/core/externals/update-engine/externals/google-toolbox-for-mac/Foundation/GTMNSData+zlibTest.m
http://macfuse.googlecode.com/ · Objective C · 526 lines · 426 code · 41 blank · 59 comment · 11 complexity · bab536d0d57d3e9c02972132f3e9f2a1 MD5 · raw file
- //
- // GTMNSData+zlibTest.m
- //
- // Copyright 2007-2008 Google Inc.
- //
- // Licensed under the Apache License, Version 2.0 (the "License"); you may not
- // use this file except in compliance with the License. You may obtain a copy
- // of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- // License for the specific language governing permissions and limitations under
- // the License.
- //
- #import "GTMSenTestCase.h"
- #import "GTMUnitTestDevLog.h"
- #import "GTMNSData+zlib.h"
- #import <stdlib.h> // for randiom/srandomdev
- #import <zlib.h>
- @interface GTMNSData_zlibTest : GTMTestCase
- @end
- // NOTE: we don't need to test the actually compressor/inflation (we're using
- // zlib, it works), we just need to test our wrapper. So we can use canned
- // data, etc. (and yes, when using random data, things once failed because
- // we generated a random block of data that was valid compressed data?!)
- static unsigned char randomDataLarge[] = {
- // openssl rand -rand /dev/random 512 | xxd -i
- 0xe1, 0xa6, 0xe2, 0xa2, 0x0b, 0xf7, 0x8d, 0x6b, 0x31, 0xfe, 0xaa, 0x64,
- 0x50, 0xbe, 0x52, 0x7e, 0x83, 0x74, 0x00, 0x8f, 0x62, 0x96, 0xc7, 0xe9,
- 0x20, 0x59, 0x78, 0xc6, 0xea, 0x10, 0xd5, 0xdb, 0x3f, 0x6b, 0x13, 0xd9,
- 0x44, 0x18, 0x24, 0x17, 0x63, 0xc8, 0x74, 0xa5, 0x37, 0x6c, 0x9c, 0x00,
- 0xe5, 0xcf, 0x0a, 0xdf, 0xb9, 0x66, 0xb1, 0xbd, 0x04, 0x8f, 0x55, 0x9e,
- 0xb0, 0x24, 0x4e, 0xf0, 0xc4, 0x69, 0x2c, 0x1f, 0x63, 0x9f, 0x41, 0xa8,
- 0x89, 0x9b, 0x98, 0x00, 0xb6, 0x78, 0xf7, 0xe4, 0x4c, 0x72, 0x14, 0x84,
- 0xaa, 0x3d, 0xc1, 0x42, 0x9f, 0x12, 0x85, 0xdd, 0x16, 0x8b, 0x8f, 0x67,
- 0xe0, 0x26, 0x5b, 0x5e, 0xaa, 0xe7, 0xd3, 0x67, 0xfe, 0x21, 0x77, 0xa6,
- 0x52, 0xde, 0x33, 0x8b, 0x96, 0x49, 0x6a, 0xd6, 0x58, 0x58, 0x36, 0x00,
- 0x23, 0xd2, 0x45, 0x13, 0x9f, 0xd9, 0xc7, 0x2d, 0x55, 0x12, 0xb4, 0xfe,
- 0x53, 0x27, 0x1f, 0x14, 0x71, 0x9b, 0x7e, 0xcc, 0x5e, 0x8c, 0x59, 0xef,
- 0x80, 0xac, 0x89, 0xf4, 0x45, 0x8d, 0x98, 0x6d, 0x97, 0xfd, 0x53, 0x5f,
- 0x19, 0xd6, 0x11, 0xf7, 0xcb, 0x5d, 0xca, 0xab, 0xe1, 0x01, 0xf1, 0xe9,
- 0x1f, 0x1f, 0xf3, 0x53, 0x76, 0xa2, 0x59, 0x8e, 0xb3, 0x91, 0xff, 0xe8,
- 0x1b, 0xc0, 0xc0, 0xda, 0xdd, 0x93, 0xb5, 0x9d, 0x62, 0x13, 0xb8, 0x07,
- 0xf2, 0xf5, 0xb9, 0x4b, 0xe1, 0x09, 0xed, 0xdb, 0xe6, 0xd9, 0x2d, 0xc4,
- 0x0d, 0xb6, 0xbd, 0xfc, 0xdb, 0x5c, 0xcc, 0xf6, 0x53, 0x4e, 0x01, 0xa4,
- 0x03, 0x95, 0x4a, 0xa4, 0xaa, 0x4f, 0x45, 0xaf, 0xbf, 0xf1, 0x7e, 0x60,
- 0x1d, 0x86, 0x93, 0x65, 0x7b, 0x24, 0x0c, 0x09, 0xe0, 0xd1, 0xd8, 0x60,
- 0xd9, 0xd9, 0x55, 0x2a, 0xec, 0xd5, 0xdc, 0xd0, 0xc6, 0x5e, 0x2c, 0x22,
- 0xf5, 0x19, 0x0b, 0xc3, 0xa1, 0x38, 0x11, 0x67, 0x6f, 0x6c, 0x0e, 0x34,
- 0x44, 0x83, 0xee, 0xd3, 0xf2, 0x4b, 0x7b, 0x03, 0x68, 0xfe, 0xc5, 0x76,
