Source code
Revision control
Copy as Markdown
Other Tools
//
// 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
//
//
// 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(EqualsProto(R"pb()pb")))));
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(EqualsProto(R"pb(value { str: "x" })pb")))));
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(EqualsProto(R"pb(value {
str: "\xee"
})pb")))));
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(EqualsProto(R"pb(value { str: "224" })pb")))));
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(EqualsProto(R"pb(value { str: "42" })pb")))));
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(EqualsProto(R"pb(value { str: "224" })pb")))));
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(EqualsProto(R"pb(value {
str: "-112"
})pb")))));
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(EqualsProto(R"pb(value { str: "21" })pb")))));
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(EqualsProto(R"pb(value { str: "-21" })pb")))));
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(EqualsProto(R"pb(value { str: "224" })pb")))));
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(EqualsProto(R"pb(value { str: "42" })pb")))));
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(EqualsProto(R"pb(value { str: "224" })pb")))));
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(EqualsProto(R"pb(value {
str: "-112"
})pb")))));
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(EqualsProto(R"pb(value { str: "21" })pb")))));
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(EqualsProto(R"pb(value { str: "-21" })pb")))));
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(EqualsProto(R"pb(value {
str: "6.02e+23"
})pb")))));
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(EqualsProto(R"pb(value {
str: "-6.02e+23"
})pb")))));
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(EqualsProto(R"pb(value {
str: "6.02e-23"
})pb")))));
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(EqualsProto(R"pb(value {
str: "6.02e+23"
})pb")))));
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(EqualsProto(R"pb(value {
str: "-6.02e+23"
})pb")))));
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(EqualsProto(R"pb(value {
str: "6.02e-23"
})pb")))));
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(EqualsProto(R"pb(value { str: "0" })pb")))));
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(EqualsProto(R"pb(value { str: "1" })pb")))));
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(EqualsProto(R"pb(value { str: "inf" })pb")))));
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(EqualsProto(R"pb(value {
str: "-inf"
})pb")))));
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(EqualsProto(R"pb(value { str: "nan" })pb")))));
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;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("-nan"), Eq("nan"), Eq("NaN"), Eq("-nan(ind)"))),
ENCODED_MESSAGE(
AnyOf(EqualsProto(R"pb(value { str: "-nan" })pb"),
EqualsProto(R"pb(value { str: "nan" })pb"),
EqualsProto(R"pb(value { str: "-nan(ind)" })pb"))))));
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(AnyOf(
EqualsProto(R"pb(value { str: "0xdeadbeef" })pb"),
EqualsProto(R"pb(value { str: "00000000DEADBEEF" })pb"))))));
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;
EXPECT_CALL(
test_sink, Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("false")),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
str: "false"
})pb")))));
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;
EXPECT_CALL(
test_sink, Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("true")),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
str: "true"
})pb")))));
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(EqualsProto(R"pb(value { str: "(null)" })pb")))));
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(EqualsProto(R"pb(value {
str: "value"
})pb")))));
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(EqualsProto(R"pb(value {
str: "true"
})pb")))));
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(EqualsProto(R"pb(value {
str: "false"
})pb")))));
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(EqualsProto(R"pb(value {
literal: "value"
})pb")))));
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(EqualsProto(R"pb(value {
str: "value"
})pb")))));
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(EqualsProto(R"pb(value {
str: "CustomClass{}"
})pb")))));
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(EqualsProto(
R"pb(value { str: "CustomClassNonCopyable{}" })pb")))));
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(EqualsProto(R"pb(value { str: "(10, 20)" })pb")))));
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(EqualsProto(R"pb(value { str: "(10, 20)" })pb")))));
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(EqualsProto(R"pb(value { str: "77" })pb")))));
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(
test_sink,
Send(AllOf(
TextMessage(Eq("(10, 20)")), TextMessage(Eq(absl::StrCat(p))),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "(" }
value { str: "10, 20)" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << p;
}
TEST(ManipulatorLogFormatTest, BoolAlphaTrue) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const bool value = true;
auto comparison_stream = ComparisonStream();
comparison_stream << std::noboolalpha << value << " " //
<< std::boolalpha << value << " " //
<< std::noboolalpha << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("1 true 1")),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { str: "1" }
value { literal: " " }
value { str: "true" }
value { literal: " " }
value { str: "1" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::noboolalpha << value << " " //
<< std::boolalpha << value << " " //
<< std::noboolalpha << value;
}
TEST(ManipulatorLogFormatTest, BoolAlphaFalse) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const bool value = false;
auto comparison_stream = ComparisonStream();
comparison_stream << std::noboolalpha << value << " " //
<< std::boolalpha << value << " " //
<< std::noboolalpha << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("0 false 0")),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { str: "0" }
