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log_format_test.cc
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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 <math.h>
#include <iomanip>
#include <ios>
#include <limits>
#include <ostream>
#include <sstream>
#include <string>
#include <type_traits>
#ifdef __ANDROID__
#include <android/api-level.h>
#endif
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/log/check.h"
#include "absl/log/internal/test_matchers.h"
#include "absl/log/log.h"
#include "absl/log/scoped_mock_log.h"
#include "absl/strings/match.h"
#include "absl/strings/str_cat.h"
#include "absl/strings/str_format.h"
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
namespace {
using ::absl::log_internal::AsString;
using ::absl::log_internal::MatchesOstream;
using ::absl::log_internal::RawEncodedMessage;
using ::absl::log_internal::TextMessage;
using ::absl::log_internal::TextPrefix;
using ::testing::AllOf;
using ::testing::AnyOf;
using ::testing::Each;
using ::testing::EndsWith;
using ::testing::Eq;
using ::testing::Ge;
using ::testing::IsEmpty;
using ::testing::Le;
using ::testing::SizeIs;
using ::testing::Types;
// Some aspects of formatting streamed data (e.g. pointer handling) are
// implementation-defined. Others are buggy in supported implementations.
// These tests validate that the formatting matches that performed by a
// `std::ostream` and also that the result is one of a list of expected formats.
std::ostringstream ComparisonStream() {
std::ostringstream str;
str.setf(std::ios_base::showbase | std::ios_base::boolalpha |
std::ios_base::internal);
return str;
}
TEST(LogFormatTest, NoMessage) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int log_line = __LINE__ + 1;
auto do_log = [] { LOG(INFO); };
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(ComparisonStream())),
TextPrefix(AsString(EndsWith(absl::StrCat(
" log_format_test.cc:", log_line, "] ")))),
TextMessage(IsEmpty()),
ENCODED_MESSAGE(HasValues(IsEmpty())))));
test_sink.StartCapturingLogs();
do_log();
}
template <typename T>
class CharLogFormatTest : public testing::Test {};
using CharTypes = Types<char, signed char, unsigned char>;
TYPED_TEST_SUITE(CharLogFormatTest, CharTypes);
TYPED_TEST(CharLogFormatTest, Printable) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = 'x';
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)), TextMessage(Eq("x")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("x"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(CharLogFormatTest, Unprintable) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
constexpr auto value = static_cast<TypeParam>(0xeeu);
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("\xee")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("\xee"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
template <typename T>
class UnsignedIntLogFormatTest : public testing::Test {};
using UnsignedIntTypes = Types<unsigned short, unsigned int, // NOLINT
unsigned long, unsigned long long>; // NOLINT
TYPED_TEST_SUITE(UnsignedIntLogFormatTest, UnsignedIntTypes);
TYPED_TEST(UnsignedIntLogFormatTest, Positive) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = 224;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("224")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("224"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(UnsignedIntLogFormatTest, BitfieldPositive) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const struct {
TypeParam bits : 6;
} value{42};
auto comparison_stream = ComparisonStream();
comparison_stream << value.bits;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)), TextMessage(Eq("42")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("42"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value.bits;
}
template <typename T>
class SignedIntLogFormatTest : public testing::Test {};
using SignedIntTypes =
Types<signed short, signed int, signed long, signed long long>; // NOLINT
TYPED_TEST_SUITE(SignedIntLogFormatTest, SignedIntTypes);
TYPED_TEST(SignedIntLogFormatTest, Positive) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = 224;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("224")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("224"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(SignedIntLogFormatTest, Negative) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = -112;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("-112")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("-112"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(SignedIntLogFormatTest, BitfieldPositive) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const struct {
TypeParam bits : 6;
} value{21};
auto comparison_stream = ComparisonStream();
comparison_stream << value.bits;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)), TextMessage(Eq("21")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("21"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value.bits;
}
TYPED_TEST(SignedIntLogFormatTest, BitfieldNegative) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const struct {
TypeParam bits : 6;
} value{-21};
auto comparison_stream = ComparisonStream();
comparison_stream << value.bits;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("-21")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("-21"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value.bits;
}
// Ignore these test cases on GCC due to "is too small to hold all values ..."
// warning.
