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Commit 85466206 authored by Thomas Van Lenten's avatar Thomas Van Lenten Committed by GitHub
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Merge pull request #3104 from thomasvl/ext_registry_copy 

Fix ExtensionRegistry copying and add tests.
parents b28617b8 49e4ba60
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Showing with 187 additions and 23 deletions
Makefile.am
View file @ 85466206
......@@ -535,6 +535,7 @@ objectivec_EXTRA_DIST= \
objectivec/Tests/GPBDictionaryTests+UInt64.m \
objectivec/Tests/GPBDictionaryTests.m \
objectivec/Tests/GPBDictionaryTests.pddm \
objectivec/Tests/GPBExtensionRegistryTest.m \
objectivec/Tests/GPBMessageTests+Merge.m \
objectivec/Tests/GPBMessageTests+Runtime.m \
objectivec/Tests/GPBMessageTests+Serialization.m \
......
objectivec/GPBExtensionRegistry.m
View file @ 85466206
......@@ -57,14 +57,16 @@
- (instancetype)copyWithZone:(NSZone *)zone {
GPBExtensionRegistry *result = [[[self class] allocWithZone:zone] init];
if (result && mutableClassMap_.count) {
[result->mutableClassMap_ addEntriesFromDictionary:mutableClassMap_];
}
[result addExtensions:self];
return result;
}
- (CFMutableDictionaryRef)extensionMapForContainingMessageClass:
(Class)containingMessageClass {
- (void)addExtension:(GPBExtensionDescriptor *)extension {
if (extension == nil) {
return;
}
Class containingMessageClass = extension.containingMessageClass;
CFMutableDictionaryRef extensionMap = (CFMutableDictionaryRef)
[mutableClassMap_ objectForKey:containingMessageClass];
if (extensionMap == nil) {
......@@ -74,18 +76,9 @@
&kCFTypeDictionaryValueCallBacks);
[mutableClassMap_ setObject:(id)extensionMap
forKey:(id<NSCopying>)containingMessageClass];
CFRelease(extensionMap);
}
return extensionMap;
}
- (void)addExtension:(GPBExtensionDescriptor *)extension {
if (extension == nil) {
return;
}
Class containingMessageClass = extension.containingMessageClass;
CFMutableDictionaryRef extensionMap =
[self extensionMapForContainingMessageClass:containingMessageClass];
ssize_t key = extension.fieldNumber;
CFDictionarySetValue(extensionMap, (const void *)key, extension);
}
......@@ -119,10 +112,16 @@ static void CopyKeyValue(const void *key, const void *value, void *context) {
Class containingMessageClass = key;
CFMutableDictionaryRef otherExtensionMap = (CFMutableDictionaryRef)value;
CFMutableDictionaryRef extensionMap =
[self extensionMapForContainingMessageClass:containingMessageClass];
CFDictionaryApplyFunction(otherExtensionMap, CopyKeyValue, extensionMap);
CFMutableDictionaryRef extensionMap = (CFMutableDictionaryRef)
[mutableClassMap_ objectForKey:containingMessageClass];
if (extensionMap == nil) {
extensionMap = CFDictionaryCreateMutableCopy(kCFAllocatorDefault, 0, otherExtensionMap);
[mutableClassMap_ setObject:(id)extensionMap
forKey:(id<NSCopying>)containingMessageClass];
CFRelease(extensionMap);
} else {
CFDictionaryApplyFunction(otherExtensionMap, CopyKeyValue, extensionMap);
}
}];
}
......
