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//
// Copyright 2022 The Abseil Authors.
//
// 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
//
// https://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 "absl/log/log_streamer.h"
#include <ios>
#include <iostream>
#include <utility>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/base/attributes.h"
#include "absl/base/internal/sysinfo.h"
#include "absl/base/log_severity.h"
#include "absl/log/internal/test_actions.h"
#include "absl/log/internal/test_helpers.h"
#include "absl/log/internal/test_matchers.h"
#include "absl/log/log.h"
#include "absl/log/scoped_mock_log.h"
#include "absl/strings/string_view.h"
namespace {
using ::absl::log_internal::DeathTestExpectedLogging;
using ::absl::log_internal::DeathTestUnexpectedLogging;
using ::absl::log_internal::DeathTestValidateExpectations;
#if GTEST_HAS_DEATH_TEST
using ::absl::log_internal::DiedOfFatal;
#endif
using ::absl::log_internal::InMatchWindow;
using ::absl::log_internal::LogSeverity;
using ::absl::log_internal::Prefix;
using ::absl::log_internal::SourceFilename;
using ::absl::log_internal::SourceLine;
using ::absl::log_internal::Stacktrace;
using ::absl::log_internal::TextMessage;
using ::absl::log_internal::ThreadID;
using ::absl::log_internal::Timestamp;
using ::testing::_;
using ::testing::AnyNumber;
using ::testing::Eq;
using ::testing::HasSubstr;
using ::testing::IsEmpty;
using ::testing::IsTrue;
auto* test_env ABSL_ATTRIBUTE_UNUSED = ::testing::AddGlobalTestEnvironment(
new absl::log_internal::LogTestEnvironment);
void WriteToStream(absl::string_view data, std::ostream* os) {
*os << "WriteToStream: " << data;
}
void WriteToStreamRef(absl::string_view data, std::ostream& os) {
os << "WriteToStreamRef: " << data;
}
TEST(LogStreamerTest, LogInfoStreamer) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(
test_sink,
Send(AllOf(
SourceFilename(Eq("path/file.cc")), SourceLine(Eq(1234)),
Prefix(IsTrue()), LogSeverity(Eq(absl::LogSeverity::kInfo)),
Timestamp(InMatchWindow()),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("WriteToStream: foo")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234), InMatchWindow(),
Eq(logging::proto::INFO), Eq(absl::base_internal::GetTID()),
ElementsAre(EqualsProto(R"pb(str: "WriteToStream: foo")pb")))),
Stacktrace(IsEmpty()))));
test_sink.StartCapturingLogs();
WriteToStream("foo", &absl::LogInfoStreamer("path/file.cc", 1234).stream());
}
TEST(LogStreamerTest, LogWarningStreamer) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(
test_sink,
Send(AllOf(
SourceFilename(Eq("path/file.cc")), SourceLine(Eq(1234)),
Prefix(IsTrue()), LogSeverity(Eq(absl::LogSeverity::kWarning)),
Timestamp(InMatchWindow()),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("WriteToStream: foo")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234), InMatchWindow(),
Eq(logging::proto::WARNING), Eq(absl::base_internal::GetTID()),
ElementsAre(EqualsProto(R"pb(str: "WriteToStream: foo")pb")))),
Stacktrace(IsEmpty()))));
test_sink.StartCapturingLogs();
WriteToStream("foo",
&absl::LogWarningStreamer("path/file.cc", 1234).stream());
}
TEST(LogStreamerTest, LogErrorStreamer) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(
test_sink,
Send(AllOf(
SourceFilename(Eq("path/file.cc")), SourceLine(Eq(1234)),
Prefix(IsTrue()), LogSeverity(Eq(absl::LogSeverity::kError)),
Timestamp(InMatchWindow()),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("WriteToStream: foo")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234), InMatchWindow(),
Eq(logging::proto::ERROR), Eq(absl::base_internal::GetTID()),
ElementsAre(EqualsProto(R"pb(str: "WriteToStream: foo")pb")))),
Stacktrace(IsEmpty()))));
test_sink.StartCapturingLogs();
WriteToStream("foo", &absl::LogErrorStreamer("path/file.cc", 1234).stream());
}
#if GTEST_HAS_DEATH_TEST
TEST(LogStreamerDeathTest, LogFatalStreamer) {
EXPECT_EXIT(
{
absl::ScopedMockLog test_sink;
EXPECT_CALL(test_sink, Send)
.Times(AnyNumber())
.WillRepeatedly(DeathTestUnexpectedLogging());
EXPECT_CALL(test_sink,
Send(AllOf(SourceFilename(Eq("path/file.cc")),
SourceLine(Eq(1234)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kFatal)),
Timestamp(InMatchWindow()),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("WriteToStream: foo")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234),
InMatchWindow(), Eq(logging::proto::FATAL),
