Protocol Buffers - Google's data interchange format (grpc依赖) https://developers.google.com/protocol-buffers/
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#include "upb/message/merge.h"
#include <cstdint>
#include <cstring>
#include <gtest/gtest.h>
#include "google/protobuf/test_messages_proto2.upb.h"
#include "google/protobuf/test_messages_proto2.upb_minitable.h"
#include "upb/base/string_view.h"
#include "upb/base/upcast.h"
#include "upb/mem/arena.h"
#include "upb/message/accessors.h"
#include "upb/mini_table/field.h"
#include "upb/mini_table/message.h"
// Must be last.
#include "upb/port/def.inc"
namespace {
// Proto2 test messages field numbers used for reflective access.
const uint32_t kFieldOptionalInt32 = 1;
const uint32_t kFieldOptionalString = 14;
const char kTestStr1[] = "Hello1";
const int32_t kTestInt32 = 567;
const upb_MiniTableField* find_proto2_field(int field_number) {
return upb_MiniTable_FindFieldByNumber(
&protobuf_0test_0messages__proto2__TestAllTypesProto2_msg_init,
field_number);
}
TEST(GeneratedCode, MergeMessageScalarAndString) {
upb_Arena* source_arena = upb_Arena_New();
protobuf_test_messages_proto2_TestAllTypesProto2* msg =
protobuf_test_messages_proto2_TestAllTypesProto2_new(source_arena);
const upb_MiniTableField* optional_int32_field =
find_proto2_field(kFieldOptionalInt32);
const upb_MiniTableField* optional_string_field =
find_proto2_field(kFieldOptionalString);
upb_Message_SetInt32(UPB_UPCAST(msg), optional_int32_field, kTestInt32,
nullptr);
char* string_in_arena =
(char*)upb_Arena_Malloc(source_arena, sizeof(kTestStr1));
memcpy(string_in_arena, kTestStr1, sizeof(kTestStr1));
upb_Message_SetString(
UPB_UPCAST(msg), optional_string_field,
upb_StringView_FromDataAndSize(string_in_arena, sizeof(kTestStr1) - 1),
source_arena);
upb_Arena* arena = upb_Arena_New();
protobuf_test_messages_proto2_TestAllTypesProto2* clone =
protobuf_test_messages_proto2_TestAllTypesProto2_new(arena);
EXPECT_TRUE(
(protobuf_test_messages_proto2_TestAllTypesProto2*)upb_Message_MergeFrom(
UPB_UPCAST(clone), UPB_UPCAST(msg),
&protobuf_0test_0messages__proto2__TestAllTypesProto2_msg_init,
nullptr, arena));
// After cloning overwrite values and destroy source arena for MSAN.
memset(string_in_arena, 0, sizeof(kTestStr1));
upb_Arena_Free(source_arena);
EXPECT_TRUE(
upb_Message_HasBaseField(UPB_UPCAST(clone), optional_int32_field));
EXPECT_EQ(upb_Message_GetInt32(UPB_UPCAST(clone), optional_int32_field, 0),
kTestInt32);
EXPECT_TRUE(
upb_Message_HasBaseField(UPB_UPCAST(clone), optional_string_field));
EXPECT_EQ(upb_Message_GetString(UPB_UPCAST(clone), optional_string_field,
upb_StringView_FromDataAndSize(nullptr, 0))
.size,
sizeof(kTestStr1) - 1);
EXPECT_TRUE(upb_StringView_IsEqual(
upb_Message_GetString(UPB_UPCAST(clone), optional_string_field,
upb_StringView_FromDataAndSize(nullptr, 0)),
upb_StringView_FromString(kTestStr1)));
upb_Arena_Free(arena);
}
} // namespace