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TestNSString.swift
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// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
#if DEPLOYMENT_RUNTIME_OBJC || os(Linux)
import Foundation
import XCTest
#else
import SwiftFoundation
import SwiftXCTest
#endif
import CoreFoundation
#if os(OSX) || os(iOS)
internal let kCFStringEncodingMacRoman = CFStringBuiltInEncodings.macRoman.rawValue
internal let kCFStringEncodingWindowsLatin1 = CFStringBuiltInEncodings.windowsLatin1.rawValue
internal let kCFStringEncodingISOLatin1 = CFStringBuiltInEncodings.isoLatin1.rawValue
internal let kCFStringEncodingNextStepLatin = CFStringBuiltInEncodings.nextStepLatin.rawValue
internal let kCFStringEncodingASCII = CFStringBuiltInEncodings.ASCII.rawValue
internal let kCFStringEncodingUnicode = CFStringBuiltInEncodings.unicode.rawValue
internal let kCFStringEncodingUTF8 = CFStringBuiltInEncodings.UTF8.rawValue
internal let kCFStringEncodingNonLossyASCII = CFStringBuiltInEncodings.nonLossyASCII.rawValue
internal let kCFStringEncodingUTF16 = CFStringBuiltInEncodings.UTF16.rawValue
internal let kCFStringEncodingUTF16BE = CFStringBuiltInEncodings.UTF16BE.rawValue
internal let kCFStringEncodingUTF16LE = CFStringBuiltInEncodings.UTF16LE.rawValue
internal let kCFStringEncodingUTF32 = CFStringBuiltInEncodings.UTF32.rawValue
internal let kCFStringEncodingUTF32BE = CFStringBuiltInEncodings.UTF32BE.rawValue
internal let kCFStringEncodingUTF32LE = CFStringBuiltInEncodings.UTF32LE.rawValue
#endif
class TestNSString : XCTestCase {
static var allTests: [(String, (TestNSString) -> () throws -> Void)] {
return [
("test_boolValue", test_boolValue ),
("test_BridgeConstruction", test_BridgeConstruction ),
("test_integerValue", test_integerValue ),
("test_intValue", test_intValue ),
("test_isEqualToStringWithSwiftString", test_isEqualToStringWithSwiftString ),
("test_isEqualToObjectWithNSString", test_isEqualToObjectWithNSString ),
("test_isNotEqualToObjectWithNSNumber", test_isNotEqualToObjectWithNSNumber ),
("test_FromASCIIData", test_FromASCIIData ),
("test_FromUTF8Data", test_FromUTF8Data ),
// Swift3 updates broke the expectations of this test. disabling for now
// ("test_FromMalformedUTF8Data", test_FromMalformedUTF8Data ),
("test_FromASCIINSData", test_FromASCIINSData ),
("test_FromUTF8NSData", test_FromUTF8NSData ),
// Swift3 updates broke the expectations of this test. disabling for now
// ("test_FromMalformedUTF8NSData", test_FromMalformedUTF8NSData ),
("test_FromNullTerminatedCStringInASCII", test_FromNullTerminatedCStringInASCII ),
("test_FromNullTerminatedCStringInUTF8", test_FromNullTerminatedCStringInUTF8 ),
// Swift3 updates broke the expectations of this test. disabling for now
// ("test_FromMalformedNullTerminatedCStringInUTF8", test_FromMalformedNullTerminatedCStringInUTF8 ),
("test_uppercaseString", test_uppercaseString ),
("test_lowercaseString", test_lowercaseString ),
("test_capitalizedString", test_capitalizedString ),
("test_longLongValue", test_longLongValue ),
("test_rangeOfCharacterFromSet", test_rangeOfCharacterFromSet ),
("test_CFStringCreateMutableCopy", test_CFStringCreateMutableCopy),
("test_FromContentsOfURL",test_FromContentsOfURL),
("test_FromContentOfFile",test_FromContentOfFile),
("test_swiftStringUTF16", test_swiftStringUTF16),
// This test takes forever on build servers; it has been seen up to 1852.084 seconds
// ("test_completePathIntoString", test_completePathIntoString),