Eq(absl::base_internal::GetTID()),
ElementsAre(EqualsProto(
R"pb(str: "WriteToStream: foo")pb")))))))
.WillOnce(DeathTestExpectedLogging());
test_sink.StartCapturingLogs();
WriteToStream("foo",
&absl::LogFatalStreamer("path/file.cc", 1234).stream());
},
DiedOfFatal, DeathTestValidateExpectations());
}
#endif
#ifdef NDEBUG
TEST(LogStreamerTest, LogDebugFatalStreamer) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(
test_sink,
Send(AllOf(
SourceFilename(Eq("path/file.cc")), SourceLine(Eq(1234)),
Prefix(IsTrue()), LogSeverity(Eq(absl::LogSeverity::kError)),
Timestamp(InMatchWindow()),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("WriteToStream: foo")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234), InMatchWindow(),
Eq(logging::proto::ERROR), Eq(absl::base_internal::GetTID()),
ElementsAre(EqualsProto(R"pb(str: "WriteToStream: foo")pb")))),
Stacktrace(IsEmpty()))));
test_sink.StartCapturingLogs();
WriteToStream("foo",
&absl::LogDebugFatalStreamer("path/file.cc", 1234).stream());
}
#elif GTEST_HAS_DEATH_TEST
TEST(LogStreamerDeathTest, LogDebugFatalStreamer) {
EXPECT_EXIT(
{
absl::ScopedMockLog test_sink;
EXPECT_CALL(test_sink, Send)
.Times(AnyNumber())
.WillRepeatedly(DeathTestUnexpectedLogging());
EXPECT_CALL(test_sink,
Send(AllOf(SourceFilename(Eq("path/file.cc")),
SourceLine(Eq(1234)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kFatal)),
Timestamp(InMatchWindow()),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("WriteToStream: foo")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234),
InMatchWindow(), Eq(logging::proto::FATAL),
Eq(absl::base_internal::GetTID()),
ElementsAre(EqualsProto(
R"pb(str: "WriteToStream: foo")pb")))))))
.WillOnce(DeathTestExpectedLogging());
test_sink.StartCapturingLogs();
WriteToStream(
"foo", &absl::LogDebugFatalStreamer("path/file.cc", 1234).stream());
},
DiedOfFatal, DeathTestValidateExpectations());
}
#endif
TEST(LogStreamerTest, LogStreamer) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(
test_sink,
Send(AllOf(
SourceFilename(Eq("path/file.cc")), SourceLine(Eq(1234)),
Prefix(IsTrue()), LogSeverity(Eq(absl::LogSeverity::kError)),
Timestamp(InMatchWindow()),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("WriteToStream: foo")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234), InMatchWindow(),
Eq(logging::proto::ERROR), Eq(absl::base_internal::GetTID()),
ElementsAre(EqualsProto(R"pb(str: "WriteToStream: foo")pb")))),
Stacktrace(IsEmpty()))));
test_sink.StartCapturingLogs();
WriteToStream(
"foo", &absl::LogStreamer(absl::LogSeverity::kError, "path/file.cc", 1234)
.stream());
}
#if GTEST_HAS_DEATH_TEST
TEST(LogStreamerDeathTest, LogStreamer) {
EXPECT_EXIT(
{
absl::ScopedMockLog test_sink;
EXPECT_CALL(test_sink, Send)
.Times(AnyNumber())
.WillRepeatedly(DeathTestUnexpectedLogging());
EXPECT_CALL(test_sink,
Send(AllOf(SourceFilename(Eq("path/file.cc")),
SourceLine(Eq(1234)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kFatal)),
Timestamp(InMatchWindow()),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("WriteToStream: foo")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234),
InMatchWindow(), Eq(logging::proto::FATAL),
Eq(absl::base_internal::GetTID()),
ElementsAre(EqualsProto(
R"pb(str: "WriteToStream: foo")pb")))))))
.WillOnce(DeathTestExpectedLogging());
test_sink.StartCapturingLogs();
WriteToStream("foo", &absl::LogStreamer(absl::LogSeverity::kFatal,
"path/file.cc", 1234)
.stream());
},
DiedOfFatal, DeathTestValidateExpectations());
}
#endif
TEST(LogStreamerTest, PassedByReference) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(
test_sink,
Send(AllOf(
SourceFilename(Eq("path/file.cc")), SourceLine(Eq(1234)),
TextMessage(Eq("WriteToStreamRef: foo")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234), _, _, _,
ElementsAre(EqualsProto(R"pb(str: "WriteToStreamRef: foo")pb")))),
Stacktrace(IsEmpty()))));
test_sink.StartCapturingLogs();
WriteToStreamRef("foo", absl::LogInfoStreamer("path/file.cc", 1234).stream());
}
TEST(LogStreamerTest, StoredAsLocal) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
auto streamer = absl::LogInfoStreamer("path/file.cc", 1234);
WriteToStream("foo", &streamer.stream());
streamer.stream() << " ";
WriteToStreamRef("bar", streamer.stream());
// The call should happen when `streamer` goes out of scope; if it
// happened before this `EXPECT_CALL` the call would be unexpected and the
// test would fail.
