467 lines
17 KiB
C++
467 lines
17 KiB
C++
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// Copyright 2021 The Abseil Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <cstdint>
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#include <string>
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "absl/base/config.h"
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#include "absl/base/internal/raw_logging.h"
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#include "absl/base/macros.h"
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#include "absl/strings/cord.h"
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#include "absl/strings/cord_test_helpers.h"
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#include "absl/strings/cordz_test_helpers.h"
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#include "absl/strings/internal/cordz_functions.h"
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#include "absl/strings/internal/cordz_info.h"
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#include "absl/strings/internal/cordz_sample_token.h"
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#include "absl/strings/internal/cordz_statistics.h"
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#include "absl/strings/internal/cordz_update_tracker.h"
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#include "absl/strings/str_cat.h"
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#include "absl/strings/string_view.h"
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#ifdef ABSL_INTERNAL_CORDZ_ENABLED
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using testing::Eq;
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using testing::AnyOf;
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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using cord_internal::CordzInfo;
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using cord_internal::CordzSampleToken;
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using cord_internal::CordzStatistics;
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using cord_internal::CordzUpdateTracker;
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using Method = CordzUpdateTracker::MethodIdentifier;
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// Do not print cord contents, we only care about 'size' perhaps.
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// Note that this method must be inside the named namespace.
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inline void PrintTo(const Cord& cord, std::ostream* s) {
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if (s) *s << "Cord[" << cord.size() << "]";
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}
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namespace {
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auto constexpr kMaxInline = cord_internal::kMaxInline;
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// Returns a string_view value of the specified length
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// We do this to avoid 'consuming' large strings in Cord by default.
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absl::string_view MakeString(size_t size) {
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thread_local std::string str;
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str = std::string(size, '.');
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return str;
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}
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absl::string_view MakeString(TestCordSize size) {
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return MakeString(Length(size));
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}
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// Returns a cord with a sampled method of kAppendString.
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absl::Cord MakeAppendStringCord(TestCordSize size) {
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CordzSamplingIntervalHelper always(1);
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absl::Cord cord;
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cord.Append(MakeString(size));
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return cord;
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}
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std::string TestParamToString(::testing::TestParamInfo<TestCordSize> size) {
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return absl::StrCat("On", ToString(size.param), "Cord");
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}
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class CordzUpdateTest : public testing::TestWithParam<TestCordSize> {
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public:
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Cord& cord() { return cord_; }
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Method InitialOr(Method method) const {
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return (GetParam() > TestCordSize::kInlined) ? Method::kConstructorString
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: method;
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}
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private:
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CordzSamplingIntervalHelper sample_every_{1};
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Cord cord_{MakeString(GetParam())};
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};
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template <typename T>
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std::string ParamToString(::testing::TestParamInfo<T> param) {
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return std::string(ToString(param.param));
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}
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INSTANTIATE_TEST_SUITE_P(WithParam, CordzUpdateTest,
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testing::Values(TestCordSize::kEmpty,
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TestCordSize::kInlined,
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TestCordSize::kLarge),
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TestParamToString);
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class CordzStringTest : public testing::TestWithParam<TestCordSize> {
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private:
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CordzSamplingIntervalHelper sample_every_{1};
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};
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INSTANTIATE_TEST_SUITE_P(WithParam, CordzStringTest,
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testing::Values(TestCordSize::kInlined,
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TestCordSize::kStringSso1,
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TestCordSize::kStringSso2,
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TestCordSize::kSmall,
