text: /*
   * Copyright (C) 2019 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 "test/gtest_and_gmock.h"
  
  // Autogenerated headers in out/*/gen/
  #include "src/protozero/test/example_proto/library.gen.h"
  #include "src/protozero/test/example_proto/test_messages.gen.h"
  #include "src/protozero/test/example_proto/test_messages.pb.h"
  
  // Generated by the cppgen compiler.
  namespace pbtest = protozero::test::protos::gen;
  
  // Generated by the official protobuf compiler.
  namespace pbgold = protozero::test::protos;
  
  namespace protozero {
  namespace {
  
  using testing::ElementsAreArray;
  
  // The two functions below are templated because they are re-used both on the
  // libprotobuf and protozero versions to check both libproto -> zero and
  // zero -> libproto compatibility.
  template <typename T>
  void SetTestingFields(T* msg) {
    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(decltype(msg->small_enum())::TO_BE);
    msg->set_signed_enum(decltype(msg->signed_enum())::NEGATIVE);
    msg->set_big_enum(decltype(msg->big_enum())::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);
  }
  
  template <typename T>
  void CheckTestingFields(const T& msg) {
    EXPECT_EQ(-1, msg.field_int32());
    EXPECT_EQ(-333123456789ll, msg.field_int64());
    EXPECT_EQ(600u, msg.field_uint32());
    EXPECT_EQ(333123456789ull, msg.field_uint64());
    EXPECT_EQ(-5, msg.field_sint32());
    EXPECT_EQ(-9000, msg.field_sint64());
    EXPECT_EQ(12345u, msg.field_fixed32());
    EXPECT_EQ(444123450000ull, msg.field_fixed64());
    EXPECT_EQ(-69999, msg.field_sfixed32());
    EXPECT_EQ(-200, msg.field_sfixed64());
    EXPECT_FLOAT_EQ(3.14f, msg.field_float());
    EXPECT_DOUBLE_EQ(0.5555, msg.field_double());
    EXPECT_EQ(true, msg.field_bool());
    EXPECT_EQ(decltype(msg.small_enum())::TO_BE, msg.small_enum());
    EXPECT_EQ(decltype(msg.signed_enum())::NEGATIVE, msg.signed_enum());
    EXPECT_EQ(decltype(msg.big_enum())::BEGIN, msg.big_enum());
    EXPECT_EQ("FizzBuzz", msg.field_string());
    EXPECT_EQ(std::string("\x11\x00\xBE\xEF", 4), msg.field_bytes());
    ASSERT_THAT(msg.repeated_int32(), ElementsAreArray({1, -1, 100, 2000000}));
  }
  
  TEST(ProtoCppConformanceTest, GenEncode_GoldDecode) {
    pbtest::EveryField msg;
    SetTestingFields(&msg);
    std::string serialized = msg.SerializeAsString();
  
    pbgold::EveryField gold_msg;
    gold_msg.ParseFromString(serialized);
    CheckTestingFields(gold_msg);
    EXPECT_EQ(serialized.size(), static_cast<size_t>(gold_msg.ByteSize()));
  }
  
  TEST(ProtoCppConformanceTest, GoldEncode_GenDecode) {
    pbgold::EveryField gold_msg;
    SetTestingFields(&gold_msg);
    std::string serialized = gold_msg.SerializeAsString();
  
    pbtest::EveryField msg;
    EXPECT_TRUE(msg.ParseFromString(serialized));
    CheckTestingFields(msg);
  }
  
  TEST(ProtoCppConformanceTest, GenEncode_GenDecode) {
    pbtest::EveryField msg;
    SetTestingFields(&msg);
    std::string serialized = msg.SerializeAsString();
  
    pbtest::EveryField dec_msg;
    dec_msg.ParseFromString(serialized);
    CheckTestingFields(dec_msg);
    EXPECT_EQ(serialized.size(), dec_msg.SerializeAsString().size());
  }
  
  TEST(ProtoCppConformanceTest, NestedMessages) {
    pbtest::NestedA msg_a;
    pbtest::NestedA::NestedB* msg_b = msg_a.add_repeated_a();
    pbtest::NestedA::NestedB::NestedC* msg_c = msg_b->mutable_value_b();
    msg_c->set_value_c(321);
    msg_b = msg_a.add_repeated_a();
    msg_a.mutable_super_nested()->set_value_c(1000);
    std::string serialized = msg_a.SerializeAsString();
  
    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(gold_msg_a.repeated_a(1).value_b().value_c(), 0);
    EXPECT_EQ(1000, gold_msg_a.super_nested().value_c());
  }
  
