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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.
// The testcases in this file are expected to pass or be skipped with any value
// of ABSL_MIN_LOG_LEVEL
#ifndef ABSL_LOG_LOG_BASIC_TEST_IMPL_H_
#define ABSL_LOG_LOG_BASIC_TEST_IMPL_H_
// Verify that both sets of macros behave identically by parameterizing the
// entire test file.
#ifndef ABSL_TEST_LOG
#error ABSL_TEST_LOG must be defined for these tests to work.
#endif
#include <cerrno>
#include <sstream>
#include <string>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/base/internal/sysinfo.h"
#include "absl/base/log_severity.h"
#include "absl/log/globals.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_entry.h"
#include "absl/log/scoped_mock_log.h"
namespace absl_log_internal {
#if GTEST_HAS_DEATH_TEST
using ::absl::log_internal::DeathTestExpectedLogging;
using ::absl::log_internal::DeathTestUnexpectedLogging;
using ::absl::log_internal::DeathTestValidateExpectations;
using ::absl::log_internal::DiedOfFatal;
using ::absl::log_internal::DiedOfQFatal;
#endif
using ::absl::log_internal::LoggingEnabledAt;
using ::absl::log_internal::LogSeverity;
using ::absl::log_internal::Prefix;
using ::absl::log_internal::SourceBasename;
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::TimestampInMatchWindow;
using ::absl::log_internal::Verbosity;
using ::testing::AnyNumber;
using ::testing::Eq;
using ::testing::IsEmpty;
using ::testing::IsTrue;
class BasicLogTest : public testing::TestWithParam<absl::LogSeverityAtLeast> {};
std::string ThresholdName(
testing::TestParamInfo<absl::LogSeverityAtLeast> severity) {
std::stringstream ostr;
ostr << severity.param;
return ostr.str().substr(
severity.param == absl::LogSeverityAtLeast::kInfinity ? 0 : 2);
}
INSTANTIATE_TEST_SUITE_P(WithParam, BasicLogTest,
testing::Values(absl::LogSeverityAtLeast::kInfo,
absl::LogSeverityAtLeast::kWarning,
absl::LogSeverityAtLeast::kError,
absl::LogSeverityAtLeast::kFatal,
absl::LogSeverityAtLeast::kInfinity),
ThresholdName);
TEST_P(BasicLogTest, Info) {
absl::log_internal::ScopedMinLogLevel scoped_min_log_level(GetParam());
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int log_line = __LINE__ + 1;
auto do_log = [] { ABSL_TEST_LOG(INFO) << "hello world"; };
if (LoggingEnabledAt(absl::LogSeverity::kInfo)) {
EXPECT_CALL(
test_sink,
Send(AllOf(SourceFilename(Eq(__FILE__)),
SourceBasename(Eq("log_basic_test_impl.h")),
SourceLine(Eq(log_line)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kInfo)),
TimestampInMatchWindow(),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("hello world")),
Verbosity(Eq(absl::LogEntry::kNoVerbosityLevel)),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
literal: "hello world"
})pb")),
Stacktrace(IsEmpty()))));
}
test_sink.StartCapturingLogs();
do_log();
}
TEST_P(BasicLogTest, Warning) {
absl::log_internal::ScopedMinLogLevel scoped_min_log_level(GetParam());
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int log_line = __LINE__ + 1;
auto do_log = [] { ABSL_TEST_LOG(WARNING) << "hello world"; };
if (LoggingEnabledAt(absl::LogSeverity::kWarning)) {
EXPECT_CALL(
test_sink,
Send(AllOf(SourceFilename(Eq(__FILE__)),
SourceBasename(Eq("log_basic_test_impl.h")),
SourceLine(Eq(log_line)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kWarning)),
TimestampInMatchWindow(),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("hello world")),
Verbosity(Eq(absl::LogEntry::kNoVerbosityLevel)),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
literal: "hello world"
})pb")),
Stacktrace(IsEmpty()))));
}
test_sink.StartCapturingLogs();
do_log();
}
TEST_P(BasicLogTest, Error) {
absl::log_internal::ScopedMinLogLevel scoped_min_log_level(GetParam());
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int log_line = __LINE__ + 1;
auto do_log = [] { ABSL_TEST_LOG(ERROR) << "hello world"; };
if (LoggingEnabledAt(absl::LogSeverity::kError)) {
EXPECT_CALL(
test_sink,
Send(AllOf(SourceFilename(Eq(__FILE__)),
SourceBasename(Eq("log_basic_test_impl.h")),
SourceLine(Eq(log_line)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kError)),
TimestampInMatchWindow(),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("hello world")),
Verbosity(Eq(absl::LogEntry::kNoVerbosityLevel)),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
literal: "hello world"
})pb")),
Stacktrace(IsEmpty()))));
}
test_sink.StartCapturingLogs();
do_log();
}
#if GTEST_HAS_DEATH_TEST
using BasicLogDeathTest = BasicLogTest;
INSTANTIATE_TEST_SUITE_P(WithParam, BasicLogDeathTest,
testing::Values(absl::LogSeverityAtLeast::kInfo,
absl::LogSeverityAtLeast::kFatal,
absl::LogSeverityAtLeast::kInfinity),
ThresholdName);
TEST_P(BasicLogDeathTest, Fatal) {
absl::log_internal::ScopedMinLogLevel scoped_min_log_level(GetParam());
const int log_line = __LINE__ + 1;
auto do_log = [] { ABSL_TEST_LOG(FATAL) << "hello world"; };
EXPECT_EXIT(
{
absl::ScopedMockLog test_sink(
absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink, Send)
.Times(AnyNumber())
.WillRepeatedly(DeathTestUnexpectedLogging());
::testing::InSequence s;
// Note the logic in DeathTestValidateExpectations() caters for the case
// of logging being disabled at FATAL level.