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TestCordSize::kLarge),
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ParamToString<TestCordSize>);
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TEST(CordzTest, ConstructSmallArray) {
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CordzSamplingIntervalHelper sample_every{1};
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Cord cord(MakeString(TestCordSize::kSmall));
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EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
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}
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TEST(CordzTest, ConstructLargeArray) {
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CordzSamplingIntervalHelper sample_every{1};
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Cord cord(MakeString(TestCordSize::kLarge));
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EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
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}
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TEST_P(CordzStringTest, ConstructString) {
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CordzSamplingIntervalHelper sample_every{1};
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Cord cord(std::string(Length(GetParam()), '.'));
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if (Length(GetParam()) > kMaxInline) {
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EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
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}
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}
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TEST(CordzTest, CopyConstructFromUnsampled) {
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CordzSamplingIntervalHelper sample_every{1};
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Cord src = UnsampledCord(MakeString(TestCordSize::kLarge));
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Cord cord(src);
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EXPECT_THAT(GetCordzInfoForTesting(cord), Eq(nullptr));
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}
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TEST(CordzTest, CopyConstructFromSampled) {
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CordzSamplingIntervalHelper sample_never{99999};
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Cord src = MakeAppendStringCord(TestCordSize::kLarge);
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Cord cord(src);
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ASSERT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorCord));
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CordzStatistics stats = GetCordzInfoForTesting(cord)->GetCordzStatistics();
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EXPECT_THAT(stats.parent_method, Eq(Method::kAppendString));
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EXPECT_THAT(stats.update_tracker.Value(Method::kAppendString), Eq(1));
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}
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TEST(CordzTest, MoveConstruct) {
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CordzSamplingIntervalHelper sample_every{1};
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Cord src(MakeString(TestCordSize::kLarge));
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Cord cord(std::move(src));
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EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
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}
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TEST_P(CordzUpdateTest, AssignUnsampledCord) {
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Cord src = UnsampledCord(MakeString(TestCordSize::kLarge));
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const CordzInfo* info = GetCordzInfoForTesting(cord());
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cord() = src;
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EXPECT_THAT(GetCordzInfoForTesting(cord()), Eq(nullptr));
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EXPECT_FALSE(CordzInfoIsListed(info));
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}
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TEST_P(CordzUpdateTest, AssignSampledCord) {
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Cord src = MakeAppendStringCord(TestCordSize::kLarge);
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cord() = src;
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ASSERT_THAT(cord(), HasValidCordzInfoOf(Method::kAssignCord));
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CordzStatistics stats = GetCordzInfoForTesting(cord())->GetCordzStatistics();
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EXPECT_THAT(stats.parent_method, Eq(Method::kAppendString));
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EXPECT_THAT(stats.update_tracker.Value(Method::kAppendString), Eq(1));
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EXPECT_THAT(stats.update_tracker.Value(Method::kConstructorString), Eq(0));
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}
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TEST(CordzUpdateTest, AssignSampledCordToInlined) {
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CordzSamplingIntervalHelper sample_never{99999};
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Cord cord;
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Cord src = MakeAppendStringCord(TestCordSize::kLarge);
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cord = src;
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ASSERT_THAT(cord, HasValidCordzInfoOf(Method::kAssignCord));
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CordzStatistics stats = GetCordzInfoForTesting(cord)->GetCordzStatistics();
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EXPECT_THAT(stats.parent_method, Eq(Method::kAppendString));
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EXPECT_THAT(stats.update_tracker.Value(Method::kAppendString), Eq(1));
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EXPECT_THAT(stats.update_tracker.Value(Method::kConstructorString), Eq(0));
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}
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TEST(CordzUpdateTest, AssignSampledCordToUnsampledCord) {
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CordzSamplingIntervalHelper sample_never{99999};
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Cord cord = UnsampledCord(MakeString(TestCordSize::kLarge));
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Cord src = MakeAppendStringCord(TestCordSize::kLarge);
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cord = src;
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ASSERT_THAT(cord, HasValidCordzInfoOf(Method::kAssignCord));
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CordzStatistics stats = GetCordzInfoForTesting(cord)->GetCordzStatistics();
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EXPECT_THAT(stats.parent_method, Eq(Method::kAppendString));
