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/*
* Copyright (C) 2016, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <cerrno>
#include <memory>
#include <tuple>
#include <utility>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "wifilogd/tests/mock_command_processor.h"
#include "wifilogd/tests/mock_os.h"
#include "wifilogd/main_loop.h"
#include "wifilogd/protocol.h"
namespace android {
namespace wifilogd {
namespace {
using ::testing::_;
using ::testing::AnyNumber;
using ::testing::Ge;
using ::testing::Return;
using ::testing::StrictMock;
constexpr int kControlSocketFd = 100;
constexpr char kFakeSocketName[] = "fake-socket";
class MainLoopTest : public ::testing::Test {
public:
MainLoopTest()
: os_(new StrictMock<MockOs>()),
command_processor_(new StrictMock<MockCommandProcessor>()) {
EXPECT_CALL(*os_, GetControlSocket(kFakeSocketName))
.WillOnce(Return(std::tuple<size_t, Os::Errno>{kControlSocketFd, 0}));
main_loop_ = std::make_unique<MainLoop>(
kFakeSocketName, std::unique_ptr<Os>{os_},
std::unique_ptr<CommandProcessor>{command_processor_});
}
protected:
std::unique_ptr<MainLoop> main_loop_;
// We use raw pointers to access the mocks, since ownership passes
// to |main_loop_|.
StrictMock<MockOs>* os_;
StrictMock<MockCommandProcessor>* command_processor_;
};
} // namespace
TEST_F(MainLoopTest, RunOnceReadsFromCorrectSocket) {
EXPECT_CALL(*os_, ReceiveDatagram(kControlSocketFd, _, _));
EXPECT_CALL(*command_processor_, ProcessCommand(_, _, _)).Times(AnyNumber());
main_loop_->RunOnce();
}
TEST_F(MainLoopTest, RunOnceReadsWithSufficientlyLargeBuffer) {
EXPECT_CALL(*os_, ReceiveDatagram(_, _, Ge(protocol::kMaxMessageSize)));
EXPECT_CALL(*command_processor_, ProcessCommand(_, _, _)).Times(AnyNumber());
main_loop_->RunOnce();
}
TEST_F(MainLoopTest, RunOncePassesSmallestValidMessageToCommandProcessor) {
EXPECT_CALL(*os_, ReceiveDatagram(_, _, _))
.WillOnce(
Return(std::tuple<size_t, Os::Errno>{sizeof(protocol::Command), 0}));
EXPECT_CALL(*command_processor_,
ProcessCommand(_, sizeof(protocol::Command), _));
main_loop_->RunOnce();
}
TEST_F(MainLoopTest, RunOncePassesLargestValidMessageToCommandProcessor) {
EXPECT_CALL(*os_, ReceiveDatagram(_, _, _))
.WillOnce(
Return(std::tuple<size_t, Os::Errno>{protocol::kMaxMessageSize, 0}));
EXPECT_CALL(*command_processor_,
ProcessCommand(_, protocol::kMaxMessageSize, _));
main_loop_->RunOnce();
}
TEST_F(MainLoopTest, RunOncePassesRuntMessageToCommandProcessor) {
EXPECT_CALL(*os_, ReceiveDatagram(_, _, _))
.WillOnce(Return(std::tuple<size_t, Os::Errno>{0, 0}));
EXPECT_CALL(*command_processor_, ProcessCommand(_, 0, _));
main_loop_->RunOnce();
}
TEST_F(MainLoopTest, RunOnceLimitsMaxSizeReportedToCommandProcessor) {
EXPECT_CALL(*os_, ReceiveDatagram(_, _, _))
.WillOnce(Return(
std::tuple<size_t, Os::Errno>{protocol::kMaxMessageSize + 1, 0}));
EXPECT_CALL(*command_processor_,
ProcessCommand(_, protocol::kMaxMessageSize, _));
main_loop_->RunOnce();
}
TEST_F(MainLoopTest, RunOnceSleepsAndDoesNotPassDataToCommandProcessorOnError) {
EXPECT_CALL(*os_, ReceiveDatagram(_, _, protocol::kMaxMessageSize))
.WillOnce(Return(std::tuple<size_t, Os::Errno>{0, EINTR}));
EXPECT_CALL(*os_, Nanosleep(_));
EXPECT_CALL(*command_processor_, ProcessCommand(_, _, _)).Times(0);
main_loop_->RunOnce();
}
// Per
// github.com/google/googletest/blob/master/googletest/docs/AdvancedGuide.md#death-tests,
// death tests should be specially named.
using MainLoopDeathTest = MainLoopTest;
TEST_F(MainLoopDeathTest, CtorFailureToFetchControlSocketCausesDeath) {
auto os = std::make_unique<StrictMock<MockOs>>();
auto command_processor = std::make_unique<StrictMock<MockCommandProcessor>>();
ON_CALL(*os, GetControlSocket(kFakeSocketName))
.WillByDefault(Return(std::tuple<size_t, Os::Errno>{-1, ERANGE}));
EXPECT_DEATH(
MainLoop(kFakeSocketName, std::move(os), std::move(command_processor)),
"Failed to get control socket");
}
TEST_F(MainLoopDeathTest, RunOnceTerminatesOnUnexpectedError) {
ON_CALL(*os_, ReceiveDatagram(_, _, protocol::kMaxMessageSize))
.WillByDefault(Return(std::tuple<size_t, Os::Errno>{0, EFAULT}));
EXPECT_DEATH(main_loop_->RunOnce(), "Unexpected error");
}
} // namespace wifilogd
} // namespace android
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