root/third_party/protobuf/src/google/protobuf/generated_message_reflection_unittest.cc

DEFINITIONS

1. TEST
2. TEST
3. TEST
4. TEST
5. TEST
6. TEST
7. TEST
8. TEST
9. TEST
10. TEST
11. TEST
12. TEST
13. TEST
14. TEST
15. TEST
16. TEST
17. TEST
18. TEST
19. TEST
20. TEST

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// http://code.google.com/p/protobuf/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Author: kenton@google.com (Kenton Varda)
//  Based on original Protocol Buffers design by
//  Sanjay Ghemawat, Jeff Dean, and others.
//
// To test GeneratedMessageReflection, we actually let the protocol compiler
// generate a full protocol message implementation and then test its
// reflection interface.  This is much easier and more maintainable than
// trying to create our own Message class for GeneratedMessageReflection
// to wrap.
//
// The tests here closely mirror some of the tests in
// compiler/cpp/unittest, except using the reflection interface
// rather than generated accessors.

#include <google/protobuf/generated_message_reflection.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/test_util.h>
#include <google/protobuf/unittest.pb.h>

#include <google/protobuf/stubs/common.h>
#include <google/protobuf/testing/googletest.h>
#include <gtest/gtest.h>

namespace google {
namespace protobuf {

namespace {

// Shorthand to get a FieldDescriptor for a field of unittest::TestAllTypes.
const FieldDescriptor* F(const string& name) {
  const FieldDescriptor* result =
    unittest::TestAllTypes::descriptor()->FindFieldByName(name);
  GOOGLE_CHECK(result != NULL);
  return result;
}

TEST(GeneratedMessageReflectionTest, Defaults) {
  // Check that all default values are set correctly in the initial message.
  unittest::TestAllTypes message;
  TestUtil::ReflectionTester reflection_tester(
    unittest::TestAllTypes::descriptor());

  reflection_tester.ExpectClearViaReflection(message);

  const Reflection* reflection = message.GetReflection();

  // Messages should return pointers to default instances until first use.
  // (This is not checked by ExpectClear() since it is not actually true after
  // the fields have been set and then cleared.)
  EXPECT_EQ(&unittest::TestAllTypes::OptionalGroup::default_instance(),
            &reflection->GetMessage(message, F("optionalgroup")));
  EXPECT_EQ(&unittest::TestAllTypes::NestedMessage::default_instance(),
            &reflection->GetMessage(message, F("optional_nested_message")));
  EXPECT_EQ(&unittest::ForeignMessage::default_instance(),
            &reflection->GetMessage(message, F("optional_foreign_message")));
  EXPECT_EQ(&unittest_import::ImportMessage::default_instance(),
            &reflection->GetMessage(message, F("optional_import_message")));
}

TEST(GeneratedMessageReflectionTest, Accessors) {
  // Set every field to a unique value then go back and check all those
  // values.
  unittest::TestAllTypes message;
  TestUtil::ReflectionTester reflection_tester(
    unittest::TestAllTypes::descriptor());

  reflection_tester.SetAllFieldsViaReflection(&message);
  TestUtil::ExpectAllFieldsSet(message);
  reflection_tester.ExpectAllFieldsSetViaReflection(message);

  reflection_tester.ModifyRepeatedFieldsViaReflection(&message);
  TestUtil::ExpectRepeatedFieldsModified(message);
}

TEST(GeneratedMessageReflectionTest, GetStringReference) {
  // Test that GetStringReference() returns the underlying string when it is
  // a normal string field.
  unittest::TestAllTypes message;
  message.set_optional_string("foo");
  message.add_repeated_string("foo");

  const Reflection* reflection = message.GetReflection();
  string scratch;

  EXPECT_EQ(&message.optional_string(),
      &reflection->GetStringReference(message, F("optional_string"), &scratch))
    << "For simple string fields, GetStringReference() should return a "
       "reference to the underlying string.";
  EXPECT_EQ(&message.repeated_string(0),
      &reflection->GetRepeatedStringReference(message, F("repeated_string"),
                                              0, &scratch))
    << "For simple string fields, GetRepeatedStringReference() should return "
       "a reference to the underlying string.";
}


TEST(GeneratedMessageReflectionTest, DefaultsAfterClear) {
  // Check that after setting all fields and then clearing, getting an
  // embedded message does NOT return the default instance.
  unittest::TestAllTypes message;
  TestUtil::ReflectionTester reflection_tester(
    unittest::TestAllTypes::descriptor());

  TestUtil::SetAllFields(&message);
  message.Clear();

  const Reflection* reflection = message.GetReflection();