- 0xb2, 0x2e, 0x26, 0xeb, 0x1f, 0x66, 0x02, 0xa4, 0xd9, 0xda, 0x28, 0x3a,
- 0xc3, 0x94, 0x03, 0xe8, 0x29, 0x7e, 0xfe, 0x3d, 0xc8, 0xc1, 0x0a, 0x74,
- 0xc7, 0xaf, 0xa6, 0x84, 0x86, 0x85, 0xc3, 0x8c, 0x00, 0x38, 0xd4, 0xb5,
- 0xb2, 0xe0, 0xf0, 0xc4, 0x8d, 0x10, 0x0d, 0xf1, 0xcd, 0x05, 0xdb, 0xd0,
- 0xcf, 0x17, 0x4f, 0xa8, 0xe5, 0xf0, 0x53, 0x55, 0x62, 0xc7, 0x55, 0xe5,
- 0xbe, 0x18, 0x2f, 0xda, 0x48, 0xf1, 0xaa, 0x85, 0x46, 0x80, 0x15, 0x70,
- 0x82, 0xd2, 0xa6, 0xb0, 0x3d, 0x31, 0xb5, 0xcc, 0x23, 0x95, 0x5e, 0x15,
- 0x35, 0x32, 0xd0, 0x86, 0xd1, 0x6e, 0x2d, 0xc0, 0xfe, 0x45, 0xae, 0x28,
- 0x24, 0xa7, 0x14, 0xf4, 0xe9, 0xb5, 0x6f, 0xac, 0x25, 0xf9, 0x88, 0xf6,
- 0x60, 0x5d, 0x6b, 0x5c, 0xf2, 0x38, 0xe8, 0xdc, 0xbd, 0xa6, 0x13, 0xc0,
- 0xa4, 0xc8, 0xe9, 0x7a, 0xc6, 0xb6, 0x88, 0x26, 0x98, 0x9f, 0xe3, 0x9a,
- 0xd9, 0x5b, 0xd4, 0xd0, 0x02, 0x1f, 0x55, 0x30, 0xbe, 0xde, 0x9c, 0xd1,
- 0x53, 0x93, 0x72, 0xe6, 0x19, 0x79, 0xe9, 0xf1, 0x70, 0x78, 0x92, 0x31,
- 0xf6, 0x17, 0xc0, 0xdd, 0x99, 0xc8, 0x97, 0x67, 0xdc, 0xf6, 0x67, 0x6b,
- 0x9b, 0x1c, 0x90, 0xea, 0x1a, 0x9e, 0x26, 0x68, 0xc2, 0x13, 0x94, 0x3a,
- 0x3e, 0x73, 0x61, 0x4e, 0x37, 0xa8, 0xa1, 0xfa, 0xf8, 0x22, 0xdd, 0x20,
- 0x40, 0xc6, 0x52, 0x27, 0x47, 0x1a, 0x79, 0xfa, 0x40, 0xa6, 0x62, 0x6b,
- 0xe6, 0xc7, 0x67, 0xb7, 0xa8, 0x2d, 0xd1, 0x9f, 0x17, 0xb8, 0x77, 0x5e,
- 0x97, 0x1e, 0x92, 0xd7, 0xd2, 0x25, 0x04, 0x92, 0xf9, 0x41, 0x70, 0x93,
- 0xe1, 0x13, 0x07, 0x94, 0x8e, 0x0b, 0x82, 0x98
- };
- static unsigned char randomDataSmall[] = {
- // openssl rand -rand /dev/random 24 | xxd -i
- 0xd1, 0xec, 0x35, 0xc3, 0xa0, 0x4c, 0x73, 0x37, 0x2f, 0x5a, 0x12, 0x44,
- 0xee, 0xe4, 0x22, 0x07, 0x29, 0xa8, 0x4a, 0xde, 0xc8, 0xbb, 0xe7, 0xdb
- };
- static BOOL HasGzipHeader(NSData *data) {
- // very simple check
- const unsigned char *bytes = [data bytes];
- return ([data length] > 2) &&
- ((bytes[0] == 0x1f) && (bytes[1] == 0x8b));
- }
- @implementation GTMNSData_zlibTest
- - (void)testBoundryValues {
- // build some test data
- NSData *data = [NSData dataWithBytes:randomDataLarge
- length:sizeof(randomDataLarge)];
- STAssertNotNil(data, @"failed to alloc data block");
- // bogus args to start
- STAssertNil([NSData gtm_dataByDeflatingData:nil], nil);
- STAssertNil([NSData gtm_dataByDeflatingBytes:nil length:666], nil);
- STAssertNil([NSData gtm_dataByDeflatingBytes:[data bytes] length:0], nil);
- STAssertNil([NSData gtm_dataByGzippingData:nil], nil);
- STAssertNil([NSData gtm_dataByGzippingBytes:nil length:666], nil);
- STAssertNil([NSData gtm_dataByGzippingBytes:[data bytes] length:0], nil);
- STAssertNil([NSData gtm_dataByInflatingData:nil], nil);
- STAssertNil([NSData gtm_dataByInflatingBytes:nil length:666], nil);
- STAssertNil([NSData gtm_dataByInflatingBytes:[data bytes] length:0], nil);
- STAssertNil([NSData gtm_dataByRawDeflatingData:nil], nil);
- STAssertNil([NSData gtm_dataByRawDeflatingBytes:nil length:666], nil);
- STAssertNil([NSData gtm_dataByRawDeflatingBytes:[data bytes] length:0], nil);
