objectivec/Tests/GPBUtilitiesTests.m - third_party/protobuf - Git at Google

 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 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 <XCTest/XCTest.h>

 #import "GPBUtilities_PackagePrivate.h"

 #import <objc/runtime.h>

 #import "GPBTestUtilities.h"

 #import "GPBDescriptor.h"
 #import "GPBDescriptor_PackagePrivate.h"
 #import "GPBMessage.h"
 #import "GPBUnknownField_PackagePrivate.h"

 #import "objectivec/Tests/MapUnittest.pbobjc.h"
 #import "objectivec/Tests/Unittest.pbobjc.h"
 #import "objectivec/Tests/UnittestObjc.pbobjc.h"

 @interface UtilitiesTests : GPBTestCase
 @end

 @implementation UtilitiesTests

 - (void)testRightShiftFunctions {
   XCTAssertEqual((1UL << 31) >> 31, 1UL);
   XCTAssertEqual((int32_t)(1U << 31) >> 31, -1);
   XCTAssertEqual((1ULL << 63) >> 63, 1ULL);
   XCTAssertEqual((int64_t)(1ULL << 63) >> 63, -1LL);

   XCTAssertEqual(GPBLogicalRightShift32((1U << 31), 31), 1);
   XCTAssertEqual(GPBLogicalRightShift64((1ULL << 63), 63), 1LL);
 }

 - (void)testGPBDecodeTextFormatName {
   uint8_t decodeData[] = {
       // clang-format off
     0x6,
     // An inlined string (first to make sure the leading null is handled
     // correctly, and with a key of zero to check that).
     0x0, 0x0, 'z', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'I', 'J', 0x0,
     // All as is (00 op)
     0x1, 0x0A, 0x0,
     // Underscore, upper + 9 (10 op)
     0x3, 0xCA, 0x0,
     //  Upper + 3 (10 op), underscore, upper + 5 (10 op)
     0x2, 0x44, 0xC6, 0x0,
     // All Upper for 4 (11 op), underscore, underscore, upper + 5 (10 op),
     // underscore, lower + 0 (01 op)
     0x4, 0x64, 0x80, 0xC5, 0xA1, 0x0,
     // 2 byte key: as is + 3 (00 op), underscore, lower + 4 (01 op),
     //   underscore, lower + 3 (01 op), underscore, lower + 1 (01 op),
     //   underscore, lower + 30 (01 op), as is + 30 (00 op), as is + 13 (00 op),
     //   underscore, as is + 3 (00 op)
     0xE8, 0x07, 0x04, 0xA5, 0xA4, 0xA2, 0xBF, 0x1F, 0x0E, 0x84, 0x0,
       // clang-format on
   };
   NSString *inputStr = @"abcdefghIJ";

   // Empty inputs

   XCTAssertNil(GPBDecodeTextFormatName(nil, 1, NULL));
   XCTAssertNil(GPBDecodeTextFormatName(decodeData, 1, NULL));
   XCTAssertNil(GPBDecodeTextFormatName(nil, 1, inputStr));

   // Keys not found.

   XCTAssertNil(GPBDecodeTextFormatName(decodeData, 5, inputStr));
   XCTAssertNil(GPBDecodeTextFormatName(decodeData, -1, inputStr));

   // Some name decodes.

   XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 1, inputStr), @"abcdefghIJ");
   XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 2, inputStr), @"Abcd_EfghIJ");
   XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 3, inputStr), @"_AbcdefghIJ");
   XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 4, inputStr), @"ABCD__EfghI_j");

   // An inlined string (and key of zero).
   XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 0, inputStr), @"zbcdefghIJ");

   // clang-format off
   // Long name so multiple decode ops are needed.
   inputStr = @"longFieldNameIsLooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong1000";
   XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 1000, inputStr),
                         @"long_field_name_is_looooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong_1000");
   // clang-format on
 }

 - (void)testTextFormat {
   TestAllTypes *message = [TestAllTypes message];

   // Not kGPBDefaultRepeatCount because we are comparing to golden master file
   // which was generated with 2.
   [self setAllFields:message repeatedCount:2];

   NSString *result = GPBTextFormatForMessage(message, nil);

