Protocol Buffers - Google's data interchange format (grpc依赖) https://developers.google.com/protocol-buffers/
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// 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
#import <Foundation/Foundation.h>
#import "GPBCodedInputStream.h"
#import "GPBCodedInputStream_PackagePrivate.h"
#import "GPBCodedOutputStream.h"
#import "GPBTestUtilities.h"
#import "GPBUnknownField.h"
#import "GPBUnknownFieldSet_PackagePrivate.h"
#import "GPBUnknownFields.h"
#import "GPBUtilities_PackagePrivate.h"
#import "GPBWireFormat.h"
#import "objectivec/Tests/Unittest.pbobjc.h"
@interface CodedInputStreamTests : GPBTestCase
@end
@implementation CodedInputStreamTests
- (NSData*)bytes_with_sentinel:(int32_t)unused, ... {
va_list list;
va_start(list, unused);
NSMutableData* values = [NSMutableData dataWithCapacity:0];
int32_t i;
while ((i = va_arg(list, int32_t)) != 256) {
NSAssert(i >= 0 && i < 256, @"");
uint8_t u = (uint8_t)i;
[values appendBytes:&u length:1];
}
va_end(list);
return values;
}
#define bytes(...) [self bytes_with_sentinel:0, __VA_ARGS__, 256]
- (void)testDecodeZigZag {
[self assertReadZigZag32:bytes(0x0) value:0];
[self assertReadZigZag32:bytes(0x1) value:-1];
[self assertReadZigZag32:bytes(0x2) value:1];
[self assertReadZigZag32:bytes(0x3) value:-2];
[self assertReadZigZag32:bytes(0xFE, 0xFF, 0xFF, 0xFF, 0x07) value:(int32_t)0x3FFFFFFF];
[self assertReadZigZag32:bytes(0xFF, 0xFF, 0xFF, 0xFF, 0x07) value:(int32_t)0xC0000000];
[self assertReadZigZag32:bytes(0xFE, 0xFF, 0xFF, 0xFF, 0x0F) value:(int32_t)0x7FFFFFFF];
[self assertReadZigZag32:bytes(0xFF, 0xFF, 0xFF, 0xFF, 0x0F) value:(int32_t)0x80000000];
[self assertReadZigZag64:bytes(0x0) value:0];
[self assertReadZigZag64:bytes(0x1) value:-1];
[self assertReadZigZag64:bytes(0x2) value:1];
[self assertReadZigZag64:bytes(0x3) value:-2];
[self assertReadZigZag64:bytes(0xFE, 0xFF, 0xFF, 0xFF, 0x07) value:(int32_t)0x3FFFFFFF];
[self assertReadZigZag64:bytes(0xFF, 0xFF, 0xFF, 0xFF, 0x07) value:(int32_t)0xC0000000];
[self assertReadZigZag64:bytes(0xFE, 0xFF, 0xFF, 0xFF, 0x0F) value:(int32_t)0x7FFFFFFF];
[self assertReadZigZag64:bytes(0xFF, 0xFF, 0xFF, 0xFF, 0x0F) value:(int32_t)0x80000000];
[self assertReadZigZag64:bytes(0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01)
value:0x7FFFFFFFFFFFFFFFL];
[self assertReadZigZag64:bytes(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01)
value:0x8000000000000000L];
}
- (void)assertReadVarint:(NSData*)data value:(int64_t)value {
if (value <= INT32_MAX && value >= INT32_MIN) {
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual((int32_t)value, [input readInt32]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual((int32_t)value, [input readEnum]);
}
}
if (value <= UINT32_MAX && value >= 0) {
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual((uint32_t)value, [input readUInt32]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value, [input readInt64]);
}
if (value >= 0) {
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual((uint64_t)value, [input readUInt64]);
}
}
- (void)assertReadLittleEndian32:(NSData*)data value:(int32_t)value {
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value, [input readSFixed32]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(GPBConvertInt32ToFloat(value), [input readFloat]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual((uint32_t)value, [input readFixed32]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value, [input readSFixed32]);