#if !defined(__GNUC__) || defined(__clang__)
// The implementation may choose a signed or unsigned integer type to represent
// this enum, so it may be tested by either `UnsignedEnumLogFormatTest` or
// `SignedEnumLogFormatTest`.
enum MyUnsignedEnum {
MyUnsignedEnum_ZERO = 0,
MyUnsignedEnum_FORTY_TWO = 42,
MyUnsignedEnum_TWO_HUNDRED_TWENTY_FOUR = 224,
};
enum MyUnsignedIntEnum : unsigned int {
MyUnsignedIntEnum_ZERO = 0,
MyUnsignedIntEnum_FORTY_TWO = 42,
MyUnsignedIntEnum_TWO_HUNDRED_TWENTY_FOUR = 224,
};
template <typename T>
class UnsignedEnumLogFormatTest : public testing::Test {};
using UnsignedEnumTypes = std::conditional<
std::is_signed<std::underlying_type<MyUnsignedEnum>::type>::value,
Types<MyUnsignedIntEnum>, Types<MyUnsignedEnum, MyUnsignedIntEnum>>::type;
TYPED_TEST_SUITE(UnsignedEnumLogFormatTest, UnsignedEnumTypes);
TYPED_TEST(UnsignedEnumLogFormatTest, Positive) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = static_cast<TypeParam>(224);
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("224")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("224"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(UnsignedEnumLogFormatTest, BitfieldPositive) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const struct {
TypeParam bits : 6;
} value{static_cast<TypeParam>(42)};
auto comparison_stream = ComparisonStream();
comparison_stream << value.bits;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)), TextMessage(Eq("42")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("42"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value.bits;
}
enum MySignedEnum {
MySignedEnum_NEGATIVE_ONE_HUNDRED_TWELVE = -112,
MySignedEnum_NEGATIVE_TWENTY_ONE = -21,
MySignedEnum_ZERO = 0,
MySignedEnum_TWENTY_ONE = 21,
MySignedEnum_TWO_HUNDRED_TWENTY_FOUR = 224,
};
enum MySignedIntEnum : signed int {
MySignedIntEnum_NEGATIVE_ONE_HUNDRED_TWELVE = -112,
MySignedIntEnum_NEGATIVE_TWENTY_ONE = -21,
MySignedIntEnum_ZERO = 0,
MySignedIntEnum_TWENTY_ONE = 21,
MySignedIntEnum_TWO_HUNDRED_TWENTY_FOUR = 224,
};
template <typename T>
class SignedEnumLogFormatTest : public testing::Test {};
using SignedEnumTypes = std::conditional<
std::is_signed<std::underlying_type<MyUnsignedEnum>::type>::value,
Types<MyUnsignedEnum, MySignedEnum, MySignedIntEnum>,
Types<MySignedEnum, MySignedIntEnum>>::type;
TYPED_TEST_SUITE(SignedEnumLogFormatTest, SignedEnumTypes);
TYPED_TEST(SignedEnumLogFormatTest, Positive) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = static_cast<TypeParam>(224);
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("224")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("224"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(SignedEnumLogFormatTest, Negative) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = static_cast<TypeParam>(-112);
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("-112")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("-112"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(SignedEnumLogFormatTest, BitfieldPositive) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const struct {
TypeParam bits : 6;
} value{static_cast<TypeParam>(21)};
auto comparison_stream = ComparisonStream();
comparison_stream << value.bits;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)), TextMessage(Eq("21")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("21"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value.bits;
}
TYPED_TEST(SignedEnumLogFormatTest, BitfieldNegative) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const struct {
TypeParam bits : 6;
} value{static_cast<TypeParam>(-21)};
auto comparison_stream = ComparisonStream();
comparison_stream << value.bits;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("-21")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("-21"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value.bits;
}
#endif
TEST(FloatLogFormatTest, Positive) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const float value = 6.02e23f;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("6.02e+23")),
ENCODED_MESSAGE(HasValues(
ElementsAre(ValueWithStr(Eq("6.02e+23"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TEST(FloatLogFormatTest, Negative) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const float value = -6.02e23f;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("-6.02e+23")),
ENCODED_MESSAGE(HasValues(
ElementsAre(ValueWithStr(Eq("-6.02e+23"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TEST(FloatLogFormatTest, NegativeExponent) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const float value = 6.02e-23f;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("6.02e-23")),
ENCODED_MESSAGE(HasValues(
ElementsAre(ValueWithStr(Eq("6.02e-23"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TEST(DoubleLogFormatTest, Positive) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 6.02e23;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("6.02e+23")),
ENCODED_MESSAGE(HasValues(
ElementsAre(ValueWithStr(Eq("6.02e+23"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TEST(DoubleLogFormatTest, Negative) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = -6.02e23;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("-6.02e+23")),
ENCODED_MESSAGE(HasValues(
ElementsAre(ValueWithStr(Eq("-6.02e+23"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TEST(DoubleLogFormatTest, NegativeExponent) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 6.02e-23;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("6.02e-23")),
ENCODED_MESSAGE(HasValues(
ElementsAre(ValueWithStr(Eq("6.02e-23"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
template <typename T>
class FloatingPointLogFormatTest : public testing::Test {};
using FloatingPointTypes = Types<float, double>;
TYPED_TEST_SUITE(FloatingPointLogFormatTest, FloatingPointTypes);
TYPED_TEST(FloatingPointLogFormatTest, Zero) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = 0.0;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)), TextMessage(Eq("0")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("0"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(FloatingPointLogFormatTest, Integer) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = 1.0;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)), TextMessage(Eq("1")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("1"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(FloatingPointLogFormatTest, Infinity) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = std::numeric_limits<TypeParam>::infinity();
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("inf"), Eq("Inf"))),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("inf"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(FloatingPointLogFormatTest, NegativeInfinity) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = -std::numeric_limits<TypeParam>::infinity();
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("-inf"), Eq("-Inf"))),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("-inf"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(FloatingPointLogFormatTest, NaN) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = std::numeric_limits<TypeParam>::quiet_NaN();
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("nan"), Eq("NaN"))),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("nan"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(FloatingPointLogFormatTest, NegativeNaN) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value =
std::copysign(std::numeric_limits<TypeParam>::quiet_NaN(), -1.0);
auto comparison_stream = ComparisonStream();
comparison_stream << value;
// On RISC-V, don't expect that formatting -NaN produces the same string as
// streaming it. #ifdefing out just the relevant line breaks the MSVC build,
// so duplicate the entire EXPECT_CALL.
