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Signal-iOS/Signal/test/util/UtilTest.m
Ben Sandofsky f65d552f6d Prefix NSArray categories. 
Begin process of prefixing categories on Foundation and UIKit. This
follows Cocoa best practices. This makes sense given the number of third
party libraries the project incorporates, which may include their own
colliding category method names.

Use OWS prefix on classes that may be used across apps.
2014-11-20 00:34:47 -08:00

445 lines
20 KiB
Objective-C
Raw Blame History

#import "UtilTest.h"
#import "Util.h"
#import "TestUtil.h"
@implementation UtilTest
-(void) testFloorMultiple {
test([NumberUtil largestIntegerThatIsAtMost:0 andIsAMultipleOf:20] == 0);
test([NumberUtil largestIntegerThatIsAtMost:1 andIsAMultipleOf:20] == 0);
test([NumberUtil largestIntegerThatIsAtMost:5 andIsAMultipleOf:20] == 0);
test([NumberUtil largestIntegerThatIsAtMost:15 andIsAMultipleOf:20] == 0);
test([NumberUtil largestIntegerThatIsAtMost:19 andIsAMultipleOf:20] == 0);
test([NumberUtil largestIntegerThatIsAtMost:20 andIsAMultipleOf:20] == 20);
test([NumberUtil largestIntegerThatIsAtMost:21 andIsAMultipleOf:20] == 20);
}
-(void) testCeilingMultiple {
test([NumberUtil smallestIntegerThatIsAtLeast:0 andIsAMultipleOf:20] == 0);
test([NumberUtil smallestIntegerThatIsAtLeast:1 andIsAMultipleOf:20] == 20);
test([NumberUtil smallestIntegerThatIsAtLeast:5 andIsAMultipleOf:20] == 20);
test([NumberUtil smallestIntegerThatIsAtLeast:15 andIsAMultipleOf:20] == 20);
test([NumberUtil smallestIntegerThatIsAtLeast:19 andIsAMultipleOf:20] == 20);
test([NumberUtil smallestIntegerThatIsAtLeast:20 andIsAMultipleOf:20] == 20);
test([NumberUtil smallestIntegerThatIsAtLeast:21 andIsAMultipleOf:20] == 40);
}
-(void) testArrayToUint8Data {
test([[(@[]) ows_toUint8Data] length] == 0);
NSData* d = [@[@0, @1] ows_toUint8Data];
test(d.length == 2);
test(((uint8_t*)[d bytes])[0] == 0);
test(((uint8_t*)[d bytes])[1] == 1);
}
-(void) testArrayConcatDatas {
NSData* d1 = [@[@0, @1] ows_toUint8Data];
NSData* d2 = [@[@3, @4] ows_toUint8Data];
NSData* d3 = [@[@6, @7] ows_toUint8Data];
test([[@[] ows_concatDatas] isEqualToData:[(@[]) ows_toUint8Data]]);
test([[@[d1] ows_concatDatas] isEqualToData:d1]);
test([[(@[d1, d2, d3]) ows_concatDatas] isEqualToData:[(@[@0, @1, @3, @4, @6, @7]) ows_toUint8Data]]);
}
-(void) testDatadDecodedAsUtf8 {
testThrows([[(@[@0xC3, @0x28]) ows_toUint8Data] decodedAsUtf8]);
NSString* ab = [[(@[@97, @98]) ows_toUint8Data] decodedAsUtf8];
NSString* ab0 = [[(@[@97, @98, @0]) ows_toUint8Data] decodedAsUtf8];
test([ab isEqualToString:@"ab"]);
test([ab0 isEqualToString:@"ab\0"]);
test(![ab0 isEqualToString:ab]);
}
-(void) testTryFindFirstIndexOf {
NSData* d = [@[@0, @1, @2, @3, @4, @5] ows_toUint8Data];
NSData* d34 = [@[@3, @4] ows_toUint8Data];
NSData* d67 = [@[@6, @7] ows_toUint8Data];
