third_party/perfetto/src/protozero/test/protozero_conformance_unittest.cc - cobalt - Git at Google

 /*
  * Copyright (C) 2017 The Android Open Source Project
  *
  * 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
  *
  *      http://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 <limits>
 #include <memory>
 #include <vector>

 #include "perfetto/protozero/message_handle.h"
 #include "perfetto/protozero/packed_repeated_fields.h"
 #include "perfetto/protozero/scattered_heap_buffer.h"
 #include "test/gtest_and_gmock.h"

 // Autogenerated headers in out/*/gen/
 #include "src/protozero/test/example_proto/extensions.pb.h"
 #include "src/protozero/test/example_proto/extensions.pbzero.h"
 #include "src/protozero/test/example_proto/library.pbzero.h"
 #include "src/protozero/test/example_proto/test_messages.pb.h"
 #include "src/protozero/test/example_proto/test_messages.pbzero.h"

 // Generated by the protozero plugin.
 namespace pbtest = protozero::test::protos::pbzero;

 // Generated by the official protobuf compiler.
 namespace pbgold = protozero::test::protos;

 namespace protozero {
 namespace {

 constexpr size_t kChunkSize = 42;

 TEST(ProtoZeroConformanceTest, SimpleFieldsNoNesting) {
   HeapBuffered<pbtest::EveryField> msg{kChunkSize, kChunkSize};

   msg->set_field_int32(-1);
   msg->set_field_int64(-333123456789ll);
   msg->set_field_uint32(600);
   msg->set_field_uint64(333123456789ll);
   msg->set_field_sint32(-5);
   msg->set_field_sint64(-9000);
   msg->set_field_fixed32(12345);
   msg->set_field_fixed64(444123450000ll);
   msg->set_field_sfixed32(-69999);
   msg->set_field_sfixed64(-200);
   msg->set_field_float(3.14f);
   msg->set_field_double(0.5555);
   msg->set_field_bool(true);
   msg->set_small_enum(pbtest::SmallEnum::TO_BE);
   msg->set_signed_enum(pbtest::SignedEnum::NEGATIVE);
   msg->set_big_enum(pbtest::BigEnum::BEGIN);
   msg->set_field_string("FizzBuzz");
   msg->set_field_bytes(reinterpret_cast<const uint8_t*>("\x11\x00\xBE\xEF"), 4);
   msg->add_repeated_int32(1);
   msg->add_repeated_int32(-1);
   msg->add_repeated_int32(100);
   msg->add_repeated_int32(2000000);

   std::string serialized = msg.SerializeAsString();
   pbgold::EveryField gold_msg;
   gold_msg.ParseFromString(serialized);

   EXPECT_EQ(-1, gold_msg.field_int32());
   EXPECT_EQ(-333123456789ll, gold_msg.field_int64());
   EXPECT_EQ(600u, gold_msg.field_uint32());
   EXPECT_EQ(333123456789ull, gold_msg.field_uint64());
   EXPECT_EQ(-5, gold_msg.field_sint32());
   EXPECT_EQ(-9000, gold_msg.field_sint64());
   EXPECT_EQ(12345u, gold_msg.field_fixed32());
   EXPECT_EQ(444123450000ull, gold_msg.field_fixed64());
   EXPECT_EQ(-69999, gold_msg.field_sfixed32());
   EXPECT_EQ(-200, gold_msg.field_sfixed64());
   EXPECT_FLOAT_EQ(3.14f, gold_msg.field_float());
   EXPECT_DOUBLE_EQ(0.5555, gold_msg.field_double());
   EXPECT_EQ(true, gold_msg.field_bool());
   EXPECT_EQ(pbgold::SmallEnum::TO_BE, gold_msg.small_enum());
   EXPECT_EQ(pbgold::SignedEnum::NEGATIVE, gold_msg.signed_enum());
   EXPECT_EQ(pbgold::BigEnum::BEGIN, gold_msg.big_enum());
   EXPECT_EQ("FizzBuzz", gold_msg.field_string());
   EXPECT_EQ(std::string("\x11\x00\xBE\xEF", 4), gold_msg.field_bytes());
   EXPECT_EQ(4, gold_msg.repeated_int32_size());
   EXPECT_EQ(1, gold_msg.repeated_int32(0));
   EXPECT_EQ(-1, gold_msg.repeated_int32(1));
   EXPECT_EQ(100, gold_msg.repeated_int32(2));
   EXPECT_EQ(2000000, gold_msg.repeated_int32(3));
   EXPECT_EQ(serialized.size(), static_cast<size_t>(gold_msg.ByteSizeLong()));
 }

