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nix/src/libstore-tests/worker-protocol.cc
John Ericson 15658b259f Separate headers from source files
The short answer for why we need to do this is so we can consistently do
`#include "nix/..."`. Without this change, there are ways to still make
that work, but they are hacky, and they have downsides such as making it
harder to make sure headers from the wrong Nix library (e..g.
`libnixexpr` headers in `libnixutil`) aren't being used.

The C API alraedy used `nix_api_*`, so its headers are *not* put in
subdirectories accordingly.

Progress on #7876

We resisted doing this for a while because it would be annoying to not
have the header source file pairs close by / easy to change file
path/name from one to the other. But I am ameliorating that with
symlinks in the next commit.

(cherry picked from commit f3e1c47f47)
2025-03-31 18:04:04 -04:00

779 lines
25 KiB
C++

#include <regex>
#include <thread>
#include <nlohmann/json.hpp>
#include <gtest/gtest.h>
#include "nix/worker-protocol.hh"
#include "nix/worker-protocol-connection.hh"
#include "nix/worker-protocol-impl.hh"
#include "nix/derived-path.hh"
#include "nix/build-result.hh"
#include "nix/tests/protocol.hh"
#include "nix/tests/characterization.hh"
namespace nix {
const char workerProtoDir[] = "worker-protocol";
struct WorkerProtoTest : VersionedProtoTest<WorkerProto, workerProtoDir>
{
/**
* For serializers that don't care about the minimum version, we
* used the oldest one: 1.10.
*/
WorkerProto::Version defaultVersion = 1 << 8 | 10;
};
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
string,
"string",
defaultVersion,
(std::tuple<std::string, std::string, std::string, std::string, std::string> {
"",
"hi",
"white rabbit",
"大白兔",
"oh no \0\0\0 what was that!",
}))
#ifndef DOXYGEN_SKIP
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
storePath,
"store-path",
defaultVersion,
(std::tuple<StorePath, StorePath> {
StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo" },
StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo-bar" },
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
contentAddress,
"content-address",
defaultVersion,
(std::tuple<ContentAddress, ContentAddress, ContentAddress> {
ContentAddress {
.method = ContentAddressMethod::Raw::Text,
.hash = hashString(HashAlgorithm::SHA256, "Derive(...)"),
},
ContentAddress {
.method = ContentAddressMethod::Raw::Flat,
.hash = hashString(HashAlgorithm::SHA1, "blob blob..."),
},
ContentAddress {
.method = ContentAddressMethod::Raw::NixArchive,
.hash = hashString(HashAlgorithm::SHA256, "(...)"),
},
}))
#endif
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
derivedPath_1_29,
"derived-path-1.29",
1 << 8 | 29,
(std::tuple<DerivedPath, DerivedPath, DerivedPath> {
DerivedPath::Opaque {
.path = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo" },
},
DerivedPath::Built {
.drvPath = makeConstantStorePathRef(StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar.drv",
}),
.outputs = OutputsSpec::All { },
},
DerivedPath::Built {
.drvPath = makeConstantStorePathRef(StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar.drv",
}),
.outputs = OutputsSpec::Names { "x", "y" },
},
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
derivedPath_1_30,
"derived-path-1.30",
1 << 8 | 30,
(std::tuple<DerivedPath, DerivedPath, DerivedPath, DerivedPath> {
DerivedPath::Opaque {
.path = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo" },
},
DerivedPath::Opaque {
.path = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo.drv" },
},
DerivedPath::Built {
.drvPath = makeConstantStorePathRef(StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar.drv",
}),