  // Tests that unknown fields are preserved when re-serializing. This test uses
  // the messages NestedA and NestedA_V2, where NestedA_V2 mimics a future
  // extension of NestedA. It starts filling the V2 version, than decodes it with
  // V1, then re-encodes V1 and decodes with V2 and finally check that all the V2
  // original fields have been preserved.
  TEST(ProtoCppConformanceTest, PreserveUnknownFields) {
    std::string serialized;
    {
      pbtest::TestVersioning_V2 msg_v2;
      msg_v2.set_root_int(10);
      msg_v2.set_root_int_v2(11);
      msg_v2.add_enumz(pbtest::TestVersioning_V2::ONE);
      msg_v2.add_enumz(pbtest::TestVersioning_V2::TWO);
      msg_v2.add_enumz(pbtest::TestVersioning_V2::THREE_V2);
      msg_v2.set_root_string("root-string");
      msg_v2.add_rep_string("root-rep-string-1");
      msg_v2.add_rep_string("root-rep-string-2");
      for (int i = 0; i < 3; i++) {
        auto* sub1 = i == 0 ? msg_v2.mutable_sub1() : msg_v2.add_sub1_rep();
        sub1->set_sub1_int(12);
        sub1->set_sub1_string("sub1-string");
        sub1->set_sub1_int_v2(13);
        sub1->set_sub1_string_v2("sub1-string-v2");
  
        auto* sub2 = i == 0 ? msg_v2.mutable_sub2() : msg_v2.add_sub2_rep();
        sub2->set_sub2_int(14);
        sub2->set_sub2_string("sub2-string");
      }
      {
        pbtest::TestVersioning_V2::Sub1_V2 lazy;
        lazy.set_sub1_int(15);
        lazy.set_sub1_string("sub1-lazy-string");
        lazy.set_sub1_int_v2(16);
        lazy.set_sub1_string_v2("sub1-lazy-string-v2");
        msg_v2.set_sub1_lazy_raw(lazy.SerializeAsString());
      }
      {
        pbtest::TestVersioning_V2::Sub2_V2 lazy;
        lazy.set_sub2_int(17);
        lazy.set_sub2_string("sub2-v2-lazy-string");
        msg_v2.set_sub2_lazy_raw(lazy.SerializeAsString());
      }
  
      serialized = msg_v2.SerializeAsString();
    }
  
    // Now decode with an earlier version that has less fields. Then re-serialize
    // the v1 message.
    {
      pbtest::TestVersioning_V1 msg_v1;
      EXPECT_TRUE(msg_v1.ParseFromString(serialized));
      EXPECT_EQ(msg_v1.root_int(), 10);
      EXPECT_EQ(msg_v1.enumz_size(), 3);
      // These are to workaround "ODR-usage" rules that would require that the
      // constexpr in the .gen.h file have a matching symbol definition in the .cc
      // file.
      const auto ONE = pbtest::TestVersioning_V1::ONE;
      const auto TWO = pbtest::TestVersioning_V1::TWO;
      EXPECT_EQ(msg_v1.enumz()[0], ONE);
      EXPECT_EQ(msg_v1.enumz()[1], TWO);
      EXPECT_EQ(static_cast<int>(msg_v1.enumz()[2]), 3);
      EXPECT_EQ(msg_v1.root_string(), "root-string");
      EXPECT_EQ(msg_v1.rep_string_size(), 2);
      EXPECT_EQ(msg_v1.rep_string()[0], "root-rep-string-1");
      EXPECT_EQ(msg_v1.rep_string()[1], "root-rep-string-2");
      EXPECT_EQ(msg_v1.sub1_rep_size(), 2);
      for (size_t i = 0; i < 3; i++) {
        auto* sub1 = i == 0 ? &msg_v1.sub1() : &msg_v1.sub1_rep()[i - 1];
        EXPECT_EQ(sub1->sub1_int(), 12);
        EXPECT_EQ(sub1->sub1_string(), "sub1-string");
      }
  
      // Append an extra field and change the valaue of an existing one before
      // re-serializing.
      msg_v1.set_root_int(101);
      msg_v1.add_rep_string("extra-string");
      serialized = msg_v1.SerializeAsString();
    }
  
