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// Copyright 2016 Yahoo Inc. 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> {
typedef typename std::map<K, V>::const_iterator const_iterator;
typedef std::map<K, V> M;
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);
}
};
class Test : public TestApp
{
public:
int Main() override;
private:
typedef LruParam<uint32_t, string> P;
typedef Map<uint32_t, string> B;
void testCache();
void testCacheSize();
void testCacheSizeDeep();
void testCacheEntriesHonoured();
void testCacheMaxSizeHonoured();
void testThatMultipleRemoveOnOverflowIsFine();
};
int
Test::Main()
{
TEST_INIT("cache_test");
testCache();
testCacheSize();
testCacheSizeDeep();
testCacheEntriesHonoured();
testCacheMaxSizeHonoured();
testThatMultipleRemoveOnOverflowIsFine();
TEST_DONE();
}
void 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);
}
void Test::testCacheSize()
{
B m;
cache< CacheParam<P, B> > cache(m, -1);
cache.write(1, "10 bytes string");
EXPECT_EQUAL(80u, cache.sizeBytes());
}
void 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());
}
void 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());
}
void 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());
}
void 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());
}
TEST_APPHOOK(Test)
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