value { literal: " " }
value { str: "false" }
value { literal: " " }
value { str: "0" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::noboolalpha << value << " " //
<< std::boolalpha << value << " " //
<< std::noboolalpha << value;
}
TEST(ManipulatorLogFormatTest, ShowPoint) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 77.0;
auto comparison_stream = ComparisonStream();
comparison_stream << std::noshowpoint << value << " " //
<< std::showpoint << value << " " //
<< std::noshowpoint << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("77 77.0000 77")),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "77" }
value { literal: " " }
value { str: "77.0000" }
value { literal: " " }
value { str: "77" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::noshowpoint << value << " " //
<< std::showpoint << value << " " //
<< std::noshowpoint << value;
}
TEST(ManipulatorLogFormatTest, ShowPos) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::noshowpos << value << " " //
<< std::showpos << value << " " //
<< std::noshowpos << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("77 +77 77")),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "77" }
value { literal: " " }
value { str: "+77" }
value { literal: " " }
value { str: "77" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::noshowpos << value << " " //
<< std::showpos << value << " " //
<< std::noshowpos << value;
}
TEST(ManipulatorLogFormatTest, UppercaseFloat) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 7.7e7;
auto comparison_stream = ComparisonStream();
comparison_stream << std::nouppercase << value << " " //
<< std::uppercase << value << " " //
<< std::nouppercase << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("7.7e+07 7.7E+07 7.7e+07")),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { str: "7.7e+07" }
value { literal: " " }
value { str: "7.7E+07" }
value { literal: " " }
value { str: "7.7e+07" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::nouppercase << value << " " //
<< std::uppercase << value << " " //
<< std::nouppercase << value;
}
TEST(ManipulatorLogFormatTest, Hex) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 0x77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::hex << value;
EXPECT_CALL(
test_sink, Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("0x77")),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
str: "0x77"
})pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::hex << value;
}
TEST(ManipulatorLogFormatTest, Oct) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 077;
auto comparison_stream = ComparisonStream();
comparison_stream << std::oct << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("077")),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "077" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::oct << value;
}
TEST(ManipulatorLogFormatTest, Dec) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::hex << std::dec << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("77")),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "77" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::hex << std::dec << value;
}
TEST(ManipulatorLogFormatTest, ShowbaseHex) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 0x77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::hex //
<< std::noshowbase << value << " " //
<< std::showbase << value << " " //
<< std::noshowbase << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("77 0x77 77")),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "77" }
value { literal: " " }
value { str: "0x77" }
value { literal: " " }
value { str: "77" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::hex //
<< std::noshowbase << value << " " //
<< std::showbase << value << " " //
<< std::noshowbase << value;
}
TEST(ManipulatorLogFormatTest, ShowbaseOct) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 077;
auto comparison_stream = ComparisonStream();
comparison_stream << std::oct //
<< std::noshowbase << value << " " //
<< std::showbase << value << " " //
<< std::noshowbase << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("77 077 77")),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "77" }
value { literal: " " }
value { str: "077" }
value { literal: " " }
value { str: "77" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::oct //
<< std::noshowbase << value << " " //
<< std::showbase << value << " " //
<< std::noshowbase << value;
}
TEST(ManipulatorLogFormatTest, UppercaseHex) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 0xbeef;
auto comparison_stream = ComparisonStream();
comparison_stream //
<< std::hex //
<< std::nouppercase << value << " " //
<< std::uppercase << value << " " //
<< std::nouppercase << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("0xbeef 0XBEEF 0xbeef")),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { str: "0xbeef" }
value { literal: " " }
value { str: "0XBEEF" }
value { literal: " " }
value { str: "0xbeef" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::hex //
<< std::nouppercase << value << " " //
<< std::uppercase << value << " " //
<< std::nouppercase << value;
}
TEST(ManipulatorLogFormatTest, FixedFloat) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 7.7e7;
auto comparison_stream = ComparisonStream();
comparison_stream << std::fixed << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("77000000.000000")),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
str: "77000000.000000"
})pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::fixed << value;
}
TEST(ManipulatorLogFormatTest, ScientificFloat) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 7.7e7;
auto comparison_stream = ComparisonStream();
comparison_stream << std::scientific << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("7.700000e+07")),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
str: "7.700000e+07"
})pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::scientific << value;
}
#if defined(__BIONIC__) && (!defined(__ANDROID_API__) || __ANDROID_API__ < 22)
// Bionic doesn't support `%a` until API 22, so this prints 'a' even if the
// C++ standard library implements it correctly (by forwarding to printf).