}
}
- (void)assertReadLittleEndian64:(NSData*)data value:(int64_t)value {
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value, [input readSFixed64]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(GPBConvertInt64ToDouble(value), [input readDouble]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual((uint64_t)value, [input readFixed64]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value, [input readSFixed64]);
}
}
- (void)assertReadZigZag32:(NSData*)data value:(int64_t)value {
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual((int32_t)value, [input readSInt32]);
}
- (void)assertReadZigZag64:(NSData*)data value:(int64_t)value {
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value, [input readSInt64]);
}
- (void)assertReadVarintFailure:(NSData*)data {
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertThrows([input readInt32]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertThrows([input readInt64]);
}
}
- (void)testBytes {
NSData* data = bytes(0xa2, 0x74);
XCTAssertEqual(data.length, (NSUInteger)2);
XCTAssertEqual(((uint8_t*)data.bytes)[0], (uint8_t)0xa2);
XCTAssertEqual(((uint8_t*)data.bytes)[1], (uint8_t)0x74);
}
- (void)testReadBool {
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:bytes(0x00)];
XCTAssertEqual(NO, [input readBool]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:bytes(0x01)];
XCTAssertEqual(YES, [input readBool]);
}
}
- (void)testReadVarint {
[self assertReadVarint:bytes(0x00) value:0];
[self assertReadVarint:bytes(0x01) value:1];
[self assertReadVarint:bytes(0x7f) value:127];
// 14882
[self assertReadVarint:bytes(0xa2, 0x74) value:(0x22 << 0) | (0x74 << 7)];
// 1904930
[self assertReadVarint:bytes(0xa2, 0xa2, 0x74) value:(0x22 << 0) | (0x22 << 7) | (0x74 << 14)];
// 243831074
[self assertReadVarint:bytes(0xa2, 0xa2, 0xa2, 0x74)
value:(0x22 << 0) | (0x22 << 7) | (0x22 << 14) | (0x74 << 21)];
// 2961488830
[self assertReadVarint:bytes(0xbe, 0xf7, 0x92, 0x84, 0x0b)
value:(0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) | (0x0bLL << 28)];
// 64-bit
// 7256456126
[self assertReadVarint:bytes(0xbe, 0xf7, 0x92, 0x84, 0x1b)
value:(0x3e << 0) | (0x77 << 7) | (0x12 << 14) | (0x04 << 21) | (0x1bLL << 28)];
// 41256202580718336
[self assertReadVarint:bytes(0x80, 0xe6, 0xeb, 0x9c, 0xc3, 0xc9, 0xa4, 0x49)
value:(0x00 << 0) | (0x66 << 7) | (0x6b << 14) | (0x1c << 21) | (0x43LL << 28) |
(0x49LL << 35) | (0x24LL << 42) | (0x49LL << 49)];
// 11964378330978735131
[self assertReadVarint:bytes(0x9b, 0xa8, 0xf9, 0xc2, 0xbb, 0xd6, 0x80, 0x85, 0xa6, 0x01)
value:(0x1b << 0) | (0x28 << 7) | (0x79 << 14) | (0x42 << 21) | (0x3bLL << 28) |
(0x56LL << 35) | (0x00LL << 42) | (0x05LL << 49) | (0x26LL << 56) |
(0x01ULL << 63)];
// Failures
[self assertReadVarintFailure:bytes(0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
0x00)];
[self assertReadVarintFailure:bytes(0x80)];
}
- (void)testReadVarint32FromVarint64 {
{
// Turn on lower 31 bits of the upper half on a 64 bit varint.
NSData* data = bytes(0x80, 0x80, 0x80, 0x80, 0xF0, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E);
int32_t value32 = 0x0;
GPBCodedInputStream* input32 = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value32, [input32 readInt32]);
int64_t value64 = INT64_MAX & 0xFFFFFFFF00000000;
GPBCodedInputStream* input64 = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value64, [input64 readInt64]);
}
{
// Turn on lower 31 bits and lower 31 bits on upper half on a 64 bit varint.