("test_stringByTrimmingCharactersInSet", test_stringByTrimmingCharactersInSet),
("test_initializeWithFormat", test_initializeWithFormat),
("test_initializeWithFormat2", test_initializeWithFormat2),
("test_initializeWithFormat3", test_initializeWithFormat3),
("test_deletingLastPathComponent", test_deletingLastPathComponent),
("test_getCString_simple", test_getCString_simple),
("test_getCString_nonASCII_withASCIIAccessor", test_getCString_nonASCII_withASCIIAccessor),
("test_NSHomeDirectoryForUser", test_NSHomeDirectoryForUser),
("test_resolvingSymlinksInPath", test_resolvingSymlinksInPath),
("test_expandingTildeInPath", test_expandingTildeInPath),
("test_standardizingPath", test_standardizingPath),
("test_addingPercentEncoding", test_addingPercentEncoding),
("test_removingPercentEncodingInLatin", test_removingPercentEncodingInLatin),
("test_removingPercentEncodingInNonLatin", test_removingPercentEncodingInNonLatin),
("test_removingPersentEncodingWithoutEncoding", test_removingPersentEncodingWithoutEncoding),
("test_addingPercentEncodingAndBack", test_addingPercentEncodingAndBack),
("test_stringByAppendingPathExtension", test_stringByAppendingPathExtension),
("test_deletingPathExtension", test_deletingPathExtension),
("test_ExternalRepresentation", test_ExternalRepresentation),
("test_mutableStringConstructor", test_mutableStringConstructor),
("test_PrefixSuffix", test_PrefixSuffix),
("test_utf16StringRangeCount", test_StringUTF16ViewIndexStrideableRange),
("test_reflection", { _ in test_reflection }),
("test_replacingOccurrences", test_replacingOccurrences),
("test_getLineStart", test_getLineStart),
("test_substringWithRange", test_substringWithRange),
]
}
func test_boolValue() {
let trueStrings: [NSString] = ["t", "true", "TRUE", "tRuE", "yes", "YES", "1", "+000009"]
for string in trueStrings {
XCTAssert(string.boolValue)
}
let falseStrings: [NSString] = ["false", "FALSE", "fAlSe", "no", "NO", "0", "<true>", "_true", "-00000"]
for string in falseStrings {
XCTAssertFalse(string.boolValue)
}
}
func test_BridgeConstruction() {
let literalConversion: NSString = "literal"
XCTAssertEqual(literalConversion.length, 7)
let nonLiteralConversion = NSString(string: "test\(self)")
XCTAssertTrue(nonLiteralConversion.length > 4)
let nonLiteral2 = NSString(string: String(4))
let t = nonLiteral2.character(at: 0)
XCTAssertTrue(t == 52)
let externalString: NSString = NSString(string: String.localizedName(of: String.defaultCStringEncoding))
XCTAssertTrue(externalString.length >= 4)
let cluster: NSString = "✌🏾"
XCTAssertEqual(cluster.length, 3)
}
func test_integerValue() {
let string1: NSString = "123"
XCTAssertEqual(string1.integerValue, 123)
let string2: NSString = "123a"
XCTAssertEqual(string2.integerValue, 123)
let string3: NSString = "-123a"
XCTAssertEqual(string3.integerValue, -123)
let string4: NSString = "a123"
XCTAssertEqual(string4.integerValue, 0)
let string5: NSString = "+123"
XCTAssertEqual(string5.integerValue, 123)
let string6: NSString = "++123"
XCTAssertEqual(string6.integerValue, 0)
let string7: NSString = "-123"
XCTAssertEqual(string7.integerValue, -123)
let string8: NSString = "--123"
XCTAssertEqual(string8.integerValue, 0)
let string9: NSString = "999999999999999999999999999999"
XCTAssertEqual(string9.integerValue, Int.max)
let string10: NSString = "-999999999999999999999999999999"
XCTAssertEqual(string10.integerValue, Int.min)
}
func test_intValue() {
let string1: NSString = "123"
XCTAssertEqual(string1.intValue, 123)
let string2: NSString = "123a"
XCTAssertEqual(string2.intValue, 123)
