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abseil-cpp/absl/log/log_entry_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 "absl/log/log_entry.h"
#include <stddef.h>
#include <stdint.h>
#include <cstring>
#include <limits>
#include <string>
#include <type_traits>
#include <utility>
#include <vector>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/base/attributes.h"
#include "absl/base/config.h"
#include "absl/base/log_severity.h"
#include "absl/log/internal/log_format.h"
#include "absl/log/internal/test_helpers.h"
#include "absl/strings/numbers.h"
#include "absl/strings/str_split.h"
#include "absl/strings/string_view.h"
#include "absl/time/civil_time.h"
#include "absl/time/time.h"
#include "absl/types/span.h"
namespace {
using ::absl::log_internal::LogEntryTestPeer;
using ::testing::Eq;
using ::testing::IsTrue;
using ::testing::StartsWith;
using ::testing::StrEq;
auto* test_env ABSL_ATTRIBUTE_UNUSED = ::testing::AddGlobalTestEnvironment(
new absl::log_internal::LogTestEnvironment);
// Copies into `dst` as many bytes of `src` as will fit, then truncates the
// copied bytes from the front of `dst` and returns the number of bytes written.
size_t AppendTruncated(absl::string_view src, absl::Span<char>& dst) {
if (src.size() > dst.size()) src = src.substr(0, dst.size());
memcpy(dst.data(), src.data(), src.size());
dst.remove_prefix(src.size());
return src.size();
}
} // namespace
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace log_internal {
class LogEntryTestPeer {
public:
LogEntryTestPeer(absl::string_view base_filename, int line, bool prefix,
absl::LogSeverity severity, absl::string_view timestamp,
absl::LogEntry::tid_t tid, absl::string_view text_message)
: buf_(15000, '\0') {
entry_.base_filename_ = base_filename;
entry_.line_ = line;
entry_.prefix_ = prefix;
entry_.severity_ = severity;
std::string time_err;
EXPECT_THAT(
absl::ParseTime("%Y-%m-%d%ET%H:%M:%E*S", timestamp,
absl::LocalTimeZone(), &entry_.timestamp_, &time_err),
IsTrue())
<< "Failed to parse time " << timestamp << ": " << time_err;
entry_.tid_ = tid;
std::pair<absl::string_view, std::string> timestamp_bits =
absl::StrSplit(timestamp, absl::ByChar('.'));
EXPECT_THAT(absl::ParseCivilTime(timestamp_bits.first, &ci_.cs), IsTrue())
<< "Failed to parse time " << timestamp_bits.first;
timestamp_bits.second.resize(9, '0');
int64_t nanos = 0;
EXPECT_THAT(absl::SimpleAtoi(timestamp_bits.second, &nanos), IsTrue())
<< "Failed to parse time " << timestamp_bits.first;
ci_.subsecond = absl::Nanoseconds(nanos);
absl::Span<char> view = absl::MakeSpan(buf_);
view.remove_suffix(2);
entry_.prefix_len_ =
entry_.prefix_
? log_internal::FormatLogPrefix(
entry_.log_severity(), entry_.timestamp(), entry_.tid(),
entry_.source_basename(), entry_.source_line(), view)
: 0;
EXPECT_THAT(entry_.prefix_len_, Eq(view.data() - buf_.data()));
AppendTruncated(text_message, view);
view = absl::Span<char>(view.data(), view.size() + 2);
view[0] = '\n';
view[1] = '\0';
view.remove_prefix(2);
buf_.resize(view.data() - buf_.data());
entry_.text_message_with_prefix_and_newline_and_nul_ = absl::MakeSpan(buf_);
}
LogEntryTestPeer(const LogEntryTestPeer&) = delete;
LogEntryTestPeer& operator=(const LogEntryTestPeer&) = delete;
std::string FormatLogMessage() const {
return log_internal::FormatLogMessage(
entry_.log_severity(), ci_.cs, ci_.subsecond, entry_.tid(),
entry_.source_basename(), entry_.source_line(), entry_.text_message());
}