.outputs = OutputsSpec::All { },
},
DerivedPath::Built {
.drvPath = makeConstantStorePathRef(StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar.drv",
}),
.outputs = OutputsSpec::Names { "x", "y" },
},
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
drvOutput,
"drv-output",
defaultVersion,
(std::tuple<DrvOutput, DrvOutput> {
{
.drvHash = Hash::parseSRI("sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc="),
.outputName = "baz",
},
DrvOutput {
.drvHash = Hash::parseSRI("sha256-b4afnqKCO9oWXgYHb9DeQ2berSwOjS27rSd9TxXDc/U="),
.outputName = "quux",
},
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
realisation,
"realisation",
defaultVersion,
(std::tuple<Realisation, Realisation> {
Realisation {
.id = DrvOutput {
.drvHash = Hash::parseSRI("sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc="),
.outputName = "baz",
},
.outPath = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo" },
.signatures = { "asdf", "qwer" },
},
Realisation {
.id = {
.drvHash = Hash::parseSRI("sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc="),
.outputName = "baz",
},
.outPath = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo" },
.signatures = { "asdf", "qwer" },
.dependentRealisations = {
{
DrvOutput {
.drvHash = Hash::parseSRI("sha256-b4afnqKCO9oWXgYHb9DeQ2berSwOjS27rSd9TxXDc/U="),
.outputName = "quux",
},
StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo" },
},
},
},
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
buildResult_1_27,
"build-result-1.27",
1 << 8 | 27,
({
using namespace std::literals::chrono_literals;
std::tuple<BuildResult, BuildResult, BuildResult> t {
BuildResult {
.status = BuildResult::OutputRejected,
.errorMsg = "no idea why",
},
BuildResult {
.status = BuildResult::NotDeterministic,
.errorMsg = "no idea why",
},
BuildResult {
.status = BuildResult::Built,
},
};
t;
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
buildResult_1_28,
"build-result-1.28",
1 << 8 | 28,
({
using namespace std::literals::chrono_literals;
std::tuple<BuildResult, BuildResult, BuildResult> t {
BuildResult {
.status = BuildResult::OutputRejected,
.errorMsg = "no idea why",
},
BuildResult {
.status = BuildResult::NotDeterministic,
.errorMsg = "no idea why",
},
BuildResult {
.status = BuildResult::Built,
.builtOutputs = {
{
"foo",
{
.id = DrvOutput {
.drvHash = Hash::parseSRI("sha256-b4afnqKCO9oWXgYHb9DeQ2berSwOjS27rSd9TxXDc/U="),
.outputName = "foo",
},
.outPath = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo" },
},
},
{
"bar",
{
.id = DrvOutput {
.drvHash = Hash::parseSRI("sha256-b4afnqKCO9oWXgYHb9DeQ2berSwOjS27rSd9TxXDc/U="),
.outputName = "bar",
},
.outPath = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar" },
},
},
},
},
};
t;
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
buildResult_1_29,
"build-result-1.29",
1 << 8 | 29,
({
using namespace std::literals::chrono_literals;
std::tuple<BuildResult, BuildResult, BuildResult> t {
BuildResult {
.status = BuildResult::OutputRejected,
.errorMsg = "no idea why",
},
BuildResult {
.status = BuildResult::NotDeterministic,
.errorMsg = "no idea why",
.timesBuilt = 3,
.isNonDeterministic = true,
.startTime = 30,
.stopTime = 50,
},
BuildResult {
.status = BuildResult::Built,
.timesBuilt = 1,
.builtOutputs = {
{
"foo",
{
.id = DrvOutput {
.drvHash = Hash::parseSRI("sha256-b4afnqKCO9oWXgYHb9DeQ2berSwOjS27rSd9TxXDc/U="),
.outputName = "foo",
},
.outPath = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo" },
},
},
{
"bar",
{
.id = DrvOutput {
.drvHash = Hash::parseSRI("sha256-b4afnqKCO9oWXgYHb9DeQ2berSwOjS27rSd9TxXDc/U="),
.outputName = "bar",
},
.outPath = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar" },
},
},
},
.startTime = 30,
.stopTime = 50,