let string3: NSString = "-123a"
XCTAssertEqual(string3.intValue, -123)
let string4: NSString = "a123"
XCTAssertEqual(string4.intValue, 0)
let string5: NSString = "+123"
XCTAssertEqual(string5.intValue, 123)
let string6: NSString = "++123"
XCTAssertEqual(string6.intValue, 0)
let string7: NSString = "-123"
XCTAssertEqual(string7.intValue, -123)
let string8: NSString = "--123"
XCTAssertEqual(string8.intValue, 0)
let string9: NSString = "999999999999999999999999999999"
XCTAssertEqual(string9.intValue, Int32.max)
let string10: NSString = "-999999999999999999999999999999"
XCTAssertEqual(string10.intValue, Int32.min)
}
func test_isEqualToStringWithSwiftString() {
let string: NSString = "literal"
let swiftString = "literal"
XCTAssertTrue(string.isEqual(to: swiftString))
}
func test_isEqualToObjectWithNSString() {
let string1: NSString = "literal"
let string2: NSString = "literal"
XCTAssertTrue(string1.isEqual(string2))
}
func test_isNotEqualToObjectWithNSNumber() {
let string: NSString = "5"
let number: NSNumber = 5
XCTAssertFalse(string.isEqual(number))
}
internal let mockASCIIStringBytes: [UInt8] = [0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x53, 0x77, 0x69, 0x66, 0x74, 0x21]
internal let mockASCIIString = "Hello Swift!"
internal let mockUTF8StringBytes: [UInt8] = [0x49, 0x20, 0xE2, 0x9D, 0xA4, 0xEF, 0xB8, 0x8F, 0x20, 0x53, 0x77, 0x69, 0x66, 0x74]
internal let mockUTF8String = "I ❤️ Swift"
internal let mockMalformedUTF8StringBytes: [UInt8] = [0xFF]
func test_FromASCIIData() {
let bytes = mockASCIIStringBytes
let string = NSString(bytes: bytes, length: bytes.count, encoding: String.Encoding.ascii.rawValue)
XCTAssertNotNil(string)
XCTAssertTrue(string?.isEqual(to: mockASCIIString) ?? false)
}
func test_FromUTF8Data() {
let bytes = mockUTF8StringBytes
let string = NSString(bytes: bytes, length: bytes.count, encoding: String.Encoding.utf8.rawValue)
XCTAssertNotNil(string)
XCTAssertTrue(string?.isEqual(to: mockUTF8String) ?? false)
}
func test_FromMalformedUTF8Data() {
let bytes = mockMalformedUTF8StringBytes
let string = NSString(bytes: bytes, length: bytes.count, encoding: String.Encoding.utf8.rawValue)
XCTAssertNil(string)
}
func test_FromASCIINSData() {
let bytes = mockASCIIStringBytes
let data = Data(bytes: bytes, count: bytes.count)
let string = NSString(data: data, encoding: String.Encoding.ascii.rawValue)
XCTAssertNotNil(string)
XCTAssertTrue(string?.isEqual(to: mockASCIIString) ?? false)
}
func test_FromUTF8NSData() {
let bytes = mockUTF8StringBytes
let data = Data(bytes: bytes, count: bytes.count)
let string = NSString(data: data, encoding: String.Encoding.utf8.rawValue)
XCTAssertNotNil(string)
XCTAssertTrue(string?.isEqual(to: mockUTF8String) ?? false)
}
func test_FromMalformedUTF8NSData() {
let bytes = mockMalformedUTF8StringBytes
let data = Data(bytes: bytes, count: bytes.count)
let string = NSString(data: data, encoding: String.Encoding.utf8.rawValue)
XCTAssertNil(string)
}
func test_FromNullTerminatedCStringInASCII() {
let bytes = mockASCIIStringBytes + [0x00]
let string = NSString(CString: bytes.map { Int8(bitPattern: $0) }, encoding: String.Encoding.ascii.rawValue)
XCTAssertNotNil(string)
XCTAssertTrue(string?.isEqual(to: mockASCIIString) ?? false)
}
func test_FromNullTerminatedCStringInUTF8() {
let bytes = mockUTF8StringBytes + [0x00]
let string = NSString(CString: bytes.map { Int8(bitPattern: $0) }, encoding: String.Encoding.utf8.rawValue)
XCTAssertNotNil(string)
XCTAssertTrue(string?.isEqual(to: mockUTF8String) ?? false)
}