   NSString *fileName = @"text_format_unittest_data.txt";
   NSData *resultData = [result dataUsingEncoding:NSUTF8StringEncoding];
   NSData *expectedData = [self getDataFileNamed:fileName dataToWrite:resultData];
   NSString *expected = [[NSString alloc] initWithData:expectedData encoding:NSUTF8StringEncoding];
   XCTAssertEqualObjects(expected, result);
   [expected release];
 }

 - (void)testTextFormatExtra {
   // -testTextFormat uses all protos with fields that don't require special
   // handing for figuring out the names.  The ObjC proto has a bunch of oddball
   // field and enum names that require the decode info to get right, so this
   // confirms they generated and decoded correctly.

   self_Class *message = [self_Class message];
   message.cmd = YES;
   message.isProxy_p = YES;
   message.subEnum = self_autorelease_RetainCount;
   message.new_p.copy_p = @"foo";

   // clang-format off
   NSString *expected = @"_cmd: true\n"
                        @"isProxy: true\n"
                        @"SubEnum: retainCount\n"
                        @"New {\n"
                        @"  copy: \"foo\"\n"
                        @"}\n";
   // clang-format on
   NSString *result = GPBTextFormatForMessage(message, nil);
   XCTAssertEqualObjects(expected, result);
 }

 - (void)testTextFormatMaps {
   TestMap *message = [TestMap message];

   // Map iteration order doesn't have to be stable, so use only one entry.
   [self setAllMapFields:message numEntries:1];

   NSString *result = GPBTextFormatForMessage(message, nil);

   NSString *fileName = @"text_format_map_unittest_data.txt";
   NSData *resultData = [result dataUsingEncoding:NSUTF8StringEncoding];
   NSData *expectedData = [self getDataFileNamed:fileName dataToWrite:resultData];
   NSString *expected = [[NSString alloc] initWithData:expectedData encoding:NSUTF8StringEncoding];
   XCTAssertEqualObjects(expected, result);
   [expected release];
 }

 - (void)testTextFormatExtensions {
   TestAllExtensions *message = [TestAllExtensions message];

   // Not kGPBDefaultRepeatCount because we are comparing to golden master file
   // which was generated with 2.
   [self setAllExtensions:message repeatedCount:2];

   NSString *result = GPBTextFormatForMessage(message, nil);

   // NOTE: ObjC TextFormat doesn't have the proper extension names so it
   // uses comments for the ObjC name and raw numbers for the fields instead
   // of the bracketed extension name.
   NSString *fileName = @"text_format_extensions_unittest_data.txt";
   NSData *resultData = [result dataUsingEncoding:NSUTF8StringEncoding];
   NSData *expectedData = [self getDataFileNamed:fileName dataToWrite:resultData];
   NSString *expected = [[NSString alloc] initWithData:expectedData encoding:NSUTF8StringEncoding];
   XCTAssertEqualObjects(expected, result);
   [expected release];
 }

 - (void)testSetRepeatedFields {
   TestAllTypes *message = [TestAllTypes message];

   NSDictionary *repeatedFieldValues = @{
     @"repeatedStringArray" : [@[ @"foo", @"bar" ] mutableCopy],
     @"repeatedBoolArray" : [GPBBoolArray arrayWithValue:YES],
     @"repeatedInt32Array" : [GPBInt32Array arrayWithValue:14],
     @"repeatedInt64Array" : [GPBInt64Array arrayWithValue:15],
     @"repeatedUint32Array" : [GPBUInt32Array arrayWithValue:16],
     @"repeatedUint64Array" : [GPBUInt64Array arrayWithValue:16],
     @"repeatedFloatArray" : [GPBFloatArray arrayWithValue:16],
     @"repeatedDoubleArray" : [GPBDoubleArray arrayWithValue:16],
     @"repeatedNestedEnumArray" :
         [GPBEnumArray arrayWithValidationFunction:TestAllTypes_NestedEnum_IsValidValue
                                          rawValue:TestAllTypes_NestedEnum_Foo],
   };
   for (NSString *fieldName in repeatedFieldValues) {
     GPBFieldDescriptor *field = [message.descriptor fieldWithName:fieldName];
     XCTAssertNotNil(field, @"No field with name: %@", fieldName);
     id expectedValues = repeatedFieldValues[fieldName];
     GPBSetMessageRepeatedField(message, field, expectedValues);
     XCTAssertEqualObjects(expectedValues, [message valueForKeyPath:fieldName]);
   }
 }

