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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/testapp.h>
#include <vespa/vespalib/stllike/string.h>
#include <vespa/vespalib/stllike/cache.hpp>
#include <map>
using namespace vespalib;
template<typename K, typename V>
class Map : public std::map<K, V> {
using const_iterator = typename std::map<K, V>::const_iterator;
using M = std::map<K, V>;
public:
bool read(const K & k, V & v) const {
const_iterator found = M::find(k);
bool ok(found != this->end());
if (ok) {
v = found->second;
}
return ok;
}
void write(const K & k, const V & v) {
(*this)[k] = v;
}
void erase(const K & k) {
M::erase(k);
}
};
using P = LruParam<uint32_t, string>;
using B = Map<uint32_t, string>;
TEST("testCache") {
B m;
cache< CacheParam<P, B> > cache(m, -1);
// Verfify start conditions.
EXPECT_TRUE(cache.size() == 0);
EXPECT_TRUE( ! cache.hasKey(1) );
cache.write(1, "First inserted string");
EXPECT_TRUE( cache.hasKey(1) );
m[2] = "String inserted beneath";
EXPECT_TRUE( ! cache.hasKey(2) );
EXPECT_EQUAL( cache.read(2), "String inserted beneath");
EXPECT_TRUE( cache.hasKey(2) );
cache.erase(1);
EXPECT_TRUE( ! cache.hasKey(1) );
EXPECT_TRUE(cache.size() == 1);
}
TEST("testCacheSize")
{
B m;
cache< CacheParam<P, B> > cache(m, -1);
cache.write(1, "10 bytes string");
EXPECT_EQUAL(80u, cache.sizeBytes());
cache.write(1, "10 bytes string"); // Still the same size
EXPECT_EQUAL(80u, cache.sizeBytes());
}
TEST("testCacheSizeDeep")
{
B m;
cache< CacheParam<P, B, zero<uint32_t>, size<string> > > cache(m, -1);
cache.write(1, "15 bytes string");
EXPECT_EQUAL(95u, cache.sizeBytes());
cache.write(1, "10 bytes s");
EXPECT_EQUAL(90u, cache.sizeBytes());
cache.write(1, "20 bytes string ssss");
EXPECT_EQUAL(100u, cache.sizeBytes());
}
TEST("testCacheEntriesHonoured") {
B m;
cache< CacheParam<P, B, zero<uint32_t>, size<string> > > cache(m, -1);
cache.maxElements(1);
cache.write(1, "15 bytes string");
EXPECT_EQUAL(1u, cache.size());
EXPECT_EQUAL(95u, cache.sizeBytes());
cache.write(2, "16 bytes stringg");
EXPECT_EQUAL(1u, cache.size());
EXPECT_TRUE( cache.hasKey(2) );
EXPECT_FALSE( cache.hasKey(1) );
EXPECT_EQUAL(96u, cache.sizeBytes());
}
TEST("testCacheMaxSizeHonoured") {
B m;
cache< CacheParam<P, B, zero<uint32_t>, size<string> > > cache(m, 200);
cache.write(1, "15 bytes string");
EXPECT_EQUAL(1u, cache.size());
EXPECT_EQUAL(95u, cache.sizeBytes());
cache.write(2, "16 bytes stringg");
EXPECT_EQUAL(2u, cache.size());
EXPECT_EQUAL(191u, cache.sizeBytes());
cache.write(3, "17 bytes stringgg");
EXPECT_EQUAL(3u, cache.size());
EXPECT_EQUAL(288u, cache.sizeBytes());
cache.write(4, "18 bytes stringggg");
EXPECT_EQUAL(3u, cache.size());
EXPECT_EQUAL(291u, cache.sizeBytes());
}
TEST("testThatMultipleRemoveOnOverflowIsFine") {
B m;
cache< CacheParam<P, B, zero<uint32_t>, size<string> > > cache(m, 2000);
for (size_t j(0); j < 5; j++) {
for (size_t i(0); cache.size() == i; i++) {
cache.write(j*53+i, "a");
}
}
EXPECT_EQUAL(25u, cache.size());
EXPECT_EQUAL(2025u, cache.sizeBytes());
EXPECT_FALSE( cache.hasKey(0) );
string ls("long string aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
string vls=ls+ls+ls+ls+ls+ls;
cache.write(53+5, ls);
EXPECT_EQUAL(25u, cache.size());
EXPECT_EQUAL(2498u, cache.sizeBytes());
EXPECT_FALSE( cache.hasKey(1) );
cache.write(53*7+5, ls);
EXPECT_EQUAL(19u, cache.size());
EXPECT_EQUAL(2485u, cache.sizeBytes());
EXPECT_FALSE( cache.hasKey(2) );
cache.write(53*8+5, vls);
EXPECT_EQUAL(14u, cache.size());
EXPECT_EQUAL(4923u, cache.sizeBytes());
cache.write(53*9+6, vls);
EXPECT_EQUAL(1u, cache.size());
EXPECT_EQUAL(2924u, cache.sizeBytes());
}
class ExtendedCache : public cache< CacheParam<P, B> > {
public:
ExtendedCache(BackingStore & b, size_t maxBytes)
: cache<CacheParam<P, B>>(b, maxBytes),
_insert_count(0),
_remove_count(0)
{}
size_t _insert_count;
size_t _remove_count;
private:
void onRemove(const K &) override {
_remove_count++;
}
void onInsert(const K &) override {
_insert_count++;
}
};
TEST("testOnInsertonRemoveCalledWhenFull") {
B m;
ExtendedCache cache(m, 200);
EXPECT_EQUAL(0u, cache._insert_count);
EXPECT_EQUAL(0u, cache._remove_count);
cache.write(1, "15 bytes string");
EXPECT_EQUAL(1u, cache.size());
EXPECT_EQUAL(80u, cache.sizeBytes());
EXPECT_EQUAL(1u, cache._insert_count);
EXPECT_EQUAL(0u, cache._remove_count);
cache.write(2, "16 bytes stringg");
EXPECT_EQUAL(2u, cache.size());
EXPECT_EQUAL(160u, cache.sizeBytes());
EXPECT_EQUAL(2u, cache._insert_count);
EXPECT_EQUAL(0u, cache._remove_count);
cache.write(3, "17 bytes stringgg");
EXPECT_EQUAL(3u, cache.size());
EXPECT_EQUAL(240u, cache.sizeBytes());
EXPECT_EQUAL(3u, cache._insert_count);
EXPECT_EQUAL(0u, cache._remove_count);
EXPECT_TRUE(cache.hasKey(1));
cache.write(4, "18 bytes stringggg");
EXPECT_EQUAL(3u, cache.size());
EXPECT_EQUAL(240u, cache.sizeBytes());
EXPECT_EQUAL(4u, cache._insert_count);
EXPECT_EQUAL(1u, cache._remove_count);
EXPECT_FALSE(cache.hasKey(1));
cache.invalidate(2);
EXPECT_EQUAL(2u, cache.size());
EXPECT_EQUAL(160u, cache.sizeBytes());
EXPECT_EQUAL(4u, cache._insert_count);
EXPECT_EQUAL(2u, cache._remove_count);
EXPECT_FALSE(cache.hasKey(2));
cache.invalidate(3);
EXPECT_EQUAL(1u, cache.size());
EXPECT_EQUAL(80u, cache.sizeBytes());
EXPECT_EQUAL(4u, cache._insert_count);
EXPECT_EQUAL(3u, cache._remove_count);
EXPECT_FALSE(cache.hasKey(3));
}
TEST_MAIN() { TEST_RUN_ALL(); }
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