NSData* d01 = [@[@0, @1] ows_toUint8Data];
NSData* d02 = [@[@0, @2] ows_toUint8Data];
test([[d tryFindIndexOf:[NSData data]] intValue] == 0);
test([d tryFindIndexOf:d].intValue == 0);
test([d tryFindIndexOf:d01].intValue == 0);
test([d tryFindIndexOf:d02] == nil);
test([d tryFindIndexOf:d34].intValue == 3);
test([d34 tryFindIndexOf:d] == nil);
test([d tryFindIndexOf:d67] == nil);
}
-(void) testDatadDecodedAsAscii {
testThrows([[(@[@97, @0xAA]) ows_toUint8Data] decodedAsAscii]);
NSString* ab = [[(@[@97, @98]) ows_toUint8Data] decodedAsAscii];
NSString* ab0 = [[(@[@97, @98, @0]) ows_toUint8Data] decodedAsAscii];
test([ab isEqualToString:@"ab"]);
test([ab0 isEqualToString:@"ab\0"]);
test(![ab0 isEqualToString:ab]);
}
-(void) testDatadDecodedAsAsciiReplacingErrorsWithDots {
test([[[(@[@97, @98]) ows_toUint8Data] decodedAsAsciiReplacingErrorsWithDots] isEqualToString:@"ab"]);
test([[[(@[@97, @98, @0, @127, @250]) ows_toUint8Data] decodedAsAsciiReplacingErrorsWithDots] isEqualToString:@"ab..."]);
}
-(void) testDataSkip {
NSData* d = [@[@0, @1, @2, @3] ows_toUint8Data];
test([[d skip:0] isEqualToData:d]);
test([[d skip:1] isEqualToData:[(@[@1, @2, @3]) ows_toUint8Data]]);
test([[d skip:3] isEqualToData:[@[@3] ows_toUint8Data]]);
test([[d skip:4] length] == 0);
testThrows([d skip:5]);
// stable
NSMutableData* m = [NSMutableData dataWithLength:2];
NSData* b = [m skip:1];
NSData* b2 = [m skip:0];
[m setUint8At:0 to:1];
[m setUint8At:1 to:1];
test([b uint8At:0] == 0);
test([b2 uint8At:0] == 0);
}
-(void) testDataTake {
NSData* d = [@[@0, @1, @2, @3] ows_toUint8Data];
test([[d take:0] length] == 0);
test([[d take:1] isEqualToData:[(@[@0]) ows_toUint8Data]]);
test([[d take:3] isEqualToData:[(@[@0, @1, @2]) ows_toUint8Data]]);
test([[d take:4] isEqualToData:d]);
testThrows([d take:5]);
// stable
NSMutableData* m = [NSMutableData dataWithLength:2];
NSData* b = [m take:1];
NSData* b2 = [m take:2];
[m setUint8At:0 to:1];
[m setUint8At:1 to:1];
test([b uint8At:0] == 0);
test([b2 uint8At:0] == 0);
}
-(void) testDataSkipLast {
NSData* d = [@[@0, @1, @2, @3] ows_toUint8Data];
test([[d skipLast:0] isEqualToData:d]);
test([[d skipLast:1] isEqualToData:[(@[@0, @1, @2]) ows_toUint8Data]]);
test([[d skipLast:3] isEqualToData:[@[@0] ows_toUint8Data]]);
test([[d skipLast:4] length] == 0);
testThrows([d skipLast:5]);
// stable
NSMutableData* m = [NSMutableData dataWithLength:2];
NSData* b = [m skipLast:1];
NSData* b2 = [m skipLast:0];
[m setUint8At:0 to:1];
[m setUint8At:1 to:1];
test([b uint8At:0] == 0);
test([b2 uint8At:0] == 0);
}
-(void) testDataTakeLast {
NSData* d = [@[@0, @1, @2, @3] ows_toUint8Data];
test([[d takeLast:0] length] == 0);
test([[d takeLast:1] isEqualToData:[(@[@3]) ows_toUint8Data]]);
test([[d takeLast:3] isEqualToData:[(@[@1, @2, @3]) ows_toUint8Data]]);
test([[d takeLast:4] isEqualToData:d]);
testThrows([d takeLast:5]);