 // Helper to make an unknown field set with something in it.
 static GPBUnknownFieldSet *UnknownFieldsSetHelper(int num) {
   GPBUnknownFieldSet *result = [[[GPBUnknownFieldSet alloc] init] autorelease];

   GPBUnknownField *field = [[[GPBUnknownField alloc] initWithNumber:num] autorelease];
   [field addVarint:num];
   [result addField:field];

   return result;
 }

 - (void)testDropMessageUnknownFieldsRecursively {
   TestAllExtensions *message = [TestAllExtensions message];

   // Give it unknownFields.
   message.unknownFields = UnknownFieldsSetHelper(777);

   // Given it extensions that include a message with unknown fields of its own.
   {
     // Int
     [message setExtension:[UnittestRoot optionalInt32Extension] value:@5];

     // Group
     OptionalGroup_extension *optionalGroup = [OptionalGroup_extension message];
     optionalGroup.a = 123;
     optionalGroup.unknownFields = UnknownFieldsSetHelper(779);
     [message setExtension:[UnittestRoot optionalGroupExtension] value:optionalGroup];

     // Message
     TestAllTypes_NestedMessage *nestedMessage = [TestAllTypes_NestedMessage message];
     nestedMessage.bb = 456;
     nestedMessage.unknownFields = UnknownFieldsSetHelper(778);
     [message setExtension:[UnittestRoot optionalNestedMessageExtension] value:nestedMessage];

     // Repeated Group
     RepeatedGroup_extension *repeatedGroup = [[RepeatedGroup_extension alloc] init];
     repeatedGroup.a = 567;
     repeatedGroup.unknownFields = UnknownFieldsSetHelper(780);
     [message addExtension:[UnittestRoot repeatedGroupExtension] value:repeatedGroup];
     [repeatedGroup release];

     // Repeated Message
     nestedMessage = [[TestAllTypes_NestedMessage alloc] init];
     nestedMessage.bb = 678;
     nestedMessage.unknownFields = UnknownFieldsSetHelper(781);
     [message addExtension:[UnittestRoot repeatedNestedMessageExtension] value:nestedMessage];
     [nestedMessage release];
   }

   // Confirm everything is there.

   XCTAssertNotNil(message);
   XCTAssertNotNil(message.unknownFields);
   XCTAssertTrue([message hasExtension:[UnittestRoot optionalInt32Extension]]);

   {
     XCTAssertTrue([message hasExtension:[UnittestRoot optionalGroupExtension]]);
     OptionalGroup_extension *optionalGroup =
         [message getExtension:[UnittestRoot optionalGroupExtension]];
     XCTAssertNotNil(optionalGroup);
     XCTAssertEqual(optionalGroup.a, 123);
     XCTAssertNotNil(optionalGroup.unknownFields);
   }

   {
     XCTAssertTrue([message hasExtension:[UnittestRoot optionalNestedMessageExtension]]);
     TestAllTypes_NestedMessage *nestedMessage =
         [message getExtension:[UnittestRoot optionalNestedMessageExtension]];
     XCTAssertNotNil(nestedMessage);
     XCTAssertEqual(nestedMessage.bb, 456);
     XCTAssertNotNil(nestedMessage.unknownFields);
   }

   {
     XCTAssertTrue([message hasExtension:[UnittestRoot repeatedGroupExtension]]);
     NSArray *repeatedGroups = [message getExtension:[UnittestRoot repeatedGroupExtension]];
     XCTAssertEqual(repeatedGroups.count, (NSUInteger)1);
     RepeatedGroup_extension *repeatedGroup = repeatedGroups.firstObject;
     XCTAssertNotNil(repeatedGroup);
     XCTAssertEqual(repeatedGroup.a, 567);
     XCTAssertNotNil(repeatedGroup.unknownFields);
   }

   {
     XCTAssertTrue([message hasExtension:[UnittestRoot repeatedNestedMessageExtension]]);
     NSArray *repeatedNestedMessages =
         [message getExtension:[UnittestRoot repeatedNestedMessageExtension]];
     XCTAssertEqual(repeatedNestedMessages.count, (NSUInteger)1);
     TestAllTypes_NestedMessage *repeatedNestedMessage = repeatedNestedMessages.firstObject;
     XCTAssertNotNil(repeatedNestedMessage);
     XCTAssertEqual(repeatedNestedMessage.bb, 678);
     XCTAssertNotNil(repeatedNestedMessage.unknownFields);
   }

   // Drop them.
   GPBMessageDropUnknownFieldsRecursively(message);

   // Confirm unknowns are gone from within the messages.