if (LoggingEnabledAt(absl::LogSeverity::kFatal)) {
// The first call without the stack trace.
EXPECT_CALL(
test_sink,
Send(AllOf(SourceFilename(Eq(__FILE__)),
SourceBasename(Eq("log_basic_test_impl.h")),
SourceLine(Eq(log_line)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kFatal)),
TimestampInMatchWindow(),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("hello world")),
Verbosity(Eq(absl::LogEntry::kNoVerbosityLevel)),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { literal: "hello world" })pb")),
Stacktrace(IsEmpty()))))
.WillOnce(DeathTestExpectedLogging());
// The second call with the stack trace.
EXPECT_CALL(
test_sink,
Send(AllOf(SourceFilename(Eq(__FILE__)),
SourceBasename(Eq("log_basic_test_impl.h")),
SourceLine(Eq(log_line)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kFatal)),
TimestampInMatchWindow(),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("hello world")),
Verbosity(Eq(absl::LogEntry::kNoVerbosityLevel)),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { literal: "hello world" })pb")),
Stacktrace(Not(IsEmpty())))))
.WillOnce(DeathTestExpectedLogging());
}
test_sink.StartCapturingLogs();
do_log();
},
DiedOfFatal, DeathTestValidateExpectations());
}
TEST_P(BasicLogDeathTest, QFatal) {
absl::log_internal::ScopedMinLogLevel scoped_min_log_level(GetParam());
const int log_line = __LINE__ + 1;
auto do_log = [] { ABSL_TEST_LOG(QFATAL) << "hello world"; };
EXPECT_EXIT(
{
absl::ScopedMockLog test_sink(
absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink, Send)
.Times(AnyNumber())
.WillRepeatedly(DeathTestUnexpectedLogging());
if (LoggingEnabledAt(absl::LogSeverity::kFatal)) {
EXPECT_CALL(
test_sink,
Send(AllOf(SourceFilename(Eq(__FILE__)),
SourceBasename(Eq("log_basic_test_impl.h")),
SourceLine(Eq(log_line)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kFatal)),
TimestampInMatchWindow(),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("hello world")),
Verbosity(Eq(absl::LogEntry::kNoVerbosityLevel)),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { literal: "hello world" })pb")),
Stacktrace(IsEmpty()))))
.WillOnce(DeathTestExpectedLogging());
}
test_sink.StartCapturingLogs();
do_log();
},
DiedOfQFatal, DeathTestValidateExpectations());
}
#endif
TEST_P(BasicLogTest, Level) {
absl::log_internal::ScopedMinLogLevel scoped_min_log_level(GetParam());
for (auto severity : {absl::LogSeverity::kInfo, absl::LogSeverity::kWarning,
absl::LogSeverity::kError}) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int log_line = __LINE__ + 2;
auto do_log = [severity] {
ABSL_TEST_LOG(LEVEL(severity)) << "hello world";
};
if (LoggingEnabledAt(severity)) {
EXPECT_CALL(
test_sink,
Send(AllOf(SourceFilename(Eq(__FILE__)),
SourceBasename(Eq("log_basic_test_impl.h")),
SourceLine(Eq(log_line)), Prefix(IsTrue()),
LogSeverity(Eq(severity)), TimestampInMatchWindow(),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("hello world")),
Verbosity(Eq(absl::LogEntry::kNoVerbosityLevel)),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
literal: "hello world"
})pb")),
Stacktrace(IsEmpty()))));
}
test_sink.StartCapturingLogs();
do_log();
}
}
#if GTEST_HAS_DEATH_TEST
TEST_P(BasicLogDeathTest, Level) {
// TODO(b/242568884): re-enable once bug is fixed.