NSData* data = bytes(0xFF, 0xFF, 0xFF, 0xFF, 0xF7, 0xFF, 0xFF, 0xFF, 0xFF, 0x7E);
int32_t value32 = INT32_MAX;
GPBCodedInputStream* input32 = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value32, [input32 readInt32]);
int64_t value64 = INT64_MAX & 0xFFFFFFFF7FFFFFFF;
GPBCodedInputStream* input64 = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value64, [input64 readInt64]);
}
{
// Turn on bits 32 and 64 bit on a 64 bit varint.
NSData* data = bytes(0x80, 0x80, 0x80, 0x80, 0x88, 0x80, 0x80, 0x80, 0x80, 0x01);
int32_t value32 = INT32_MIN;
GPBCodedInputStream* input32 = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value32, [input32 readInt32]);
int64_t value64 = INT64_MIN | (0x01LL << 31);
GPBCodedInputStream* input64 = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value64, [input64 readInt64]);
}
}
- (void)testReadLittleEndian {
[self assertReadLittleEndian32:bytes(0x78, 0x56, 0x34, 0x12) value:0x12345678];
[self assertReadLittleEndian32:bytes(0xf0, 0xde, 0xbc, 0x9a) value:0x9abcdef0];
[self assertReadLittleEndian64:bytes(0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34, 0x12)
value:0x123456789abcdef0LL];
[self assertReadLittleEndian64:bytes(0x78, 0x56, 0x34, 0x12, 0xf0, 0xde, 0xbc, 0x9a)
value:0x9abcdef012345678LL];
}
- (void)testReadWholeMessage {
TestAllTypes* message = [self allSetRepeatedCount:kGPBDefaultRepeatCount];
NSData* rawBytes = message.data;
XCTAssertEqual(message.serializedSize, (size_t)rawBytes.length);
TestAllTypes* message2 = [TestAllTypes parseFromData:rawBytes extensionRegistry:nil error:NULL];
[self assertAllFieldsSet:message2 repeatedCount:kGPBDefaultRepeatCount];
}
- (void)testSkipWholeMessage {
TestAllTypes* message = [self allSetRepeatedCount:kGPBDefaultRepeatCount];
NSData* rawBytes = message.data;
TestEmptyMessage* empty = [TestEmptyMessage parseFromData:rawBytes error:NULL];
XCTAssertNotNil(empty);
GPBUnknownFields* ufs = [[[GPBUnknownFields alloc] initFromMessage:empty] autorelease];
NSMutableArray<NSNumber*>* fieldNumbers = [NSMutableArray arrayWithCapacity:ufs.count];
for (GPBUnknownField* field in ufs) {
GPBWireFormat wireFormat;
switch (field.type) {
case GPBUnknownFieldTypeFixed32:
wireFormat = GPBWireFormatFixed32;
break;
case GPBUnknownFieldTypeFixed64:
wireFormat = GPBWireFormatFixed64;
break;
case GPBUnknownFieldTypeVarint:
wireFormat = GPBWireFormatVarint;
break;
case GPBUnknownFieldTypeLengthDelimited:
wireFormat = GPBWireFormatLengthDelimited;
break;
case GPBUnknownFieldTypeGroup:
wireFormat = GPBWireFormatStartGroup;
break;
case GPBUnknownFieldTypeLegacy:
XCTFail(@"Legacy field type not expected");
wireFormat = GPBWireFormatVarint;
break;
}
uint32_t tag = GPBWireFormatMakeTag(field.number, wireFormat);
[fieldNumbers addObject:@(tag)];
}
// Check the tags compared to what's in the UnknownFields to confirm the stream is
// skipping as expected (this covers the tags within a group also).