   XCTAssertNotNil(message);
   XCTAssertNil(message.unknownFields);
   XCTAssertTrue([message hasExtension:[UnittestRoot optionalInt32Extension]]);

   {
     XCTAssertTrue([message hasExtension:[UnittestRoot optionalGroupExtension]]);
     OptionalGroup_extension *optionalGroup =
         [message getExtension:[UnittestRoot optionalGroupExtension]];
     XCTAssertNotNil(optionalGroup);
     XCTAssertEqual(optionalGroup.a, 123);
     XCTAssertNil(optionalGroup.unknownFields);
   }

   {
     XCTAssertTrue([message hasExtension:[UnittestRoot optionalNestedMessageExtension]]);
     TestAllTypes_NestedMessage *nestedMessage =
         [message getExtension:[UnittestRoot optionalNestedMessageExtension]];
     XCTAssertNotNil(nestedMessage);
     XCTAssertEqual(nestedMessage.bb, 456);
     XCTAssertNil(nestedMessage.unknownFields);
   }

   {
     XCTAssertTrue([message hasExtension:[UnittestRoot repeatedGroupExtension]]);
     NSArray *repeatedGroups = [message getExtension:[UnittestRoot repeatedGroupExtension]];
     XCTAssertEqual(repeatedGroups.count, (NSUInteger)1);
     RepeatedGroup_extension *repeatedGroup = repeatedGroups.firstObject;
     XCTAssertNotNil(repeatedGroup);
     XCTAssertEqual(repeatedGroup.a, 567);
     XCTAssertNil(repeatedGroup.unknownFields);
   }

   {
     XCTAssertTrue([message hasExtension:[UnittestRoot repeatedNestedMessageExtension]]);
     NSArray *repeatedNestedMessages =
         [message getExtension:[UnittestRoot repeatedNestedMessageExtension]];
     XCTAssertEqual(repeatedNestedMessages.count, (NSUInteger)1);
     TestAllTypes_NestedMessage *repeatedNestedMessage = repeatedNestedMessages.firstObject;
     XCTAssertNotNil(repeatedNestedMessage);
     XCTAssertEqual(repeatedNestedMessage.bb, 678);
     XCTAssertNil(repeatedNestedMessage.unknownFields);
   }
 }

 - (void)testDropMessageUnknownFieldsRecursively_Maps {
   TestMap *message = [TestMap message];

   {
     ForeignMessage *foreignMessage = [ForeignMessage message];
     foreignMessage.unknownFields = UnknownFieldsSetHelper(100);
     [message.mapInt32ForeignMessage setObject:foreignMessage forKey:100];

     foreignMessage = [ForeignMessage message];
     foreignMessage.unknownFields = UnknownFieldsSetHelper(101);
     [message.mapStringForeignMessage setObject:foreignMessage forKey:@"101"];
   }

   // Confirm everything is there.

   XCTAssertNotNil(message);

   {
     ForeignMessage *foreignMessage = [message.mapInt32ForeignMessage objectForKey:100];
     XCTAssertNotNil(foreignMessage);
     XCTAssertNotNil(foreignMessage.unknownFields);
   }

   {
     ForeignMessage *foreignMessage = [message.mapStringForeignMessage objectForKey:@"101"];
     XCTAssertNotNil(foreignMessage);
     XCTAssertNotNil(foreignMessage.unknownFields);
   }

   GPBMessageDropUnknownFieldsRecursively(message);

   // Confirm unknowns are gone from within the messages.