},
};
t;
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
buildResult_1_37,
"build-result-1.37",
1 << 8 | 37,
({
using namespace std::literals::chrono_literals;
std::tuple<BuildResult, BuildResult, BuildResult> t {
BuildResult {
.status = BuildResult::OutputRejected,
.errorMsg = "no idea why",
},
BuildResult {
.status = BuildResult::NotDeterministic,
.errorMsg = "no idea why",
.timesBuilt = 3,
.isNonDeterministic = true,
.startTime = 30,
.stopTime = 50,
},
BuildResult {
.status = BuildResult::Built,
.timesBuilt = 1,
.builtOutputs = {
{
"foo",
{
.id = DrvOutput {
.drvHash = Hash::parseSRI("sha256-b4afnqKCO9oWXgYHb9DeQ2berSwOjS27rSd9TxXDc/U="),
.outputName = "foo",
},
.outPath = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo" },
},
},
{
"bar",
{
.id = DrvOutput {
.drvHash = Hash::parseSRI("sha256-b4afnqKCO9oWXgYHb9DeQ2berSwOjS27rSd9TxXDc/U="),
.outputName = "bar",
},
.outPath = StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar" },
},
},
},
.startTime = 30,
.stopTime = 50,
.cpuUser = std::chrono::microseconds(500s),
.cpuSystem = std::chrono::microseconds(604s),
},
};
t;
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
keyedBuildResult_1_29,
"keyed-build-result-1.29",
1 << 8 | 29,
({
using namespace std::literals::chrono_literals;
std::tuple<KeyedBuildResult, KeyedBuildResult/*, KeyedBuildResult*/> t {
KeyedBuildResult {
{
.status = KeyedBuildResult::OutputRejected,
.errorMsg = "no idea why",
},
/* .path = */ DerivedPath::Opaque {
StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-xxx" },
},
},
KeyedBuildResult {
{
.status = KeyedBuildResult::NotDeterministic,
.errorMsg = "no idea why",
.timesBuilt = 3,
.isNonDeterministic = true,
.startTime = 30,
.stopTime = 50,
},
/* .path = */ DerivedPath::Built {
.drvPath = makeConstantStorePathRef(StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar.drv",
}),
.outputs = OutputsSpec::Names { "out" },
},
},
};
t;
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
unkeyedValidPathInfo_1_15,
"unkeyed-valid-path-info-1.15",
1 << 8 | 15,
(std::tuple<UnkeyedValidPathInfo, UnkeyedValidPathInfo> {
({
UnkeyedValidPathInfo info {
Hash::parseSRI("sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc="),
};
info.registrationTime = 23423;
info.narSize = 34878;
info;
}),
({
UnkeyedValidPathInfo info {
Hash::parseSRI("sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc="),
};
info.deriver = StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar.drv",
};
info.references = {
StorePath {
"g1w7hyyyy1w7hy3qg1w7hy3qgqqqqy3q-foo.drv",
},
};
info.registrationTime = 23423;
info.narSize = 34878;
info;
}),
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
validPathInfo_1_15,
"valid-path-info-1.15",
1 << 8 | 15,
(std::tuple<ValidPathInfo, ValidPathInfo> {
({
ValidPathInfo info {
StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar",
},
UnkeyedValidPathInfo {
Hash::parseSRI("sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc="),
},
};
info.registrationTime = 23423;
info.narSize = 34878;
info;
}),
({
ValidPathInfo info {
StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar",
},
UnkeyedValidPathInfo {
Hash::parseSRI("sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc="),
},
};
info.deriver = StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar.drv",
};
info.references = {
// other reference
StorePath {
"g1w7hyyyy1w7hy3qg1w7hy3qgqqqqy3q-foo",
},
// self reference
StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar",
},
};
info.registrationTime = 23423;
info.narSize = 34878;
info;
}),
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
validPathInfo_1_16,
"valid-path-info-1.16",
1 << 8 | 16,
(std::tuple<ValidPathInfo, ValidPathInfo, ValidPathInfo> {