GPBCodedInputStream* input1 = [GPBCodedInputStream streamWithData:rawBytes];
GPBCodedInputStream* input2 = [GPBCodedInputStream streamWithData:rawBytes];
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
GPBUnknownFieldSet* unknownFields = [[[GPBUnknownFieldSet alloc] init] autorelease];
#pragma clang diagnostic pop
NSUInteger idx = 0;
while (YES) {
int32_t tag = [input1 readTag];
XCTAssertEqual(tag, [input2 readTag]);
if (tag == 0) {
XCTAssertEqual(idx, fieldNumbers.count);
break;
}
XCTAssertEqual(tag, [fieldNumbers[idx] intValue]);
[unknownFields mergeFieldFrom:tag input:input1];
[input2 skipField:tag];
++idx;
}
}
- (void)testLimit {
TestAllTypes* message = [self allSetRepeatedCount:kGPBDefaultRepeatCount];
NSData* rawBytes = message.data;
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:rawBytes];
XCTAssertEqual([input bytesUntilLimit], rawBytes.length);
[input pushLimit:8];
XCTAssertEqual([input bytesUntilLimit], 8u);
[input popLimit:3];
XCTAssertEqual([input bytesUntilLimit], 3u);
[input readTag];
XCTAssertEqual([input position], 1u);
XCTAssertEqual([input bytesUntilLimit], 2u);
}
- (void)testReadHugeBlob {
// Allocate and initialize a 1MB blob.
NSMutableData* blob = [NSMutableData dataWithLength:1 << 20];
for (NSUInteger i = 0; i < blob.length; i++) {
((uint8_t*)blob.mutableBytes)[i] = (uint8_t)i;
}
// Make a message containing it.
TestAllTypes* message = [TestAllTypes message];
[self setAllFields:message repeatedCount:kGPBDefaultRepeatCount];
[message setOptionalBytes:blob];
// Serialize and parse it. Make sure to parse from an InputStream, not
// directly from a ByteString, so that CodedInputStream uses buffered
// reading.
NSData* messageData = message.data;
XCTAssertNotNil(messageData);
GPBCodedInputStream* stream = [GPBCodedInputStream streamWithData:messageData];
TestAllTypes* message2 = [TestAllTypes parseFromCodedInputStream:stream
extensionRegistry:nil
error:NULL];
XCTAssertEqualObjects(message.optionalBytes, message2.optionalBytes);
// Make sure all the other fields were parsed correctly.
TestAllTypes* message3 = [[message2 copy] autorelease];
TestAllTypes* types = [self allSetRepeatedCount:kGPBDefaultRepeatCount];
NSData* data = [types optionalBytes];
[message3 setOptionalBytes:data];
[self assertAllFieldsSet:message3 repeatedCount:kGPBDefaultRepeatCount];
}
- (void)testReadMaliciouslyLargeBlob {
NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
GPBCodedOutputStream* output = [GPBCodedOutputStream streamWithOutputStream:rawOutput];
int32_t tag = GPBWireFormatMakeTag(1, GPBWireFormatLengthDelimited);
[output writeRawVarint32:tag];
[output writeRawVarint32:0x7FFFFFFF];
uint8_t bytes[32] = {0};
[output writeRawData:[NSData dataWithBytes:bytes length:32]];
[output flush];
NSData* data = [rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
GPBCodedInputStream* input =
[GPBCodedInputStream streamWithData:[NSMutableData dataWithData:data]];
XCTAssertEqual(tag, [input readTag]);
XCTAssertThrows([input readBytes]);
}
- (void)testReadEmptyString {
NSData* data = bytes(0x00);
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqualObjects(@"", [input readString]);
}
- (void)testInvalidGroupEndTagThrows {
NSData* data = bytes(0x0B, 0x1A, 0x02, 0x4B, 0x50, 0x14);
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertThrowsSpecificNamed([input skipMessage], NSException, GPBCodedInputStreamException,
@"should throw a GPBCodedInputStreamException exception ");
}
- (void)testBytesOver2GB {
NSData* data = bytes(0xFF, 0xFF, 0xFF, 0xFF, 0x0F, 0x01, 0x02, 0x03); // don't need all the bytes
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
@try {
__unused NSData* result = [input readBytes];
XCTFail(@"Should have thrown");
} @catch (NSException* anException) {
// Ensure the correct error within the exception.
XCTAssertTrue([anException isKindOfClass:[NSException class]]);
XCTAssertEqualObjects(anException.name, GPBCodedInputStreamException);
NSDictionary* userInfo = anException.userInfo;
XCTAssertNotNil(userInfo);
NSError* err = userInfo[GPBCodedInputStreamUnderlyingErrorKey];
XCTAssertNotNil(err);
XCTAssertEqualObjects(err.domain, GPBCodedInputStreamErrorDomain);
XCTAssertEqual(err.code, GPBCodedInputStreamErrorInvalidSize);
}
}
// Verifies fix for b/10315336.