// stable
NSMutableData* m = [NSMutableData dataWithLength:2];
NSData* b = [m takeLast:1];
NSData* b2 = [m takeLast:2];
[m setUint8At:0 to:1];
[m setUint8At:1 to:1];
test([b uint8At:0] == 0);
test([b2 uint8At:0] == 0);
}
-(void) testCongruentDifferenceMod2ToThe16 {
test([NumberUtil congruentDifferenceMod2ToThe16From:1 to:0xFFFF] == -2);
test([NumberUtil congruentDifferenceMod2ToThe16From:1 to:10] == 9);
test([NumberUtil congruentDifferenceMod2ToThe16From:0xFFFF to:1] == 2);
test([NumberUtil congruentDifferenceMod2ToThe16From:0 to:0x8000] == -0x8000);
test([NumberUtil congruentDifferenceMod2ToThe16From:0x8000 to:0] == -0x8000);
test([NumberUtil congruentDifferenceMod2ToThe16From:0 to:0] == 0);
}
-(void) testSubdataVolatileAgainstReference {
NSData* d = increasingData(10);
for (NSUInteger i = 0; i < 10; i++) {
for (NSUInteger j = 0; j < 10-i; j++) {
NSData* s1 = [d subdataVolatileWithRange:NSMakeRange(i, j)];
NSData* s2 = [d subdataWithRange:NSMakeRange(i, j)];
test([s1 isEqualToData:s2]);
}
}
}
-(void) testSubdataVolatileErrorCases {
NSData* d = increasingData(10);
[d subdataVolatileWithRange:NSMakeRange(0, 0)];
[d subdataVolatileWithRange:NSMakeRange(0, 10)];
[d subdataVolatileWithRange:NSMakeRange(10, 0)];
testThrows([d subdataVolatileWithRange:NSMakeRange(0, 11)]);
testThrows([d subdataVolatileWithRange:NSMakeRange(11, 0)]);
testThrows([d subdataVolatileWithRange:NSMakeRange(1, 10)]);
testThrows([d subdataVolatileWithRange:NSMakeRange(10, 1)]);
// potential wraparound cases
testThrows([d subdataVolatileWithRange:NSMakeRange(NSUIntegerMax, 1)]);
testThrows([d subdataVolatileWithRange:NSMakeRange(1, NSUIntegerMax)]);
}
-(void) testDataSkipVolatile {
NSData* d = [@[@0, @1, @2, @3] ows_toUint8Data];
test([[d skipVolatile:0] isEqualToData:d]);
test([[d skipVolatile:1] isEqualToData:[(@[@1, @2, @3]) ows_toUint8Data]]);
test([[d skipVolatile:3] isEqualToData:[@[@3] ows_toUint8Data]]);
test([[d skipVolatile:4] length] == 0);
testThrows([d skipVolatile:5]);
}
-(void) testDataTakeVolatile {
NSData* d = [@[@0, @1, @2, @3] ows_toUint8Data];
test([[d takeVolatile:0] length] == 0);
test([[d takeVolatile:1] isEqualToData:[(@[@0]) ows_toUint8Data]]);
test([[d takeVolatile:3] isEqualToData:[(@[@0, @1, @2]) ows_toUint8Data]]);
test([[d takeVolatile:4] isEqualToData:d]);
testThrows([d takeVolatile:5]);
}
-(void) testDataSkipLastVolatile {
NSData* d = [@[@0, @1, @2, @3] ows_toUint8Data];
test([[d skipLastVolatile:0] isEqualToData:d]);
test([[d skipLastVolatile:1] isEqualToData:[(@[@0, @1, @2]) ows_toUint8Data]]);
test([[d skipLastVolatile:3] isEqualToData:[@[@0] ows_toUint8Data]]);
test([[d skipLastVolatile:4] length] == 0);
testThrows([d skipLastVolatile:5]);
}
-(void) testDataTakeLastVolatile {
NSData* d = [@[@0, @1, @2, @3] ows_toUint8Data];
test([[d takeLastVolatile:0] length] == 0);