   XCTAssertNotNil(message);

   {
     ForeignMessage *foreignMessage = [message.mapInt32ForeignMessage objectForKey:100];
     XCTAssertNotNil(foreignMessage);
     XCTAssertNil(foreignMessage.unknownFields);
   }

   {
     ForeignMessage *foreignMessage = [message.mapStringForeignMessage objectForKey:@"101"];
     XCTAssertNotNil(foreignMessage);
     XCTAssertNil(foreignMessage.unknownFields);
   }
 }

 @end
	// Protocol Buffers - Google's data interchange format
	// Copyright 2008 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 <XCTest/XCTest.h>

	#import "GPBUtilities_PackagePrivate.h"

	#import <objc/runtime.h>

	#import "GPBTestUtilities.h"

	#import "GPBDescriptor.h"
	#import "GPBDescriptor_PackagePrivate.h"
	#import "GPBMessage.h"
	#import "GPBUnknownField_PackagePrivate.h"

	#import "objectivec/Tests/MapUnittest.pbobjc.h"
	#import "objectivec/Tests/Unittest.pbobjc.h"
	#import "objectivec/Tests/UnittestObjc.pbobjc.h"

	@interface UtilitiesTests : GPBTestCase
	@end

	@implementation UtilitiesTests

	- (void)testRightShiftFunctions {
	XCTAssertEqual((1UL << 31) >> 31, 1UL);
	XCTAssertEqual((int32_t)(1U << 31) >> 31, -1);
	XCTAssertEqual((1ULL << 63) >> 63, 1ULL);
	XCTAssertEqual((int64_t)(1ULL << 63) >> 63, -1LL);

	XCTAssertEqual(GPBLogicalRightShift32((1U << 31), 31), 1);
	XCTAssertEqual(GPBLogicalRightShift64((1ULL << 63), 63), 1LL);
	}

	- (void)testGPBDecodeTextFormatName {
	uint8_t decodeData[] = {
	// clang-format off
	0x6,
	// An inlined string (first to make sure the leading null is handled
	// correctly, and with a key of zero to check that).
	0x0, 0x0, 'z', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'I', 'J', 0x0,
	// All as is (00 op)
	0x1, 0x0A, 0x0,
	// Underscore, upper + 9 (10 op)
	0x3, 0xCA, 0x0,
	// Upper + 3 (10 op), underscore, upper + 5 (10 op)
	0x2, 0x44, 0xC6, 0x0,
	// All Upper for 4 (11 op), underscore, underscore, upper + 5 (10 op),
	// underscore, lower + 0 (01 op)
	0x4, 0x64, 0x80, 0xC5, 0xA1, 0x0,
	// 2 byte key: as is + 3 (00 op), underscore, lower + 4 (01 op),
	// underscore, lower + 3 (01 op), underscore, lower + 1 (01 op),
	// underscore, lower + 30 (01 op), as is + 30 (00 op), as is + 13 (00 op),
	// underscore, as is + 3 (00 op)
	0xE8, 0x07, 0x04, 0xA5, 0xA4, 0xA2, 0xBF, 0x1F, 0x0E, 0x84, 0x0,
	// clang-format on
	};
	NSString *inputStr = @"abcdefghIJ";

	// Empty inputs

	XCTAssertNil(GPBDecodeTextFormatName(nil, 1, NULL));
	XCTAssertNil(GPBDecodeTextFormatName(decodeData, 1, NULL));
	XCTAssertNil(GPBDecodeTextFormatName(nil, 1, inputStr));

	// Keys not found.

	XCTAssertNil(GPBDecodeTextFormatName(decodeData, 5, inputStr));
	XCTAssertNil(GPBDecodeTextFormatName(decodeData, -1, inputStr));

	// Some name decodes.

	XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 1, inputStr), @"abcdefghIJ");
	XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 2, inputStr), @"Abcd_EfghIJ");
	XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 3, inputStr), @"_AbcdefghIJ");
	XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 4, inputStr), @"ABCD__EfghI_j");

	// An inlined string (and key of zero).
	XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 0, inputStr), @"zbcdefghIJ");

	// clang-format off
	// Long name so multiple decode ops are needed.
	inputStr = @"longFieldNameIsLooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong1000";
	XCTAssertEqualObjects(GPBDecodeTextFormatName(decodeData, 1000, inputStr),
	@"long_field_name_is_looooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong_1000");
	// clang-format on
	}

	- (void)testTextFormat {
	TestAllTypes *message = [TestAllTypes message];

	// Not kGPBDefaultRepeatCount because we are comparing to golden master file
	// which was generated with 2.
	[self setAllFields:message repeatedCount:2];

	NSString *result = GPBTextFormatForMessage(message, nil);