- STAssertNil([NSData gtm_dataByRawInflatingData:nil], nil);
- STAssertNil([NSData gtm_dataByRawInflatingBytes:nil length:666], nil);
- STAssertNil([NSData gtm_dataByRawInflatingBytes:[data bytes] length:0], nil);
- // test deflate w/ compression levels out of range
- NSData *deflated = [NSData gtm_dataByDeflatingData:data
- compressionLevel:-4];
- STAssertNotNil(deflated, nil);
- STAssertFalse(HasGzipHeader(deflated), nil);
- NSData *dataPrime = [NSData gtm_dataByInflatingData:deflated];
- STAssertNotNil(dataPrime, nil);
- STAssertEqualObjects(data, dataPrime, nil);
- deflated = [NSData gtm_dataByDeflatingData:data
- compressionLevel:20];
- STAssertNotNil(deflated, nil);
- STAssertFalse(HasGzipHeader(deflated), nil);
- dataPrime = [NSData gtm_dataByInflatingData:deflated];
- STAssertNotNil(dataPrime, nil);
- STAssertEqualObjects(data, dataPrime, nil);
- // test gzip w/ compression levels out of range
- NSData *gzipped = [NSData gtm_dataByGzippingData:data
- compressionLevel:-4];
- STAssertNotNil(gzipped, nil);
- STAssertTrue(HasGzipHeader(gzipped), nil);
- dataPrime = [NSData gtm_dataByInflatingData:gzipped];
- STAssertNotNil(dataPrime, nil);
- STAssertEqualObjects(data, dataPrime, nil);
- gzipped = [NSData gtm_dataByGzippingData:data
- compressionLevel:20];
- STAssertNotNil(gzipped, nil);
- STAssertTrue(HasGzipHeader(gzipped), nil);
- dataPrime = [NSData gtm_dataByInflatingData:gzipped];
- STAssertNotNil(dataPrime, nil);
- STAssertEqualObjects(data, dataPrime, nil);
- // test raw deflate w/ compression levels out of range
- NSData *rawDeflated = [NSData gtm_dataByRawDeflatingData:data
- compressionLevel:-4];
- STAssertNotNil(rawDeflated, nil);
- STAssertFalse(HasGzipHeader(rawDeflated), nil);
- dataPrime = [NSData gtm_dataByRawInflatingData:rawDeflated];
- STAssertNotNil(dataPrime, nil);
- STAssertEqualObjects(data, dataPrime, nil);
- rawDeflated = [NSData gtm_dataByRawDeflatingData:data
- compressionLevel:20];
- STAssertNotNil(rawDeflated, nil);
- STAssertFalse(HasGzipHeader(rawDeflated), nil);
- dataPrime = [NSData gtm_dataByRawInflatingData:rawDeflated];
- STAssertNotNil(dataPrime, nil);
- STAssertEqualObjects(data, dataPrime, nil);
- // test non-compressed data data itself
- [GTMUnitTestDevLog expectString:@"Error trying to inflate some of the "
- @"payload, error -3: incorrect header check"];
- STAssertNil([NSData gtm_dataByInflatingData:data], nil);
- // test deflated data runs that end before they are done
- [GTMUnitTestDevLog expect:([deflated length] / 11) + 1
- casesOfString:@"Error trying to inflate some of the payload, "
- @"error -5: (null)"];
- for (NSUInteger x = 1 ; x < [deflated length] ; x += 11) {
- STAssertNil([NSData gtm_dataByInflatingBytes:[deflated bytes]
- length:x], nil);
- }
- // test gzipped data runs that end before they are done
- [GTMUnitTestDevLog expect:([gzipped length] / 11) + 1
- casesOfString:@"Error trying to inflate some of the payload, "
- @"error -5: (null)"];
- for (NSUInteger x = 1 ; x < [gzipped length] ; x += 11) {