func test_FromMalformedNullTerminatedCStringInUTF8() {
let bytes = mockMalformedUTF8StringBytes + [0x00]
let string = NSString(CString: bytes.map { Int8(bitPattern: $0) }, encoding: String.Encoding.utf8.rawValue)
XCTAssertNil(string)
}
func test_FromContentsOfURL() {
guard let testFileURL = testBundle().url(forResource: "NSStringTestData", withExtension: "txt") else {
XCTFail("URL for NSStringTestData.txt is nil")
return
}
do {
let string = try NSString(contentsOf: testFileURL, encoding: String.Encoding.utf8.rawValue)
XCTAssertEqual(string, "swift-corelibs-foundation")
} catch {
XCTFail("Unable to init NSString from contentsOf:encoding:")
}
do {
let string = try NSString(contentsOf: testFileURL, encoding: String.Encoding.utf16.rawValue)
XCTAssertNotEqual(string, "swift-corelibs-foundation", "Wrong result when reading UTF-8 file with UTF-16 encoding in contentsOf:encoding")
} catch {
XCTFail("Unable to init NSString from contentsOf:encoding:")
}
}
func test_FromContentOfFile() {
let testFilePath = testBundle().path(forResource: "NSStringTestData", ofType: "txt")
XCTAssertNotNil(testFilePath)
do {
let str = try NSString(contentsOfFile: testFilePath!, encoding: String.Encoding.utf8.rawValue)
XCTAssertEqual(str, "swift-corelibs-foundation")
} catch {
XCTFail("Unable to init NSString from contentsOfFile:encoding:")
}
}
func test_uppercaseString() {
XCTAssertEqual(NSString(stringLiteral: "abcd").uppercased, "ABCD")
XCTAssertEqual(NSString(stringLiteral: "ａｂｃｄ").uppercased, "ＡＢＣＤ") // full-width
XCTAssertEqual(NSString(stringLiteral: "абВГ").uppercased, "АБВГ")
XCTAssertEqual(NSString(stringLiteral: "たちつてと").uppercased, "たちつてと")
// Special casing (see swift/validation-tests/stdlib/NSStringAPI.swift)
XCTAssertEqual(NSString(stringLiteral: "\u{0069}").uppercased(with: Locale(identifier: "en")), "\u{0049}")
// Currently fails; likely there are locale loading issues that are preventing this from functioning correctly
// XCTAssertEqual(NSString(stringLiteral: "\u{0069}").uppercased(with: NSLocale(localeIdentifier: "tr")), "\u{0130}")
XCTAssertEqual(NSString(stringLiteral: "\u{00df}").uppercased, "\u{0053}\u{0053}")
XCTAssertEqual(NSString(stringLiteral: "\u{fb01}").uppercased, "\u{0046}\u{0049}")
}
func test_lowercaseString() {
XCTAssertEqual(NSString(stringLiteral: "abCD").lowercased, "abcd")
XCTAssertEqual(NSString(stringLiteral: "ＡＢＣＤ").lowercased, "ａｂｃｄ") // full-width
XCTAssertEqual(NSString(stringLiteral: "aБВГ").lowercased, "aбвг")
XCTAssertEqual(NSString(stringLiteral: "たちつてと").lowercased, "たちつてと")
// Special casing (see swift/validation-tests/stdlib/NSStringAPI.swift)
XCTAssertEqual(NSString(stringLiteral: "\u{0130}").lowercased(with: Locale(identifier: "en")), "\u{0069}\u{0307}")
// Currently fails; likely there are locale loading issues that are preventing this from functioning correctly
// XCTAssertEqual(NSString(stringLiteral: "\u{0130}").lowercased(with: NSLocale(localeIdentifier: "tr")), "\u{0069}")
XCTAssertEqual(NSString(stringLiteral: "\u{0049}\u{0307}").lowercased(with: Locale(identifier: "en")), "\u{0069}\u{0307}")
// Currently fails; likely there are locale loading issues that are preventing this from functioning correctly
// XCTAssertEqual(NSString(stringLiteral: "\u{0049}\u{0307}").lowercaseStringWithLocale(NSLocale(localeIdentifier: "tr")), "\u{0069}")
}
func test_capitalizedString() {
XCTAssertEqual(NSString(stringLiteral: "foo Foo fOO FOO").capitalized, "Foo Foo Foo Foo")
XCTAssertEqual(NSString(stringLiteral: "жжж").capitalized, "Жжж")
}
func test_longLongValue() {
