322 lines
12 KiB
Objective-C
322 lines
12 KiB
Objective-C
// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#import "GPBTestUtilities.h"
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#import "GPBCodedOutputStream.h"
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#import "GPBCodedInputStream.h"
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#import "GPBUtilities_PackagePrivate.h"
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#import "google/protobuf/Unittest.pbobjc.h"
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@interface CodedOutputStreamTests : GPBTestCase
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@end
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@implementation CodedOutputStreamTests
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- (NSData*)bytes_with_sentinel:(int32_t)unused, ... {
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va_list list;
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va_start(list, unused);
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NSMutableData* values = [NSMutableData dataWithCapacity:0];
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int32_t i;
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while ((i = va_arg(list, int32_t)) != 256) {
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NSAssert(i >= 0 && i < 256, @"");
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uint8_t u = (uint8_t)i;
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[values appendBytes:&u length:1];
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}
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va_end(list);
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return values;
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}
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#define bytes(...) [self bytes_with_sentinel:0, __VA_ARGS__, 256]
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- (void)assertWriteLittleEndian32:(NSData*)data value:(int32_t)value {
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NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
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GPBCodedOutputStream* output =
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[GPBCodedOutputStream streamWithOutputStream:rawOutput];
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[output writeRawLittleEndian32:(int32_t)value];
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[output flush];
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NSData* actual =
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[rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
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XCTAssertEqualObjects(data, actual);
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// Try different block sizes.
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for (int blockSize = 1; blockSize <= 16; blockSize *= 2) {
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rawOutput = [NSOutputStream outputStreamToMemory];
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output = [GPBCodedOutputStream streamWithOutputStream:rawOutput
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bufferSize:blockSize];
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[output writeRawLittleEndian32:(int32_t)value];
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[output flush];
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actual = [rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
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XCTAssertEqualObjects(data, actual);
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}
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}
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- (void)assertWriteLittleEndian64:(NSData*)data value:(int64_t)value {
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NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
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GPBCodedOutputStream* output =
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[GPBCodedOutputStream streamWithOutputStream:rawOutput];
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[output writeRawLittleEndian64:value];
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[output flush];
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NSData* actual =
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[rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
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XCTAssertEqualObjects(data, actual);
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// Try different block sizes.
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for (int blockSize = 1; blockSize <= 16; blockSize *= 2) {
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rawOutput = [NSOutputStream outputStreamToMemory];
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output = [GPBCodedOutputStream streamWithOutputStream:rawOutput
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bufferSize:blockSize];
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[output writeRawLittleEndian64:value];
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[output flush];
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actual = [rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
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XCTAssertEqualObjects(data, actual);
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}
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}
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- (void)assertWriteVarint:(NSData*)data value:(int64_t)value {
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// Only do 32-bit write if the value fits in 32 bits.
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if (GPBLogicalRightShift64(value, 32) == 0) {
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NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
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GPBCodedOutputStream* output =
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[GPBCodedOutputStream streamWithOutputStream:rawOutput];
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[output writeRawVarint32:(int32_t)value];
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[output flush];
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NSData* actual =
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[rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
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XCTAssertEqualObjects(data, actual);
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// Also try computing size.
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XCTAssertEqual(GPBComputeRawVarint32Size((int32_t)value),
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(size_t)data.length);
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}
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{
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NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
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GPBCodedOutputStream* output =
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[GPBCodedOutputStream streamWithOutputStream:rawOutput];
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[output writeRawVarint64:value];
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[output flush];
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NSData* actual =
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[rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
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XCTAssertEqualObjects(data, actual);
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// Also try computing size.
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XCTAssertEqual(GPBComputeRawVarint64Size(value), (size_t)data.length);
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}
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// Try different block sizes.
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for (int blockSize = 1; blockSize <= 16; blockSize *= 2) {
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// Only do 32-bit write if the value fits in 32 bits.