({
ValidPathInfo info {
StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar",
},
UnkeyedValidPathInfo {
Hash::parseSRI("sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc="),
},
};
info.registrationTime = 23423;
info.narSize = 34878;
info.ultimate = true;
info;
}),
({
ValidPathInfo info {
StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar",
},
UnkeyedValidPathInfo {
Hash::parseSRI("sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc="),
},
};
info.deriver = StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar.drv",
};
info.references = {
// other reference
StorePath {
"g1w7hyyyy1w7hy3qg1w7hy3qgqqqqy3q-foo",
},
// self reference
StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar",
},
};
info.registrationTime = 23423;
info.narSize = 34878;
info.sigs = {
"fake-sig-1",
"fake-sig-2",
},
info;
}),
({
ValidPathInfo info {
*LibStoreTest::store,
"foo",
FixedOutputInfo {
.method = FileIngestionMethod::NixArchive,
.hash = hashString(HashAlgorithm::SHA256, "(...)"),
.references = {
.others = {
StorePath {
"g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-bar",
},
},
.self = true,
},
},
Hash::parseSRI("sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc="),
};
info.registrationTime = 23423;
info.narSize = 34878;
info;
}),
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
buildMode,
"build-mode",
defaultVersion,
(std::tuple<BuildMode, BuildMode, BuildMode> {
bmNormal,
bmRepair,
bmCheck,
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
optionalTrustedFlag,
"optional-trusted-flag",
defaultVersion,
(std::tuple<std::optional<TrustedFlag>, std::optional<TrustedFlag>, std::optional<TrustedFlag>> {
std::nullopt,
std::optional { Trusted },
std::optional { NotTrusted },
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
vector,
"vector",
defaultVersion,
(std::tuple<std::vector<std::string>, std::vector<std::string>, std::vector<std::string>, std::vector<std::vector<std::string>>> {
{ },
{ "" },
{ "", "foo", "bar" },
{ {}, { "" }, { "", "1", "2" } },
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
set,
"set",
defaultVersion,
(std::tuple<std::set<std::string>, std::set<std::string>, std::set<std::string>, std::set<std::set<std::string>>> {
{ },
{ "" },
{ "", "foo", "bar" },
{ {}, { "" }, { "", "1", "2" } },
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
optionalStorePath,
"optional-store-path",
defaultVersion,
(std::tuple<std::optional<StorePath>, std::optional<StorePath>> {
std::nullopt,
std::optional {
StorePath { "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo-bar" },
},
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
optionalContentAddress,
"optional-content-address",
defaultVersion,
(std::tuple<std::optional<ContentAddress>, std::optional<ContentAddress>> {
std::nullopt,
std::optional {
ContentAddress {
.method = ContentAddressMethod::Raw::Flat,
.hash = hashString(HashAlgorithm::SHA1, "blob blob..."),
},
},
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
clientHandshakeInfo_1_30,
"client-handshake-info_1_30",
1 << 8 | 30,
(std::tuple<WorkerProto::ClientHandshakeInfo> {
{},
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
clientHandshakeInfo_1_33,
"client-handshake-info_1_33",
1 << 8 | 33,
(std::tuple<WorkerProto::ClientHandshakeInfo, WorkerProto::ClientHandshakeInfo> {
{
.daemonNixVersion = std::optional { "foo" },
},
{
.daemonNixVersion = std::optional { "bar" },
},
}))
VERSIONED_CHARACTERIZATION_TEST(
WorkerProtoTest,
clientHandshakeInfo_1_35,
"client-handshake-info_1_35",
1 << 8 | 35,
(std::tuple<WorkerProto::ClientHandshakeInfo, WorkerProto::ClientHandshakeInfo> {
{
.daemonNixVersion = std::optional { "foo" },
.remoteTrustsUs = std::optional { NotTrusted },