 TEST(ProtoZeroConformanceTest, NestedMessages) {
   HeapBuffered<pbtest::NestedA> msg_a{kChunkSize, kChunkSize};

   pbtest::NestedA::NestedB* msg_b = msg_a->add_repeated_a();
   pbtest::NestedA::NestedB::NestedC* msg_c = msg_b->set_value_b();
   msg_c->set_value_c(321);
   msg_b = msg_a->add_repeated_a();
   msg_c = msg_a->set_super_nested();
   msg_c->set_value_c(1000);

   std::string serialized = msg_a.SerializeAsString();
   EXPECT_EQ(serialized.size(), 26u);

   pbgold::NestedA gold_msg_a;
   gold_msg_a.ParseFromString(serialized);
   EXPECT_EQ(2, gold_msg_a.repeated_a_size());
   EXPECT_EQ(321, gold_msg_a.repeated_a(0).value_b().value_c());
   EXPECT_FALSE(gold_msg_a.repeated_a(1).has_value_b());
   EXPECT_EQ(1000, gold_msg_a.super_nested().value_c());
 }

 TEST(ProtoZeroConformanceTest, Extensions) {
   HeapBuffered<pbtest::BrowserExtension> msg_a{kChunkSize, kChunkSize};

   msg_a->set_base_int(4);

   pbtest::SystemA* msg_b = msg_a->set_extension_a();
   msg_b->set_int_a(3);
   msg_b->set_string_a("string a");

   pbtest::SystemB* msg_c = msg_a->set_extension_b();
   msg_c->set_int_b(10);
   msg_c->set_string_b("string b");

   msg_a->set_base_string("base string");

   std::string serialized = msg_a.SerializeAsString();
   pbgold::RealFakeEvent gold_msg_a;
   gold_msg_a.ParseFromString(serialized);

   EXPECT_EQ(gold_msg_a.base_int(), 4u);
   EXPECT_EQ(gold_msg_a.base_string(), "base string");

   pbgold::SystemA gold_msg_b =
       gold_msg_a.GetExtension(pbgold::BrowserExtension::extension_a);
   EXPECT_EQ(gold_msg_b.int_a(), 3u);
   EXPECT_EQ(gold_msg_b.string_a(), "string a");

   pbgold::SystemB gold_msg_c =
       gold_msg_a.GetExtension(pbgold::BrowserExtension::extension_b);
   EXPECT_EQ(gold_msg_c.int_b(), 10u);
   EXPECT_EQ(gold_msg_c.string_b(), "string b");
 }

 TEST(ProtoZeroConformanceTest, Import) {
   // Test the includes for indirect public import: library.pbzero.h ->
   // library_internals/galaxies.pbzero.h -> upper_import.pbzero.h .
   EXPECT_LE(0u, sizeof(pbtest::TrickyPublicImport));
 }

 TEST(ProtoZeroConformanceTest, FieldNumbers) {
   EXPECT_EQ(1, pbtest::CamelCaseFields::kFooBarBazFieldNumber);
   EXPECT_EQ(2, pbtest::CamelCaseFields::kBarBazFieldNumber);
   EXPECT_EQ(3, pbtest::CamelCaseFields::kMooMooFieldNumber);
   EXPECT_EQ(4, pbtest::CamelCaseFields::kURLEncoderFieldNumber);
   EXPECT_EQ(5, pbtest::CamelCaseFields::kXMapFieldNumber);
   EXPECT_EQ(6, pbtest::CamelCaseFields::kUrLENcoDerFieldNumber);
   EXPECT_EQ(7, pbtest::CamelCaseFields::kBigBangFieldNumber);
   EXPECT_EQ(8, pbtest::CamelCaseFields::kU2FieldNumber);
   EXPECT_EQ(9, pbtest::CamelCaseFields::kBangBigFieldNumber);
 }

 TEST(ProtoZeroConformanceTest, PackedRepeatedVarint) {
   int values[] = {42, 255, -1};