std::string FormatPrefixIntoSizedBuffer(size_t sz) {
std::string str(sz, '\0');
absl::Span<char> buf(&str[0], str.size());
const size_t prefix_size = log_internal::FormatLogPrefix(
entry_.log_severity(), entry_.timestamp(), entry_.tid(),
entry_.source_basename(), entry_.source_line(), buf);
EXPECT_THAT(prefix_size, Eq(buf.data() - str.data()));
str.resize(prefix_size);
return str;
}
const absl::LogEntry& entry() const { return entry_; }
private:
absl::LogEntry entry_;
absl::TimeZone::CivilInfo ci_;
std::vector<char> buf_;
};
} // namespace log_internal
ABSL_NAMESPACE_END
} // namespace absl
namespace {
constexpr bool kUsePrefix = true, kNoPrefix = false;
TEST(LogEntryTest, Baseline) {
LogEntryTestPeer entry("foo.cc", 1234, kUsePrefix, absl::LogSeverity::kInfo,
"2020-01-02T03:04:05.6789", 451, "hello world");
EXPECT_THAT(entry.FormatLogMessage(),
Eq("I0102 03:04:05.678900 451 foo.cc:1234] hello world"));
EXPECT_THAT(entry.FormatPrefixIntoSizedBuffer(1000),
Eq("I0102 03:04:05.678900 451 foo.cc:1234] "));
for (size_t sz = strlen("I0102 03:04:05.678900 451 foo.cc:1234] ") + 20;
sz != std::numeric_limits<size_t>::max(); sz--)
EXPECT_THAT("I0102 03:04:05.678900 451 foo.cc:1234] ",
StartsWith(entry.FormatPrefixIntoSizedBuffer(sz)));
EXPECT_THAT(entry.entry().text_message_with_prefix_and_newline(),
Eq("I0102 03:04:05.678900 451 foo.cc:1234] hello world\n"));
EXPECT_THAT(
entry.entry().text_message_with_prefix_and_newline_c_str(),
StrEq("I0102 03:04:05.678900 451 foo.cc:1234] hello world\n"));
EXPECT_THAT(entry.entry().text_message_with_prefix(),
Eq("I0102 03:04:05.678900 451 foo.cc:1234] hello world"));
EXPECT_THAT(entry.entry().text_message(), Eq("hello world"));
}
TEST(LogEntryTest, NoPrefix) {
LogEntryTestPeer entry("foo.cc", 1234, kNoPrefix, absl::LogSeverity::kInfo,
"2020-01-02T03:04:05.6789", 451, "hello world");
EXPECT_THAT(entry.FormatLogMessage(),
Eq("I0102 03:04:05.678900 451 foo.cc:1234] hello world"));
// These methods are not responsible for honoring `prefix()`.
EXPECT_THAT(entry.FormatPrefixIntoSizedBuffer(1000),
Eq("I0102 03:04:05.678900 451 foo.cc:1234] "));
for (size_t sz = strlen("I0102 03:04:05.678900 451 foo.cc:1234] ") + 20;
sz != std::numeric_limits<size_t>::max(); sz--)
EXPECT_THAT("I0102 03:04:05.678900 451 foo.cc:1234] ",
StartsWith(entry.FormatPrefixIntoSizedBuffer(sz)));
EXPECT_THAT(entry.entry().text_message_with_prefix_and_newline(),
Eq("hello world\n"));
EXPECT_THAT(entry.entry().text_message_with_prefix_and_newline_c_str(),
StrEq("hello world\n"));
EXPECT_THAT(entry.entry().text_message_with_prefix(), Eq("hello world"));
EXPECT_THAT(entry.entry().text_message(), Eq("hello world"));
}
TEST(LogEntryTest, EmptyFields) {
LogEntryTestPeer entry("", 0, kUsePrefix, absl::LogSeverity::kInfo,
"2020-01-02T03:04:05", 0, "");
const std::string format_message = entry.FormatLogMessage();
EXPECT_THAT(format_message, Eq("I0102 03:04:05.000000 0 :0] "));
EXPECT_THAT(entry.FormatPrefixIntoSizedBuffer(1000), Eq(format_message));
for (size_t sz = format_message.size() + 20;
sz != std::numeric_limits<size_t>::max(); sz--)
EXPECT_THAT(format_message,
StartsWith(entry.FormatPrefixIntoSizedBuffer(sz)));
EXPECT_THAT(entry.entry().text_message_with_prefix_and_newline(),
Eq("I0102 03:04:05.000000 0 :0] \n"));
EXPECT_THAT(entry.entry().text_message_with_prefix_and_newline_c_str(),
StrEq("I0102 03:04:05.000000 0 :0] \n"));
EXPECT_THAT(entry.entry().text_message_with_prefix(),
Eq("I0102 03:04:05.000000 0 :0] "));
