Add edition_message_unittest.

PiperOrigin-RevId: 606717431

src/google/protobuf/BUILD.bazel

@@ -767,6 +767,7 @@ filegroup(
 filegroup(
     name = "test_proto_editions_srcs",
     srcs = [
+        "edition_unittest.proto",
         "map_proto3_unittest.proto",
         "unittest_arena.proto",
         "unittest_drop_unknown_fields.proto",
@@ -1508,6 +1509,37 @@ cc_test(
     ],
 )
 
+cc_test(
+    name = "edition_message_unittest",
+    srcs = [
+        "edition_message_unittest.cc",
+        "message_unittest.inc",
+    ],
+    data = [":testdata"],
+    deps = [
+        ":arena",
+        ":cc_test_protos",
+        ":internal_visibility",
+        ":port",
+        ":protobuf",
+        ":protobuf_lite",
+        ":test_util",
+        ":test_util2",
+        "//src/google/protobuf/io",
+        "//src/google/protobuf/io:io_win32",
+        "//src/google/protobuf/stubs",
+        "//src/google/protobuf/testing",
+        "//src/google/protobuf/testing:file",
+        "//src/google/protobuf/util:differencer",
+        "@com_google_absl//absl/log:absl_check",
+        "@com_google_absl//absl/log:scoped_mock_log",
+        "@com_google_absl//absl/strings",
+        "@com_google_absl//absl/strings:cord",
+        "@com_google_googletest//:gtest",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
 cc_test(
     name = "no_field_presence_test",
     srcs = ["no_field_presence_test.cc"],

src/google/protobuf/edition_message_unittest.cc

@@ -0,0 +1,37 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file or at
+// https://developers.google.com/open-source/licenses/bsd
+//
+// This test is meant to verify the interaction of the most common and
+// representative edition features. Each new edition feature must have its own
+// unit test and we'll selectively accept new features when we believe doing so
+// improves test coverage in a meaningful way.
+//
+// Note that new features that break the backward compatibility poses challenges
+// to shared unit tests infrastructure this test uses. It may force us to split
+// the shared tests. Keep the shared unit tests (message_unittest.inc)
+// representative without sacrificing test coverage.
+
+#include <gtest/gtest.h>
+#include "absl/log/absl_check.h"
+#include "google/protobuf/arena.h"
+#include "google/protobuf/edition_unittest.pb.h"
+#include "google/protobuf/explicitly_constructed.h"
+#include "google/protobuf/has_bits.h"
+#include "google/protobuf/internal_visibility.h"
+#include "google/protobuf/unittest_import.pb.h"
+
+#define MESSAGE_TEST_NAME EditionMessageTest
+#define MESSAGE_FACTORY_TEST_NAME EditionMessageFactoryTest
+#define UNITTEST_PACKAGE_NAME "edition_unittest"
+#define UNITTEST ::edition_unittest
+#define UNITTEST_IMPORT ::protobuf_unittest_import
+
+// Must include after the above macros.
+// clang-format off
+#include "google/protobuf/test_util.inc"
+#include "google/protobuf/message_unittest.inc"
+// clang-format on