialize(buffer);
assertEquals(from, to);
}
@Test
public void requireThatEqualsComparesDataContent() {
SparseSketch s1 = new SparseSketch();
s1.aggregate(1337);
s1.aggregate(42);
SparseSketch s2 = new SparseSketch();
s2.aggregate(42);
s2.aggregate(1337);
assertEquals(s1.data(), s2.data());
}
}
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