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if (GPBLogicalRightShift64(value, 32) == 0) {
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NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
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GPBCodedOutputStream* output =
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[GPBCodedOutputStream streamWithOutputStream:rawOutput
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bufferSize:blockSize];
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[output writeRawVarint32:(int32_t)value];
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[output flush];
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NSData* actual =
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[rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
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XCTAssertEqualObjects(data, actual);
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}
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{
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NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
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GPBCodedOutputStream* output =
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[GPBCodedOutputStream streamWithOutputStream:rawOutput
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bufferSize:blockSize];
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[output writeRawVarint64:value];
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[output flush];
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NSData* actual =
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[rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
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XCTAssertEqualObjects(data, actual);
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}
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}
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}
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- (void)testWriteVarint1 {
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[self assertWriteVarint:bytes(0x00) value:0];
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}
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- (void)testWriteVarint2 {
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[self assertWriteVarint:bytes(0x01) value:1];
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}
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- (void)testWriteVarint3 {
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[self assertWriteVarint:bytes(0x7f) value:127];
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}
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- (void)testWriteVarint4 {
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// 14882
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[self assertWriteVarint:bytes(0xa2, 0x74) value:(0x22 << 0) | (0x74 << 7)];
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}
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- (void)testWriteVarint5 {
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// 2961488830
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[self assertWriteVarint:bytes(0xbe, 0xf7, 0x92, 0x84, 0x0b)
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value:(0x3e << 0) | (0x77 << 7) | (0x12 << 14) |
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(0x04 << 21) | (0x0bLL << 28)];
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}
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- (void)testWriteVarint6 {
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// 64-bit
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// 7256456126
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[self assertWriteVarint:bytes(0xbe, 0xf7, 0x92, 0x84, 0x1b)
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value:(0x3e << 0) | (0x77 << 7) | (0x12 << 14) |
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(0x04 << 21) | (0x1bLL << 28)];
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}
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- (void)testWriteVarint7 {
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// 41256202580718336
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[self assertWriteVarint:bytes(0x80, 0xe6, 0xeb, 0x9c, 0xc3, 0xc9, 0xa4, 0x49)
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value:(0x00 << 0) | (0x66 << 7) | (0x6b << 14) |
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(0x1c << 21) | (0x43LL << 28) | (0x49LL << 35) |
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(0x24LL << 42) | (0x49LL << 49)];
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}
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- (void)testWriteVarint8 {
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// 11964378330978735131
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[self assertWriteVarint:bytes(0x9b, 0xa8, 0xf9, 0xc2, 0xbb, 0xd6, 0x80, 0x85,
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0xa6, 0x01)
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value:(0x1b << 0) | (0x28 << 7) | (0x79 << 14) |
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(0x42 << 21) | (0x3bLL << 28) | (0x56LL << 35) |
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(0x00LL << 42) | (0x05LL << 49) | (0x26LL << 56) |
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(0x01LL << 63)];
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}
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- (void)testWriteLittleEndian {
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[self assertWriteLittleEndian32:bytes(0x78, 0x56, 0x34, 0x12)
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value:0x12345678];
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[self assertWriteLittleEndian32:bytes(0xf0, 0xde, 0xbc, 0x9a)
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value:0x9abcdef0];
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[self assertWriteLittleEndian64:bytes(0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56,
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0x34, 0x12)
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value:0x123456789abcdef0LL];
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[self assertWriteLittleEndian64:bytes(0x78, 0x56, 0x34, 0x12, 0xf0, 0xde,
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0xbc, 0x9a)
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value:0x9abcdef012345678LL];
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}
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- (void)testEncodeZigZag {
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XCTAssertEqual(0U, GPBEncodeZigZag32(0));