let string1: NSString = "123"
XCTAssertEqual(string1.longLongValue, 123)
let string2: NSString = "123a"
XCTAssertEqual(string2.longLongValue, 123)
let string3: NSString = "-123a"
XCTAssertEqual(string3.longLongValue, -123)
let string4: NSString = "a123"
XCTAssertEqual(string4.longLongValue, 0)
let string5: NSString = "+123"
XCTAssertEqual(string5.longLongValue, 123)
let string6: NSString = "++123"
XCTAssertEqual(string6.longLongValue, 0)
let string7: NSString = "-123"
XCTAssertEqual(string7.longLongValue, -123)
let string8: NSString = "--123"
XCTAssertEqual(string8.longLongValue, 0)
let string9: NSString = "999999999999999999999999999999"
XCTAssertEqual(string9.longLongValue, Int64.max)
let string10: NSString = "-999999999999999999999999999999"
XCTAssertEqual(string10.longLongValue, Int64.min)
}
func test_rangeOfCharacterFromSet() {
let string: NSString = "0Az"
let letters = CharacterSet.letters
let decimalDigits = CharacterSet.decimalDigits
XCTAssertEqual(string.rangeOfCharacter(from: letters).location, 1)
XCTAssertEqual(string.rangeOfCharacter(from: decimalDigits).location, 0)
XCTAssertEqual(string.rangeOfCharacter(from: letters, options: .backwards).location, 2)
XCTAssertEqual(string.rangeOfCharacter(from: letters, options: [], range: NSMakeRange(2, 1)).location, 2)
}
func test_CFStringCreateMutableCopy() {
let nsstring: NSString = "абВГ"
let mCopy = CFStringCreateMutableCopy(kCFAllocatorSystemDefault, 0, unsafeBitCast(nsstring, to: CFString.self))
let str = unsafeBitCast(mCopy, to: NSString.self)
XCTAssertEqual(nsstring, str)
}
// This test verifies that CFStringGetBytes with a UTF16 encoding works on an NSString backed by a Swift string
func test_swiftStringUTF16() {
#if os(OSX) || os(iOS)
let kCFStringEncodingUTF16 = CFStringBuiltInEncodings.UTF16.rawValue
#endif
let testString = "hello world"
let string = NSString(string: testString)
let cfString = unsafeBitCast(string, to: CFString.self)
// Get the bytes as UTF16
let reservedLength = 50
var buf : [UInt8] = []
buf.reserveCapacity(reservedLength)
var usedLen : CFIndex = 0
let _ = buf.withUnsafeMutableBufferPointer { p in
CFStringGetBytes(cfString, CFRangeMake(0, CFStringGetLength(cfString)), CFStringEncoding(kCFStringEncodingUTF16), 0, false, p.baseAddress, reservedLength, &usedLen)
}
// Make a new string out of it
let newCFString = CFStringCreateWithBytes(nil, buf, usedLen, CFStringEncoding(kCFStringEncodingUTF16), false)
let newString = unsafeBitCast(newCFString, to: NSString.self)
XCTAssertTrue(newString.isEqual(to: testString))
}
func test_completePathIntoString() {
let fileNames = [
NSTemporaryDirectory() + "Test_completePathIntoString_01",
NSTemporaryDirectory() + "test_completePathIntoString_02",
NSTemporaryDirectory() + "test_completePathIntoString_01.txt",
NSTemporaryDirectory() + "test_completePathIntoString_01.dat",
NSTemporaryDirectory() + "test_completePathIntoString_03.DAT"
]
guard ensureFiles(fileNames) else {
XCTAssert(false, "Could not create temp files for testing.")
return
}
let tmpPath = { (path: String) -> String in
return NSTemporaryDirectory() + "\(path)"
}
do {
let path: String = tmpPath("")
var outName: String = ""
var matches: [String] = []
_ = path.completePath(into: &outName, caseSensitive: false, matchesInto: &matches, filterTypes: nil)
_ = try FileManager.default.contentsOfDirectory(at: URL(string: path)!, includingPropertiesForKeys: nil, options: [])
XCTAssert(outName == "/", "If NSString is valid path to directory which has '/' suffix then outName is '/'.")