test([[d takeLastVolatile:1] isEqualToData:[(@[@3]) ows_toUint8Data]]);
test([[d takeLastVolatile:3] isEqualToData:[(@[@1, @2, @3]) ows_toUint8Data]]);
test([[d takeLastVolatile:4] isEqualToData:d]);
testThrows([d takeLastVolatile:5]);
}
-(void) testDataUint8At {
NSData* d = [@[@0, @1, @2, @3] ows_toUint8Data];
test([d uint8At:0] == 0);
test([d uint8At:1] == 1);
test([d uint8At:2] == 2);
test([d uint8At:3] == 3);
testThrows([d uint8At:4]);
}
-(void) testDataSetUint8At {
NSMutableData* d = [NSMutableData dataWithLength:4];
[d setUint8At:0 to:11];
[d setUint8At:1 to:12];
[d setUint8At:2 to:13];
[d setUint8At:3 to:14];
testThrows([d setUint8At:4 to:15]);
test([d isEqualToData:[(@[@11, @12, @13, @14]) ows_toUint8Data]]);
}
-(void) testMutableDataReplaceBytesStartingAt {
NSMutableData* d = [NSMutableData dataWithLength:6];
NSData* d2 = [@[@1, @2, @3] ows_toUint8Data];
testThrows([d replaceBytesStartingAt:0 withData:nil]);
testThrows([d replaceBytesStartingAt:4 withData:d2]);
[d replaceBytesStartingAt:0 withData:d2];
test([d isEqualToData:[(@[@1, @2, @3, @0, @0, @0]) ows_toUint8Data]]);
[d replaceBytesStartingAt:2 withData:d2];
test([d isEqualToData:[(@[@1, @2, @1, @2, @3, @0]) ows_toUint8Data]]);
[d replaceBytesStartingAt:3 withData:d2];
test([d isEqualToData:[(@[@1, @2, @1, @1, @2, @3]) ows_toUint8Data]]);
}
-(void) testStringEncodedAsUtf8 {
test([@"ab".encodedAsUtf8 isEqualToData:[(@[@97, @98]) ows_toUint8Data]]);
}
-(void) testStringEncodedAsAscii {
test([@"ab".encodedAsAscii isEqualToData:[(@[@97, @98]) ows_toUint8Data]]);
testThrows(@"√".encodedAsAscii);
}
-(void) testBase64EncodeKnown {
test([@"".encodedAsUtf8.encodedAsBase64 isEqualToString:@""]);
test([@"f".encodedAsUtf8.encodedAsBase64 isEqualToString:@"Zg=="]);
test([@"fo".encodedAsUtf8.encodedAsBase64 isEqualToString:@"Zm8="]);
test([@"foo".encodedAsUtf8.encodedAsBase64 isEqualToString:@"Zm9v"]);
test([@"foob".encodedAsUtf8.encodedAsBase64 isEqualToString:@"Zm9vYg=="]);
test([@"fooba".encodedAsUtf8.encodedAsBase64 isEqualToString:@"Zm9vYmE="]);
test([@"foobar".encodedAsUtf8.encodedAsBase64 isEqualToString:@"Zm9vYmFy"]);
}
-(void) testBase64DecodeKnown {
test([@"".encodedAsUtf8 isEqualToData:[@"" decodedAsBase64Data]]);
test([@"f".encodedAsUtf8 isEqualToData:[@"Zg==" decodedAsBase64Data]]);
test([@"fo".encodedAsUtf8 isEqualToData:[@"Zm8=" decodedAsBase64Data]]);
test([@"foo".encodedAsUtf8 isEqualToData:[@"Zm9v" decodedAsBase64Data]]);
test([@"foob".encodedAsUtf8 isEqualToData:[@"Zm9vYg==" decodedAsBase64Data]]);
test([@"fooba".encodedAsUtf8 isEqualToData:[@"Zm9vYmE=" decodedAsBase64Data]]);
test([@"foobar".encodedAsUtf8 isEqualToData:[@"Zm9vYmFy" decodedAsBase64Data]]);
}
-(void) testBase64Perturbed {
for (NSUInteger i = 0; i < 100; i++) {
uint32_t n = arc4random_uniform(10) + 10;
uint8_t data[n];
arc4random_buf(data, sizeof(data));
NSData* d = [NSData dataWithBytes:data length:sizeof(data)];
