diff options
Diffstat (limited to 'Foundation/GTMNSData+zlibTest.m')
| -rw-r--r-- | Foundation/GTMNSData+zlibTest.m | 382 |
1 files changed, 196 insertions, 186 deletions
diff --git a/Foundation/GTMNSData+zlibTest.m b/Foundation/GTMNSData+zlibTest.m index 1b6264c..0d86886 100644 --- a/Foundation/GTMNSData+zlibTest.m +++ b/Foundation/GTMNSData+zlibTest.m @@ -25,13 +25,64 @@ @interface GTMNSData_zlibTest : GTMTestCase @end - -static void FillWithRandom(char *data, unsigned long len) { - char *max = data + len; - for ( ; data < max ; ++data) { - *data = random() & 0xFF; - } -} +// 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 @@ -43,20 +94,11 @@ static BOOL HasGzipHeader(NSData *data) { @implementation GTMNSData_zlibTest -- (void)setUp { - // seed random from /dev/random - srandomdev(); -} - - (void)testBoundryValues { - NSAutoreleasePool *localPool = [[NSAutoreleasePool alloc] init]; - STAssertNotNil(localPool, @"failed to alloc local pool"); - // build some test data - NSMutableData *data = [NSMutableData data]; + NSData *data = [NSData dataWithBytes:randomDataLarge + length:sizeof(randomDataLarge)]; STAssertNotNil(data, @"failed to alloc data block"); - [data setLength:512]; - FillWithRandom([data mutableBytes], [data length]); // bogus args to start STAssertNil([NSData gtm_dataByDeflatingData:nil], nil); @@ -107,29 +149,28 @@ static BOOL HasGzipHeader(NSData *data) { STAssertNil([NSData gtm_dataByInflatingData:data], nil); // test deflated data runs that end before they are done - [GTMUnitTestDevLog expect:[deflated length] - 1 + [GTMUnitTestDevLog expect:([deflated length] / 11) + 1 casesOfString:@"Error trying to inflate some of the payload, " "error -5"]; - for (NSUInteger x = 1 ; x < [deflated length] ; ++x) { + 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] - 1 + [GTMUnitTestDevLog expect:([gzipped length] / 11) + 1 casesOfString:@"Error trying to inflate some of the payload, " "error -5"]; - for (NSUInteger x = 1 ; x < [gzipped length] ; ++x) { + for (NSUInteger x = 1 ; x < [gzipped length] ; x += 11) { STAssertNil([NSData gtm_dataByInflatingBytes:[gzipped 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 data]; + NSMutableData *prefixedDeflated = + [NSMutableData dataWithBytes:randomDataSmall length:sizeof(randomDataSmall)]; STAssertNotNil(prefixedDeflated, @"failed to alloc data block"); - [prefixedDeflated setLength:20]; - FillWithRandom([prefixedDeflated mutableBytes], [prefixedDeflated length]); [prefixedDeflated appendData:deflated]; [GTMUnitTestDevLog expectString:@"Error trying to inflate some of the " "payload, error -3"]; @@ -139,10 +180,9 @@ static BOOL HasGzipHeader(NSData *data) { STAssertNil([NSData gtm_dataByInflatingBytes:[prefixedDeflated bytes] length:[prefixedDeflated length]], nil); - NSMutableData *prefixedGzipped = [NSMutableData data]; + NSMutableData *prefixedGzipped = + [NSMutableData dataWithBytes:randomDataSmall length:sizeof(randomDataSmall)]; STAssertNotNil(prefixedDeflated, @"failed to alloc data block"); - [prefixedGzipped setLength:20]; - FillWithRandom([prefixedGzipped mutableBytes], [prefixedGzipped length]); [prefixedGzipped appendData:gzipped]; [GTMUnitTestDevLog expectString:@"Error trying to inflate some of the " "payload, error -3"]; @@ -179,171 +219,141 @@ static BOOL HasGzipHeader(NSData *data) { STAssertNil([NSData gtm_dataByInflatingBytes:[suffixedGZipped bytes] length:[suffixedGZipped length]], nil); - - [localPool release]; } - (void)testInflateDeflate { - // generate a range of sizes w/ random content - for (int n = 0 ; n < 2 ; ++n) { - for (int x = 1 ; x < 128 ; ++x) { - NSAutoreleasePool *localPool = [[NSAutoreleasePool alloc] init]; - STAssertNotNil(localPool, @"failed to alloc local pool"); - - NSMutableData *data = [NSMutableData data]; - STAssertNotNil(data, @"failed to alloc data block"); - - // first pass small blocks, second pass, larger ones, but second pass - // avoid making them multimples of 128. - [data setLength:((n*x*128) + x)]; - FillWithRandom([data mutableBytes], [data length]); - - // 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"); - } - - [localPool release]; - } + 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 { - // generate a range of sizes w/ random content - for (int n = 0 ; n < 2 ; ++n) { - for (int x = 1 ; x < 128 ; ++x) { - NSAutoreleasePool *localPool = [[NSAutoreleasePool alloc] init]; - STAssertNotNil(localPool, @"failed to alloc local pool"); - - NSMutableData *data = [NSMutableData data]; - STAssertNotNil(data, @"failed to alloc data block"); - - // first pass small blocks, second pass, larger ones, but second pass - // avoid making them multimples of 128. - [data setLength:((n*x*128) + x)]; - FillWithRandom([data mutableBytes], [data length]); - - // 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"); - } - - [localPool release]; - } + 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"); } } |