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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
// Unit tests for sourceselector.
#include <vespa/searchlib/attribute/fixedsourceselector.h>
#include <vespa/searchlib/index/dummyfileheadercontext.h>
#include <vespa/searchcommon/common/undefinedvalues.h>
#include <vespa/vespalib/gtest/gtest.h>
#include <vespa/vespalib/util/size_literals.h>
#include <filesystem>
using std::unique_ptr;
using std::string;
using namespace search;
using namespace search::queryeval;
using search::common::FileHeaderContext;
using search::index::DummyFileHeaderContext;
namespace {
template <typename T, size_t N> size_t arraysize(const T (&)[N]) { return N; }
const uint32_t maxDocId = 4_Ki;
struct DocSource { uint32_t docId; uint8_t source; };
const DocSource docs[] = { {0,1}, {1, 0}, {2, 2}, {4, 3}, {8, 9}, {16, 178},
{32, 1}, {64, 2}, {128, 3}, {256,4}, {512, 2},
{1024, 1}, {2048,5}, {maxDocId,1} };
const string index_dir = "test_data";
const string base_file_name = "test_data/sourcelist";
const string base_file_name2 = "test_data/sourcelist2";
const uint32_t default_source = 7;
const uint32_t invalid_source = (uint8_t)search::attribute::getUndefined<int8_t>();
const uint32_t base_id = 42;
uint8_t capSource(uint8_t source, uint8_t defaultSource, bool cap) {
return (cap ? std::min(source, defaultSource) : source);
}
class SourceSelectorTest : public ::testing::Test
{
protected:
SourceSelectorTest();
~SourceSelectorTest() override;
void testSourceSelector(const DocSource *docSource, size_t sz, uint8_t defaultSource, ISourceSelector & selector, bool cap);
void requireThatSelectorCanSaveAndLoad(bool compactLidSpace);
};
SourceSelectorTest::SourceSelectorTest() = default;
SourceSelectorTest::~SourceSelectorTest() = default;
void setSources(ISourceSelector &selector) {
for (size_t i = 0; i < arraysize(docs); ++i) {
selector.setSource(docs[i].docId, docs[i].source);
}
}
TEST_F(SourceSelectorTest, test_fixed)
{
const DocSource *docSource = docs;
size_t sz = arraysize(docs);
FixedSourceSelector selector(default_source, base_file_name, 10);
EXPECT_EQ(default_source, selector.getDefaultSource());
EXPECT_EQ(10u, selector.getDocIdLimit());
setSources(selector);
/*
* One extra element beyond highest explicitly set element is
* initialized to accommodate a match loop optimization. See
* setSource() and reserve() member functions in
* FixedSourceSelector for details.
*/
EXPECT_EQ(default_source, selector.createIterator()->getSource(maxDocId + 1));
testSourceSelector(docSource, sz, selector.getDefaultSource(), selector, false);
EXPECT_EQ(maxDocId+1, selector.getDocIdLimit());
}
void
SourceSelectorTest::testSourceSelector(const DocSource *docSource, size_t sz,
uint8_t defaultSource, ISourceSelector &selector, bool cap)
{
{
auto it(selector.createIterator());
for (size_t i = 0; i < sz; ++i) {
EXPECT_EQ((uint32_t)capSource(docSource[i].source, defaultSource, cap), (uint32_t)it->getSource(docSource[i].docId));
}
}
{
auto it(selector.createIterator());
for (size_t i = 0, j = 0; i <= docSource[sz - 1].docId; ++i) {
if (i != docSource[j].docId) {
EXPECT_EQ((uint32_t)defaultSource, (uint32_t)it->getSource(i));
} else {
EXPECT_EQ((uint32_t)capSource(docSource[j].source, defaultSource, cap), (uint32_t)it->getSource(i));
++j;
}
}
}
}
TEST_F(SourceSelectorTest, require_that_selector_can_clone_and_subtract)
{
FixedSourceSelector selector(default_source, base_file_name);
setSources(selector);
selector.setBaseId(base_id);
const uint32_t diff = 3;
auto new_selector(selector.cloneAndSubtract(base_file_name2, diff));
EXPECT_EQ(default_source - diff, new_selector->getDefaultSource());
EXPECT_EQ(base_id + diff, new_selector->getBaseId());
EXPECT_EQ(maxDocId+1, new_selector->getDocIdLimit());