NSString* b = d.encodedAsBase64;
NSData* d2 = [b decodedAsBase64Data];
if (![d isEqualToData:d2]) {
XCTFail(@"%@",[d description]);
}
}
}
-(void) testToRegex {
testThrows(@"(".toRegularExpression);
NSRegularExpression* r = @"a+b".toRegularExpression;
test([r numberOfMatchesInString:@"a" options:NSMatchingAnchored range:NSMakeRange(0, 1)] == 0);
test([r numberOfMatchesInString:@"b" options:NSMatchingAnchored range:NSMakeRange(0, 1)] == 0);
test([r numberOfMatchesInString:@"ba" options:NSMatchingAnchored range:NSMakeRange(0, 1)] == 0);
test([r numberOfMatchesInString:@"ab" options:NSMatchingAnchored range:NSMakeRange(0, 2)] == 1);
test([r numberOfMatchesInString:@"aab" options:NSMatchingAnchored range:NSMakeRange(0, 3)] == 1);
test([r numberOfMatchesInString:@"aabXBNSAUI" options:NSMatchingAnchored range:NSMakeRange(0, 3)] == 1);
test([r numberOfMatchesInString:@"aacb" options:NSMatchingAnchored range:NSMakeRange(0, 3)] == 0);
}
-(void) testWithMatchesAgainstReplacedBy {
test([[@"(555)-555-5555" withMatchesAgainst:[@"[^0-9+]" toRegularExpression] replacedBy:@""] isEqualToString:@"5555555555"]);
test([[@"aaaaaa" withMatchesAgainst:@"a".toRegularExpression replacedBy:@""] isEqualToString:@""]);
test([[@"aabaabaa" withMatchesAgainst:@"b".toRegularExpression replacedBy:@"wonder"] isEqualToString:@"aawonderaawonderaa"]);
}
-(void) testContainsAnyMatches {
NSRegularExpression* r = [@"^\\+[0-9]{10,}" toRegularExpression];
test([@"+5555555555" containsAnyMatches:r]);
test([@"+6555595555" containsAnyMatches:r]);
test([@"+65555555557+/few,pf" containsAnyMatches:r]);
test(![@" +5555555555" containsAnyMatches:r]);
test(![@"+555KL55555" containsAnyMatches:r]);
test(![@"+1-555-555-5555" containsAnyMatches:r]);
test(![@"1-(555)-555-5555" containsAnyMatches:r]);
}
-(void) testWithPrefixRemovedElseNull {
test([[@"test" withPrefixRemovedElseNull:@""] isEqualToString:@"test"]);
test([[@"test" withPrefixRemovedElseNull:@"t"] isEqualToString:@"est"]);
test([[@"test" withPrefixRemovedElseNull:@"te"] isEqualToString:@"st"]);
test([[@"test" withPrefixRemovedElseNull:@"tes"] isEqualToString:@"t"]);
test([[@"test" withPrefixRemovedElseNull:@"test"] isEqualToString:@""]);
test([@"test" withPrefixRemovedElseNull:@"test2"] == nil);
test([@"test" withPrefixRemovedElseNull:@"a"] == nil);
testThrows([@"test" withPrefixRemovedElseNull:nil]);
}
-(void) testToJson {
test([@{}.encodedAsJson isEqualToString:@"{}"]);
test([[@{@"a":@"b"} encodedAsJson] isEqualToString:@"{\"a\":\"b\"}"]);
test([[@{@"c":@5} encodedAsJson] isEqualToString:@"{\"c\":5}"]);
test([[(@{@"a":@5,@"b":@YES}) encodedAsJson] isEqualToString:@"{\"a\":5,\"b\":true}"]);
testThrows([@{@"ev": @"a+b".toRegularExpression} encodedAsJson]);
}
-(void) testFromJson {
test([[@"{}" decodedAsJsonIntoDictionary] isEqualToDictionary:@{}]);