	NSString *fileName = @"text_format_unittest_data.txt";
	NSData *resultData = [result dataUsingEncoding:NSUTF8StringEncoding];
	NSData *expectedData = [self getDataFileNamed:fileName dataToWrite:resultData];
	NSString *expected = [[NSString alloc] initWithData:expectedData encoding:NSUTF8StringEncoding];
	XCTAssertEqualObjects(expected, result);
	[expected release];
	}

	- (void)testTextFormatExtra {
	// -testTextFormat uses all protos with fields that don't require special
	// handing for figuring out the names. The ObjC proto has a bunch of oddball
	// field and enum names that require the decode info to get right, so this
	// confirms they generated and decoded correctly.

	self_Class *message = [self_Class message];
	message.cmd = YES;
	message.isProxy_p = YES;
	message.subEnum = self_autorelease_RetainCount;
	message.new_p.copy_p = @"foo";

	// clang-format off
	NSString *expected = @"_cmd: true\n"
	@"isProxy: true\n"
	@"SubEnum: retainCount\n"
	@"New {\n"
	@" copy: \"foo\"\n"
	@"}\n";
	// clang-format on
	NSString *result = GPBTextFormatForMessage(message, nil);
	XCTAssertEqualObjects(expected, result);
	}

	- (void)testTextFormatMaps {
	TestMap *message = [TestMap message];

	// Map iteration order doesn't have to be stable, so use only one entry.
	[self setAllMapFields:message numEntries:1];

	NSString *result = GPBTextFormatForMessage(message, nil);

	NSString *fileName = @"text_format_map_unittest_data.txt";
	NSData *resultData = [result dataUsingEncoding:NSUTF8StringEncoding];
	NSData *expectedData = [self getDataFileNamed:fileName dataToWrite:resultData];
	NSString *expected = [[NSString alloc] initWithData:expectedData encoding:NSUTF8StringEncoding];
	XCTAssertEqualObjects(expected, result);
	[expected release];
	}

	- (void)testTextFormatExtensions {
	TestAllExtensions *message = [TestAllExtensions message];

	// Not kGPBDefaultRepeatCount because we are comparing to golden master file
	// which was generated with 2.
	[self setAllExtensions:message repeatedCount:2];

	NSString *result = GPBTextFormatForMessage(message, nil);

	// NOTE: ObjC TextFormat doesn't have the proper extension names so it
	// uses comments for the ObjC name and raw numbers for the fields instead
	// of the bracketed extension name.
	NSString *fileName = @"text_format_extensions_unittest_data.txt";
	NSData *resultData = [result dataUsingEncoding:NSUTF8StringEncoding];
	NSData *expectedData = [self getDataFileNamed:fileName dataToWrite:resultData];
	NSString *expected = [[NSString alloc] initWithData:expectedData encoding:NSUTF8StringEncoding];
	XCTAssertEqualObjects(expected, result);
	[expected release];
	}

	- (void)testSetRepeatedFields {
	TestAllTypes *message = [TestAllTypes message];

	NSDictionary *repeatedFieldValues = @{
	@"repeatedStringArray" : [@[ @"foo", @"bar" ] mutableCopy],
	@"repeatedBoolArray" : [GPBBoolArray arrayWithValue:YES],
	@"repeatedInt32Array" : [GPBInt32Array arrayWithValue:14],
	@"repeatedInt64Array" : [GPBInt64Array arrayWithValue:15],
	@"repeatedUint32Array" : [GPBUInt32Array arrayWithValue:16],
	@"repeatedUint64Array" : [GPBUInt64Array arrayWithValue:16],
	@"repeatedFloatArray" : [GPBFloatArray arrayWithValue:16],
	@"repeatedDoubleArray" : [GPBDoubleArray arrayWithValue:16],
	@"repeatedNestedEnumArray" :
	[GPBEnumArray arrayWithValidationFunction:TestAllTypes_NestedEnum_IsValidValue
	rawValue:TestAllTypes_NestedEnum_Foo],
	};
	for (NSString *fieldName in repeatedFieldValues) {
	GPBFieldDescriptor *field = [message.descriptor fieldWithName:fieldName];
	XCTAssertNotNil(field, @"No field with name: %@", fieldName);
	id expectedValues = repeatedFieldValues[fieldName];
	GPBSetMessageRepeatedField(message, field, expectedValues);
	XCTAssertEqualObjects(expectedValues, [message valueForKeyPath:fieldName]);
	}
	}