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EXPECT_THAT(stats.update_tracker.Value(Method::kAppendString), Eq(1));
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EXPECT_THAT(stats.update_tracker.Value(Method::kConstructorString), Eq(0));
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}
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TEST(CordzUpdateTest, AssignUnsampledCordToSampledCordWithoutSampling) {
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CordzSamplingIntervalHelper sample_never{99999};
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Cord cord = MakeAppendStringCord(TestCordSize::kLarge);
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const CordzInfo* info = GetCordzInfoForTesting(cord);
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Cord src = UnsampledCord(MakeString(TestCordSize::kLarge));
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cord = src;
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EXPECT_THAT(GetCordzInfoForTesting(cord), Eq(nullptr));
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EXPECT_FALSE(CordzInfoIsListed(info));
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}
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TEST(CordzUpdateTest, AssignUnsampledCordToSampledCordWithSampling) {
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CordzSamplingIntervalHelper sample_every{1};
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Cord cord = MakeAppendStringCord(TestCordSize::kLarge);
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const CordzInfo* info = GetCordzInfoForTesting(cord);
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Cord src = UnsampledCord(MakeString(TestCordSize::kLarge));
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cord = src;
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EXPECT_THAT(GetCordzInfoForTesting(cord), Eq(nullptr));
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EXPECT_FALSE(CordzInfoIsListed(info));
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}
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TEST(CordzUpdateTest, AssignSampledCordToSampledCord) {
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CordzSamplingIntervalHelper sample_every{1};
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Cord src = MakeAppendStringCord(TestCordSize::kLarge);
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Cord cord(MakeString(TestCordSize::kLarge));
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cord = src;
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ASSERT_THAT(cord, HasValidCordzInfoOf(Method::kAssignCord));
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CordzStatistics stats = GetCordzInfoForTesting(cord)->GetCordzStatistics();
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EXPECT_THAT(stats.parent_method, Eq(Method::kAppendString));
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EXPECT_THAT(stats.update_tracker.Value(Method::kAppendString), Eq(1));
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EXPECT_THAT(stats.update_tracker.Value(Method::kConstructorString), Eq(0));
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}
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TEST(CordzUpdateTest, AssignUnsampledCordToSampledCord) {
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CordzSamplingIntervalHelper sample_every{1};
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Cord src = MakeAppendStringCord(TestCordSize::kLarge);
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Cord cord(MakeString(TestCordSize::kLarge));
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cord = src;
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ASSERT_THAT(cord, HasValidCordzInfoOf(Method::kAssignCord));
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CordzStatistics stats = GetCordzInfoForTesting(cord)->GetCordzStatistics();
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EXPECT_THAT(stats.parent_method, Eq(Method::kAppendString));
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EXPECT_THAT(stats.update_tracker.Value(Method::kAppendString), Eq(1));
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EXPECT_THAT(stats.update_tracker.Value(Method::kConstructorString), Eq(0));
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}
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TEST(CordzTest, AssignInlinedCordToSampledCord) {
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CordzSampleToken token;
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CordzSamplingIntervalHelper sample_every{1};
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Cord cord(MakeString(TestCordSize::kLarge));
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const CordzInfo* info = GetCordzInfoForTesting(cord);
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Cord src = UnsampledCord(MakeString(TestCordSize::kInlined));
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cord = src;
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EXPECT_THAT(GetCordzInfoForTesting(cord), Eq(nullptr));
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EXPECT_FALSE(CordzInfoIsListed(info));
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}
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TEST(CordzUpdateTest, MoveAssignCord) {
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CordzSamplingIntervalHelper sample_every{1};
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Cord cord;
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Cord src(MakeString(TestCordSize::kLarge));
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cord = std::move(src);
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EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
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}
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TEST_P(CordzUpdateTest, AssignLargeArray) {
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cord() = MakeString(TestCordSize::kSmall);
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EXPECT_THAT(cord(), HasValidCordzInfoOf(Method::kAssignString));
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}
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TEST_P(CordzUpdateTest, AssignSmallArray) {
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cord() = MakeString(TestCordSize::kSmall);
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EXPECT_THAT(cord(), HasValidCordzInfoOf(Method::kAssignString));
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}
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TEST_P(CordzUpdateTest, AssignInlinedArray) {
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cord() = MakeString(TestCordSize::kInlined);
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EXPECT_THAT(GetCordzInfoForTesting(cord()), Eq(nullptr));
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}
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TEST_P(CordzStringTest, AssignStringToInlined) {