test([[@"{\"a\":\"b\"}" decodedAsJsonIntoDictionary] isEqualToDictionary:@{@"a":@"b"}]);
test([[@"{\"c\":5}" decodedAsJsonIntoDictionary] isEqualToDictionary:@{@"c":@5}]);
test([[@"{\"a\":5,\"b\":true}" decodedAsJsonIntoDictionary] isEqualToDictionary:(@{@"a":@5,@"b":@YES})]);
testThrows([@"" decodedAsJsonIntoDictionary]);
testThrows([@"}" decodedAsJsonIntoDictionary]);
testThrows([@"{{}" decodedAsJsonIntoDictionary]);
}
-(void) testRepresentedAsHexString {
test([[[NSData data] encodedAsHexString] isEqualToString:@""]);
test([increasingData(17).encodedAsHexString isEqualToString:@"000102030405060708090a0b0c0d0e0f10"]);
test([increasingDataFrom(256-16,16).encodedAsHexString isEqualToString:@"f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff"]);
}
-(void) testDecodedAsHexData {
test([[@"" decodedAsHexString] isEqualToData:[NSData data]]);
test([[@"000102030405060708090a0b0c0d0e0f10" decodedAsHexString] isEqualToData:increasingData(17)]);
test([[@"f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff" decodedAsHexString] isEqualToData:increasingDataFrom(256-16,16)]);
testThrows([@"gg" decodedAsHexString]);
testThrows([@"-1" decodedAsHexString]);
testThrows([@"a" decodedAsHexString]);
testThrows([@"-" decodedAsHexString]);
testThrows([@"0" decodedAsHexString]);
}
-(void) testHasUnsignedIntegerValue {
test((@0).hasUnsignedIntegerValue);
test((@1).hasUnsignedIntegerValue);
test((@0xFFFFFFFF).hasUnsignedIntegerValue);
test(@(pow(2, 31)).hasUnsignedIntegerValue);
test(!(@-1).hasUnsignedIntegerValue);
test(!(@0.5).hasUnsignedIntegerValue);
}
-(void) testHasUnsignedLongLongValue {
test((@0).hasUnsignedLongLongValue);
test((@1).hasUnsignedLongLongValue);
test((@0xFFFFFFFFFFFFFFFF).hasUnsignedLongLongValue);
test(@(pow(2, 63)).hasUnsignedLongLongValue);
test(!@(pow(2, 64)).hasUnsignedLongLongValue);
test(!(@-1).hasUnsignedLongLongValue);
test(!(@0.5).hasUnsignedLongLongValue);
}
-(void) testHasLongLongValue {
test((@0).hasLongLongValue);
test((@1).hasLongLongValue);
test((@-11).hasLongLongValue);
test(@LONG_LONG_MAX.hasLongLongValue);
test(@LONG_LONG_MIN.hasLongLongValue);
test(!@ULONG_LONG_MAX.hasLongLongValue);
test(@(pow(2, 62)).hasLongLongValue);
test(!@(pow(2, 63)).hasLongLongValue);
test(!@(-pow(2, 64)).hasLongLongValue);
test(!(@0.5).hasLongLongValue);
}
-(void) testTryParseAsUnsignedInteger {
test([@"" tryParseAsUnsignedInteger] == nil);
test([@"88ffhih" tryParseAsUnsignedInteger] == nil);
test([@"0xA" tryParseAsUnsignedInteger] == nil);
test([@"A" tryParseAsUnsignedInteger] == nil);
test([@"-1" tryParseAsUnsignedInteger] == nil);
test([@"-" tryParseAsUnsignedInteger] == nil);
test([[@"0" tryParseAsUnsignedInteger] isEqual:@0]);
test([[@"00" tryParseAsUnsignedInteger] isEqual:@0]);
test([[@"1" tryParseAsUnsignedInteger] isEqual:@1]);
test([[@"01" tryParseAsUnsignedInteger] isEqual:@1]);
test([[@"25" tryParseAsUnsignedInteger] isEqual:@25]);