// This assert fails on CI; https://bugs.swift.org/browse/SR-389
// XCTAssert(matches.count == content.count && matches.count == count, "If NSString is valid path to directory then matches contain all content of directory. expected \(content) but got \(matches)")
} catch {
XCTAssert(false, "Could not finish test due to error")
}
do {
let path: String = "/tmp"
var outName: String = ""
var matches: [String] = []
_ = path.completePath(into: &outName, caseSensitive: false, matchesInto: &matches, filterTypes: nil)
let urlToTmp = URL(fileURLWithPath: "/private/tmp/").standardized
_ = try FileManager.default.contentsOfDirectory(at: urlToTmp, includingPropertiesForKeys: nil, options: [])
XCTAssert(outName == "/tmp/", "If path could be completed to existing directory then outName is a string itself plus '/'.")
// This assert fails on CI; https://bugs.swift.org/browse/SR-389
// XCTAssert(matches.count == content.count && matches.count == count, "If NSString is valid path to directory then matches contain all content of directory. expected \(content) but got \(matches)")
} catch {
XCTAssert(false, "Could not finish test due to error")
}
let fileNames2 = [
NSTemporaryDirectory() + "ABC/",
NSTemporaryDirectory() + "ABCD/",
NSTemporaryDirectory() + "abcde"
]
guard ensureFiles(fileNames2) else {
XCTAssert(false, "Could not create temp files for testing.")
return
}
do {
let path: String = tmpPath("ABC")
var outName: String = ""
var matches: [String] = []
let count = path.completePath(into: &outName, caseSensitive: false, matchesInto: &matches, filterTypes: nil)
XCTAssert(stringsAreCaseInsensitivelyEqual(outName, path), "If NSString is valid path to directory then outName is string itself.")
XCTAssert(matches.count == count && count == fileNames2.count, "")
}
do {
let path: String = tmpPath("Test_completePathIntoString_01")
var outName: String = ""
var matches: [String] = []
let count = path.completePath(into: &outName, caseSensitive: true, matchesInto: &matches, filterTypes: nil)
XCTAssert(outName == path, "If NSString is valid path to file and search is case sensitive then outName is string itself.")
XCTAssert(matches.count == 1 && count == 1 && stringsAreCaseInsensitivelyEqual(matches[0], path), "If NSString is valid path to file and search is case sensitive then matches contain that file path only")
}
do {
let path: String = tmpPath("Test_completePathIntoString_01")
var outName: String = ""
var matches: [String] = []
let count = path.completePath(into: &outName, caseSensitive: false, matchesInto: &matches, filterTypes: nil)
XCTAssert(stringsAreCaseInsensitivelyEqual(outName, path), "If NSString is valid path to file and search is case insensitive then outName is string equal to self.")
XCTAssert(matches.count == 3 && count == 3, "Matches contain all files with similar name.")
}
do {
let path = tmpPath(NSUUID().uuidString)
var outName: String = ""
var matches: [String] = []
let count = path.completePath(into: &outName, caseSensitive: false, matchesInto: &matches, filterTypes: nil)
XCTAssert(outName == "", "If no matches found then outName is nil.")
XCTAssert(matches.count == 0 && count == 0, "If no matches found then return 0 and matches is empty.")
}
do {
let path: String = ""
var outName: String = ""
var matches: [String] = []
let count = path.completePath(into: &outName, caseSensitive: false, matchesInto: &matches, filterTypes: nil)
XCTAssert(outName == "", "If no matches found then outName is nil.")
XCTAssert(matches.count == 0 && count == 0, "If no matches found then return 0 and matches is empty.")