   HeapBuffered<pbtest::PackedRepeatedFields> msg{kChunkSize, kChunkSize};
   PackedVarInt buf;
   for (auto v : values)
     buf.Append(v);
   msg->set_field_int32(buf);
   std::string serialized = msg.SerializeAsString();

   // Serialized as a length-delimited field with a payload of
   // concatenated varints. So the size should be:
   // varint(42) -> 1 byte
   // varint(255) -> 2 bytes
   // varint(-1) -> 10 bytes
   // varint(payload length) -> 1 byte
   // field type & id(1) -> 1 byte
   // total: 6 bytes
   EXPECT_EQ(15u, serialized.size());
   EXPECT_EQ(proto_utils::MakeTagLengthDelimited(
                 pbtest::PackedRepeatedFields::kFieldInt32FieldNumber),
             static_cast<uint32_t>(serialized[0]));

   // Correctly parsed by the protobuf library.
   pbgold::PackedRepeatedFields parsed_gold_msg;
   parsed_gold_msg.ParseFromString(serialized);
   ASSERT_THAT(parsed_gold_msg.field_int32(), testing::ElementsAreArray(values));

   // Encoded identically by the protobuf library.
   pbgold::PackedRepeatedFields gold_msg;
   for (auto v : values)
     gold_msg.add_field_int32(v);
   ASSERT_EQ(gold_msg.SerializeAsString(), serialized);
 }

 TEST(ProtoZeroConformanceTest, PackedRepeatedFixed32) {
   uint32_t values[] = {1, 2, 4, 8};

   HeapBuffered<pbtest::PackedRepeatedFields> msg{kChunkSize, kChunkSize};
   PackedFixedSizeInt<uint32_t> buf;
   for (auto v : values)
     buf.Append(v);
   msg->set_field_fixed32(buf);
   std::string serialized = msg.SerializeAsString();

   // 4x4 bytes payload + 1 byte length + 1 byte tag & field
   EXPECT_EQ(18u, serialized.size());
   EXPECT_EQ(proto_utils::MakeTagLengthDelimited(
                 pbtest::PackedRepeatedFields::kFieldFixed32FieldNumber),
             static_cast<uint32_t>(serialized[0]));

   // Correctly parsed by the protobuf library.
   pbgold::PackedRepeatedFields parsed_gold_msg;
   parsed_gold_msg.ParseFromString(serialized);
   ASSERT_THAT(parsed_gold_msg.field_fixed32(),
               testing::ElementsAreArray(values));

   // Encoded identically by the protobuf library.
   pbgold::PackedRepeatedFields gold_msg;
   for (auto v : values)
     gold_msg.add_field_fixed32(v);
   ASSERT_EQ(gold_msg.SerializeAsString(), serialized);
 }

 TEST(ProtoZeroConformanceTest, PackedRepeatedFixed64) {
   int64_t values[] = {1, -2, 4, -8};

   HeapBuffered<pbtest::PackedRepeatedFields> msg{kChunkSize, kChunkSize};
   PackedFixedSizeInt<int64_t> buf;
   for (auto v : values)
     buf.Append(v);
   msg->set_field_sfixed64(buf);
   std::string serialized = msg.SerializeAsString();

   // 4x8 bytes payload + 1 byte length + 1 byte tag & field
   EXPECT_EQ(34u, serialized.size());
   EXPECT_EQ(proto_utils::MakeTagLengthDelimited(
                 pbtest::PackedRepeatedFields::kFieldSfixed64FieldNumber),
             static_cast<uint32_t>(serialized[0]));

   // Correctly parsed by the protobuf library.
   pbgold::PackedRepeatedFields parsed_gold_msg;
   parsed_gold_msg.ParseFromString(serialized);
   ASSERT_THAT(parsed_gold_msg.field_sfixed64(),
               testing::ElementsAreArray(values));

   // Encoded identically by the protobuf library.
   pbgold::PackedRepeatedFields gold_msg;
   for (auto v : values)
     gold_msg.add_field_sfixed64(v);
   ASSERT_EQ(gold_msg.SerializeAsString(), serialized);
 }

 TEST(ProtoZeroConformanceTest, EmptyPackedRepeatedField) {
   HeapBuffered<pbtest::PackedRepeatedFields> msg;
   PackedVarInt buf;
   msg->set_field_int32(buf);
   std::string serialized = msg.SerializeAsString();