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XCTAssertEqual(1U, GPBEncodeZigZag32(-1));
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XCTAssertEqual(2U, GPBEncodeZigZag32(1));
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XCTAssertEqual(3U, GPBEncodeZigZag32(-2));
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XCTAssertEqual(0x7FFFFFFEU, GPBEncodeZigZag32(0x3FFFFFFF));
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XCTAssertEqual(0x7FFFFFFFU, GPBEncodeZigZag32(0xC0000000));
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XCTAssertEqual(0xFFFFFFFEU, GPBEncodeZigZag32(0x7FFFFFFF));
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XCTAssertEqual(0xFFFFFFFFU, GPBEncodeZigZag32(0x80000000));
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XCTAssertEqual(0ULL, GPBEncodeZigZag64(0));
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XCTAssertEqual(1ULL, GPBEncodeZigZag64(-1));
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XCTAssertEqual(2ULL, GPBEncodeZigZag64(1));
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XCTAssertEqual(3ULL, GPBEncodeZigZag64(-2));
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XCTAssertEqual(0x000000007FFFFFFEULL,
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GPBEncodeZigZag64(0x000000003FFFFFFFLL));
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XCTAssertEqual(0x000000007FFFFFFFULL,
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GPBEncodeZigZag64(0xFFFFFFFFC0000000LL));
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XCTAssertEqual(0x00000000FFFFFFFEULL,
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GPBEncodeZigZag64(0x000000007FFFFFFFLL));
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XCTAssertEqual(0x00000000FFFFFFFFULL,
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GPBEncodeZigZag64(0xFFFFFFFF80000000LL));
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XCTAssertEqual(0xFFFFFFFFFFFFFFFEULL,
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GPBEncodeZigZag64(0x7FFFFFFFFFFFFFFFLL));
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XCTAssertEqual(0xFFFFFFFFFFFFFFFFULL,
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GPBEncodeZigZag64(0x8000000000000000LL));
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// Some easier-to-verify round-trip tests. The inputs (other than 0, 1, -1)
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// were chosen semi-randomly via keyboard bashing.
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XCTAssertEqual(0U, GPBEncodeZigZag32(GPBDecodeZigZag32(0)));
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XCTAssertEqual(1U, GPBEncodeZigZag32(GPBDecodeZigZag32(1)));
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XCTAssertEqual(-1U, GPBEncodeZigZag32(GPBDecodeZigZag32(-1)));
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XCTAssertEqual(14927U, GPBEncodeZigZag32(GPBDecodeZigZag32(14927)));
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XCTAssertEqual(-3612U, GPBEncodeZigZag32(GPBDecodeZigZag32(-3612)));
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XCTAssertEqual(0ULL, GPBEncodeZigZag64(GPBDecodeZigZag64(0)));
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XCTAssertEqual(1ULL, GPBEncodeZigZag64(GPBDecodeZigZag64(1)));
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XCTAssertEqual(-1ULL, GPBEncodeZigZag64(GPBDecodeZigZag64(-1)));
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XCTAssertEqual(14927ULL, GPBEncodeZigZag64(GPBDecodeZigZag64(14927)));
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XCTAssertEqual(-3612ULL, GPBEncodeZigZag64(GPBDecodeZigZag64(-3612)));
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XCTAssertEqual(856912304801416ULL,
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GPBEncodeZigZag64(GPBDecodeZigZag64(856912304801416LL)));
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XCTAssertEqual(-75123905439571256ULL,
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GPBEncodeZigZag64(GPBDecodeZigZag64(-75123905439571256LL)));
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}
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- (void)testWriteWholeMessage {
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// Not kGPBDefaultRepeatCount because we are comparing to a golden master file
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// that was generated with 2.
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TestAllTypes* message = [self allSetRepeatedCount:2];
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NSData* rawBytes = message.data;
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NSData* goldenData =
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[self getDataFileNamed:@"golden_message" dataToWrite:rawBytes];
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XCTAssertEqualObjects(rawBytes, goldenData);
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// Try different block sizes.
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for (int blockSize = 1; blockSize < 256; blockSize *= 2) {
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NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
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GPBCodedOutputStream* output =
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[GPBCodedOutputStream streamWithOutputStream:rawOutput
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bufferSize:blockSize];
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[message writeToCodedOutputStream:output];
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[output flush];
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NSData* actual =
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[rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
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XCTAssertEqualObjects(rawBytes, actual);
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}
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// Not kGPBDefaultRepeatCount because we are comparing to a golden master file
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// that was generated with 2.
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TestAllExtensions* extensions = [self allExtensionsSetRepeatedCount:2];
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rawBytes = extensions.data;
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goldenData = [self getDataFileNamed:@"golden_packed_fields_message"
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dataToWrite:rawBytes];
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XCTAssertEqualObjects(rawBytes, goldenData);
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}
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@end
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