	// Helper to make an unknown field set with something in it.
	static GPBUnknownFieldSet *UnknownFieldsSetHelper(int num) {
	GPBUnknownFieldSet *result = [[[GPBUnknownFieldSet alloc] init] autorelease];

	GPBUnknownField *field = [[[GPBUnknownField alloc] initWithNumber:num] autorelease];
	[field addVarint:num];
	[result addField:field];

	return result;
	}

	- (void)testDropMessageUnknownFieldsRecursively {
	TestAllExtensions *message = [TestAllExtensions message];

	// Give it unknownFields.
	message.unknownFields = UnknownFieldsSetHelper(777);

	// Given it extensions that include a message with unknown fields of its own.
	{
	// Int
	[message setExtension:[UnittestRoot optionalInt32Extension] value:@5];

	// Group
	OptionalGroup_extension *optionalGroup = [OptionalGroup_extension message];
	optionalGroup.a = 123;
	optionalGroup.unknownFields = UnknownFieldsSetHelper(779);
	[message setExtension:[UnittestRoot optionalGroupExtension] value:optionalGroup];

	// Message
	TestAllTypes_NestedMessage *nestedMessage = [TestAllTypes_NestedMessage message];
	nestedMessage.bb = 456;
	nestedMessage.unknownFields = UnknownFieldsSetHelper(778);
	[message setExtension:[UnittestRoot optionalNestedMessageExtension] value:nestedMessage];

	// Repeated Group
	RepeatedGroup_extension *repeatedGroup = [[RepeatedGroup_extension alloc] init];
	repeatedGroup.a = 567;
	repeatedGroup.unknownFields = UnknownFieldsSetHelper(780);
	[message addExtension:[UnittestRoot repeatedGroupExtension] value:repeatedGroup];
	[repeatedGroup release];

	// Repeated Message
	nestedMessage = [[TestAllTypes_NestedMessage alloc] init];
	nestedMessage.bb = 678;
	nestedMessage.unknownFields = UnknownFieldsSetHelper(781);
	[message addExtension:[UnittestRoot repeatedNestedMessageExtension] value:nestedMessage];
	[nestedMessage release];
	}

	// Confirm everything is there.

	XCTAssertNotNil(message);
	XCTAssertNotNil(message.unknownFields);
	XCTAssertTrue([message hasExtension:[UnittestRoot optionalInt32Extension]]);

	{
	XCTAssertTrue([message hasExtension:[UnittestRoot optionalGroupExtension]]);
	OptionalGroup_extension *optionalGroup =
	[message getExtension:[UnittestRoot optionalGroupExtension]];
	XCTAssertNotNil(optionalGroup);
	XCTAssertEqual(optionalGroup.a, 123);
	XCTAssertNotNil(optionalGroup.unknownFields);
	}

	{
	XCTAssertTrue([message hasExtension:[UnittestRoot optionalNestedMessageExtension]]);
	TestAllTypes_NestedMessage *nestedMessage =
	[message getExtension:[UnittestRoot optionalNestedMessageExtension]];
	XCTAssertNotNil(nestedMessage);
	XCTAssertEqual(nestedMessage.bb, 456);
	XCTAssertNotNil(nestedMessage.unknownFields);
	}

	{
	XCTAssertTrue([message hasExtension:[UnittestRoot repeatedGroupExtension]]);
	NSArray *repeatedGroups = [message getExtension:[UnittestRoot repeatedGroupExtension]];
	XCTAssertEqual(repeatedGroups.count, (NSUInteger)1);
	RepeatedGroup_extension *repeatedGroup = repeatedGroups.firstObject;
	XCTAssertNotNil(repeatedGroup);
	XCTAssertEqual(repeatedGroup.a, 567);
	XCTAssertNotNil(repeatedGroup.unknownFields);
	}

	{
	XCTAssertTrue([message hasExtension:[UnittestRoot repeatedNestedMessageExtension]]);
	NSArray *repeatedNestedMessages =
	[message getExtension:[UnittestRoot repeatedNestedMessageExtension]];
	XCTAssertEqual(repeatedNestedMessages.count, (NSUInteger)1);
	TestAllTypes_NestedMessage *repeatedNestedMessage = repeatedNestedMessages.firstObject;
	XCTAssertNotNil(repeatedNestedMessage);
	XCTAssertEqual(repeatedNestedMessage.bb, 678);
	XCTAssertNotNil(repeatedNestedMessage.unknownFields);
	}

	// Drop them.
	GPBMessageDropUnknownFieldsRecursively(message);

	// Confirm unknowns are gone from within the messages.