   // Encoded as 2 bytes: tag/field, and a length of zero.
   EXPECT_EQ(2u, serialized.size());
   EXPECT_EQ(proto_utils::MakeTagLengthDelimited(
                 pbtest::PackedRepeatedFields::kFieldInt32FieldNumber),
             static_cast<uint32_t>(serialized[0]));
   EXPECT_EQ(0, serialized[1]);

   // Correctly parsed by the protobuf library.
   pbgold::PackedRepeatedFields parsed_gold_msg;
   parsed_gold_msg.ParseFromString(serialized);
   EXPECT_EQ(0, parsed_gold_msg.field_int32_size());
 }

 // Tests that the stack -> heap expansion dosn't lose data.
 TEST(ProtoZeroConformanceTest, PackedRepeatedResize) {
   const int kNumValues = 32768;
   const int64_t kMultiplier = 10000000;
   HeapBuffered<pbtest::PackedRepeatedFields> msg{kChunkSize, kChunkSize};
   PackedFixedSizeInt<int64_t> buf;
   for (int i = 0; i < kNumValues; i++)
     buf.Append(i * kMultiplier);
   msg->set_field_sfixed64(buf);
   std::string serialized = msg.SerializeAsString();

   // Correctly parsed by the protobuf library.
   pbgold::PackedRepeatedFields parsed_gold_msg;
   parsed_gold_msg.ParseFromString(serialized);
   ASSERT_EQ(parsed_gold_msg.field_sfixed64().size(), kNumValues);
   for (int i = 0; i < kNumValues; i++) {
     ASSERT_EQ(parsed_gold_msg.field_sfixed64(i), i * kMultiplier);
   }
 }

 TEST(ProtoZeroConformanceTest, EnumToString) {
   EXPECT_STREQ(protozero::test::protos::pbzero::SmallEnum_Name(
                    protozero::test::protos::pbzero::SmallEnum::TO_BE),
                "TO_BE");
   EXPECT_STREQ(protozero::test::protos::pbzero::EveryField::NestedEnum_Name(
                    protozero::test::protos::pbzero::EveryField::PING),
                "PING");
 }

 }  // namespace
 }  // namespace protozero
	/*
	* Copyright (C) 2017 The Android Open Source Project
	*
	* 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
	*
	* http://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 <limits>
	#include <memory>
	#include <vector>

	#include "perfetto/protozero/message_handle.h"
	#include "perfetto/protozero/packed_repeated_fields.h"
	#include "perfetto/protozero/scattered_heap_buffer.h"
	#include "test/gtest_and_gmock.h"

	// Autogenerated headers in out/*/gen/
	#include "src/protozero/test/example_proto/extensions.pb.h"
	#include "src/protozero/test/example_proto/extensions.pbzero.h"
	#include "src/protozero/test/example_proto/library.pbzero.h"
	#include "src/protozero/test/example_proto/test_messages.pb.h"
	#include "src/protozero/test/example_proto/test_messages.pbzero.h"

	// Generated by the protozero plugin.
	namespace pbtest = protozero::test::protos::pbzero;

	// Generated by the official protobuf compiler.
	namespace pbgold = protozero::test::protos;

	namespace protozero {
	namespace {

	constexpr size_t kChunkSize = 42;

	TEST(ProtoZeroConformanceTest, SimpleFieldsNoNesting) {
	HeapBuffered<pbtest::EveryField> msg{kChunkSize, kChunkSize};

	msg->set_field_int32(-1);
	msg->set_field_int64(-333123456789ll);
	msg->set_field_uint32(600);
	msg->set_field_uint64(333123456789ll);
	msg->set_field_sint32(-5);
	msg->set_field_sint64(-9000);
	msg->set_field_fixed32(12345);
	msg->set_field_fixed64(444123450000ll);
	msg->set_field_sfixed32(-69999);
	msg->set_field_sfixed64(-200);
	msg->set_field_float(3.14f);
	msg->set_field_double(0.5555);
	msg->set_field_bool(true);
	msg->set_small_enum(pbtest::SmallEnum::TO_BE);
	msg->set_signed_enum(pbtest::SignedEnum::NEGATIVE);
	msg->set_big_enum(pbtest::BigEnum::BEGIN);
	msg->set_field_string("FizzBuzz");
	msg->set_field_bytes(reinterpret_cast<const uint8_t*>("\x11\x00\xBE\xEF"), 4);
	msg->add_repeated_int32(1);
	msg->add_repeated_int32(-1);
	msg->add_repeated_int32(100);
	msg->add_repeated_int32(2000000);

	std::string serialized = msg.SerializeAsString();
	pbgold::EveryField gold_msg;
	gold_msg.ParseFromString(serialized);