}
do {
let path: String = tmpPath("test_c")
var outName: String = ""
var matches: [String] = []
// case insensetive
let count = path.completePath(into: &outName, caseSensitive: false, matchesInto: &matches, filterTypes: nil)
XCTAssert(stringsAreCaseInsensitivelyEqual(outName, tmpPath("Test_completePathIntoString_0")), "If there are matches then outName should be longest common prefix of all matches.")
XCTAssert(matches.count == fileNames.count && count == fileNames.count, "If there are matches then matches array contains them.")
}
do {
let path: String = tmpPath("test_c")
var outName: String = ""
var matches: [String] = []
// case sensetive
let count = path.completePath(into: &outName, caseSensitive: true, matchesInto: &matches, filterTypes: nil)
XCTAssert(outName == tmpPath("test_completePathIntoString_0"), "If there are matches then outName should be longest common prefix of all matches.")
XCTAssert(matches.count == 4 && count == 4, "Supports case sensetive search")
}
do {
let path: String = tmpPath("test_c")
var outName: String = ""
var matches: [String] = []
// case sensetive
let count = path.completePath(into: &outName, caseSensitive: true, matchesInto: &matches, filterTypes: ["DAT"])
XCTAssert(outName == tmpPath("test_completePathIntoString_03.DAT"), "If there are matches then outName should be longest common prefix of all matches.")
XCTAssert(matches.count == 1 && count == 1, "Supports case sensetive search by extensions")
}
do {
let path: String = tmpPath("test_c")
var outName: String = ""
var matches: [String] = []
// type by filter
let count = path.completePath(into: &outName, caseSensitive: false, matchesInto: &matches, filterTypes: ["txt", "dat"])
XCTAssert(stringsAreCaseInsensitivelyEqual(outName, tmpPath("test_completePathIntoString_0")), "If there are matches then outName should be longest common prefix of all matches.")
XCTAssert(matches.count == 3 && count == 3, "Supports filtration by type")
}
do {
// will be resolved against current working directory that is directory there results of build process are stored
let path: String = "TestFoundation"
var outName: String = ""
var matches: [String] = []
let count = path.completePath(into: &outName, caseSensitive: false, matchesInto: &matches, filterTypes: nil)
// Build directory at least contains executable itself and *.swiftmodule directory
XCTAssert(matches.count == count && count >= 2, "Supports relative paths.")
XCTAssert(startWith(path, strings: matches), "For relative paths matches are relative too.")
}
// Next check has no sense on Linux due to case sensitive file system.
#if os(OSX)
guard ensureFiles([NSTemporaryDirectory() + "ABC/temp.txt"]) else {
XCTAssert(false, "Could not create temp files for testing.")
return
}
do {
let path: String = tmpPath("aBc/t")
var outName: String = ""
var matches: [String] = []
// type by filter
let count = path.completePath(into: &outName, caseSensitive: true, matchesInto: &matches, filterTypes: ["txt", "dat"])
XCTAssert(outName == tmpPath("aBc/temp.txt"), "outName starts with receiver.")
XCTAssert(matches.count >= 1 && count >= 1, "There are matches")
}
#endif
}
private func startWith(_ prefix: String, strings: [String]) -> Bool {
for item in strings {
guard item.hasPrefix(prefix) else {
return false
}
}
return true
}
private func stringsAreCaseInsensitivelyEqual(_ lhs: String, _ rhs: String) -> Bool {
return lhs.compare(rhs, options: .caseInsensitive) == .orderedSame
}
func test_stringByTrimmingCharactersInSet() {
let characterSet = CharacterSet.whitespaces
let string: NSString = " abc "
XCTAssertEqual(string.trimmingCharacters(in: characterSet), "abc")
let emojiString: NSString = " \u{1F62C} "
XCTAssertEqual(emojiString.trimmingCharacters(in: characterSet), "\u{1F62C}")
}
func test_initializeWithFormat() {
let argument: [CVarArg] = [42, 42.0]
withVaList(argument) {
pointer in