#elif defined(__GLIBCXX__) && __cplusplus < 201402L
// libstdc++ shipped C++11 support without `std::hexfloat`.
#else
TEST(ManipulatorLogFormatTest, FixedAndScientificFloat) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 7.7e7;
auto comparison_stream = ComparisonStream();
comparison_stream << std::setiosflags(std::ios_base::scientific |
std::ios_base::fixed)
<< value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("0x1.25bb50p+26"), Eq("0x1.25bb5p+26"),
Eq("0x1.25bb500000000p+26"))),
ENCODED_MESSAGE(
AnyOf(EqualsProto(R"pb(value { str: "0x1.25bb5p+26" })pb"),
EqualsProto(R"pb(value {
str: "0x1.25bb500000000p+26"
})pb"))))));
test_sink.StartCapturingLogs();
// This combination should mean the same thing as `std::hexfloat`.
LOG(INFO) << std::setiosflags(std::ios_base::scientific |
std::ios_base::fixed)
<< value;
}
#endif
#if defined(__BIONIC__) && (!defined(__ANDROID_API__) || __ANDROID_API__ < 22)
// Bionic doesn't support `%a` until API 22, so this prints 'a' even if the C++
// standard library supports `std::hexfloat` (by forwarding to printf).
#elif defined(__GLIBCXX__) && __cplusplus < 201402L
// libstdc++ shipped C++11 support without `std::hexfloat`.
#else
TEST(ManipulatorLogFormatTest, HexfloatFloat) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 7.7e7;
auto comparison_stream = ComparisonStream();
comparison_stream << std::hexfloat << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(AnyOf(Eq("0x1.25bb50p+26"), Eq("0x1.25bb5p+26"),
Eq("0x1.25bb500000000p+26"))),
ENCODED_MESSAGE(
AnyOf(EqualsProto(R"pb(value { str: "0x1.25bb5p+26" })pb"),
EqualsProto(R"pb(value {
str: "0x1.25bb500000000p+26"
})pb"))))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::hexfloat << value;
}
#endif
TEST(ManipulatorLogFormatTest, DefaultFloatFloat) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 7.7e7;
auto comparison_stream = ComparisonStream();
comparison_stream << std::hexfloat << std::defaultfloat << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("7.7e+07")),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
str: "7.7e+07"
})pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::hexfloat << std::defaultfloat << value;
}
TEST(ManipulatorLogFormatTest, Ends) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
auto comparison_stream = ComparisonStream();
comparison_stream << std::ends;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq(absl::string_view("\0", 1))),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "\0" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::ends;
}
TEST(ManipulatorLogFormatTest, Endl) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
auto comparison_stream = ComparisonStream();
comparison_stream << std::endl;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("\n")),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "\n" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::endl;
}
TEST(ManipulatorLogFormatTest, SetIosFlags) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 0x77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::resetiosflags(std::ios_base::basefield)
<< std::setiosflags(std::ios_base::hex) << value << " " //
<< std::resetiosflags(std::ios_base::basefield)
<< std::setiosflags(std::ios_base::dec) << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("0x77 119")),
// `std::setiosflags` and `std::resetiosflags` aren't manipulators.
// We're unable to distinguish their return type(s) from arbitrary
// user-defined types and thus don't suppress the empty str value.
