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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/searchlib/memoryindex/word_store.h>
#include <vespa/vespalib/gtest/gtest.h>
#include <vespa/vespalib/util/exceptions.h>
#include <vespa/vespalib/util/size_literals.h>
#include <vespa/log/log.h>
LOG_SETUP("word_store_test");
using namespace vespalib::datastore;
namespace search::memoryindex {
TEST(WordStoreTest, words_can_be_added_and_retrieved)
{
std::string w1 = "require";
std::string w2 = "that";
std::string w3 = "words";
WordStore ws;
static constexpr auto buffer_array_size = WordStore::buffer_array_size;
using Aligner = WordStore::Aligner;
EntryRef r1 = ws.addWord(w1);
EntryRef r2 = ws.addWord(w2);
EntryRef r3 = ws.addWord(w3);
uint32_t invp = WordStore::buffer_array_size; // Reserved as invalid
uint32_t w1s = w1.size() + 1;
uint32_t w1p = Aligner::pad(w1s);
uint32_t w2s = w2.size() + 1;
uint32_t w2p = Aligner::pad(w2s);
EXPECT_EQ(invp, WordStore::RefType(r1).offset() * buffer_array_size);
EXPECT_EQ(invp + w1s + w1p, WordStore::RefType(r2).offset() * buffer_array_size);
EXPECT_EQ(invp + w1s + w1p + w2s + w2p, WordStore::RefType(r3).offset() * buffer_array_size);
EXPECT_EQ(0u, WordStore::RefType(r1).bufferId());
EXPECT_EQ(0u, WordStore::RefType(r2).bufferId());
EXPECT_EQ(0u, WordStore::RefType(r3).bufferId());
EXPECT_EQ(std::string("require"), ws.getWord(r1));
EXPECT_EQ(std::string("that"), ws.getWord(r2));
EXPECT_EQ(std::string("words"), ws.getWord(r3));
}
TEST(WordStoreTest, add_word_triggers_change_of_buffer)
{
WordStore ws;
size_t word = 0;
uint32_t lastId = 0;
char wordStr[10];
for (;;++word) {
snprintf(wordStr, sizeof(wordStr), "%6zu", word);
// all words uses 12 bytes (include padding)
EntryRef r = ws.addWord(std::string(wordStr));
EXPECT_EQ(std::string(wordStr), ws.getWord(r));
uint32_t bufferId = WordStore::RefType(r).bufferId();
if (bufferId > lastId) {
LOG(info,
"Changed to bufferId %u after %zu words",
bufferId, word);
lastId = bufferId;
}
if (bufferId == 4) {
lastId = bufferId;
break;
}
}
LOG(info, "Added %zu words in 4 buffers", word);
EXPECT_EQ(2047u, word);
EXPECT_EQ(4u, lastId);
}
TEST(WordStoreTest, long_word_triggers_exception)
{
WordStore ws;
vespalib::string word(16_Mi + 1_Ki, 'z');
EXPECT_THROW(ws.addWord(word), vespalib::OverflowException);
}
}
GTEST_MAIN_RUN_ALL_TESTS()
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