#ifdef __riscv
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(AnyOf(Eq("-nan"), Eq("nan"), Eq("NaN"),
Eq("-nan(ind)"))),
ENCODED_MESSAGE(HasValues(ElementsAre(AnyOf(
ValueWithStr(Eq("-nan")), ValueWithStr(Eq("nan")),
ValueWithStr(Eq("-nan(ind)")))))))));
#else
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("-nan"), Eq("nan"), Eq("NaN"),
Eq("-nan(ind)"))),
ENCODED_MESSAGE(HasValues(ElementsAre(AnyOf(
ValueWithStr(Eq("-nan")), ValueWithStr(Eq("nan")),
ValueWithStr(Eq("-nan(ind)")))))))));
#endif
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
template <typename T>
class VoidPtrLogFormatTest : public testing::Test {};
using VoidPtrTypes = Types<void *, const void *>;
TYPED_TEST_SUITE(VoidPtrLogFormatTest, VoidPtrTypes);
TYPED_TEST(VoidPtrLogFormatTest, Null) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = nullptr;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("(nil)"), Eq("0"), Eq("0x0"),
Eq("00000000"), Eq("0000000000000000"))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(VoidPtrLogFormatTest, NonNull) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = reinterpret_cast<TypeParam>(0xdeadbeefULL);
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("0xdeadbeef"), Eq("DEADBEEF"),
Eq("00000000DEADBEEF"))),
ENCODED_MESSAGE(HasValues(ElementsAre(
AnyOf(ValueWithStr(Eq("0xdeadbeef")),
ValueWithStr(Eq("00000000DEADBEEF")))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
template <typename T>
class VolatilePtrLogFormatTest : public testing::Test {};
using VolatilePtrTypes =
Types<volatile void*, const volatile void*, volatile char*,
const volatile char*, volatile signed char*,
const volatile signed char*, volatile unsigned char*,
const volatile unsigned char*>;
TYPED_TEST_SUITE(VolatilePtrLogFormatTest, VolatilePtrTypes);
TYPED_TEST(VolatilePtrLogFormatTest, Null) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = nullptr;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
// https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p1147r1.html
#if ABSL_INTERNAL_CPLUSPLUS_LANG >= 202302L
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("(nil)"), Eq("0"), Eq("0x0"),
Eq("00000000"), Eq("0000000000000000"))))));
#else
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("false")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("false"))))))));
#endif
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(VolatilePtrLogFormatTest, NonNull) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const TypeParam value = reinterpret_cast<TypeParam>(0xdeadbeefLL);
auto comparison_stream = ComparisonStream();
comparison_stream << value;
// https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p1147r1.html
#if ABSL_INTERNAL_CPLUSPLUS_LANG >= 202302L
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("0xdeadbeef"), Eq("DEADBEEF"),
Eq("00000000DEADBEEF"))),
ENCODED_MESSAGE(HasValues(ElementsAre(
AnyOf(ValueWithStr(Eq("0xdeadbeef")),
ValueWithStr(Eq("00000000DEADBEEF")))))))));
#else
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("true")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("true"))))))));
#endif
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
template <typename T>
class CharPtrLogFormatTest : public testing::Test {};
using CharPtrTypes = Types<char, const char, signed char, const signed char,
unsigned char, const unsigned char>;
TYPED_TEST_SUITE(CharPtrLogFormatTest, CharPtrTypes);
TYPED_TEST(CharPtrLogFormatTest, Null) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
// Streaming `([cv] char *)nullptr` into a `std::ostream` is UB, and some C++
// standard library implementations choose to crash. We take measures to log
// something useful instead of crashing, even when that differs from the
// standard library in use (and thus the behavior of `std::ostream`).