	EXPECT_EQ(-1, gold_msg.field_int32());
	EXPECT_EQ(-333123456789ll, gold_msg.field_int64());
	EXPECT_EQ(600u, gold_msg.field_uint32());
	EXPECT_EQ(333123456789ull, gold_msg.field_uint64());
	EXPECT_EQ(-5, gold_msg.field_sint32());
	EXPECT_EQ(-9000, gold_msg.field_sint64());
	EXPECT_EQ(12345u, gold_msg.field_fixed32());
	EXPECT_EQ(444123450000ull, gold_msg.field_fixed64());
	EXPECT_EQ(-69999, gold_msg.field_sfixed32());
	EXPECT_EQ(-200, gold_msg.field_sfixed64());
	EXPECT_FLOAT_EQ(3.14f, gold_msg.field_float());
	EXPECT_DOUBLE_EQ(0.5555, gold_msg.field_double());
	EXPECT_EQ(true, gold_msg.field_bool());
	EXPECT_EQ(pbgold::SmallEnum::TO_BE, gold_msg.small_enum());
	EXPECT_EQ(pbgold::SignedEnum::NEGATIVE, gold_msg.signed_enum());
	EXPECT_EQ(pbgold::BigEnum::BEGIN, gold_msg.big_enum());
	EXPECT_EQ("FizzBuzz", gold_msg.field_string());
	EXPECT_EQ(std::string("\x11\x00\xBE\xEF", 4), gold_msg.field_bytes());
	EXPECT_EQ(4, gold_msg.repeated_int32_size());
	EXPECT_EQ(1, gold_msg.repeated_int32(0));
	EXPECT_EQ(-1, gold_msg.repeated_int32(1));
	EXPECT_EQ(100, gold_msg.repeated_int32(2));
	EXPECT_EQ(2000000, gold_msg.repeated_int32(3));
	EXPECT_EQ(serialized.size(), static_cast<size_t>(gold_msg.ByteSizeLong()));
	}

	TEST(ProtoZeroConformanceTest, NestedMessages) {
	HeapBuffered<pbtest::NestedA> msg_a{kChunkSize, kChunkSize};

	pbtest::NestedA::NestedB* msg_b = msg_a->add_repeated_a();
	pbtest::NestedA::NestedB::NestedC* msg_c = msg_b->set_value_b();
	msg_c->set_value_c(321);
	msg_b = msg_a->add_repeated_a();
	msg_c = msg_a->set_super_nested();
	msg_c->set_value_c(1000);

	std::string serialized = msg_a.SerializeAsString();
	EXPECT_EQ(serialized.size(), 26u);

	pbgold::NestedA gold_msg_a;
	gold_msg_a.ParseFromString(serialized);
	EXPECT_EQ(2, gold_msg_a.repeated_a_size());
	EXPECT_EQ(321, gold_msg_a.repeated_a(0).value_b().value_c());
	EXPECT_FALSE(gold_msg_a.repeated_a(1).has_value_b());
	EXPECT_EQ(1000, gold_msg_a.super_nested().value_c());
	}

	TEST(ProtoZeroConformanceTest, Extensions) {
	HeapBuffered<pbtest::BrowserExtension> msg_a{kChunkSize, kChunkSize};

	msg_a->set_base_int(4);

	pbtest::SystemA* msg_b = msg_a->set_extension_a();
	msg_b->set_int_a(3);
	msg_b->set_string_a("string a");

	pbtest::SystemB* msg_c = msg_a->set_extension_b();
	msg_c->set_int_b(10);
	msg_c->set_string_b("string b");

	msg_a->set_base_string("base string");

	std::string serialized = msg_a.SerializeAsString();
	pbgold::RealFakeEvent gold_msg_a;
	gold_msg_a.ParseFromString(serialized);