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Cord cord;
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cord = std::string(Length(GetParam()), '.');
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if (Length(GetParam()) > kMaxInline) {
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EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kAssignString));
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}
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}
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TEST_P(CordzStringTest, AssignStringToCord) {
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Cord cord(MakeString(TestCordSize::kLarge));
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cord = std::string(Length(GetParam()), '.');
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if (Length(GetParam()) > kMaxInline) {
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EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
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EXPECT_THAT(cord, CordzMethodCountEq(Method::kAssignString, 1));
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}
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}
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TEST_P(CordzUpdateTest, AssignInlinedString) {
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cord() = std::string(Length(TestCordSize::kInlined), '.');
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EXPECT_THAT(GetCordzInfoForTesting(cord()), Eq(nullptr));
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}
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TEST_P(CordzUpdateTest, AppendCord) {
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Cord src = UnsampledCord(MakeString(TestCordSize::kLarge));
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cord().Append(src);
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EXPECT_THAT(cord(), HasValidCordzInfoOf(InitialOr(Method::kAppendCord)));
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}
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TEST_P(CordzUpdateTest, MoveAppendCord) {
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cord().Append(UnsampledCord(MakeString(TestCordSize::kLarge)));
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EXPECT_THAT(cord(), HasValidCordzInfoOf(InitialOr(Method::kAppendCord)));
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}
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TEST_P(CordzUpdateTest, AppendSmallArray) {
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cord().Append(MakeString(TestCordSize::kSmall));
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EXPECT_THAT(cord(), HasValidCordzInfoOf(InitialOr(Method::kAppendString)));
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}
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TEST_P(CordzUpdateTest, AppendLargeArray) {
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cord().Append(MakeString(TestCordSize::kLarge));
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EXPECT_THAT(cord(), HasValidCordzInfoOf(InitialOr(Method::kAppendString)));
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}
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TEST_P(CordzStringTest, AppendStringToEmpty) {
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Cord cord;
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cord.Append(std::string(Length(GetParam()), '.'));
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|
|
if (Length(GetParam()) > kMaxInline) {
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kAppendString));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(CordzStringTest, AppendStringToInlined) {
|
||
|
|
Cord cord(MakeString(TestCordSize::kInlined));
|
||
|
|
cord.Append(std::string(Length(GetParam()), '.'));
|
||
|
|
if (Length(TestCordSize::kInlined) + Length(GetParam()) > kMaxInline) {
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kAppendString));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(CordzStringTest, AppendStringToCord) {
|
||
|
|
Cord cord(MakeString(TestCordSize::kLarge));
|
||
|
|
cord.Append(std::string(Length(GetParam()), '.'));
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
|
||
|
|
EXPECT_THAT(cord, CordzMethodCountEq(Method::kAppendString, 1));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST(CordzTest, MakeCordFromExternal) {
|
||
|
|
CordzSamplingIntervalHelper sample_every{1};
|
||
|
|
Cord cord = MakeCordFromExternal("Hello world", [](absl::string_view) {});
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kMakeCordFromExternal));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST(CordzTest, MakeCordFromEmptyExternal) {
|
||
|
|
CordzSamplingIntervalHelper sample_every{1};
|
||
|
|
Cord cord = MakeCordFromExternal({}, [](absl::string_view) {});
|
||
|
|
EXPECT_THAT(GetCordzInfoForTesting(cord), Eq(nullptr));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(CordzUpdateTest, PrependCord) {
|
||
|
|
Cord src = UnsampledCord(MakeString(TestCordSize::kLarge));
|
||
|
|
cord().Prepend(src);
|
||
|
|
EXPECT_THAT(cord(), HasValidCordzInfoOf(InitialOr(Method::kPrependCord)));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(CordzUpdateTest, PrependSmallArray) {
|
||
|
|
cord().Prepend(MakeString(TestCordSize::kSmall));
|
||
|
|
EXPECT_THAT(cord(), HasValidCordzInfoOf(InitialOr(Method::kPrependString)));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(CordzUpdateTest, PrependLargeArray) {
|
||
|
|
cord().Prepend(MakeString(TestCordSize::kLarge));
|
||
|
|
EXPECT_THAT(cord(), HasValidCordzInfoOf(InitialOr(Method::kPrependString)));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(CordzStringTest, PrependStringToEmpty) {
|
||
|
|
Cord cord;
|
||
|
|
cord.Prepend(std::string(Length(GetParam()), '.'));
|
||
|
|
if (Length(GetParam()) > kMaxInline) {
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kPrependString));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(CordzStringTest, PrependStringToInlined) {
|
||
|
|
Cord cord(MakeString(TestCordSize::kInlined));
|
||
|
|
cord.Prepend(std::string(Length(GetParam()), '.'));
|
||
|
|
if (Length(TestCordSize::kInlined) + Length(GetParam()) > kMaxInline) {
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kPrependString));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_P(CordzStringTest, PrependStringToCord) {
|
||
|
|
Cord cord(MakeString(TestCordSize::kLarge));
|
||
|
|
cord.Prepend(std::string(Length(GetParam()), '.'));
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
|
||
|
|
EXPECT_THAT(cord, CordzMethodCountEq(Method::kPrependString, 1));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST(CordzTest, RemovePrefix) {
|
||
|
|
CordzSamplingIntervalHelper sample_every(1);
|
||
|
|
Cord cord(MakeString(TestCordSize::kLarge));
|
||
|
|
|
||
|
|
// Half the cord
|
||
|
|
cord.RemovePrefix(cord.size() / 2);
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
|
||
|
|
EXPECT_THAT(cord, CordzMethodCountEq(Method::kRemovePrefix, 1));
|
||
|
|
|
||
|
|
// TODO(mvels): RemovePrefix does not reset to inlined, except if empty?
