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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.search.predicate.index;
import org.junit.jupiter.api.Test;
import java.io.IOException;
import static com.yahoo.search.predicate.serialization.SerializationTestHelper.assertSerializationDeserializationMatches;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
/**
* @author <a href="mailto:magnarn@yahoo-inc.com">Magnar Nedland</a>
* @author bjorncs
*/
public class SimpleIndexTest {
private static final long KEY = 0x12345L;
private static final int DOC_ID = 42;
@Test
void requireThatValuesCanBeInserted() {
SimpleIndex.Builder builder = new SimpleIndex.Builder();
builder.insert(KEY, new Posting(DOC_ID, 10));
SimpleIndex index = builder.build();
SimpleIndex.Entry e = index.getPostingList(KEY);
assertNotNull(e);
assertEquals(1, e.docIds.length);
builder = new SimpleIndex.Builder();
builder.insert(KEY, new Posting(DOC_ID, 10));
builder.insert(KEY, new Posting(DOC_ID + 1, 20));
index = builder.build();
e = index.getPostingList(KEY);
assertEquals(2, e.docIds.length);
assertEquals(10, e.dataRefs[0]);
assertEquals(20, e.dataRefs[1]);
}
@Test
void requireThatEntriesAreSortedOnId() {
SimpleIndex.Builder builder = new SimpleIndex.Builder();
builder.insert(KEY, new Posting(DOC_ID, 10));
builder.insert(KEY, new Posting(DOC_ID - 1, 20)); // Out of order
builder.insert(KEY, new Posting(DOC_ID + 1, 30));
SimpleIndex index = builder.build();
SimpleIndex.Entry entry = index.getPostingList(KEY);
assertEquals(3, entry.docIds.length);
assertEquals(DOC_ID - 1, entry.docIds[0]);
assertEquals(DOC_ID, entry.docIds[1]);
assertEquals(DOC_ID + 1, entry.docIds[2]);
}
@Test
void requireThatSerializationAndDeserializationRetainDictionary() throws IOException {
SimpleIndex.Builder builder = new SimpleIndex.Builder();
builder.insert(KEY, new Posting(DOC_ID, 10));
builder.insert(KEY, new Posting(DOC_ID + 1, 20));
builder.insert(KEY, new Posting(DOC_ID + 2, 30));
builder.insert(KEY + 0xFFFFFF, new Posting(DOC_ID, 100));
builder.insert(KEY + 0xFFFFFF, new Posting(DOC_ID + 1, 200));
SimpleIndex index = builder.build();
assertSerializationDeserializationMatches(index, SimpleIndex::writeToOutputStream, SimpleIndex::fromInputStream);
}
}
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