  EXPECT_NE(&unittest::TestAllTypes::OptionalGroup::default_instance(),
            &reflection->GetMessage(message, F("optionalgroup")));
  EXPECT_NE(&unittest::TestAllTypes::NestedMessage::default_instance(),
            &reflection->GetMessage(message, F("optional_nested_message")));
  EXPECT_NE(&unittest::ForeignMessage::default_instance(),
            &reflection->GetMessage(message, F("optional_foreign_message")));
  EXPECT_NE(&unittest_import::ImportMessage::default_instance(),
            &reflection->GetMessage(message, F("optional_import_message")));
}


TEST(GeneratedMessageReflectionTest, Swap) {
  unittest::TestAllTypes message1;
  unittest::TestAllTypes message2;

  TestUtil::SetAllFields(&message1);

  const Reflection* reflection = message1.GetReflection();
  reflection->Swap(&message1, &message2);

  TestUtil::ExpectClear(message1);
  TestUtil::ExpectAllFieldsSet(message2);
}

TEST(GeneratedMessageReflectionTest, SwapWithBothSet) {
  unittest::TestAllTypes message1;
  unittest::TestAllTypes message2;

  TestUtil::SetAllFields(&message1);
  TestUtil::SetAllFields(&message2);
  TestUtil::ModifyRepeatedFields(&message2);

  const Reflection* reflection = message1.GetReflection();
  reflection->Swap(&message1, &message2);

  TestUtil::ExpectRepeatedFieldsModified(message1);
  TestUtil::ExpectAllFieldsSet(message2);

  message1.set_optional_int32(532819);

  reflection->Swap(&message1, &message2);

  EXPECT_EQ(532819, message2.optional_int32());
}

TEST(GeneratedMessageReflectionTest, SwapExtensions) {
  unittest::TestAllExtensions message1;
  unittest::TestAllExtensions message2;

  TestUtil::SetAllExtensions(&message1);

  const Reflection* reflection = message1.GetReflection();
  reflection->Swap(&message1, &message2);

  TestUtil::ExpectExtensionsClear(message1);
  TestUtil::ExpectAllExtensionsSet(message2);
}

TEST(GeneratedMessageReflectionTest, SwapUnknown) {
  unittest::TestEmptyMessage message1, message2;

  message1.mutable_unknown_fields()->AddVarint(1234, 1);

  EXPECT_EQ(1, message1.unknown_fields().field_count());
  EXPECT_EQ(0, message2.unknown_fields().field_count());
  const Reflection* reflection = message1.GetReflection();
  reflection->Swap(&message1, &message2);
  EXPECT_EQ(0, message1.unknown_fields().field_count());
  EXPECT_EQ(1, message2.unknown_fields().field_count());
}

TEST(GeneratedMessageReflectionTest, RemoveLast) {
  unittest::TestAllTypes message;
  TestUtil::ReflectionTester reflection_tester(
    unittest::TestAllTypes::descriptor());

  TestUtil::SetAllFields(&message);

  reflection_tester.RemoveLastRepeatedsViaReflection(&message);

  TestUtil::ExpectLastRepeatedsRemoved(message);
}

TEST(GeneratedMessageReflectionTest, RemoveLastExtensions) {
  unittest::TestAllExtensions message;
  TestUtil::ReflectionTester reflection_tester(
    unittest::TestAllExtensions::descriptor());

  TestUtil::SetAllExtensions(&message);

  reflection_tester.RemoveLastRepeatedsViaReflection(&message);

  TestUtil::ExpectLastRepeatedExtensionsRemoved(message);
}

TEST(GeneratedMessageReflectionTest, ReleaseLast) {
  unittest::TestAllTypes message;
  const Descriptor* descriptor = message.GetDescriptor();
  TestUtil::ReflectionTester reflection_tester(descriptor);

  TestUtil::SetAllFields(&message);

  reflection_tester.ReleaseLastRepeatedsViaReflection(&message, false);

  TestUtil::ExpectLastRepeatedsReleased(message);

  // Now test that we actually release the right message.
  message.Clear();
  TestUtil::SetAllFields(&message);
  ASSERT_EQ(2, message.repeated_foreign_message_size());
  const protobuf_unittest::ForeignMessage* expected =
      message.mutable_repeated_foreign_message(1);
  scoped_ptr<Message> released(message.GetReflection()->ReleaseLast(
      &message, descriptor->FindFieldByName("repeated_foreign_message")));
  EXPECT_EQ(expected, released.get());
}

TEST(GeneratedMessageReflectionTest, ReleaseLastExtensions) {
  unittest::TestAllExtensions message;
  const Descriptor* descriptor = message.GetDescriptor();
  TestUtil::ReflectionTester reflection_tester(descriptor);

  TestUtil::SetAllExtensions(&message);

  reflection_tester.ReleaseLastRepeatedsViaReflection(&message, true);