objectivec/ProtocolBuffers_OSX.xcodeproj/project.pbxproj
View file @ 85466206
......@@ -52,6 +52,7 @@
F4487C751AADF7F500531423 /* GPBMessageTests+Runtime.m in Sources */ = {isa = PBXBuildFile; fileRef = F4487C741AADF7F500531423 /* GPBMessageTests+Runtime.m */; };
F4487C7F1AAF62CD00531423 /* GPBMessageTests+Serialization.m in Sources */ = {isa = PBXBuildFile; fileRef = F4487C7E1AAF62CD00531423 /* GPBMessageTests+Serialization.m */; };
F4487C831AAF6AB300531423 /* GPBMessageTests+Merge.m in Sources */ = {isa = PBXBuildFile; fileRef = F4487C821AAF6AB300531423 /* GPBMessageTests+Merge.m */; };
F4584D821ECCB52A00803AB6 /* GPBExtensionRegistryTest.m in Sources */ = {isa = PBXBuildFile; fileRef = F4584D7E1ECCB38900803AB6 /* GPBExtensionRegistryTest.m */; };
F45C69CC16DFD08D0081955B /* GPBExtensionInternals.m in Sources */ = {isa = PBXBuildFile; fileRef = F45C69CB16DFD08D0081955B /* GPBExtensionInternals.m */; };
F45E57C71AE6DC6A000B7D99 /* text_format_map_unittest_data.txt in Resources */ = {isa = PBXBuildFile; fileRef = F45E57C61AE6DC6A000B7D99 /* text_format_map_unittest_data.txt */; };
F47476E51D21A524007C7B1A /* Duration.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = 8B4248D41A92826400BC1EC6 /* Duration.pbobjc.m */; };
......@@ -180,6 +181,7 @@
F4487C821AAF6AB300531423 /* GPBMessageTests+Merge.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "GPBMessageTests+Merge.m"; sourceTree = "<group>"; };
F44929001C866B1900C2548A /* GPBCodedOutputStream_PackagePrivate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = GPBCodedOutputStream_PackagePrivate.h; sourceTree = "<group>"; };
F451D3F51A8AAE8700B8A22C /* GPBProtocolBuffers_RuntimeSupport.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GPBProtocolBuffers_RuntimeSupport.h; sourceTree = "<group>"; };
F4584D7E1ECCB38900803AB6 /* GPBExtensionRegistryTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GPBExtensionRegistryTest.m; sourceTree = "<group>"; };
F45C69CB16DFD08D0081955B /* GPBExtensionInternals.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GPBExtensionInternals.m; sourceTree = "<group>"; };
F45E57C61AE6DC6A000B7D99 /* text_format_map_unittest_data.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = text_format_map_unittest_data.txt; sourceTree = "<group>"; };
F4AC9E1D1A8BEB3500BD6E83 /* unittest_cycle.proto */ = {isa = PBXFileReference; lastKnownFileType = text; path = unittest_cycle.proto; sourceTree = "<group>"; };
......@@ -403,6 +405,7 @@
F4353D301AC06F10005A6198 /* GPBDictionaryTests+String.m */,
F4353D311AC06F10005A6198 /* GPBDictionaryTests+UInt32.m */,
F4353D321AC06F10005A6198 /* GPBDictionaryTests+UInt64.m */,
F4584D7E1ECCB38900803AB6 /* GPBExtensionRegistryTest.m */,
7461B6A30F94FDF800A0C422 /* GPBMessageTests.m */,
F4487C821AAF6AB300531423 /* GPBMessageTests+Merge.m */,
F4487C741AADF7F500531423 /* GPBMessageTests+Runtime.m */,
......@@ -418,8 +421,8 @@
7461B6BA0F94FDF900A0C422 /* GPBUtilitiesTests.m */,
8B4248DB1A92933A00BC1EC6 /* GPBWellKnownTypesTest.m */,
7461B6BC0F94FDF900A0C422 /* GPBWireFormatTests.m */,
F43C88CF191D77FC009E917D /* text_format_unittest_data.txt */,
F45E57C61AE6DC6A000B7D99 /* text_format_map_unittest_data.txt */,
F43C88CF191D77FC009E917D /* text_format_unittest_data.txt */,
8B7E6A7414893DBA00F8884A /* unittest_custom_options.proto */,
F4AC9E1D1A8BEB3500BD6E83 /* unittest_cycle.proto */,
8B7E6A7514893DBA00F8884A /* unittest_embed_optimize_for.proto */,
......@@ -429,8 +432,8 @@
8BBD9DB016DD1DC8008E1EC1 /* unittest_lite.proto */,
8B7E6A7B14893DBC00F8884A /* unittest_mset.proto */,
8B7E6A7C14893DBC00F8884A /* unittest_no_generic_services.proto */,
8B09AAF614B663A7007B4184 /* unittest_objc.proto */,
F4CF31701B162ED800BD9B06 /* unittest_objc_startup.proto */,
8B09AAF614B663A7007B4184 /* unittest_objc.proto */,
8B7E6A7D14893DBC00F8884A /* unittest_optimize_for.proto */,
F4487C781AADFB3100531423 /* unittest_runtime_proto2.proto */,
F4487C791AADFB3200531423 /* unittest_runtime_proto3.proto */,
......@@ -669,6 +672,7 @@
F4F8D8831D789FD9002CE128 /* GPBUnittestProtos2.m in Sources */,
F4353D1D1AB8822D005A6198 /* GPBDescriptorTests.m in Sources */,
8B4248BB1A8C256A00BC1EC6 /* GPBSwiftTests.swift in Sources */,
F4584D821ECCB52A00803AB6 /* GPBExtensionRegistryTest.m in Sources */,
5102DABC1891A073002037B6 /* GPBConcurrencyTests.m in Sources */,
F4487C751AADF7F500531423 /* GPBMessageTests+Runtime.m in Sources */,
F4353D351AC06F10005A6198 /* GPBDictionaryTests+Int32.m in Sources */,
......