- STAssertNil([NSData gtm_dataByInflatingBytes:[gzipped bytes]
- length:x], nil);
- }
- // test raw deflated data runs that end before they are done
- [GTMUnitTestDevLog expectString:@"Error trying to inflate some of the "
- @"payload, error -5: (null)"];
- [GTMUnitTestDevLog expect:([rawDeflated length] / 11) - 1
- casesOfString:@"Error trying to inflate some of the payload, "
- @"error -3: incorrect header check"];
- for (NSUInteger x = 1 ; x < [rawDeflated length] ; x += 11) {
- STAssertNil([NSData gtm_dataByInflatingBytes:[rawDeflated bytes]
- length:x], nil);
- }
- // test extra data before the deflated/gzipped data (just to make sure we
- // don't seek to the "real" data)
- NSMutableData *prefixedDeflated =
- [NSMutableData dataWithBytes:randomDataSmall length:sizeof(randomDataSmall)];
- STAssertNotNil(prefixedDeflated, @"failed to alloc data block");
- [prefixedDeflated appendData:deflated];
- [GTMUnitTestDevLog expectString:@"Error trying to inflate some of the "
- @"payload, error -3: incorrect header check"];
- STAssertNil([NSData gtm_dataByInflatingData:prefixedDeflated], nil);
- [GTMUnitTestDevLog expectString:@"Error trying to inflate some of the "
- @"payload, error -3: incorrect header check"];
- STAssertNil([NSData gtm_dataByInflatingBytes:[prefixedDeflated bytes]
- length:[prefixedDeflated length]],
- nil);
- NSMutableData *prefixedGzipped =
- [NSMutableData dataWithBytes:randomDataSmall length:sizeof(randomDataSmall)];
- STAssertNotNil(prefixedDeflated, @"failed to alloc data block");
- [prefixedGzipped appendData:gzipped];
- [GTMUnitTestDevLog expectString:@"Error trying to inflate some of the "
- @"payload, error -3: incorrect header check"];
- STAssertNil([NSData gtm_dataByInflatingData:prefixedGzipped], nil);
- [GTMUnitTestDevLog expectString:@"Error trying to inflate some of the "
- @"payload, error -3: incorrect header check"];
- STAssertNil([NSData gtm_dataByInflatingBytes:[prefixedGzipped bytes]
- length:[prefixedGzipped length]],
- nil);
- NSMutableData *prefixedRawDeflated =
- [NSMutableData dataWithBytes:randomDataSmall length:sizeof(randomDataSmall)];
- STAssertNotNil(prefixedRawDeflated, @"failed to alloc data block");
- [prefixedRawDeflated appendData:rawDeflated];
- [GTMUnitTestDevLog expectString:@"Error trying to inflate some of the "
- @"payload, error -3: invalid stored block lengths"];
- STAssertNil([NSData gtm_dataByRawInflatingData:prefixedRawDeflated], nil);
- [GTMUnitTestDevLog expectString:@"Error trying to inflate some of the "
- @"payload, error -3: invalid stored block lengths"];
- STAssertNil([NSData gtm_dataByRawInflatingBytes:[prefixedRawDeflated bytes]
- length:[prefixedRawDeflated length]],
- nil);
- // test extra data after the deflated/gzipped data (just to make sure we
- // don't ignore some of the data)
- NSMutableData *suffixedDeflated = [NSMutableData data];
- STAssertNotNil(suffixedDeflated, @"failed to alloc data block");
- [suffixedDeflated appendData:deflated];