EXPECT_THAT(entry.entry().text_message(), Eq(""));
}
TEST(LogEntryTest, NegativeFields) {
if (std::is_signed<absl::LogEntry::tid_t>::value) {
LogEntryTestPeer entry("foo.cc", -1234, kUsePrefix,
absl::LogSeverity::kInfo, "2020-01-02T03:04:05.6789",
-451, "hello world");
EXPECT_THAT(entry.FormatLogMessage(),
Eq("I0102 03:04:05.678900 -451 foo.cc:-1234] hello world"));
EXPECT_THAT(entry.FormatPrefixIntoSizedBuffer(1000),
Eq("I0102 03:04:05.678900 -451 foo.cc:-1234] "));
for (size_t sz =
strlen("I0102 03:04:05.678900 -451 foo.cc:-1234] ") + 20;
sz != std::numeric_limits<size_t>::max(); sz--)
EXPECT_THAT("I0102 03:04:05.678900 -451 foo.cc:-1234] ",
StartsWith(entry.FormatPrefixIntoSizedBuffer(sz)));
EXPECT_THAT(
entry.entry().text_message_with_prefix_and_newline(),
Eq("I0102 03:04:05.678900 -451 foo.cc:-1234] hello world\n"));
EXPECT_THAT(
entry.entry().text_message_with_prefix_and_newline_c_str(),
StrEq("I0102 03:04:05.678900 -451 foo.cc:-1234] hello world\n"));
EXPECT_THAT(entry.entry().text_message_with_prefix(),
Eq("I0102 03:04:05.678900 -451 foo.cc:-1234] hello world"));
EXPECT_THAT(entry.entry().text_message(), Eq("hello world"));
} else {
LogEntryTestPeer entry("foo.cc", -1234, kUsePrefix,
absl::LogSeverity::kInfo, "2020-01-02T03:04:05.6789",
451, "hello world");
EXPECT_THAT(entry.FormatLogMessage(),
Eq("I0102 03:04:05.678900 451 foo.cc:-1234] hello world"));
EXPECT_THAT(entry.FormatPrefixIntoSizedBuffer(1000),
Eq("I0102 03:04:05.678900 451 foo.cc:-1234] "));
for (size_t sz =
strlen("I0102 03:04:05.678900 451 foo.cc:-1234] ") + 20;
sz != std::numeric_limits<size_t>::max(); sz--)
EXPECT_THAT("I0102 03:04:05.678900 451 foo.cc:-1234] ",
StartsWith(entry.FormatPrefixIntoSizedBuffer(sz)));
EXPECT_THAT(
entry.entry().text_message_with_prefix_and_newline(),
Eq("I0102 03:04:05.678900 451 foo.cc:-1234] hello world\n"));
EXPECT_THAT(
entry.entry().text_message_with_prefix_and_newline_c_str(),
StrEq("I0102 03:04:05.678900 451 foo.cc:-1234] hello world\n"));
EXPECT_THAT(entry.entry().text_message_with_prefix(),
Eq("I0102 03:04:05.678900 451 foo.cc:-1234] hello world"));
EXPECT_THAT(entry.entry().text_message(), Eq("hello world"));
}
}
TEST(LogEntryTest, LongFields) {
LogEntryTestPeer entry(
"I am the very model of a modern Major-General / "
"I've information vegetable, animal, and mineral.",
2147483647, kUsePrefix, absl::LogSeverity::kInfo,
"2020-01-02T03:04:05.678967896789", 2147483647,
"I know the kings of England, and I quote the fights historical / "
"From Marathon to Waterloo, in order categorical.");
EXPECT_THAT(entry.FormatLogMessage(),
Eq("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical."));
EXPECT_THAT(entry.FormatPrefixIntoSizedBuffer(1000),
Eq("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:2147483647] "));
for (size_t sz =
strlen("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:2147483647] ") +
20;
sz != std::numeric_limits<size_t>::max(); sz--)
EXPECT_THAT(
"I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:2147483647] ",
StartsWith(entry.FormatPrefixIntoSizedBuffer(sz)));
EXPECT_THAT(entry.entry().text_message_with_prefix_and_newline(),
Eq("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical.\n"));
EXPECT_THAT(
entry.entry().text_message_with_prefix_and_newline_c_str(),
StrEq("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical.\n"));
EXPECT_THAT(entry.entry().text_message_with_prefix(),
Eq("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical."));
EXPECT_THAT(