// Note: Now that there isn't a custom string class under the hood, this test
// isn't as critical, but it does cover bad input and if a custom class is added
// again, it will help validate that class' handing of bad utf8.
- (void)testReadMalformedString {
NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
GPBCodedOutputStream* output = [GPBCodedOutputStream streamWithOutputStream:rawOutput];
int32_t tag =
GPBWireFormatMakeTag(TestAllTypes_FieldNumber_DefaultString, GPBWireFormatLengthDelimited);
[output writeRawVarint32:tag];
[output writeRawVarint32:5];
// Create an invalid utf-8 byte array.
uint8_t bytes[] = {0xc2, 0xf2, 0x0, 0x0, 0x0};
[output writeRawData:[NSData dataWithBytes:bytes length:sizeof(bytes)]];
[output flush];
NSData* data = [rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
NSError* error = nil;
TestAllTypes* message = [TestAllTypes parseFromCodedInputStream:input
extensionRegistry:nil
error:&error];
XCTAssertNotNil(error);
XCTAssertNil(message);
}
- (void)testBOMWithinStrings {
// We've seen servers that end up with BOMs within strings (not always at the
// start, and sometimes in multiple places), make sure they always parse
// correctly. (Again, this is inpart in case a custom string class is ever
// used again.)
const char* strs[] = {
"\xEF\xBB\xBF String with BOM",
"String with \xEF\xBB\xBF in middle",
"String with end bom \xEF\xBB\xBF",
"\xEF\xBB\xBF\xe2\x99\xa1", // BOM White Heart
"\xEF\xBB\xBF\xEF\xBB\xBF String with Two BOM",
};
for (size_t i = 0; i < GPBARRAYSIZE(strs); ++i) {
NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
GPBCodedOutputStream* output = [GPBCodedOutputStream streamWithOutputStream:rawOutput];
int32_t tag =
GPBWireFormatMakeTag(TestAllTypes_FieldNumber_DefaultString, GPBWireFormatLengthDelimited);
[output writeRawVarint32:tag];
size_t length = strlen(strs[i]);
[output writeRawVarint32:(int32_t)length];
[output writeRawData:[NSData dataWithBytes:strs[i] length:length]];
[output flush];
NSData* data = [rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
TestAllTypes* message = [TestAllTypes parseFromCodedInputStream:input
extensionRegistry:nil
error:NULL];
XCTAssertNotNil(message, @"Loop %zd", i);
// Ensure the string is there. NSString can consume the BOM in some
// cases, so don't actually check the string for exact equality.
XCTAssertTrue(message.defaultString.length > 0, @"Loop %zd", i);
}
}
- (void)assertReadByteToEndGroupFails:(NSData*)data {
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
uint32_t tag = [input readTag];
XCTAssertThrows(GPBCodedInputStreamReadRetainedBytesToEndGroupNoCopy(
&input->state_, GPBWireFormatGetTagFieldNumber(tag)));
}
- (void)assertReadByteToEndGroup:(NSData*)data value:(NSData*)value {
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
uint32_t tag = [input readTag];
NSData* readValue = GPBCodedInputStreamReadRetainedBytesToEndGroupNoCopy(
&input->state_, GPBWireFormatGetTagFieldNumber(tag));
XCTAssertNotNil(readValue);
XCTAssertEqualObjects(readValue, value);
[readValue release];
}
static NSData* DataForGroupsOfDepth(NSUInteger depth) {
NSMutableData* data = [NSMutableData dataWithCapacity:0];
uint32_t byte = 35; // 35 = 0b100011 -> field 4/start group
for (NSUInteger i = 0; i < depth; ++i) {
[data appendBytes:&byte length:1];
}
byte = 8; // 8 = 0b1000, -> field 1/varint