// absl::log_internal::ScopedMinLogLevel scoped_min_log_level(GetParam());
// Ensure that `severity` is not a compile-time constant to prove that
// `LOG(LEVEL(severity))` works regardless:
auto volatile severity = absl::LogSeverity::kFatal;
const int log_line = __LINE__ + 1;
auto do_log = [severity] { ABSL_TEST_LOG(LEVEL(severity)) << "hello world"; };
EXPECT_EXIT(
{
absl::ScopedMockLog test_sink(
absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink, Send)
.Times(AnyNumber())
.WillRepeatedly(DeathTestUnexpectedLogging());
::testing::InSequence s;
if (LoggingEnabledAt(absl::LogSeverity::kFatal)) {
EXPECT_CALL(
test_sink,
Send(AllOf(SourceFilename(Eq(__FILE__)),
SourceBasename(Eq("log_basic_test_impl.h")),
SourceLine(Eq(log_line)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kFatal)),
TimestampInMatchWindow(),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("hello world")),
Verbosity(Eq(absl::LogEntry::kNoVerbosityLevel)),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { literal: "hello world" })pb")),
Stacktrace(IsEmpty()))))
.WillOnce(DeathTestExpectedLogging());
EXPECT_CALL(
test_sink,
Send(AllOf(SourceFilename(Eq(__FILE__)),
SourceBasename(Eq("log_basic_test_impl.h")),
SourceLine(Eq(log_line)), Prefix(IsTrue()),
LogSeverity(Eq(absl::LogSeverity::kFatal)),
TimestampInMatchWindow(),
ThreadID(Eq(absl::base_internal::GetTID())),
TextMessage(Eq("hello world")),
Verbosity(Eq(absl::LogEntry::kNoVerbosityLevel)),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { literal: "hello world" })pb")),
Stacktrace(Not(IsEmpty())))))
.WillOnce(DeathTestExpectedLogging());
}
test_sink.StartCapturingLogs();
do_log();
},
DiedOfFatal, DeathTestValidateExpectations());
}
#endif
TEST_P(BasicLogTest, LevelClampsNegativeValues) {
absl::log_internal::ScopedMinLogLevel scoped_min_log_level(GetParam());
if (!LoggingEnabledAt(absl::LogSeverity::kInfo)) {
GTEST_SKIP() << "This test cases required INFO log to be enabled";
return;
}
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink, Send(LogSeverity(Eq(absl::LogSeverity::kInfo))));
test_sink.StartCapturingLogs();
ABSL_TEST_LOG(LEVEL(-1)) << "hello world";
}
TEST_P(BasicLogTest, LevelClampsLargeValues) {
absl::log_internal::ScopedMinLogLevel scoped_min_log_level(GetParam());
if (!LoggingEnabledAt(absl::LogSeverity::kError)) {
GTEST_SKIP() << "This test cases required ERROR log to be enabled";
return;
}
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink, Send(LogSeverity(Eq(absl::LogSeverity::kError))));
test_sink.StartCapturingLogs();
ABSL_TEST_LOG(LEVEL(static_cast<int>(absl::LogSeverity::kFatal) + 1))
<< "hello world";
}
TEST(ErrnoPreservationTest, InSeverityExpression) {
errno = 77;
int saved_errno;
ABSL_TEST_LOG(LEVEL((saved_errno = errno, absl::LogSeverity::kInfo)));
EXPECT_THAT(saved_errno, Eq(77));
}
TEST(ErrnoPreservationTest, InStreamedExpression) {
if (!LoggingEnabledAt(absl::LogSeverity::kInfo)) {
GTEST_SKIP() << "This test cases required INFO log to be enabled";
return;
}
errno = 77;
int saved_errno = 0;
ABSL_TEST_LOG(INFO) << (saved_errno = errno, "hello world");
EXPECT_THAT(saved_errno, Eq(77));
}
TEST(ErrnoPreservationTest, AfterStatement) {
errno = 77;
ABSL_TEST_LOG(INFO);
const int saved_errno = errno;
EXPECT_THAT(saved_errno, Eq(77));
}
// Tests that using a variable/parameter in a logging statement suppresses
// unused-variable/parameter warnings.
// -----------------------------------------------------------------------
class UnusedVariableWarningCompileTest {
// These four don't prove anything unless `ABSL_MIN_LOG_LEVEL` is greater than
// `kInfo`.
static void LoggedVariable() {
const int x = 0;
ABSL_TEST_LOG(INFO) << x;
}
static void LoggedParameter(const int x) { ABSL_TEST_LOG(INFO) << x; }
static void SeverityVariable() {
const int x = 0;
ABSL_TEST_LOG(LEVEL(x)) << "hello world";
}
static void SeverityParameter(const int x) {
ABSL_TEST_LOG(LEVEL(x)) << "hello world";
}
};
} // namespace absl_log_internal
#endif // ABSL_LOG_LOG_BASIC_TEST_IMPL_H_