test([[(@NSUIntegerMax).description tryParseAsUnsignedInteger] isEqual:@NSUIntegerMax]);
if (NSUIntegerMax == 4294967295UL) {
test([@"4294967296" tryParseAsUnsignedInteger] == nil);
}
if (NSUIntegerMax == 18446744073709551615ULL) {
test([@"18446744073709551616" tryParseAsUnsignedInteger] == nil);
}
NSString* max = (@NSUIntegerMax).description;
NSString* farTooLarge = [max stringByAppendingString:max];
test([farTooLarge tryParseAsUnsignedInteger] == nil);
}
-(void) testRemoveAllCharactersIn {
testThrows([@"" removeAllCharactersIn:nil]);
test([[@"" removeAllCharactersIn:NSCharacterSet.letterCharacterSet] isEqual:@""]);
test([[@"1" removeAllCharactersIn:NSCharacterSet.letterCharacterSet] isEqual:@"1"]);
test([[@"a" removeAllCharactersIn:NSCharacterSet.letterCharacterSet] isEqual:@""]);
test([[@"A" removeAllCharactersIn:NSCharacterSet.letterCharacterSet] isEqual:@""]);
test([[@"abc123%^&" removeAllCharactersIn:NSCharacterSet.letterCharacterSet] isEqual:@"123%^&"]);
test([[@"" removeAllCharactersIn:NSCharacterSet.decimalDigitCharacterSet] isEqual:@""]);
test([[@"1" removeAllCharactersIn:NSCharacterSet.decimalDigitCharacterSet] isEqual:@""]);
test([[@"a" removeAllCharactersIn:NSCharacterSet.decimalDigitCharacterSet] isEqual:@"a"]);
test([[@"A" removeAllCharactersIn:NSCharacterSet.decimalDigitCharacterSet] isEqual:@"A"]);
test([[@"abc123%^&" removeAllCharactersIn:NSCharacterSet.decimalDigitCharacterSet] isEqual:@"abc%^&"]);
}
-(void) testDigitsOnly {
test([@"".digitsOnly isEqual:@""]);
test([@"1".digitsOnly isEqual:@"1"]);
test([@"a".digitsOnly isEqual:@""]);
test([@"(555) 235-7111".digitsOnly isEqual:@"5552357111"]);
}
-(void) testWithCharactersInRangeReplacedBy {
testThrows([@"" withCharactersInRange:NSMakeRange(0, 0) replacedBy:nil]);
testThrows([@"" withCharactersInRange:NSMakeRange(0, 1) replacedBy:@""]);
testThrows([@"" withCharactersInRange:NSMakeRange(1, 0) replacedBy:@""]);
testThrows([@"" withCharactersInRange:NSMakeRange(1, 1) replacedBy:@""]);
testThrows([@"abc" withCharactersInRange:NSMakeRange(4, 0) replacedBy:@""]);
testThrows([@"abc" withCharactersInRange:NSMakeRange(3, 1) replacedBy:@""]);
testThrows([@"abc" withCharactersInRange:NSMakeRange(4, NSUIntegerMax) replacedBy:@""]);
test([[@"" withCharactersInRange:NSMakeRange(0, 0) replacedBy:@""] isEqual:@""]);
test([[@"" withCharactersInRange:NSMakeRange(0, 0) replacedBy:@"abc"] isEqual:@"abc"]);
test([[@"abc" withCharactersInRange:NSMakeRange(0, 0) replacedBy:@"123"] isEqual:@"123abc"]);
test([[@"abc" withCharactersInRange:NSMakeRange(3, 0) replacedBy:@"123"] isEqual:@"abc123"]);
test([[@"abc" withCharactersInRange:NSMakeRange(2, 0) replacedBy:@"123"] isEqual:@"ab123c"]);
test([[@"abcdef" withCharactersInRange:NSMakeRange(1, 2) replacedBy:@"1234"] isEqual:@"a1234def"]);
}
@end
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