entry.entry().text_message(),
Eq("I know the kings of England, and I quote the fights historical / "
"From Marathon to Waterloo, in order categorical."));
}
TEST(LogEntryTest, LongNegativeFields) {
if (std::is_signed<absl::LogEntry::tid_t>::value) {
LogEntryTestPeer entry(
"I am the very model of a modern Major-General / "
"I've information vegetable, animal, and mineral.",
-2147483647, kUsePrefix, absl::LogSeverity::kInfo,
"2020-01-02T03:04:05.678967896789", -2147483647,
"I know the kings of England, and I quote the fights historical / "
"From Marathon to Waterloo, in order categorical.");
EXPECT_THAT(
entry.FormatLogMessage(),
Eq("I0102 03:04:05.678967 -2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical."));
EXPECT_THAT(entry.FormatPrefixIntoSizedBuffer(1000),
Eq("I0102 03:04:05.678967 -2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] "));
for (size_t sz =
strlen(
"I0102 03:04:05.678967 -2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] ") +
20;
sz != std::numeric_limits<size_t>::max(); sz--)
EXPECT_THAT(
"I0102 03:04:05.678967 -2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] ",
StartsWith(entry.FormatPrefixIntoSizedBuffer(sz)));
EXPECT_THAT(
entry.entry().text_message_with_prefix_and_newline(),
Eq("I0102 03:04:05.678967 -2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical.\n"));
EXPECT_THAT(
entry.entry().text_message_with_prefix_and_newline_c_str(),
StrEq("I0102 03:04:05.678967 -2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical.\n"));
EXPECT_THAT(
entry.entry().text_message_with_prefix(),
Eq("I0102 03:04:05.678967 -2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical."));
EXPECT_THAT(
entry.entry().text_message(),
Eq("I know the kings of England, and I quote the fights historical / "
"From Marathon to Waterloo, in order categorical."));
} else {
LogEntryTestPeer entry(
"I am the very model of a modern Major-General / "
"I've information vegetable, animal, and mineral.",
-2147483647, kUsePrefix, absl::LogSeverity::kInfo,
"2020-01-02T03:04:05.678967896789", 2147483647,
"I know the kings of England, and I quote the fights historical / "
"From Marathon to Waterloo, in order categorical.");
EXPECT_THAT(
entry.FormatLogMessage(),
Eq("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical."));
EXPECT_THAT(entry.FormatPrefixIntoSizedBuffer(1000),
Eq("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] "));
for (size_t sz =
strlen(
"I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] ") +
20;
sz != std::numeric_limits<size_t>::max(); sz--)
EXPECT_THAT(
"I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] ",
StartsWith(entry.FormatPrefixIntoSizedBuffer(sz)));
EXPECT_THAT(
entry.entry().text_message_with_prefix_and_newline(),
Eq("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical.\n"));
EXPECT_THAT(
entry.entry().text_message_with_prefix_and_newline_c_str(),
StrEq("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical.\n"));
EXPECT_THAT(
entry.entry().text_message_with_prefix(),
Eq("I0102 03:04:05.678967 2147483647 I am the very model of a "
"modern Major-General / I've information vegetable, animal, "
"and mineral.:-2147483647] I know the kings of England, and I "
"quote the fights historical / From Marathon to Waterloo, in "
"order categorical."));
EXPECT_THAT(
entry.entry().text_message(),
Eq("I know the kings of England, and I quote the fights historical / "
"From Marathon to Waterloo, in order categorical."));
}
}
} // namespace