	XCTAssertNotNil(message);
	XCTAssertNil(message.unknownFields);
	XCTAssertTrue([message hasExtension:[UnittestRoot optionalInt32Extension]]);

	{
	XCTAssertTrue([message hasExtension:[UnittestRoot optionalGroupExtension]]);
	OptionalGroup_extension *optionalGroup =
	[message getExtension:[UnittestRoot optionalGroupExtension]];
	XCTAssertNotNil(optionalGroup);
	XCTAssertEqual(optionalGroup.a, 123);
	XCTAssertNil(optionalGroup.unknownFields);
	}

	{
	XCTAssertTrue([message hasExtension:[UnittestRoot optionalNestedMessageExtension]]);
	TestAllTypes_NestedMessage *nestedMessage =
	[message getExtension:[UnittestRoot optionalNestedMessageExtension]];
	XCTAssertNotNil(nestedMessage);
	XCTAssertEqual(nestedMessage.bb, 456);
	XCTAssertNil(nestedMessage.unknownFields);
	}

	{
	XCTAssertTrue([message hasExtension:[UnittestRoot repeatedGroupExtension]]);
	NSArray *repeatedGroups = [message getExtension:[UnittestRoot repeatedGroupExtension]];
	XCTAssertEqual(repeatedGroups.count, (NSUInteger)1);
	RepeatedGroup_extension *repeatedGroup = repeatedGroups.firstObject;
	XCTAssertNotNil(repeatedGroup);
	XCTAssertEqual(repeatedGroup.a, 567);
	XCTAssertNil(repeatedGroup.unknownFields);
	}

	{
	XCTAssertTrue([message hasExtension:[UnittestRoot repeatedNestedMessageExtension]]);
	NSArray *repeatedNestedMessages =
	[message getExtension:[UnittestRoot repeatedNestedMessageExtension]];
	XCTAssertEqual(repeatedNestedMessages.count, (NSUInteger)1);
	TestAllTypes_NestedMessage *repeatedNestedMessage = repeatedNestedMessages.firstObject;
	XCTAssertNotNil(repeatedNestedMessage);
	XCTAssertEqual(repeatedNestedMessage.bb, 678);
	XCTAssertNil(repeatedNestedMessage.unknownFields);
	}
	}

	- (void)testDropMessageUnknownFieldsRecursively_Maps {
	TestMap *message = [TestMap message];

	{
	ForeignMessage *foreignMessage = [ForeignMessage message];
	foreignMessage.unknownFields = UnknownFieldsSetHelper(100);
	[message.mapInt32ForeignMessage setObject:foreignMessage forKey:100];

	foreignMessage = [ForeignMessage message];
	foreignMessage.unknownFields = UnknownFieldsSetHelper(101);
	[message.mapStringForeignMessage setObject:foreignMessage forKey:@"101"];
	}

	// Confirm everything is there.

	XCTAssertNotNil(message);

	{
	ForeignMessage *foreignMessage = [message.mapInt32ForeignMessage objectForKey:100];
	XCTAssertNotNil(foreignMessage);
	XCTAssertNotNil(foreignMessage.unknownFields);
	}

	{
	ForeignMessage *foreignMessage = [message.mapStringForeignMessage objectForKey:@"101"];
	XCTAssertNotNil(foreignMessage);
	XCTAssertNotNil(foreignMessage.unknownFields);
	}

	GPBMessageDropUnknownFieldsRecursively(message);

	// Confirm unknowns are gone from within the messages.

	XCTAssertNotNil(message);

	{
	ForeignMessage *foreignMessage = [message.mapInt32ForeignMessage objectForKey:100];
	XCTAssertNotNil(foreignMessage);
	XCTAssertNil(foreignMessage.unknownFields);
	}

	{
	ForeignMessage *foreignMessage = [message.mapStringForeignMessage objectForKey:@"101"];
	XCTAssertNotNil(foreignMessage);
	XCTAssertNil(foreignMessage.unknownFields);
	}
	}

	@end