auto it(new_selector->createIterator());
for(size_t i = 0; i < arraysize(docs); ++i) {
if (docs[i].source > diff) {
EXPECT_EQ(docs[i].source - diff, it->getSource(docs[i].docId));
} else {
EXPECT_EQ(0, it->getSource(docs[i].docId));
}
}
}
void
SourceSelectorTest::requireThatSelectorCanSaveAndLoad(bool compactLidSpace)
{
SCOPED_TRACE(compactLidSpace ? "compactLidSpace=true" : "compactLidSpace=false");
FixedSourceSelector selector(default_source, base_file_name2);
setSources(selector);
selector.setBaseId(base_id);
selector.setSource(maxDocId + 1, default_source);
if (compactLidSpace) {
selector.compactLidSpace(maxDocId - 4);
}
std::filesystem::remove_all(std::filesystem::path(index_dir));
std::filesystem::create_directory(std::filesystem::path(index_dir));
SourceSelector::SaveInfo::UP save_info =
selector.extractSaveInfo(base_file_name);
save_info->save(TuneFileAttributes(), DummyFileHeaderContext());
auto selector2(FixedSourceSelector::load(base_file_name, default_source + base_id));
testSourceSelector(docs, arraysize(docs) - compactLidSpace, default_source, *selector2, true);
EXPECT_EQ(base_id, selector2->getBaseId());
if (compactLidSpace) {
EXPECT_EQ(maxDocId - 4, selector2->getDocIdLimit());
} else {
EXPECT_EQ(maxDocId + 2, selector2->getDocIdLimit());
}
std::filesystem::remove_all(std::filesystem::path(index_dir));
}
TEST_F(SourceSelectorTest, require_that_selector_can_save_and_Load)
{
requireThatSelectorCanSaveAndLoad(false);
requireThatSelectorCanSaveAndLoad(true);
}
TEST_F(SourceSelectorTest, require_that_complete_source_range_is_handled)
{
FixedSourceSelector selector(default_source, base_file_name);
for (uint32_t i = 0; i < ISourceSelector::SOURCE_LIMIT; ++i) {
selector.setSource(i, i);
}
auto itr = selector.createIterator();
for (uint32_t i = 0; i < ISourceSelector::SOURCE_LIMIT; ++i) {
EXPECT_EQ((queryeval::Source)i, itr->getSource(i));
}
}
TEST_F(SourceSelectorTest, require_that_sources_are_counted_correctly)
{
FixedSourceSelector selector(default_source, base_file_name);
for (uint32_t i = 0; i < 256; ++i) {
selector.setSource(i, i%16);
}
SourceSelector::Histogram hist = selector.getDistribution();
for (uint32_t i = 0; i < 16; ++i) {
EXPECT_EQ(16u, hist[i]);
}
for (uint32_t i = 16; i < 256; ++i) {
EXPECT_EQ(0u, hist[i]);
}
}
TEST_F(SourceSelectorTest, require_that_doc_id_limit_is_correct)
{
FixedSourceSelector selector(default_source, base_file_name);
EXPECT_EQ(0u, selector.getDocIdLimit());
selector.setSource(8, 10);
EXPECT_EQ(9u, selector.getDocIdLimit());
selector.compactLidSpace(4);
EXPECT_EQ(4u, selector.getDocIdLimit());
selector.setSource(6, 10);
EXPECT_EQ(7u, selector.getDocIdLimit());
auto selector2 = selector.cloneAndSubtract(base_file_name2, 3);
EXPECT_EQ(7u, selector2->getDocIdLimit());
}
TEST_F(SourceSelectorTest, require_that_correct_default_value_is_used_after_compaction)
{
FixedSourceSelector selector(default_source, base_file_name);
EXPECT_EQ(0u, selector.getDocIdLimit());
auto it(selector.createIterator());
selector.setSource(8, 4);
EXPECT_EQ(default_source, (uint32_t) it->getSource(9));
EXPECT_EQ(default_source, (uint32_t) it->getSource(6));
selector.compactLidSpace(4);
EXPECT_EQ(4u, selector.getDocIdLimit());
EXPECT_EQ(default_source, (uint32_t) it->getSource(4));
EXPECT_EQ(invalid_source, (uint32_t) it->getSource(5)); // beyond guard
selector.setSource(6, 4);
EXPECT_EQ(7u, selector.getDocIdLimit());
EXPECT_EQ(default_source, (uint32_t) it->getSource(5));
EXPECT_EQ(4u, (uint8_t) it->getSource(6));
EXPECT_EQ(default_source, (uint32_t) it->getSource(7));
}
} // namespace
int
main(int argc, char* argv[])
{
::testing::InitGoogleTest(&argc, argv);
if (argc > 0) {
DummyFileHeaderContext::setCreator(argv[0]);
}
return RUN_ALL_TESTS();
}
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