EXPECT_CALL(
test_sink,
Send(AllOf(
SourceFilename(Eq("path/file.cc")), SourceLine(Eq(1234)),
TextMessage(Eq("WriteToStream: foo WriteToStreamRef: bar")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234), _, _, _,
ElementsAre(EqualsProto(
R"pb(str: "WriteToStream: foo WriteToStreamRef: bar")pb")))),
Stacktrace(IsEmpty()))));
test_sink.StartCapturingLogs();
}
#if GTEST_HAS_DEATH_TEST
TEST(LogStreamerDeathTest, StoredAsLocal) {
EXPECT_EXIT(
{
// This is fatal when it goes out of scope, but not until then:
auto streamer = absl::LogFatalStreamer("path/file.cc", 1234);
std::cerr << "I'm still alive" << std::endl;
WriteToStream("foo", &streamer.stream());
},
DiedOfFatal, HasSubstr("I'm still alive"));
}
#endif
TEST(LogStreamerTest, LogsEmptyLine) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(SourceFilename(Eq("path/file.cc")),
SourceLine(Eq(1234)), TextMessage(Eq("")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234), _, _, _,
ElementsAre(EqualsProto(R"pb(str: "")pb")))),
Stacktrace(IsEmpty()))));
test_sink.StartCapturingLogs();
absl::LogInfoStreamer("path/file.cc", 1234);
}
#if GTEST_HAS_DEATH_TEST
TEST(LogStreamerDeathTest, LogsEmptyLine) {
EXPECT_EXIT(
{
absl::ScopedMockLog test_sink;
EXPECT_CALL(test_sink, Log)
.Times(AnyNumber())
.WillRepeatedly(DeathTestUnexpectedLogging());
EXPECT_CALL(
test_sink,
Send(AllOf(SourceFilename(Eq("path/file.cc")), TextMessage(Eq("")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), _, _, _, _,
ElementsAre(EqualsProto(R"pb(str: "")pb")))))))
.WillOnce(DeathTestExpectedLogging());
test_sink.StartCapturingLogs();
// This is fatal even though it's never used:
auto streamer = absl::LogFatalStreamer("path/file.cc", 1234);
},
DiedOfFatal, DeathTestValidateExpectations());
}
#endif
TEST(LogStreamerTest, MoveConstruction) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(
test_sink,
Send(AllOf(
SourceFilename(Eq("path/file.cc")), SourceLine(Eq(1234)),
LogSeverity(Eq(absl::LogSeverity::kInfo)),
TextMessage(Eq("hello 0x10 world 0x10")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234), _, Eq(logging::proto::INFO), _,
ElementsAre(EqualsProto(R"pb(str: "hello 0x10 world 0x10")pb")))),
Stacktrace(IsEmpty()))));
test_sink.StartCapturingLogs();
auto streamer1 = absl::LogInfoStreamer("path/file.cc", 1234);
streamer1.stream() << "hello " << std::hex << 16;
absl::LogStreamer streamer2(std::move(streamer1));
streamer2.stream() << " world " << 16;
}
TEST(LogStreamerTest, MoveAssignment) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
testing::InSequence seq;
EXPECT_CALL(
test_sink,
Send(AllOf(
SourceFilename(Eq("path/file2.cc")), SourceLine(Eq(5678)),
LogSeverity(Eq(absl::LogSeverity::kWarning)),
TextMessage(Eq("something else")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file2.cc"), Eq(5678), _, Eq(logging::proto::WARNING), _,
ElementsAre(EqualsProto(R"pb(str: "something else")pb")))),
Stacktrace(IsEmpty()))));
EXPECT_CALL(
test_sink,
Send(AllOf(
SourceFilename(Eq("path/file.cc")), SourceLine(Eq(1234)),
LogSeverity(Eq(absl::LogSeverity::kInfo)),
TextMessage(Eq("hello 0x10 world 0x10")),
ENCODED_MESSAGE(MatchesEvent(
Eq("path/file.cc"), Eq(1234), _, Eq(logging::proto::INFO), _,
ElementsAre(EqualsProto(R"pb(str: "hello 0x10 world 0x10")pb")))),
Stacktrace(IsEmpty()))));
test_sink.StartCapturingLogs();
auto streamer1 = absl::LogInfoStreamer("path/file.cc", 1234);
streamer1.stream() << "hello " << std::hex << 16;
auto streamer2 = absl::LogWarningStreamer("path/file2.cc", 5678);
streamer2.stream() << "something else";
streamer2 = std::move(streamer1);
streamer2.stream() << " world " << 16;
}
TEST(LogStreamerTest, CorrectDefaultFlags) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
// The `boolalpha` and `showbase` flags should be set by default, to match
// `LOG`.
EXPECT_CALL(test_sink, Send(AllOf(TextMessage(Eq("false0xdeadbeef")))))
.Times(2);
test_sink.StartCapturingLogs();
absl::LogInfoStreamer("path/file.cc", 1234).stream()
<< false << std::hex << 0xdeadbeef;
LOG(INFO) << false << std::hex << 0xdeadbeef;
}
} // namespace
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