},
{
.daemonNixVersion = std::optional { "bar" },
.remoteTrustsUs = std::optional { Trusted },
},
}))
TEST_F(WorkerProtoTest, handshake_log)
{
CharacterizationTest::writeTest("handshake-to-client", [&]() -> std::string {
StringSink toClientLog;
Pipe toClient, toServer;
toClient.create();
toServer.create();
WorkerProto::Version clientResult;
auto thread = std::thread([&]() {
FdSink out { toServer.writeSide.get() };
FdSource in0 { toClient.readSide.get() };
TeeSource in { in0, toClientLog };
clientResult = std::get<0>(WorkerProto::BasicClientConnection::handshake(
out, in, defaultVersion, {}));
});
{
FdSink out { toClient.writeSide.get() };
FdSource in { toServer.readSide.get() };
WorkerProto::BasicServerConnection::handshake(
out, in, defaultVersion, {});
};
thread.join();
return std::move(toClientLog.s);
});
}
TEST_F(WorkerProtoTest, handshake_features)
{
Pipe toClient, toServer;
toClient.create();
toServer.create();
std::tuple<WorkerProto::Version, std::set<WorkerProto::Feature>> clientResult;
auto clientThread = std::thread([&]() {
FdSink out { toServer.writeSide.get() };
FdSource in { toClient.readSide.get() };
clientResult = WorkerProto::BasicClientConnection::handshake(
out, in, 123, {"bar", "aap", "mies", "xyzzy"});
});
FdSink out { toClient.writeSide.get() };
FdSource in { toServer.readSide.get() };
auto daemonResult = WorkerProto::BasicServerConnection::handshake(
out, in, 456, {"foo", "bar", "xyzzy"});
clientThread.join();
EXPECT_EQ(clientResult, daemonResult);
EXPECT_EQ(std::get<0>(clientResult), 123);
EXPECT_EQ(std::get<1>(clientResult), std::set<WorkerProto::Feature>({"bar", "xyzzy"}));
}
/// Has to be a `BufferedSink` for handshake.
struct NullBufferedSink : BufferedSink {
void writeUnbuffered(std::string_view data) override { }
};
TEST_F(WorkerProtoTest, handshake_client_replay)
{
CharacterizationTest::readTest("handshake-to-client", [&](std::string toClientLog) {
NullBufferedSink nullSink;
StringSource in { toClientLog };
auto clientResult = std::get<0>(WorkerProto::BasicClientConnection::handshake(
nullSink, in, defaultVersion, {}));
EXPECT_EQ(clientResult, defaultVersion);
});
}
TEST_F(WorkerProtoTest, handshake_client_truncated_replay_throws)
{
CharacterizationTest::readTest("handshake-to-client", [&](std::string toClientLog) {
for (size_t len = 0; len < toClientLog.size(); ++len) {
NullBufferedSink nullSink;
auto substring = toClientLog.substr(0, len);
StringSource in{substring};
if (len < 8) {
EXPECT_THROW(
WorkerProto::BasicClientConnection::handshake(nullSink, in, defaultVersion, {}), EndOfFile);
} else {
// Not sure why cannot keep on checking for `EndOfFile`.
EXPECT_THROW(WorkerProto::BasicClientConnection::handshake(nullSink, in, defaultVersion, {}), Error);
}
}
});
}
TEST_F(WorkerProtoTest, handshake_client_corrupted_throws)
{
CharacterizationTest::readTest("handshake-to-client", [&](const std::string toClientLog) {
for (size_t idx = 0; idx < toClientLog.size(); ++idx) {
// corrupt a copy
std::string toClientLogCorrupt = toClientLog;
toClientLogCorrupt[idx] *= 4;
++toClientLogCorrupt[idx];
NullBufferedSink nullSink;
StringSource in { toClientLogCorrupt };
if (idx < 4 || idx == 9) {
// magic bytes don't match
EXPECT_THROW(
WorkerProto::BasicClientConnection::handshake(
nullSink, in, defaultVersion, {}),
Error);
} else if (idx < 8 || idx >= 12) {
// Number out of bounds
EXPECT_THROW(
WorkerProto::BasicClientConnection::handshake(
nullSink, in, defaultVersion, {}),
SerialisationError);
} else {
auto ver = std::get<0>(WorkerProto::BasicClientConnection::handshake(
nullSink, in, defaultVersion, {}));
// `std::min` of this and the other version saves us
EXPECT_EQ(ver, defaultVersion);
}
}
});
}
}