TypeParam* const value = nullptr;
EXPECT_CALL(
test_sink,
Send(AllOf(
// `MatchesOstream` deliberately omitted since we deliberately differ.
TextMessage(Eq("(null)")), ENCODED_MESSAGE(HasValues(ElementsAre(
ValueWithStr(Eq("(null)"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TYPED_TEST(CharPtrLogFormatTest, NonNull) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
TypeParam data[] = {'v', 'a', 'l', 'u', 'e', '\0'};
TypeParam* const value = data;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("value")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("value"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TEST(BoolLogFormatTest, True) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const bool value = true;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("true")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("true"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TEST(BoolLogFormatTest, False) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const bool value = false;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("false")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("false"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
TEST(LogFormatTest, StringLiteral) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
auto comparison_stream = ComparisonStream();
comparison_stream << "value";
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("value")),
ENCODED_MESSAGE(HasValues(
ElementsAre(ValueWithLiteral(Eq("value"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << "value";
}
TEST(LogFormatTest, CharArray) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
char value[] = "value";
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("value")),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("value"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
class CustomClass {};
std::ostream& operator<<(std::ostream& os, const CustomClass&) {
return os << "CustomClass{}";
}
TEST(LogFormatTest, Custom) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
CustomClass value;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("CustomClass{}")),
ENCODED_MESSAGE(HasValues(ElementsAre(
ValueWithStr(Eq("CustomClass{}"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
class CustomClassNonCopyable {
public:
CustomClassNonCopyable() = default;
CustomClassNonCopyable(const CustomClassNonCopyable&) = delete;
CustomClassNonCopyable& operator=(const CustomClassNonCopyable&) = delete;
};
std::ostream& operator<<(std::ostream& os, const CustomClassNonCopyable&) {
return os << "CustomClassNonCopyable{}";
}
TEST(LogFormatTest, CustomNonCopyable) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
CustomClassNonCopyable value;
auto comparison_stream = ComparisonStream();
comparison_stream << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("CustomClassNonCopyable{}")),
ENCODED_MESSAGE(HasValues(ElementsAre(
ValueWithStr(Eq("CustomClassNonCopyable{}"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << value;
}
struct Point {
template <typename Sink>
friend void AbslStringify(Sink& sink, const Point& p) {
absl::Format(&sink, "(%d, %d)", p.x, p.y);
}
int x = 10;
int y = 20;
};
TEST(LogFormatTest, AbslStringifyExample) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
Point p;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(Eq("(10, 20)")), TextMessage(Eq(absl::StrCat(p))),
ENCODED_MESSAGE(
HasValues(ElementsAre(ValueWithStr(Eq("(10, 20)"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << p;
}
struct PointWithAbslStringifiyAndOstream {
template <typename Sink>
friend void AbslStringify(Sink& sink,
const PointWithAbslStringifiyAndOstream& p) {
absl::Format(&sink, "(%d, %d)", p.x, p.y);
}
int x = 10;
int y = 20;
};
ABSL_ATTRIBUTE_UNUSED std::ostream& operator<<(
std::ostream& os, const PointWithAbslStringifiyAndOstream&) {
return os << "Default to AbslStringify()";
}
TEST(LogFormatTest, CustomWithAbslStringifyAndOstream) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
PointWithAbslStringifiyAndOstream p;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(Eq("(10, 20)")), TextMessage(Eq(absl::StrCat(p))),
ENCODED_MESSAGE(
HasValues(ElementsAre(ValueWithStr(Eq("(10, 20)"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << p;
}
struct PointStreamsNothing {
template <typename Sink>
friend void AbslStringify(Sink&, const PointStreamsNothing&) {}
int x = 10;
int y = 20;
};
TEST(LogFormatTest, AbslStringifyStreamsNothing) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
PointStreamsNothing p;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(Eq("77")), TextMessage(Eq(absl::StrCat(p, 77))),
ENCODED_MESSAGE(HasValues(ElementsAre(ValueWithStr(Eq("77"))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << p << 77;
}
struct PointMultipleAppend {
template <typename Sink>
friend void AbslStringify(Sink& sink, const PointMultipleAppend& p) {
sink.Append("(");
sink.Append(absl::StrCat(p.x, ", ", p.y, ")"));
}
int x = 10;
int y = 20;
};
TEST(LogFormatTest, AbslStringifyMultipleAppend) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
PointMultipleAppend p;
EXPECT_CALL(