  TestUtil::ExpectLastRepeatedExtensionsReleased(message);

  // Now test that we actually release the right message.
  message.Clear();
  TestUtil::SetAllExtensions(&message);
  ASSERT_EQ(2, message.ExtensionSize(
      unittest::repeated_foreign_message_extension));
  const protobuf_unittest::ForeignMessage* expected = message.MutableExtension(
      unittest::repeated_foreign_message_extension, 1);
  scoped_ptr<Message> released(message.GetReflection()->ReleaseLast(
      &message, descriptor->file()->FindExtensionByName(
          "repeated_foreign_message_extension")));
  EXPECT_EQ(expected, released.get());

}

TEST(GeneratedMessageReflectionTest, SwapRepeatedElements) {
  unittest::TestAllTypes message;
  TestUtil::ReflectionTester reflection_tester(
    unittest::TestAllTypes::descriptor());

  TestUtil::SetAllFields(&message);

  // Swap and test that fields are all swapped.
  reflection_tester.SwapRepeatedsViaReflection(&message);
  TestUtil::ExpectRepeatedsSwapped(message);

  // Swap back and test that fields are all back to original values.
  reflection_tester.SwapRepeatedsViaReflection(&message);
  TestUtil::ExpectAllFieldsSet(message);
}

TEST(GeneratedMessageReflectionTest, SwapRepeatedElementsExtension) {
  unittest::TestAllExtensions message;
  TestUtil::ReflectionTester reflection_tester(
    unittest::TestAllExtensions::descriptor());

  TestUtil::SetAllExtensions(&message);

  // Swap and test that fields are all swapped.
  reflection_tester.SwapRepeatedsViaReflection(&message);
  TestUtil::ExpectRepeatedExtensionsSwapped(message);

  // Swap back and test that fields are all back to original values.
  reflection_tester.SwapRepeatedsViaReflection(&message);
  TestUtil::ExpectAllExtensionsSet(message);
}

TEST(GeneratedMessageReflectionTest, Extensions) {
  // Set every extension to a unique value then go back and check all those
  // values.
  unittest::TestAllExtensions message;
  TestUtil::ReflectionTester reflection_tester(
    unittest::TestAllExtensions::descriptor());

  reflection_tester.SetAllFieldsViaReflection(&message);
  TestUtil::ExpectAllExtensionsSet(message);
  reflection_tester.ExpectAllFieldsSetViaReflection(message);

  reflection_tester.ModifyRepeatedFieldsViaReflection(&message);
  TestUtil::ExpectRepeatedExtensionsModified(message);
}

TEST(GeneratedMessageReflectionTest, FindExtensionTypeByNumber) {
  const Reflection* reflection =
    unittest::TestAllExtensions::default_instance().GetReflection();

  const FieldDescriptor* extension1 =
    unittest::TestAllExtensions::descriptor()->file()->FindExtensionByName(
      "optional_int32_extension");
  const FieldDescriptor* extension2 =
    unittest::TestAllExtensions::descriptor()->file()->FindExtensionByName(
      "repeated_string_extension");

  EXPECT_EQ(extension1,
            reflection->FindKnownExtensionByNumber(extension1->number()));
  EXPECT_EQ(extension2,
            reflection->FindKnownExtensionByNumber(extension2->number()));

  // Non-existent extension.
  EXPECT_TRUE(reflection->FindKnownExtensionByNumber(62341) == NULL);

  // Extensions of TestAllExtensions should not show up as extensions of
  // other types.
  EXPECT_TRUE(unittest::TestAllTypes::default_instance().GetReflection()->
              FindKnownExtensionByNumber(extension1->number()) == NULL);
}

TEST(GeneratedMessageReflectionTest, FindKnownExtensionByName) {
  const Reflection* reflection =
    unittest::TestAllExtensions::default_instance().GetReflection();

  const FieldDescriptor* extension1 =
    unittest::TestAllExtensions::descriptor()->file()->FindExtensionByName(
      "optional_int32_extension");
  const FieldDescriptor* extension2 =
    unittest::TestAllExtensions::descriptor()->file()->FindExtensionByName(
      "repeated_string_extension");

  EXPECT_EQ(extension1,
            reflection->FindKnownExtensionByName(extension1->full_name()));
  EXPECT_EQ(extension2,
            reflection->FindKnownExtensionByName(extension2->full_name()));

  // Non-existent extension.
  EXPECT_TRUE(reflection->FindKnownExtensionByName("no_such_ext") == NULL);

  // Extensions of TestAllExtensions should not show up as extensions of
  // other types.
  EXPECT_TRUE(unittest::TestAllTypes::default_instance().GetReflection()->
              FindKnownExtensionByName(extension1->full_name()) == NULL);
}