- [suffixedDeflated appendBytes:[data bytes] length:20];
- [GTMUnitTestDevLog expectString:@"thought we finished inflate w/o using "
- @"all input, 20 bytes left"];
- STAssertNil([NSData gtm_dataByInflatingData:suffixedDeflated], nil);
- [GTMUnitTestDevLog expectString:@"thought we finished inflate w/o using "
- @"all input, 20 bytes left"];
- STAssertNil([NSData gtm_dataByInflatingBytes:[suffixedDeflated bytes]
- length:[suffixedDeflated length]],
- nil);
- NSMutableData *suffixedGZipped = [NSMutableData data];
- STAssertNotNil(suffixedGZipped, @"failed to alloc data block");
- [suffixedGZipped appendData:gzipped];
- [suffixedGZipped appendBytes:[data bytes] length:20];
- [GTMUnitTestDevLog expectString:@"thought we finished inflate w/o using "
- @"all input, 20 bytes left"];
- STAssertNil([NSData gtm_dataByInflatingData:suffixedGZipped], nil);
- [GTMUnitTestDevLog expectString:@"thought we finished inflate w/o using "
- @"all input, 20 bytes left"];
- STAssertNil([NSData gtm_dataByInflatingBytes:[suffixedGZipped bytes]
- length:[suffixedGZipped length]],
- nil);
- NSMutableData *suffixedRawDeflated = [NSMutableData data];
- STAssertNotNil(suffixedRawDeflated, @"failed to alloc data block");
- [suffixedRawDeflated appendData:rawDeflated];
- [suffixedRawDeflated appendBytes:[data bytes] length:20];
- [GTMUnitTestDevLog expectString:@"thought we finished inflate w/o using "
- @"all input, 20 bytes left"];
- STAssertNil([NSData gtm_dataByRawInflatingData:suffixedRawDeflated], nil);
- [GTMUnitTestDevLog expectString:@"thought we finished inflate w/o using "
- @"all input, 20 bytes left"];
- STAssertNil([NSData gtm_dataByRawInflatingBytes:[suffixedRawDeflated bytes]
- length:[suffixedRawDeflated length]],
- nil);
- }
- - (void)testInflateDeflate {
- NSData *data = [NSData dataWithBytes:randomDataLarge
- length:sizeof(randomDataLarge)];
- STAssertNotNil(data, @"failed to alloc data block");
- // w/ *Bytes apis, default level
- NSData *deflated = [NSData gtm_dataByDeflatingBytes:[data bytes]
- length:[data length]];
- STAssertNotNil(deflated, @"failed to deflate data block");
- STAssertGreaterThan([deflated length],
- (NSUInteger)0, @"failed to deflate data block");
- STAssertFalse(HasGzipHeader(deflated), @"has gzip header on zlib data");
- NSData *dataPrime = [NSData gtm_dataByInflatingBytes:[deflated bytes]
- length:[deflated length]];
- STAssertNotNil(dataPrime, @"failed to inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to inflate data block");
- STAssertEqualObjects(data,
- dataPrime, @"failed to round trip via *Bytes apis");
- // w/ *Data apis, default level
- deflated = [NSData gtm_dataByDeflatingData:data];
- STAssertNotNil(deflated, @"failed to deflate data block");
- STAssertGreaterThan([deflated length],
- (NSUInteger)0, @"failed to deflate data block");
- STAssertFalse(HasGzipHeader(deflated), @"has gzip header on zlib data");
- dataPrime = [NSData gtm_dataByInflatingData:deflated];