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "0x77" }
value { literal: " " }
value { str: "119" }
)pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::resetiosflags(std::ios_base::basefield)
<< std::setiosflags(std::ios_base::hex) << value << " " //
<< std::resetiosflags(std::ios_base::basefield)
<< std::setiosflags(std::ios_base::dec) << value;
}
TEST(ManipulatorLogFormatTest, SetBase) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 0x77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::setbase(16) << value << " " //
<< std::setbase(0) << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("0x77 119")),
// `std::setbase` isn't a manipulator. We're unable to
// distinguish its return type from arbitrary user-defined
// types and thus don't suppress the empty str value.
ENCODED_MESSAGE(EqualsProto(
R"pb(value { str: "0x77" }
value { literal: " " }
value { str: "119" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::setbase(16) << value << " " //
<< std::setbase(0) << value;
}
TEST(ManipulatorLogFormatTest, SetPrecision) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 6.022140857e23;
auto comparison_stream = ComparisonStream();
comparison_stream << std::setprecision(4) << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("6.022e+23")),
// `std::setprecision` isn't a manipulator. We're unable to
// distinguish its return type from arbitrary user-defined
// types and thus don't suppress the empty str value.
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "6.022e+23" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::setprecision(4) << value;
}
TEST(ManipulatorLogFormatTest, SetPrecisionOverflow) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const double value = 6.022140857e23;
auto comparison_stream = ComparisonStream();
comparison_stream << std::setprecision(200) << value;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("602214085700000015187968")),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { str: "602214085700000015187968" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::setprecision(200) << value;
}
TEST(ManipulatorLogFormatTest, SetW) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::setw(8) << value;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq(" 77")),
// `std::setw` isn't a manipulator. We're unable to
// distinguish its return type from arbitrary user-defined
// types and thus don't suppress the empty str value.
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: " 77" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::setw(8) << value;
}
TEST(ManipulatorLogFormatTest, Left) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = -77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::left << std::setw(8) << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("-77 ")),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
str: "-77 "
})pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::left << std::setw(8) << value;
}
TEST(ManipulatorLogFormatTest, Right) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = -77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::right << std::setw(8) << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq(" -77")),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
str: " -77"
})pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::right << std::setw(8) << value;
}
TEST(ManipulatorLogFormatTest, Internal) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = -77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::internal << std::setw(8) << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("- 77")),
ENCODED_MESSAGE(EqualsProto(R"pb(value {
str: "- 77"
})pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::internal << std::setw(8) << value;
}
TEST(ManipulatorLogFormatTest, SetFill) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
const int value = 77;
auto comparison_stream = ComparisonStream();
comparison_stream << std::setfill('0') << std::setw(8) << value;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("00000077")),
// `std::setfill` isn't a manipulator. We're
// unable to distinguish its return
// type from arbitrary user-defined types and
// thus don't suppress the empty str value.
ENCODED_MESSAGE(EqualsProto(R"pb(value {
str: "00000077"
})pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::setfill('0') << std::setw(8) << value;
}
class FromCustomClass {};
std::ostream& operator<<(std::ostream& os, const FromCustomClass&) {
return os << "FromCustomClass{}" << std::hex;
}
TEST(ManipulatorLogFormatTest, FromCustom) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
FromCustomClass value;
auto comparison_stream = ComparisonStream();
comparison_stream << value << " " << 0x77;
EXPECT_CALL(test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("FromCustomClass{} 0x77")),
ENCODED_MESSAGE(EqualsProto(
R"pb(value { str: "FromCustomClass{}" }
value { literal: " " }
value { str: "0x77" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << value << " " << 0x77;
}
class StreamsNothing {};
std::ostream& operator<<(std::ostream& os, const StreamsNothing&) { return os; }
TEST(ManipulatorLogFormatTest, CustomClassStreamsNothing) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
StreamsNothing value;
auto comparison_stream = ComparisonStream();
comparison_stream << value << 77;
EXPECT_CALL(
test_sink,
Send(AllOf(TextMessage(MatchesOstream(comparison_stream)),
TextMessage(Eq("77")),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "77" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << value << 77;
}
struct PointPercentV {
template <typename Sink>
friend void AbslStringify(Sink& sink, const PointPercentV& p) {
absl::Format(&sink, "(%v, %v)", p.x, p.y);
}
int x = 10;
int y = 20;
};
TEST(ManipulatorLogFormatTest, IOManipsDoNotAffectAbslStringify) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
PointPercentV p;
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(Eq("(10, 20)")), TextMessage(Eq(absl::StrCat(p))),
ENCODED_MESSAGE(EqualsProto(R"pb(value { str: "(10, 20)" })pb")))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::hex << p;
}
TEST(StructuredLoggingOverflowTest, TruncatesStrings) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
// This message is too long and should be truncated to some unspecified size
// no greater than the buffer size but not too much less either. It should be
// truncated rather than discarded.
