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#include "cached.h"
#include <yql/essentials/sql/v1/complete/name/cache/local/cache.h>
#include <library/cpp/testing/unittest/registar.h>
#include <library/cpp/time_provider/monotonic_provider.h>
using namespace NSQLComplete;
class TFailableCache: public ICache<TString, TString> {
public:
NThreading::TFuture<TEntry> Get(const TString& key) const try {
if (IsGetFailing) {
ythrow yexception() << "O_O";
}
return NThreading::MakeFuture<TEntry>({.Value = key, .IsExpired = IsExpired});
} catch (...) {
return NThreading::MakeErrorFuture<TEntry>(std::current_exception());
}
NThreading::TFuture<void> Update(const TString& /* key */, TString /* value */) const try {
if (IsUpdateFailing) {
ythrow yexception() << "O_O";
}
return NThreading::MakeFuture();
} catch (...) {
return NThreading::MakeErrorFuture<void>(std::current_exception());
}
bool IsGetFailing = false;
bool IsExpired = false;
bool IsUpdateFailing = false;
};
Y_UNIT_TEST_SUITE(CachedQueryTests) {
Y_UNIT_TEST(OnEmpty_WhenGet_ThenWaitUntilReceived) {
auto cache = MakeLocalCache<TString, TString>(
NMonotonic::CreateDefaultMonotonicTimeProvider(), {.TTL = TDuration::Zero()});
auto cached = TCachedQuery<TString, TString>(cache, [&](const TString& key) {
return NThreading::MakeFuture<TString>(key);
});
TString value = cached("1").GetValueSync();
UNIT_ASSERT_VALUES_EQUAL(value, "1");
}
Y_UNIT_TEST(OnExpired_WhenApplied_ThenDefferedUpdateAndReturnOld) {
size_t queried = 0;
auto cache = MakeLocalCache<TString, TString>(
NMonotonic::CreateDefaultMonotonicTimeProvider(), {.TTL = TDuration::Zero()});
auto cached = TCachedQuery<TString, TString>(cache, [&](const TString& key) {
queried += 1;
return NThreading::MakeFuture<TString>(key);
});
cache->Update("1", "2");
TString value = cached("1").GetValueSync();
UNIT_ASSERT_VALUES_EQUAL(value, "2");
UNIT_ASSERT_VALUES_EQUAL(queried, 1);
UNIT_ASSERT_VALUES_EQUAL(cached("1").GetValueSync(), "1");
}
Y_UNIT_TEST(OnQueryError_WhenApplied_ThenNoDeadlock) {
size_t queried = 0;
auto cache = MakeLocalCache<TString, TString>(
NMonotonic::CreateDefaultMonotonicTimeProvider(), {.TTL = TDuration::Zero()});
auto cached = TCachedQuery<TString, TString>(cache, [&](const TString&) {
queried += 1;
try {
ythrow yexception() << "T_T";
} catch (...) {
return NThreading::MakeErrorFuture<TString>(std::current_exception());
}
});
UNIT_ASSERT_EXCEPTION(cached("1").GetValueSync(), yexception);
UNIT_ASSERT_EXCEPTION(cached("1").GetValueSync(), yexception);
UNIT_ASSERT_VALUES_EQUAL(queried, 2);
}
Y_UNIT_TEST(OnFailingCacheGet_WhenApplied_ThenNoDeadlock) {
size_t queried = 0;
auto cache = MakeIntrusive<TFailableCache>();
auto cached = TCachedQuery<TString, TString>(cache, [&](const TString& key) {
queried += 1;
return NThreading::MakeFuture<TString>(key);
});
cache->IsGetFailing = true;
UNIT_ASSERT_EXCEPTION(cached("1").GetValueSync(), yexception);
UNIT_ASSERT_VALUES_EQUAL(queried, 0);
}
Y_UNIT_TEST(OnFailingCacheUpdate_WhenApplied_ThenNoErrorAndNotCached) {
size_t queried = 0;
auto cache = MakeIntrusive<TFailableCache>();
auto cached = TCachedQuery<TString, TString>(cache, [&](const TString& key) {
queried += 1;
return NThreading::MakeFuture<TString>(key);
});
cache->IsExpired = true;
cache->IsUpdateFailing = true;
UNIT_ASSERT_VALUES_EQUAL(cached("1").GetValueSync(), "1");
UNIT_ASSERT_VALUES_EQUAL(cached("1").GetValueSync(), "1");
UNIT_ASSERT_VALUES_EQUAL(queried, 2);
}
} // Y_UNIT_TEST_SUITE(CachedQueryTests)
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