|
||
|
|
cord.RemovePrefix(cord.size() - kMaxInline);
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
|
||
|
|
EXPECT_THAT(cord, CordzMethodCountEq(Method::kRemovePrefix, 2));
|
||
|
|
|
||
|
|
cord.RemovePrefix(cord.size());
|
||
|
|
EXPECT_THAT(GetCordzInfoForTesting(cord), Eq(nullptr));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST(CordzTest, RemoveSuffix) {
|
||
|
|
CordzSamplingIntervalHelper sample_every(1);
|
||
|
|
Cord cord(MakeString(TestCordSize::kLarge));
|
||
|
|
|
||
|
|
// Half the cord
|
||
|
|
cord.RemoveSuffix(cord.size() / 2);
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
|
||
|
|
EXPECT_THAT(cord, CordzMethodCountEq(Method::kRemoveSuffix, 1));
|
||
|
|
|
||
|
|
// TODO(mvels): RemoveSuffix does not reset to inlined, except if empty?
|
||
|
|
cord.RemoveSuffix(cord.size() - kMaxInline);
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kConstructorString));
|
||
|
|
EXPECT_THAT(cord, CordzMethodCountEq(Method::kRemoveSuffix, 2));
|
||
|
|
|
||
|
|
cord.RemoveSuffix(cord.size());
|
||
|
|
EXPECT_THAT(GetCordzInfoForTesting(cord), Eq(nullptr));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST(CordzTest, SubCordFromUnsampledCord) {
|
||
|
|
CordzSamplingIntervalHelper sample_every{1};
|
||
|
|
Cord src = UnsampledCord(MakeString(TestCordSize::kLarge));
|
||
|
|
Cord cord = src.Subcord(10, src.size() / 2);
|
||
|
|
EXPECT_THAT(GetCordzInfoForTesting(cord), Eq(nullptr));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST(CordzTest, SubCordFromSampledCord) {
|
||
|
|
CordzSamplingIntervalHelper sample_never{99999};
|
||
|
|
Cord src = MakeAppendStringCord(TestCordSize::kLarge);
|
||
|
|
Cord cord = src.Subcord(10, src.size() / 2);
|
||
|
|
ASSERT_THAT(cord, HasValidCordzInfoOf(Method::kSubCord));
|
||
|
|
CordzStatistics stats = GetCordzInfoForTesting(cord)->GetCordzStatistics();
|
||
|
|
EXPECT_THAT(stats.parent_method, Eq(Method::kAppendString));
|
||
|
|
EXPECT_THAT(stats.update_tracker.Value(Method::kAppendString), Eq(1));
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST(CordzTest, SmallSubCord) {
|
||
|
|
CordzSamplingIntervalHelper sample_never{99999};
|
||
|
|
Cord src = MakeAppendStringCord(TestCordSize::kLarge);
|
||
|
|
Cord cord = src.Subcord(10, kMaxInline + 1);
|
||
|
|
EXPECT_THAT(cord, HasValidCordzInfoOf(Method::kSubCord));
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace
|
||
|
|
|
||
|
|
ABSL_NAMESPACE_END
|
||
|
|
} // namespace absl
|
||
|
|
|
||
|
|
#endif // ABSL_INTERNAL_CORDZ_ENABLED
|