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#include "dnsresolver.h"
#include <library/cpp/actors/testlib/test_runtime.h>
#include <library/cpp/testing/unittest/registar.h>
#include <util/string/builder.h>
#include <ares.h>
using namespace NActors;
using namespace NActors::NDnsResolver;
Y_UNIT_TEST_SUITE(DnsResolver) {
struct TSilentUdpServer {
TInetDgramSocket Socket;
ui16 Port;
TSilentUdpServer() {
TSockAddrInet addr("127.0.0.1", 0);
int err = Socket.Bind(&addr);
Y_VERIFY(err == 0, "Cannot bind a udp socket");
Port = addr.GetPort();
}
};
Y_UNIT_TEST(ResolveLocalHost) {
TTestActorRuntimeBase runtime;
runtime.Initialize();
auto sender = runtime.AllocateEdgeActor();
auto resolver = runtime.Register(CreateSimpleDnsResolver());
runtime.Send(new IEventHandle(resolver, sender, new TEvDns::TEvGetHostByName("localhost", AF_UNSPEC)),
0, true);
auto ev = runtime.GrabEdgeEventRethrow<TEvDns::TEvGetHostByNameResult>(sender);
UNIT_ASSERT_VALUES_EQUAL_C(ev->Get()->Status, 0, ev->Get()->ErrorText);
size_t addrs = ev->Get()->AddrsV4.size() + ev->Get()->AddrsV6.size();
UNIT_ASSERT_C(addrs > 0, "Got " << addrs << " addresses");
}
Y_UNIT_TEST(ResolveYandexRu) {
TTestActorRuntimeBase runtime;
runtime.Initialize();
auto sender = runtime.AllocateEdgeActor();
auto resolver = runtime.Register(CreateSimpleDnsResolver());
runtime.Send(new IEventHandle(resolver, sender, new TEvDns::TEvGetHostByName("yandex.ru", AF_UNSPEC)),
0, true);
auto ev = runtime.GrabEdgeEventRethrow<TEvDns::TEvGetHostByNameResult>(sender);
UNIT_ASSERT_VALUES_EQUAL_C(ev->Get()->Status, 0, ev->Get()->ErrorText);
size_t addrs = ev->Get()->AddrsV4.size() + ev->Get()->AddrsV6.size();
UNIT_ASSERT_C(addrs > 0, "Got " << addrs << " addresses");
}
Y_UNIT_TEST(GetAddrYandexRu) {
TTestActorRuntimeBase runtime;
runtime.Initialize();
auto sender = runtime.AllocateEdgeActor();
auto resolver = runtime.Register(CreateSimpleDnsResolver());
runtime.Send(new IEventHandle(resolver, sender, new TEvDns::TEvGetAddr("yandex.ru", AF_UNSPEC)),
0, true);
auto ev = runtime.GrabEdgeEventRethrow<TEvDns::TEvGetAddrResult>(sender);
UNIT_ASSERT_VALUES_EQUAL_C(ev->Get()->Status, 0, ev->Get()->ErrorText);
UNIT_ASSERT_C(ev->Get()->IsV4() || ev->Get()->IsV6(), "Expect v4 or v6 address");
}
Y_UNIT_TEST(ResolveTimeout) {
TSilentUdpServer server;
TTestActorRuntimeBase runtime;
runtime.Initialize();
auto sender = runtime.AllocateEdgeActor();
TSimpleDnsResolverOptions options;
options.Timeout = TDuration::MilliSeconds(250);
options.Attempts = 2;
options.Servers.emplace_back(TStringBuilder() << "127.0.0.1:" << server.Port);
auto resolver = runtime.Register(CreateSimpleDnsResolver(options));
runtime.Send(new IEventHandle(resolver, sender, new TEvDns::TEvGetHostByName("timeout.yandex.ru", AF_INET)),
0, true);
auto ev = runtime.GrabEdgeEventRethrow<TEvDns::TEvGetHostByNameResult>(sender);
UNIT_ASSERT_VALUES_EQUAL_C(ev->Get()->Status, ARES_ETIMEOUT, ev->Get()->ErrorText);
}
Y_UNIT_TEST(ResolveGracefulStop) {
TSilentUdpServer server;
TTestActorRuntimeBase runtime;
runtime.Initialize();
auto sender = runtime.AllocateEdgeActor();
TSimpleDnsResolverOptions options;
options.Timeout = TDuration::Seconds(5);
options.Attempts = 5;
options.Servers.emplace_back(TStringBuilder() << "127.0.0.1:" << server.Port);
auto resolver = runtime.Register(CreateSimpleDnsResolver(options));
runtime.Send(new IEventHandle(resolver, sender, new TEvDns::TEvGetHostByName("timeout.yandex.ru", AF_INET)),
0, true);
runtime.Send(new IEventHandle(resolver, sender, new TEvents::TEvPoison), 0, true);
auto ev = runtime.GrabEdgeEventRethrow<TEvDns::TEvGetHostByNameResult>(sender);
UNIT_ASSERT_VALUES_EQUAL_C(ev->Get()->Status, ARES_ECANCELLED, ev->Get()->ErrorText);
}
}
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