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test: extend networking test coverage (#13914) 

* test: extend coverage of virtioproxy networking mode

* test: add dns test variations to all networking classes

* remove bridged dns variations

* pr feedback

---------

Co-authored-by: Ben Hillis <benhill@ntdev.microsoft.com>
This commit is contained in:
Ben Hillis 2025-12-16 14:20:26 -08:00 committed by GitHub
parent c6ac7433b1
commit d48d374c8c
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1 changed files with 168 additions and 0 deletions
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168
test/windows/NetworkTests.cpp
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@ -175,6 +175,7 @@ class NetworkTests
WSL_TEST_CLASS(NetworkTests)
friend class MirroredTests;
friend class BridgedTests;
friend class VirtioProxyTests;
static std::wstring SockaddrToString(const SOCKADDR_INET* sockAddr)
@ -790,6 +791,51 @@ class NetworkTests
VERIFY_IS_TRUE(!out.empty());
}
static void VerifyDnsResolutionBasic()
{
// Verify basic DNS resolution using getent
auto [out, _] = LxsstuLaunchWslAndCaptureOutput(L"getent ahosts bing.com", 0);
VERIFY_IS_TRUE(!out.empty());
}
static void VerifyDnsResolutionDig()
{
if (HostHasInternetConnectivity(AF_INET))
{
// Test A record resolution (IPv4) with both UDP and TCP
VerifyDigDnsResolution(L"dig +short +time=5 A bing.com");
VerifyDigDnsResolution(L"dig +tcp +short +time=5 A bing.com");
// Test reverse DNS lookup
VerifyDigDnsResolution(L"dig +short +time=5 -x 8.8.8.8");
VerifyDigDnsResolution(L"dig +tcp +short +time=5 -x 8.8.8.8");
}
else
{
LogSkipped("Host does not have IPv4 internet connectivity. Skipping IPv4 DNS tests.");
}
if (HostHasInternetConnectivity(AF_INET6))
{
// Test AAAA record resolution (IPv6) with both UDP and TCP
VerifyDigDnsResolution(L"dig +short +time=5 AAAA bing.com");
VerifyDigDnsResolution(L"dig +tcp +short +time=5 AAAA bing.com");
}
else
{
LogSkipped("Host does not have IPv6 internet connectivity. Skipping IPv6 DNS tests.");
}
}
static void VerifyDnsResolutionRecordTypes()
{
// Test various DNS record types
VerifyDigDnsResolution(L"dig +short +time=5 MX bing.com");
VerifyDigDnsResolution(L"dig +short +time=5 NS bing.com");
VerifyDigDnsResolution(L"dig +short +time=5 TXT bing.com");
VerifyDigDnsResolution(L"dig +short +time=5 SOA bing.com");
}
static void VerifyDnsQueries()
{
// query for A/IPv4 records
@ -1006,6 +1052,27 @@ class NetworkTests
VERIFY_ARE_EQUAL(expected, out.c_str());
}
TEST_METHOD(DnsResolutionBasic)
{
WSL2_TEST_ONLY();
NetworkTests::VerifyDnsResolutionBasic();
}
TEST_METHOD(DnsResolutionDig)
{
WSL2_TEST_ONLY();
NetworkTests::VerifyDnsResolutionDig();
}
TEST_METHOD(DnsResolutionRecordTypes)
{
WSL2_TEST_ONLY();
NetworkTests::VerifyDnsResolutionRecordTypes();
}
static void ClearHttpProxySettings(bool userScope)
{
auto command = L"Set-WinhttpProxy -SettingScope Machine -Proxy \\\"\\\"";
@ -4302,6 +4369,36 @@ class MirroredTests
VERIFY_IS_FALSE(Watchdog.IsExpired());
}
TEST_METHOD(DnsResolutionBasic)
{
MIRRORED_NETWORKING_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::Mirrored}));
WaitForMirroredStateInLinux();
NetworkTests::VerifyDnsResolutionBasic();
}
TEST_METHOD(DnsResolutionDig)
{
MIRRORED_NETWORKING_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::Mirrored}));
WaitForMirroredStateInLinux();
NetworkTests::VerifyDnsResolutionDig();
}
TEST_METHOD(DnsResolutionRecordTypes)
{
MIRRORED_NETWORKING_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::Mirrored}));
WaitForMirroredStateInLinux();
NetworkTests::VerifyDnsResolutionRecordTypes();
}
};
class BridgedTests
@ -4416,6 +4513,8 @@ class VirtioProxyTests
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
// Verify that we have a working connection
NetworkTests::GuestClient(L"tcp-connect:bing.com:80");
}
@ -4424,6 +4523,8 @@ class VirtioProxyTests
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
if (!NetworkTests::HostHasInternetConnectivity(AF_INET))
{
LogSkipped("Host does not have IPv4 internet connectivity. Skipping...");
@ -4437,6 +4538,8 @@ class VirtioProxyTests
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
if (!NetworkTests::HostHasInternetConnectivity(AF_INET6))
{
LogSkipped("Host does not have IPv6 internet connectivity. Skipping...");
@ -4450,6 +4553,8 @@ class VirtioProxyTests
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
const auto state = NetworkTests::GetInterfaceState(L"eth0");
VERIFY_IS_FALSE(state.V4Addresses.empty());
VERIFY_IS_TRUE(state.Gateway.has_value());
@ -4464,6 +4569,8 @@ class VirtioProxyTests
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
// Make sure the VM doesn't time out
WslKeepAlive keepAlive;
@ -4491,6 +4598,67 @@ class VirtioProxyTests
VERIFY_IS_TRUE(bound);
}
TEST_METHOD(LoopbackGuestToHost)
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
// Verify guest can connect to host on loopback (TCP only, UDP not supported)
NetworkTests::VerifyLoopbackGuestToHost(L"127.0.0.1", IPPROTO_TCP);
NetworkTests::VerifyLoopbackGuestToHost(L"0.0.0.0", IPPROTO_TCP);
// TODO: enable when v6 loopback is supported
// NetworkTests::VerifyLoopbackGuestToHost(L"::1", IPPROTO_TCP);
// NetworkTests::VerifyLoopbackGuestToHost(L"::", IPPROTO_TCP);
}
TEST_METHOD(UdpBindDoesNotPreventTcpBind)
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
auto tcpPort = NetworkTests::BindGuestPort(L"TCP4-LISTEN:1234", true);
auto udpPort = NetworkTests::BindGuestPort(L"UDP4-LISTEN:1234", true);
}
TEST_METHOD(HostUdpBindDoesNotPreventGuestTcpBind)
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
auto udpPort = NetworkTests::BindHostPort(2345, SOCK_DGRAM, IPPROTO_UDP, true);
auto tcpPort = NetworkTests::BindGuestPort(L"TCP4-LISTEN:2345", true);
}
TEST_METHOD(DnsResolutionBasic)
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
NetworkTests::VerifyDnsResolutionBasic();
}
TEST_METHOD(DnsResolutionDig)
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
NetworkTests::VerifyDnsResolutionDig();
}
TEST_METHOD(DnsResolutionRecordTypes)
{
VIRTIOPROXY_TEST_ONLY();
m_config->Update(LxssGenerateTestConfig({.networkingMode = wsl::core::NetworkingMode::VirtioProxy}));
NetworkTests::VerifyDnsResolutionRecordTypes();
}
TEST_METHOD(HttpProxySimple)
{
VIRTIOPROXY_TEST_ONLY();