objectivec/ProtocolBuffers_OSX.xcodeproj/xcshareddata/xcschemes/PerformanceTests.xcscheme
View file @ 85466206
......@@ -50,6 +50,12 @@
<Test
Identifier = "DescriptorTests">
</Test>
<Test
Identifier = "GPBAutocreatedArrayTests">
</Test>
<Test
Identifier = "GPBAutocreatedDictionaryTests">
</Test>
<Test
Identifier = "GPBBoolArrayTests">
</Test>
......@@ -89,6 +95,9 @@
<Test
Identifier = "GPBEnumArrayTests">
</Test>
<Test
Identifier = "GPBExtensionRegistryTest">
</Test>
<Test
Identifier = "GPBFloatArrayTests">
</Test>
......
objectivec/ProtocolBuffers_iOS.xcodeproj/project.pbxproj
View file @ 85466206
......@@ -60,6 +60,7 @@
F4487C771AADF84900531423 /* GPBMessageTests+Runtime.m in Sources */ = {isa = PBXBuildFile; fileRef = F4487C761AADF84900531423 /* GPBMessageTests+Runtime.m */; };
F4487C811AAF62FC00531423 /* GPBMessageTests+Serialization.m in Sources */ = {isa = PBXBuildFile; fileRef = F4487C801AAF62FC00531423 /* GPBMessageTests+Serialization.m */; };
F4487C851AAF6AC500531423 /* GPBMessageTests+Merge.m in Sources */ = {isa = PBXBuildFile; fileRef = F4487C841AAF6AC500531423 /* GPBMessageTests+Merge.m */; };
F4584D831ECCB53600803AB6 /* GPBExtensionRegistryTest.m in Sources */ = {isa = PBXBuildFile; fileRef = F4584D801ECCB39E00803AB6 /* GPBExtensionRegistryTest.m */; };
F45C69CC16DFD08D0081955B /* GPBExtensionInternals.m in Sources */ = {isa = PBXBuildFile; fileRef = F45C69CB16DFD08D0081955B /* GPBExtensionInternals.m */; };
F45E57C91AE6DC98000B7D99 /* text_format_map_unittest_data.txt in Resources */ = {isa = PBXBuildFile; fileRef = F45E57C81AE6DC98000B7D99 /* text_format_map_unittest_data.txt */; };
F47476E91D21A537007C7B1A /* Duration.pbobjc.m in Sources */ = {isa = PBXBuildFile; fileRef = 8B4248DE1A929C7D00BC1EC6 /* Duration.pbobjc.m */; };
......@@ -202,6 +203,7 @@
F4487C841AAF6AC500531423 /* GPBMessageTests+Merge.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "GPBMessageTests+Merge.m"; sourceTree = "<group>"; };
F44929021C866B3B00C2548A /* GPBCodedOutputStream_PackagePrivate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = GPBCodedOutputStream_PackagePrivate.h; sourceTree = "<group>"; };
F451D3F61A8AAEA600B8A22C /* GPBProtocolBuffers_RuntimeSupport.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GPBProtocolBuffers_RuntimeSupport.h; sourceTree = "<group>"; };
F4584D801ECCB39E00803AB6 /* GPBExtensionRegistryTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = GPBExtensionRegistryTest.m; path = Tests/GPBExtensionRegistryTest.m; sourceTree = SOURCE_ROOT; };
F45C69CB16DFD08D0081955B /* GPBExtensionInternals.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GPBExtensionInternals.m; sourceTree = "<group>"; };
F45E57C81AE6DC98000B7D99 /* text_format_map_unittest_data.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = text_format_map_unittest_data.txt; sourceTree = "<group>"; };