- STAssertNotNil(dataPrime, @"failed to inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to inflate data block");
- STAssertEqualObjects(data,
- dataPrime, @"failed to round trip via *Data apis");
- // loop over the compression levels
- for (int level = 1 ; level <= 9 ; ++level) {
- // w/ *Bytes apis, using our level
- deflated = [NSData gtm_dataByDeflatingBytes:[data bytes]
- length:[data length]
- compressionLevel:level];
- STAssertNotNil(deflated, @"failed to deflate data block");
- STAssertGreaterThan([deflated length],
- (NSUInteger)0, @"failed to deflate data block");
- STAssertFalse(HasGzipHeader(deflated), @"has gzip header on zlib data");
- dataPrime = [NSData gtm_dataByInflatingBytes:[deflated bytes]
- length:[deflated length]];
- STAssertNotNil(dataPrime, @"failed to inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to inflate data block");
- STAssertEqualObjects(data,
- dataPrime, @"failed to round trip via *Bytes apis");
- // w/ *Data apis, using our level
- deflated = [NSData gtm_dataByDeflatingData:data compressionLevel:level];
- STAssertNotNil(deflated, @"failed to deflate data block");
- STAssertGreaterThan([deflated length],
- (NSUInteger)0, @"failed to deflate data block");
- STAssertFalse(HasGzipHeader(deflated), @"has gzip header on zlib data");
- dataPrime = [NSData gtm_dataByInflatingData:deflated];
- STAssertNotNil(dataPrime, @"failed to inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to inflate data block");
- STAssertEqualObjects(data,
- dataPrime, @"failed to round trip via *Data apis");
- }
- }
- - (void)testInflateGzip {
- NSData *data = [NSData dataWithBytes:randomDataLarge
- length:sizeof(randomDataLarge)];
- STAssertNotNil(data, @"failed to alloc data block");
- // w/ *Bytes apis, default level
- NSData *gzipped = [NSData gtm_dataByGzippingBytes:[data bytes]
- length:[data length]];
- STAssertNotNil(gzipped, @"failed to gzip data block");
- STAssertGreaterThan([gzipped length],
- (NSUInteger)0, @"failed to gzip data block");
- STAssertTrue(HasGzipHeader(gzipped),
- @"doesn't have gzip header on gzipped data");
- NSData *dataPrime = [NSData gtm_dataByInflatingBytes:[gzipped bytes]
- length:[gzipped length]];
- STAssertNotNil(dataPrime, @"failed to inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to inflate data block");
- STAssertEqualObjects(data,
- dataPrime, @"failed to round trip via *Bytes apis");
- // w/ *Data apis, default level
- gzipped = [NSData gtm_dataByGzippingData:data];
- STAssertNotNil(gzipped, @"failed to gzip data block");
- STAssertGreaterThan([gzipped length],
- (NSUInteger)0, @"failed to gzip data block");
- STAssertTrue(HasGzipHeader(gzipped),
- @"doesn't have gzip header on gzipped data");
- dataPrime = [NSData gtm_dataByInflatingData:gzipped];
- STAssertNotNil(dataPrime, @"failed to inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to inflate data block");
- STAssertEqualObjects(data, dataPrime,
- @"failed to round trip via *Data apis");
- // loop over the compression levels