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(AllOf(
SizeIs(AllOf(Ge(absl::log_internal::kLogMessageBufferSize - 256),
Le(absl::log_internal::kLogMessageBufferSize))),
Each(Eq('x')))),
ENCODED_MESSAGE(HasOneStrThat(AllOf(
SizeIs(AllOf(Ge(absl::log_internal::kLogMessageBufferSize - 256),
Le(absl::log_internal::kLogMessageBufferSize))),
Each(Eq('x'))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << std::string(2 * absl::log_internal::kLogMessageBufferSize, 'x');
}
struct StringLike {
absl::string_view data;
};
std::ostream& operator<<(std::ostream& os, StringLike str) {
return os << str.data;
}
TEST(StructuredLoggingOverflowTest, TruncatesInsertionOperators) {
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
// This message is too long and should be truncated to some unspecified size
// no greater than the buffer size but not too much less either. It should be
// truncated rather than discarded.
EXPECT_CALL(
test_sink,
Send(AllOf(
TextMessage(AllOf(
SizeIs(AllOf(Ge(absl::log_internal::kLogMessageBufferSize - 256),
Le(absl::log_internal::kLogMessageBufferSize))),
Each(Eq('x')))),
ENCODED_MESSAGE(HasOneStrThat(AllOf(
SizeIs(AllOf(Ge(absl::log_internal::kLogMessageBufferSize - 256),
Le(absl::log_internal::kLogMessageBufferSize))),
Each(Eq('x'))))))));
test_sink.StartCapturingLogs();
LOG(INFO) << StringLike{
std::string(2 * absl::log_internal::kLogMessageBufferSize, 'x')};
}
// Returns the size of the largest string that will fit in a `LOG` message
// buffer with no prefix.
size_t MaxLogFieldLengthNoPrefix() {
class StringLengthExtractorSink : public absl::LogSink {
public:
void Send(const absl::LogEntry& entry) override {
CHECK(!size_.has_value());
CHECK_EQ(entry.text_message().find_first_not_of('x'),
absl::string_view::npos);
size_.emplace(entry.text_message().size());
}
size_t size() const {
CHECK(size_.has_value());
return *size_;
}
private:
absl::optional<size_t> size_;
} extractor_sink;
LOG(INFO).NoPrefix().ToSinkOnly(&extractor_sink)
<< std::string(2 * absl::log_internal::kLogMessageBufferSize, 'x');
return extractor_sink.size();
}
TEST(StructuredLoggingOverflowTest, TruncatesStringsCleanly) {
const size_t longest_fit = MaxLogFieldLengthNoPrefix();
// To log a second value field, we need four bytes: two tag/type bytes and two
// sizes. To put any data in the field we need a fifth byte.
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrThat(
AllOf(SizeIs(longest_fit), Each(Eq('x'))))),
RawEncodedMessage(AsString(EndsWith("x"))))));
test_sink.StartCapturingLogs();
// x fits exactly, no part of y fits.
LOG(INFO).NoPrefix() << std::string(longest_fit, 'x') << "y";
}
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrThat(
AllOf(SizeIs(longest_fit - 1), Each(Eq('x'))))),
RawEncodedMessage(AsString(EndsWith("x"))))));
test_sink.StartCapturingLogs();
// x fits, one byte from y's header fits but shouldn't be visible.
LOG(INFO).NoPrefix() << std::string(longest_fit - 1, 'x') << "y";
}
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrThat(
AllOf(SizeIs(longest_fit - 2), Each(Eq('x'))))),
RawEncodedMessage(AsString(EndsWith("x"))))));
test_sink.StartCapturingLogs();
// x fits, two bytes from y's header fit but shouldn't be visible.