[data appendBytes:&byte length:1];
byte = 1; // 1 -> varint value of 1
[data appendBytes:&byte length:1];
byte = 36; // 36 = 0b100100 -> field 4/end group
for (NSUInteger i = 0; i < depth; ++i) {
[data appendBytes:&byte length:1];
}
return data;
}
- (void)testBytesToEndGroup {
// 35 = 0b100011 -> field 4/start group
// 36 = 0b100100 -> field 4/end group
// 43 = 0b101011 -> field 5/end group
// 44 = 0b101100 -> field 5/end group
// 8 = 0b1000, 1 -> field 1/varint, value of 1
// 21 = 0b10101, 0x78, 0x56, 0x34, 0x12 -> field 2/fixed32, value of 0x12345678
// 25 = 0b11001, 0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34, 0x12 -> field 3/fixed64,
// value of 0x123456789abcdef0LL
// 50 = 0b110010, 0x0 -> field 6/length delimited, length 0
// 50 = 0b110010, 0x1, 42 -> field 6/length delimited, length 1, byte 42
// 0 -> field 0 which is invalid/varint
// 15 = 0b1111 -> field 1, wire type 7 which is invalid
[self assertReadByteToEndGroup:bytes(35, 36) value:bytes(36)]; // empty group
[self assertReadByteToEndGroup:bytes(35, 8, 1, 36) value:bytes(8, 1, 36)]; // varint
[self assertReadByteToEndGroup:bytes(35, 21, 0x78, 0x56, 0x34, 0x12, 36) // fixed32
value:bytes(21, 0x78, 0x56, 0x34, 0x12, 36)];
[self assertReadByteToEndGroup:bytes(35, 25, 0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34, 0x12,
36) // fixed64
value:bytes(25, 0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34, 0x12, 36)];
[self assertReadByteToEndGroup:bytes(35, 50, 0, 36)
value:bytes(50, 0, 36)]; // length delimited, length 0
[self assertReadByteToEndGroup:bytes(35, 50, 1, 42, 36)
value:bytes(50, 1, 42, 36)]; // length delimited, length 1, byte 42
[self assertReadByteToEndGroup:bytes(35, 43, 44, 36) value:bytes(43, 44, 36)]; // Sub group
[self assertReadByteToEndGroup:bytes(35, 8, 1, 43, 8, 1, 44,
36) // varint and sub group with varint
value:bytes(8, 1, 43, 8, 1, 44, 36)];
[self assertReadByteToEndGroupFails:bytes(35, 0, 36)]; // Invalid field number
[self assertReadByteToEndGroupFails:bytes(35, 15, 36)]; // Invalid wire type
[self assertReadByteToEndGroupFails:bytes(35, 21, 0x78, 0x56, 0x34)]; // truncated fixed32
[self assertReadByteToEndGroupFails:bytes(35, 25, 0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56,
0x34)]; // truncated fixed64
// Mising end group
[self assertReadByteToEndGroupFails:bytes(35)];
[self assertReadByteToEndGroupFails:bytes(35, 8, 1)];
[self assertReadByteToEndGroupFails:bytes(35, 43)];
[self assertReadByteToEndGroupFails:bytes(35, 43, 8, 1)];
// Wrong end group
[self assertReadByteToEndGroupFails:bytes(35, 44)];
[self assertReadByteToEndGroupFails:bytes(35, 8, 1, 44)];
[self assertReadByteToEndGroupFails:bytes(35, 43, 36)];
[self assertReadByteToEndGroupFails:bytes(35, 43, 8, 1, 36)];
[self assertReadByteToEndGroupFails:bytes(35, 43, 44, 44)];
[self assertReadByteToEndGroupFails:bytes(35, 43, 8, 1, 44, 44)];
// This is the same limit as within GPBCodedInputStream.
const NSUInteger kDefaultRecursionLimit = 100;
// That depth parses.
NSData* testData = DataForGroupsOfDepth(kDefaultRecursionLimit);
[self assertReadByteToEndGroup:testData
value:[testData subdataWithRange:NSMakeRange(1, testData.length - 1)]];
// One more level deep fails.
testData = DataForGroupsOfDepth(kDefaultRecursionLimit + 1);
[self assertReadByteToEndGroupFails:testData];
}
@end