- for (int level = 1 ; level <= 9 ; ++level) {
- // w/ *Bytes apis, using our level
- gzipped = [NSData gtm_dataByGzippingBytes:[data bytes]
- length:[data length]
- compressionLevel:level];
- STAssertNotNil(gzipped, @"failed to gzip data block");
- STAssertGreaterThan([gzipped length],
- (NSUInteger)0, @"failed to gzip data block");
- STAssertTrue(HasGzipHeader(gzipped),
- @"doesn't have gzip header on gzipped data");
- dataPrime = [NSData gtm_dataByInflatingBytes:[gzipped bytes]
- length:[gzipped length]];
- STAssertNotNil(dataPrime, @"failed to inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to inflate data block");
- STAssertEqualObjects(data, dataPrime,
- @"failed to round trip via *Bytes apis");
- // w/ *Data apis, using our level
- gzipped = [NSData gtm_dataByGzippingData:data compressionLevel:level];
- STAssertNotNil(gzipped, @"failed to gzip data block");
- STAssertGreaterThan([gzipped length],
- (NSUInteger)0, @"failed to gzip data block");
- STAssertTrue(HasGzipHeader(gzipped),
- @"doesn't have gzip header on gzipped data");
- dataPrime = [NSData gtm_dataByInflatingData:gzipped];
- STAssertNotNil(dataPrime, @"failed to inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to inflate data block");
- STAssertEqualObjects(data,
- dataPrime, @"failed to round trip via *Data apis");
- }
- }
- - (void)testRawtInflateRawDeflate {
- NSData *data = [NSData dataWithBytes:randomDataLarge
- length:sizeof(randomDataLarge)];
- STAssertNotNil(data, @"failed to alloc data block");
- // w/ *Bytes apis, default level
- NSData *rawDeflated = [NSData gtm_dataByRawDeflatingBytes:[data bytes]
- length:[data length]];
- STAssertNotNil(rawDeflated, @"failed to raw deflate data block");
- STAssertGreaterThan([rawDeflated length],
- (NSUInteger)0, @"failed to raw deflate data block");
- STAssertFalse(HasGzipHeader(rawDeflated), @"has gzip header on raw data");
- NSData *dataPrime = [NSData gtm_dataByRawInflatingBytes:[rawDeflated bytes]
- length:[rawDeflated length]];
- STAssertNotNil(dataPrime, @"failed to raw inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to raw inflate data block");
- STAssertEqualObjects(data,
- dataPrime, @"failed to round trip via *Bytes apis");
- // w/ *Data apis, default level
- rawDeflated = [NSData gtm_dataByRawDeflatingData:data];
- STAssertNotNil(rawDeflated, @"failed to raw deflate data block");
- STAssertGreaterThan([rawDeflated length],
- (NSUInteger)0, @"failed to raw deflate data block");
- STAssertFalse(HasGzipHeader(rawDeflated), @"has gzip header on raw data");
- dataPrime = [NSData gtm_dataByRawInflatingData:rawDeflated];
- STAssertNotNil(dataPrime, @"failed to raw inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to raw inflate data block");
- STAssertEqualObjects(data,
- dataPrime, @"failed to round trip via *Data apis");
- // loop over the compression levels
- for (int level = 1 ; level <= 9 ; ++level) {
- // w/ *Bytes apis, using our level
- rawDeflated = [NSData gtm_dataByRawDeflatingBytes:[data bytes]