LOG(INFO).NoPrefix() << std::string(longest_fit - 2, 'x') << "y";
}
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrThat(
AllOf(SizeIs(longest_fit - 3), Each(Eq('x'))))),
RawEncodedMessage(AsString(EndsWith("x"))))));
test_sink.StartCapturingLogs();
// x fits, three bytes from y's header fit but shouldn't be visible.
LOG(INFO).NoPrefix() << std::string(longest_fit - 3, 'x') << "y";
}
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrAndOneLiteralThat(
AllOf(SizeIs(longest_fit - 4), Each(Eq('x'))),
IsEmpty())),
RawEncodedMessage(Not(AsString(EndsWith("x")))))));
test_sink.StartCapturingLogs();
// x fits, all four bytes from y's header fit but no data bytes do, so we
// encode an empty string.
LOG(INFO).NoPrefix() << std::string(longest_fit - 4, 'x') << "y";
}
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(
test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrAndOneLiteralThat(
AllOf(SizeIs(longest_fit - 5), Each(Eq('x'))), Eq("y"))),
RawEncodedMessage(AsString(EndsWith("y"))))));
test_sink.StartCapturingLogs();
// x fits, y fits exactly.
LOG(INFO).NoPrefix() << std::string(longest_fit - 5, 'x') << "y";
}
}
TEST(StructuredLoggingOverflowTest, TruncatesInsertionOperatorsCleanly) {
const size_t longest_fit = MaxLogFieldLengthNoPrefix();
// To log a second value field, we need four bytes: two tag/type bytes and two
// sizes. To put any data in the field we need a fifth byte.
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrThat(
AllOf(SizeIs(longest_fit), Each(Eq('x'))))),
RawEncodedMessage(AsString(EndsWith("x"))))));
test_sink.StartCapturingLogs();
// x fits exactly, no part of y fits.
LOG(INFO).NoPrefix() << std::string(longest_fit, 'x') << StringLike{"y"};
}
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrThat(
AllOf(SizeIs(longest_fit - 1), Each(Eq('x'))))),
RawEncodedMessage(AsString(EndsWith("x"))))));
test_sink.StartCapturingLogs();
// x fits, one byte from y's header fits but shouldn't be visible.
LOG(INFO).NoPrefix() << std::string(longest_fit - 1, 'x')
<< StringLike{"y"};
}
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrThat(
AllOf(SizeIs(longest_fit - 2), Each(Eq('x'))))),
RawEncodedMessage(AsString(EndsWith("x"))))));
test_sink.StartCapturingLogs();
// x fits, two bytes from y's header fit but shouldn't be visible.
LOG(INFO).NoPrefix() << std::string(longest_fit - 2, 'x')
<< StringLike{"y"};
}
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrThat(
AllOf(SizeIs(longest_fit - 3), Each(Eq('x'))))),
RawEncodedMessage(AsString(EndsWith("x"))))));
test_sink.StartCapturingLogs();
// x fits, three bytes from y's header fit but shouldn't be visible.
LOG(INFO).NoPrefix() << std::string(longest_fit - 3, 'x')
<< StringLike{"y"};
}
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(test_sink,
Send(AllOf(ENCODED_MESSAGE(HasOneStrThat(
AllOf(SizeIs(longest_fit - 4), Each(Eq('x'))))),
RawEncodedMessage(AsString(EndsWith("x"))))));
test_sink.StartCapturingLogs();
// x fits, all four bytes from y's header fit but no data bytes do. We
// don't encode an empty string here because every I/O manipulator hits this
// codepath and those shouldn't leave empty strings behind.
LOG(INFO).NoPrefix() << std::string(longest_fit - 4, 'x')
<< StringLike{"y"};
}
{
absl::ScopedMockLog test_sink(absl::MockLogDefault::kDisallowUnexpected);
EXPECT_CALL(
test_sink,
Send(AllOf(ENCODED_MESSAGE(HasTwoStrsThat(
AllOf(SizeIs(longest_fit - 5), Each(Eq('x'))), Eq("y"))),
RawEncodedMessage(AsString(EndsWith("y"))))));
test_sink.StartCapturingLogs();
// x fits, y fits exactly.
LOG(INFO).NoPrefix() << std::string(longest_fit - 5, 'x')
<< StringLike{"y"};
}
}
} // namespace