	EXPECT_EQ(gold_msg_a.base_int(), 4u);
	EXPECT_EQ(gold_msg_a.base_string(), "base string");

	pbgold::SystemA gold_msg_b =
	gold_msg_a.GetExtension(pbgold::BrowserExtension::extension_a);
	EXPECT_EQ(gold_msg_b.int_a(), 3u);
	EXPECT_EQ(gold_msg_b.string_a(), "string a");

	pbgold::SystemB gold_msg_c =
	gold_msg_a.GetExtension(pbgold::BrowserExtension::extension_b);
	EXPECT_EQ(gold_msg_c.int_b(), 10u);
	EXPECT_EQ(gold_msg_c.string_b(), "string b");
	}

	TEST(ProtoZeroConformanceTest, Import) {
	// Test the includes for indirect public import: library.pbzero.h ->
	// library_internals/galaxies.pbzero.h -> upper_import.pbzero.h .
	EXPECT_LE(0u, sizeof(pbtest::TrickyPublicImport));
	}

	TEST(ProtoZeroConformanceTest, FieldNumbers) {
	EXPECT_EQ(1, pbtest::CamelCaseFields::kFooBarBazFieldNumber);
	EXPECT_EQ(2, pbtest::CamelCaseFields::kBarBazFieldNumber);
	EXPECT_EQ(3, pbtest::CamelCaseFields::kMooMooFieldNumber);
	EXPECT_EQ(4, pbtest::CamelCaseFields::kURLEncoderFieldNumber);
	EXPECT_EQ(5, pbtest::CamelCaseFields::kXMapFieldNumber);
	EXPECT_EQ(6, pbtest::CamelCaseFields::kUrLENcoDerFieldNumber);
	EXPECT_EQ(7, pbtest::CamelCaseFields::kBigBangFieldNumber);
	EXPECT_EQ(8, pbtest::CamelCaseFields::kU2FieldNumber);
	EXPECT_EQ(9, pbtest::CamelCaseFields::kBangBigFieldNumber);
	}

	TEST(ProtoZeroConformanceTest, PackedRepeatedVarint) {
	int values[] = {42, 255, -1};

	HeapBuffered<pbtest::PackedRepeatedFields> msg{kChunkSize, kChunkSize};
	PackedVarInt buf;
	for (auto v : values)
	buf.Append(v);
	msg->set_field_int32(buf);
	std::string serialized = msg.SerializeAsString();

	// Serialized as a length-delimited field with a payload of
	// concatenated varints. So the size should be:
	// varint(42) -> 1 byte
	// varint(255) -> 2 bytes
	// varint(-1) -> 10 bytes
	// varint(payload length) -> 1 byte
	// field type & id(1) -> 1 byte
	// total: 6 bytes
	EXPECT_EQ(15u, serialized.size());
	EXPECT_EQ(proto_utils::MakeTagLengthDelimited(
	pbtest::PackedRepeatedFields::kFieldInt32FieldNumber),
	static_cast<uint32_t>(serialized[0]));

	// Correctly parsed by the protobuf library.
	pbgold::PackedRepeatedFields parsed_gold_msg;
	parsed_gold_msg.ParseFromString(serialized);
	ASSERT_THAT(parsed_gold_msg.field_int32(), testing::ElementsAreArray(values));

	// Encoded identically by the protobuf library.
	pbgold::PackedRepeatedFields gold_msg;
	for (auto v : values)
	gold_msg.add_field_int32(v);
	ASSERT_EQ(gold_msg.SerializeAsString(), serialized);
	}

	TEST(ProtoZeroConformanceTest, PackedRepeatedFixed32) {
	uint32_t values[] = {1, 2, 4, 8};

	HeapBuffered<pbtest::PackedRepeatedFields> msg{kChunkSize, kChunkSize};
	PackedFixedSizeInt<uint32_t> buf;
	for (auto v : values)
	buf.Append(v);
	msg->set_field_fixed32(buf);
	std::string serialized = msg.SerializeAsString();

	// 4x4 bytes payload + 1 byte length + 1 byte tag & field
	EXPECT_EQ(18u, serialized.size());
	EXPECT_EQ(proto_utils::MakeTagLengthDelimited(
	pbtest::PackedRepeatedFields::kFieldFixed32FieldNumber),
	static_cast<uint32_t>(serialized[0]));