F4AC9E1C1A8BEB1000BD6E83 /* unittest_cycle.proto */ = {isa = PBXFileReference; lastKnownFileType = text; path = unittest_cycle.proto; sourceTree = "<group>"; };
......@@ -441,6 +443,7 @@
F4353D3E1AC06F31005A6198 /* GPBDictionaryTests+String.m */,
F4353D3F1AC06F31005A6198 /* GPBDictionaryTests+UInt32.m */,
F4353D401AC06F31005A6198 /* GPBDictionaryTests+UInt64.m */,
F4584D801ECCB39E00803AB6 /* GPBExtensionRegistryTest.m */,
7461B6A30F94FDF800A0C422 /* GPBMessageTests.m */,
F4487C841AAF6AC500531423 /* GPBMessageTests+Merge.m */,
F4487C761AADF84900531423 /* GPBMessageTests+Runtime.m */,
......@@ -456,8 +459,8 @@
7461B6BA0F94FDF900A0C422 /* GPBUtilitiesTests.m */,
8B4248E51A929C9900BC1EC6 /* GPBWellKnownTypesTest.m */,
7461B6BC0F94FDF900A0C422 /* GPBWireFormatTests.m */,
F43C88CF191D77FC009E917D /* text_format_unittest_data.txt */,
F45E57C81AE6DC98000B7D99 /* text_format_map_unittest_data.txt */,
F43C88CF191D77FC009E917D /* text_format_unittest_data.txt */,
8B7E6A7414893DBA00F8884A /* unittest_custom_options.proto */,
F4AC9E1C1A8BEB1000BD6E83 /* unittest_cycle.proto */,
8B7E6A7514893DBA00F8884A /* unittest_embed_optimize_for.proto */,
......@@ -467,8 +470,8 @@
8BBD9DB016DD1DC8008E1EC1 /* unittest_lite.proto */,
8B7E6A7B14893DBC00F8884A /* unittest_mset.proto */,
8B7E6A7C14893DBC00F8884A /* unittest_no_generic_services.proto */,
8B09AAF614B663A7007B4184 /* unittest_objc.proto */,
F4CF31711B162EF500BD9B06 /* unittest_objc_startup.proto */,
8B09AAF614B663A7007B4184 /* unittest_objc.proto */,
8B7E6A7D14893DBC00F8884A /* unittest_optimize_for.proto */,
F4487C7A1AADFB5500531423 /* unittest_runtime_proto2.proto */,
F4487C7B1AADFB5500531423 /* unittest_runtime_proto3.proto */,
......@@ -765,6 +768,7 @@
F4F8D8861D78A193002CE128 /* GPBUnittestProtos2.m in Sources */,
F4B51B1C1BBC5C7100744318 /* GPBObjectiveCPlusPlusTest.mm in Sources */,
8B4248B41A8BD96E00BC1EC6 /* GPBSwiftTests.swift in Sources */,
F4584D831ECCB53600803AB6 /* GPBExtensionRegistryTest.m in Sources */,
5102DABC1891A073002037B6 /* GPBConcurrencyTests.m in Sources */,
F4487C771AADF84900531423 /* GPBMessageTests+Runtime.m in Sources */,
F4353D431AC06F31005A6198 /* GPBDictionaryTests+Int32.m in Sources */,
......
objectivec/ProtocolBuffers_iOS.xcodeproj/xcshareddata/xcschemes/PerformanceTests.xcscheme
View file @ 85466206
......@@ -50,6 +50,12 @@
<Test
Identifier = "DescriptorTests">
</Test>
<Test
Identifier = "GPBAutocreatedArrayTests">
</Test>
<Test
Identifier = "GPBAutocreatedDictionaryTests">
</Test>
<Test
Identifier = "GPBBoolArrayTests">
</Test>
......@@ -89,6 +95,9 @@
<Test
Identifier = "GPBEnumArrayTests">
</Test>
<Test
Identifier = "GPBExtensionRegistryTest">
</Test>
<Test
Identifier = "GPBFloatArrayTests">
</Test>
......
