Merge commit '36bca61764984ff5395653cf8377ec5daa71b709' as 'libs/protobuf'

libs/protobuf/objectivec/Tests/GPBObjectiveCPlusPlusTest.mm

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+// Protocol Buffers - Google's data interchange format
+// Copyright 2013 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// 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.
+
+#import "GPBTestUtilities.h"
+
+//
+// This is just a compile test (here to make sure things never regress).
+//
+// Objective C++ can run into issues with how the NS_ENUM/CF_ENUM declaration
+// works because of the C++ spec being used for that compilation unit. So
+// the fact that these imports all work without errors/warning means things
+// are still good.
+//
+// The "well know types" should have cross file enums needing imports.
+#import "GPBProtocolBuffers.h"
+// Some of the tests explicitly use cross file enums also.
+#import "objectivec/Tests/Unittest.pbobjc.h"
+#import "objectivec/Tests/UnittestImport.pbobjc.h"
+
+// Sanity check the conditions of the test within the Xcode project.
+#if !__cplusplus
+#error This isn't compiled as Objective C++?
+#elif __cplusplus >= 201103L
+// If this trips, it means the Xcode default might have change (or someone
+// edited the testing project) and it might be time to revisit the GPB_ENUM
+// define in GPBBootstrap.h.
+#warning Did the Xcode default for C++ spec change?
+#endif
+
+// Dummy XCTest.
+@interface GPBObjectiveCPlusPlusTests : GPBTestCase
+@end
+
+@implementation GPBObjectiveCPlusPlusTests
+- (void)testCPlusPlus {
+  // Nothing, This was a compile test.
+  XCTAssertTrue(YES);
+}
+@end