    // Decode the re-serialized v1 message with with v2. Check that the _v2
    // fields have been preserved in the double de/serializataion across versions.
    {
      pbtest::TestVersioning_V2 msg_v2;
      EXPECT_TRUE(msg_v2.ParseFromString(serialized));
      EXPECT_EQ(msg_v2.root_int(), 101);
      EXPECT_EQ(msg_v2.root_int_v2(), 11);
      EXPECT_EQ(msg_v2.enumz_size(), 3);
      const auto ONE = pbtest::TestVersioning_V2::ONE;
      const auto TWO = pbtest::TestVersioning_V2::TWO;
      const auto THREE_V2 = pbtest::TestVersioning_V2::THREE_V2;
      EXPECT_EQ(msg_v2.enumz()[0], ONE);
      EXPECT_EQ(msg_v2.enumz()[1], TWO);
      EXPECT_EQ(msg_v2.enumz()[2], THREE_V2);
      EXPECT_EQ(msg_v2.root_string(), "root-string");
      EXPECT_EQ(msg_v2.rep_string_size(), 3);
      EXPECT_EQ(msg_v2.rep_string()[0], "root-rep-string-1");
      EXPECT_EQ(msg_v2.rep_string()[1], "root-rep-string-2");
      EXPECT_EQ(msg_v2.rep_string()[2], "extra-string");
      EXPECT_EQ(msg_v2.sub1_rep_size(), 2);
      for (size_t i = 0; i < 3; i++) {
        auto* sub1 = i == 0 ? &msg_v2.sub1() : &msg_v2.sub1_rep()[i - 1];
        EXPECT_EQ(sub1->sub1_int(), 12);
        EXPECT_EQ(sub1->sub1_string(), "sub1-string");
        EXPECT_EQ(sub1->sub1_int_v2(), 13);
        EXPECT_EQ(sub1->sub1_string_v2(), "sub1-string-v2");
        auto* sub2 = i == 0 ? &msg_v2.sub2() : &msg_v2.sub2_rep()[i - 1];
        EXPECT_EQ(sub2->sub2_int(), 14);
        EXPECT_EQ(sub2->sub2_string(), "sub2-string");
      }
      {
        pbtest::TestVersioning_V2::Sub1_V2 lazy;
        EXPECT_TRUE(lazy.ParseFromString(msg_v2.sub1_lazy_raw()));
        EXPECT_EQ(lazy.sub1_int(), 15);
        EXPECT_EQ(lazy.sub1_string(), "sub1-lazy-string");
        EXPECT_EQ(lazy.sub1_int_v2(), 16);
        EXPECT_EQ(lazy.sub1_string_v2(), "sub1-lazy-string-v2");
      }
      {
        pbtest::TestVersioning_V2::Sub2_V2 lazy;
        EXPECT_TRUE(lazy.ParseFromString(msg_v2.sub2_lazy_raw()));
        EXPECT_EQ(lazy.sub2_int(), 17);
        EXPECT_EQ(lazy.sub2_string(), "sub2-v2-lazy-string");
      }
    }
  }
  
  // Checks that unset fields aren't zero-initialized in the decode -> re-encode
  // process.
  TEST(ProtoCppConformanceTest, DontDefaultInitialize) {
    pbtest::EveryField msg;
    EXPECT_FALSE(msg.has_field_int32());
    msg.set_field_int32(0);
    EXPECT_TRUE(msg.has_field_int32());
  
    EXPECT_FALSE(msg.has_field_float());
    msg.set_field_float(.0f);
    EXPECT_TRUE(msg.has_field_float());
  
    EXPECT_FALSE(msg.has_field_string());
    msg.set_field_string("");
    EXPECT_TRUE(msg.has_field_string());
  
    pbtest::EveryField dec;
    dec.ParseFromString(msg.SerializeAsString());
    std::string reserialized = dec.SerializeAsString();
  
    pbgold::EveryField gold_msg;
    gold_msg.ParseFromString(reserialized);
    EXPECT_TRUE(gold_msg.has_field_int32());
    EXPECT_EQ(gold_msg.field_int32(), 0);
    EXPECT_TRUE(gold_msg.has_field_float());
    EXPECT_FLOAT_EQ(gold_msg.field_float(), .0f);
    EXPECT_TRUE(gold_msg.has_field_string());
    EXPECT_EQ(gold_msg.field_string(), "");
    EXPECT_FALSE(gold_msg.has_field_int64());
    EXPECT_FALSE(gold_msg.has_field_uint64());
    EXPECT_FALSE(gold_msg.has_field_bytes());
  }
  
  // Tests serialization and deserialization of packed encoding fields.
  TEST(ProtoCppConformanceTest, PackedRepeatedFields) {
    std::string serialized;
    {
      pbtest::PackedRepeatedFields msg;
  
      for (int i = -100; i < 100; i++)
        msg.add_field_int32(i);
  
      for (uint32_t i = 100; i < 200; i++)
        msg.add_field_fixed32(i);
  
      for (int64_t i = 5000000000; i < 5000001000; i++)
        msg.add_field_sfixed64(i);
  
      serialized = msg.SerializeAsString();
    }
    {
      pbtest::PackedRepeatedFields msg;
      EXPECT_TRUE(msg.ParseFromString(serialized));
  
      std::vector<int> exp_int32;
      for (int i = -100; i < 100; i++)
        exp_int32.emplace_back(i);
      ASSERT_THAT(msg.field_int32(), ElementsAreArray(exp_int32));
  
      std::vector<uint32_t> exp_fixed32;
      for (uint32_t i = 100; i < 200; i++)
        exp_fixed32.emplace_back(i);
      ASSERT_THAT(msg.field_fixed32(), ElementsAreArray(exp_fixed32));
  
      std::vector<int64_t> exp_sfixed64;
      for (int64_t i = 5000000000; i < 5000001000; i++)
        exp_sfixed64.emplace_back(i);
      ASSERT_THAT(msg.field_sfixed64(), ElementsAreArray(exp_sfixed64));
    }
  }
  }  // namespace
  }  // namespace protozero
  