objectivec/Tests/GPBExtensionRegistryTest.m 0 → 100644
View file @ 85466206
// Protocol Buffers - Google's data interchange format
// Copyright 2017 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"
#import "GPBExtensionRegistry.h"
#import "google/protobuf/Unittest.pbobjc.h"
@interface GPBExtensionRegistryTest : GPBTestCase
@end
@implementation GPBExtensionRegistryTest
- (void)testBasics {
GPBExtensionRegistry *reg = [[[GPBExtensionRegistry alloc] init] autorelease];
XCTAssertNotNil(reg);
XCTAssertNil([reg extensionForDescriptor:[TestAllExtensions descriptor]
fieldNumber:1]);
XCTAssertNil([reg extensionForDescriptor:[TestAllTypes descriptor]
fieldNumber:1]);
[reg addExtension:[UnittestRoot optionalInt32Extension]];
[reg addExtension:[UnittestRoot packedInt64Extension]];
XCTAssertTrue([reg extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:1] ==
[UnittestRoot optionalInt32Extension]); // ptr equality
XCTAssertNil([reg extensionForDescriptor:[TestAllTypes descriptor]
fieldNumber:1]);
XCTAssertTrue([reg extensionForDescriptor:[TestPackedExtensions descriptor] fieldNumber:91] ==
[UnittestRoot packedInt64Extension]); // ptr equality
}
- (void)testCopy {
GPBExtensionRegistry *reg1 = [[[GPBExtensionRegistry alloc] init] autorelease];
[reg1 addExtension:[UnittestRoot optionalInt32Extension]];
GPBExtensionRegistry *reg2 = [[reg1 copy] autorelease];
XCTAssertNotNil(reg2);
XCTAssertTrue([reg1 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:1] ==
[UnittestRoot optionalInt32Extension]); // ptr equality
XCTAssertTrue([reg2 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:1] ==
[UnittestRoot optionalInt32Extension]); // ptr equality
// Message class that had registered extension(s) at the -copy time.
[reg1 addExtension:[UnittestRoot optionalBoolExtension]];
[reg2 addExtension:[UnittestRoot optionalStringExtension]];
XCTAssertTrue([reg1 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:13] ==
[UnittestRoot optionalBoolExtension]); // ptr equality
XCTAssertNil([reg1 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:14]);
XCTAssertNil([reg2 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:13]);
XCTAssertTrue([reg2 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:14] ==
[UnittestRoot optionalStringExtension]); // ptr equality
// Message class that did not have any registered extensions at the -copy time.
[reg1 addExtension:[UnittestRoot packedInt64Extension]];
[reg2 addExtension:[UnittestRoot packedSint32Extension]];
XCTAssertTrue([reg1 extensionForDescriptor:[TestPackedExtensions descriptor] fieldNumber:91] ==
[UnittestRoot packedInt64Extension]); // ptr equality
XCTAssertNil([reg1 extensionForDescriptor:[TestPackedExtensions descriptor] fieldNumber:94]);
XCTAssertNil([reg2 extensionForDescriptor:[TestPackedExtensions descriptor] fieldNumber:91]);
XCTAssertTrue([reg2 extensionForDescriptor:[TestPackedExtensions descriptor] fieldNumber:94] ==
[UnittestRoot packedSint32Extension]); // ptr equality
}
- (void)testAddExtensions {
GPBExtensionRegistry *reg1 = [[[GPBExtensionRegistry alloc] init] autorelease];
[reg1 addExtension:[UnittestRoot optionalInt32Extension]];
GPBExtensionRegistry *reg2 = [[[GPBExtensionRegistry alloc] init] autorelease];
XCTAssertNil([reg2 extensionForDescriptor:[TestAllExtensions descriptor]
fieldNumber:1]);
[reg2 addExtensions:reg1];
XCTAssertTrue([reg2 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:1] ==
[UnittestRoot optionalInt32Extension]); // ptr equality
// Confirm adding to the first doesn't add to the second.
[reg1 addExtension:[UnittestRoot optionalBoolExtension]];
[reg1 addExtension:[UnittestRoot packedInt64Extension]];
XCTAssertTrue([reg1 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:13] ==
[UnittestRoot optionalBoolExtension]); // ptr equality
XCTAssertTrue([reg1 extensionForDescriptor:[TestPackedExtensions descriptor] fieldNumber:91] ==
[UnittestRoot packedInt64Extension]); // ptr equality
XCTAssertNil([reg2 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:13]);
XCTAssertNil([reg2 extensionForDescriptor:[TestPackedExtensions descriptor] fieldNumber:91]);
// Confirm adding to the second doesn't add to the first.
[reg2 addExtension:[UnittestRoot optionalStringExtension]];
[reg2 addExtension:[UnittestRoot packedSint32Extension]];
XCTAssertNil([reg1 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:14]);
XCTAssertNil([reg1 extensionForDescriptor:[TestPackedExtensions descriptor] fieldNumber:94]);
XCTAssertTrue([reg2 extensionForDescriptor:[TestAllExtensions descriptor] fieldNumber:14] ==
[UnittestRoot optionalStringExtension]); // ptr equality
XCTAssertTrue([reg2 extensionForDescriptor:[TestPackedExtensions descriptor] fieldNumber:94] ==
[UnittestRoot packedSint32Extension]); // ptr equality
}
@end
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