	// Correctly parsed by the protobuf library.
	pbgold::PackedRepeatedFields parsed_gold_msg;
	parsed_gold_msg.ParseFromString(serialized);
	ASSERT_THAT(parsed_gold_msg.field_fixed32(),
	testing::ElementsAreArray(values));

	// Encoded identically by the protobuf library.
	pbgold::PackedRepeatedFields gold_msg;
	for (auto v : values)
	gold_msg.add_field_fixed32(v);
	ASSERT_EQ(gold_msg.SerializeAsString(), serialized);
	}

	TEST(ProtoZeroConformanceTest, PackedRepeatedFixed64) {
	int64_t values[] = {1, -2, 4, -8};

	HeapBuffered<pbtest::PackedRepeatedFields> msg{kChunkSize, kChunkSize};
	PackedFixedSizeInt<int64_t> buf;
	for (auto v : values)
	buf.Append(v);
	msg->set_field_sfixed64(buf);
	std::string serialized = msg.SerializeAsString();

	// 4x8 bytes payload + 1 byte length + 1 byte tag & field
	EXPECT_EQ(34u, serialized.size());
	EXPECT_EQ(proto_utils::MakeTagLengthDelimited(
	pbtest::PackedRepeatedFields::kFieldSfixed64FieldNumber),
	static_cast<uint32_t>(serialized[0]));

	// Correctly parsed by the protobuf library.
	pbgold::PackedRepeatedFields parsed_gold_msg;
	parsed_gold_msg.ParseFromString(serialized);
	ASSERT_THAT(parsed_gold_msg.field_sfixed64(),
	testing::ElementsAreArray(values));

	// Encoded identically by the protobuf library.
	pbgold::PackedRepeatedFields gold_msg;
	for (auto v : values)
	gold_msg.add_field_sfixed64(v);
	ASSERT_EQ(gold_msg.SerializeAsString(), serialized);
	}

	TEST(ProtoZeroConformanceTest, EmptyPackedRepeatedField) {
	HeapBuffered<pbtest::PackedRepeatedFields> msg;
	PackedVarInt buf;
	msg->set_field_int32(buf);
	std::string serialized = msg.SerializeAsString();

	// Encoded as 2 bytes: tag/field, and a length of zero.
	EXPECT_EQ(2u, serialized.size());
	EXPECT_EQ(proto_utils::MakeTagLengthDelimited(
	pbtest::PackedRepeatedFields::kFieldInt32FieldNumber),
	static_cast<uint32_t>(serialized[0]));
	EXPECT_EQ(0, serialized[1]);

	// Correctly parsed by the protobuf library.
	pbgold::PackedRepeatedFields parsed_gold_msg;
	parsed_gold_msg.ParseFromString(serialized);
	EXPECT_EQ(0, parsed_gold_msg.field_int32_size());
	}

	// Tests that the stack -> heap expansion dosn't lose data.
	TEST(ProtoZeroConformanceTest, PackedRepeatedResize) {
	const int kNumValues = 32768;
	const int64_t kMultiplier = 10000000;
	HeapBuffered<pbtest::PackedRepeatedFields> msg{kChunkSize, kChunkSize};
	PackedFixedSizeInt<int64_t> buf;
	for (int i = 0; i < kNumValues; i++)
	buf.Append(i * kMultiplier);
	msg->set_field_sfixed64(buf);
	std::string serialized = msg.SerializeAsString();

	// Correctly parsed by the protobuf library.
	pbgold::PackedRepeatedFields parsed_gold_msg;
	parsed_gold_msg.ParseFromString(serialized);
	ASSERT_EQ(parsed_gold_msg.field_sfixed64().size(), kNumValues);
	for (int i = 0; i < kNumValues; i++) {
	ASSERT_EQ(parsed_gold_msg.field_sfixed64(i), i * kMultiplier);
	}
	}

	TEST(ProtoZeroConformanceTest, EnumToString) {
	EXPECT_STREQ(protozero::test::protos::pbzero::SmallEnum_Name(
	protozero::test::protos::pbzero::SmallEnum::TO_BE),
	"TO_BE");
	EXPECT_STREQ(protozero::test::protos::pbzero::EveryField::NestedEnum_Name(
	protozero::test::protos::pbzero::EveryField::PING),
	"PING");
	}

	} // namespace
	} // namespace protozero