TEST(GeneratedMessageReflectionTest, ReleaseMessageTest) {
  unittest::TestAllTypes message;
  TestUtil::ReflectionTester reflection_tester(
    unittest::TestAllTypes::descriptor());

  // When nothing is set, we expect all released messages to be NULL.
  reflection_tester.ExpectMessagesReleasedViaReflection(
      &message, TestUtil::ReflectionTester::IS_NULL);

  // After fields are set we should get non-NULL releases.
  reflection_tester.SetAllFieldsViaReflection(&message);
  reflection_tester.ExpectMessagesReleasedViaReflection(
      &message, TestUtil::ReflectionTester::NOT_NULL);

  // After Clear() we may or may not get a message from ReleaseMessage().
  // This is implementation specific.
  reflection_tester.SetAllFieldsViaReflection(&message);
  message.Clear();
  reflection_tester.ExpectMessagesReleasedViaReflection(
      &message, TestUtil::ReflectionTester::CAN_BE_NULL);

  // Test a different code path for setting after releasing.
  TestUtil::SetAllFields(&message);
  TestUtil::ExpectAllFieldsSet(message);
}

TEST(GeneratedMessageReflectionTest, ReleaseExtensionMessageTest) {
  unittest::TestAllExtensions message;
  TestUtil::ReflectionTester reflection_tester(
    unittest::TestAllExtensions::descriptor());

  // When nothing is set, we expect all released messages to be NULL.
  reflection_tester.ExpectMessagesReleasedViaReflection(
      &message, TestUtil::ReflectionTester::IS_NULL);

  // After fields are set we should get non-NULL releases.
  reflection_tester.SetAllFieldsViaReflection(&message);
  reflection_tester.ExpectMessagesReleasedViaReflection(
      &message, TestUtil::ReflectionTester::NOT_NULL);

  // After Clear() we may or may not get a message from ReleaseMessage().
  // This is implementation specific.
  reflection_tester.SetAllFieldsViaReflection(&message);
  message.Clear();
  reflection_tester.ExpectMessagesReleasedViaReflection(
      &message, TestUtil::ReflectionTester::CAN_BE_NULL);

  // Test a different code path for setting after releasing.
  TestUtil::SetAllExtensions(&message);
  TestUtil::ExpectAllExtensionsSet(message);
}

#ifdef PROTOBUF_HAS_DEATH_TEST

TEST(GeneratedMessageReflectionTest, UsageErrors) {
  unittest::TestAllTypes message;
  const Reflection* reflection = message.GetReflection();
  const Descriptor* descriptor = message.GetDescriptor();

#define f(NAME) descriptor->FindFieldByName(NAME)

  // Testing every single failure mode would be too much work.  Let's just
  // check a few.
  EXPECT_DEATH(
    reflection->GetInt32(
      message, descriptor->FindFieldByName("optional_int64")),
    "Protocol Buffer reflection usage error:\n"
    "  Method      : google::protobuf::Reflection::GetInt32\n"
    "  Message type: protobuf_unittest\\.TestAllTypes\n"
    "  Field       : protobuf_unittest\\.TestAllTypes\\.optional_int64\n"
    "  Problem     : Field is not the right type for this message:\n"
    "    Expected  : CPPTYPE_INT32\n"
    "    Field type: CPPTYPE_INT64");
  EXPECT_DEATH(
    reflection->GetInt32(
      message, descriptor->FindFieldByName("repeated_int32")),
    "Protocol Buffer reflection usage error:\n"
    "  Method      : google::protobuf::Reflection::GetInt32\n"
    "  Message type: protobuf_unittest.TestAllTypes\n"
    "  Field       : protobuf_unittest.TestAllTypes.repeated_int32\n"
    "  Problem     : Field is repeated; the method requires a singular field.");
  EXPECT_DEATH(
    reflection->GetInt32(
      message, unittest::ForeignMessage::descriptor()->FindFieldByName("c")),
    "Protocol Buffer reflection usage error:\n"
    "  Method      : google::protobuf::Reflection::GetInt32\n"
    "  Message type: protobuf_unittest.TestAllTypes\n"
    "  Field       : protobuf_unittest.ForeignMessage.c\n"
    "  Problem     : Field does not match message type.");
  EXPECT_DEATH(
    reflection->HasField(
      message, unittest::ForeignMessage::descriptor()->FindFieldByName("c")),
    "Protocol Buffer reflection usage error:\n"
    "  Method      : google::protobuf::Reflection::HasField\n"
    "  Message type: protobuf_unittest.TestAllTypes\n"
    "  Field       : protobuf_unittest.ForeignMessage.c\n"
    "  Problem     : Field does not match message type.");

#undef f
}

#endif  // PROTOBUF_HAS_DEATH_TEST


}  // namespace
}  // namespace protobuf
}  // namespace google