- length:[data length]
- compressionLevel:level];
- STAssertNotNil(rawDeflated, @"failed to rawDeflate data block");
- STAssertGreaterThan([rawDeflated length],
- (NSUInteger)0, @"failed to raw deflate data block");
- STAssertFalse(HasGzipHeader(rawDeflated), @"has gzip header on raw data");
- dataPrime = [NSData gtm_dataByRawInflatingBytes:[rawDeflated bytes]
- length:[rawDeflated length]];
- STAssertNotNil(dataPrime, @"failed to raw inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to raw inflate data block");
- STAssertEqualObjects(data,
- dataPrime, @"failed to round trip via *Bytes apis");
- // w/ *Data apis, using our level
- rawDeflated = [NSData gtm_dataByRawDeflatingData:data
- compressionLevel:level];
- STAssertNotNil(rawDeflated, @"failed to deflate data block");
- STAssertGreaterThan([rawDeflated length],
- (NSUInteger)0, @"failed to raw deflate data block");
- STAssertFalse(HasGzipHeader(rawDeflated), @"has gzip header on raw data");
- dataPrime = [NSData gtm_dataByRawInflatingData:rawDeflated];
- STAssertNotNil(dataPrime, @"failed to raw inflate data block");
- STAssertGreaterThan([dataPrime length],
- (NSUInteger)0, @"failed to raw inflate data block");
- STAssertEqualObjects(data,
- dataPrime, @"failed to round trip via *Data apis");
- }
- }
- - (void)testLargeData {
- // Generate some large data out of the random chunk by xoring over it
- // to make sure it changes and isn't too repeated.
- NSData *data = [NSData dataWithBytes:randomDataLarge
- length:sizeof(randomDataLarge)];
- STAssertNotNil(data, @"failed to alloc data block");
- const uint8_t *dataBytes = [data bytes];
- NSMutableData *scratch = [NSMutableData dataWithLength:[data length]];
- STAssertNotNil(scratch, @"failed to alloc data block");
- uint8_t *scratchBytes = [scratch mutableBytes];
- NSMutableData *input = [NSMutableData dataWithCapacity:200 * [data length]];
- for (NSUInteger i = 0; i < 200; ++i) {
- for (NSUInteger j = 0; j < [data length]; ++j) {
- scratchBytes[j] = dataBytes[j] ^ i;
- }
- [input appendData:scratch];
- }
- // The internal buffer size for GTM's deflate/inflate is 1024.
- NSUInteger internalBufferSize = 1024;
- // Should deflate to more then one buffer size to make sure the internal loop
- // is working.
- NSData *compressed = [NSData gtm_dataByDeflatingData:input
- compressionLevel:9];
- STAssertNotNil(compressed, @"failed to deflate");
- STAssertGreaterThan([compressed length], internalBufferSize,
- @"should have been more then %d bytes",
- (int)internalBufferSize);
- // Should inflate to more then one buffer size to make sure the internal loop
- // is working.
- NSData *uncompressed = [NSData gtm_dataByInflatingData:compressed];
- STAssertNotNil(uncompressed, @"fail to inflate");
- STAssertGreaterThan([uncompressed length], internalBufferSize,
- @"should have been more then %d bytes",
- (int)internalBufferSize);
- STAssertEqualObjects(uncompressed, input,
- @"didn't get the same thing back");
- }
- @end