let string = NSString(format: "Value is %d (%.1f)", arguments: pointer)
XCTAssertEqual(string, "Value is 42 (42.0)")
}
}
func test_initializeWithFormat2() {
let argument: UInt8 = 75
let string = NSString(format: "%02X", argument)
XCTAssertEqual(string, "4B")
}
func test_initializeWithFormat3() {
let argument: [CVarArg] = [1000, 42.0]
withVaList(argument) {
pointer in
let string = NSString(format: "Default value is %d (%.1f)", locale: nil, arguments: pointer)
XCTAssertEqual(string, "Default value is 1000 (42.0)")
}
#if false // these two tests expose bugs in icu4c's localization on some linux builds (disable until we can get a uniform fix for this)
withVaList(argument) {
pointer in
let string = NSString(format: "en_GB value is %d (%.1f)", locale: Locale.init(localeIdentifier: "en_GB"), arguments: pointer)
XCTAssertEqual(string, "en_GB value is 1,000 (42.0)")
}
withVaList(argument) {
pointer in
let string = NSString(format: "de_DE value is %d (%.1f)", locale: Locale.init(localeIdentifier: "de_DE"), arguments: pointer)
XCTAssertEqual(string, "de_DE value is 1.000 (42,0)")
}
#endif
withVaList(argument) {
pointer in
let loc: NSDictionary = ["NSDecimalSeparator" as NSString : "&" as NSString]
let string = NSString(format: "NSDictionary value is %d (%.1f)", locale: loc, arguments: pointer)
XCTAssertEqual(string, "NSDictionary value is 1000 (42&0)")
}
}
func test_deletingLastPathComponent() {
do {
let path: NSString = "/tmp/scratch.tiff"
let result = path.deletingLastPathComponent
XCTAssertEqual(result, "/tmp")
}
do {
let path: NSString = "/tmp/lock/"
let result = path.deletingLastPathComponent
XCTAssertEqual(result, "/tmp")
}
do {
let path: NSString = "/tmp/"
let result = path.deletingLastPathComponent
XCTAssertEqual(result, "/")
}
do {
let path: NSString = "/tmp"
let result = path.deletingLastPathComponent
XCTAssertEqual(result, "/")
}
do {
let path: NSString = "/"
let result = path.deletingLastPathComponent
XCTAssertEqual(result, "/")
}
do {
let path: NSString = "scratch.tiff"
let result = path.deletingLastPathComponent
XCTAssertEqual(result, "")
}
do {
let path: NSString = "foo/bar"
let result = path.deletingLastPathComponent
XCTAssertEqual(result, "foo", "Relative path stays relative.")
}
}
func test_resolvingSymlinksInPath() {
do {
let path: NSString = "foo/bar"
let result = path.resolvingSymlinksInPath
XCTAssertEqual(result, "foo/bar", "For relative paths, symbolic links that can’t be resolved are left unresolved in the returned string.")
}
do {
let path: NSString = "/tmp/.."
let result = path.resolvingSymlinksInPath
#if os(OSX)
let expected = "/private"
#else
let expected = "/"
#endif
XCTAssertEqual(result, expected, "For absolute paths, all symbolic links are guaranteed to be removed.")
}
do {
let path: NSString = "tmp/.."
let result = path.resolvingSymlinksInPath
XCTAssertEqual(result, "tmp/..", "Parent links could be resolved for absolute paths only.")
}
do {
let path: NSString = "/tmp/"
let result = path.resolvingSymlinksInPath
XCTAssertEqual(result, "/tmp", "Result doesn't contain trailing slash.")
}
do {
let path: NSString = "http://google.com/search/.."
let result = path.resolvingSymlinksInPath
XCTAssertEqual(result, "http:/google.com/search/..", "resolvingSymlinksInPath treats receiver as file path always")
}
do {
let path: NSString = "file:///tmp/.."
let result = path.resolvingSymlinksInPath
XCTAssertEqual(result, "file:/tmp/..", "resolvingSymlinksInPath treats receiver as file path always")
}
}
func test_getCString_simple() {
let str: NSString = "foo"
var chars = [Int8](repeating:0xF, count:4)
let count = chars.count
let expected: [Int8] = [102, 111, 111, 0]
var res: Bool = false
chars.withUnsafeMutableBufferPointer() {
let ptr = $0.baseAddress!
res = str.getCString(ptr, maxLength: count, encoding: String.Encoding.ascii.rawValue)
}
XCTAssertTrue(res, "getCString should work on simple strings with ascii string encoding")
XCTAssertEqual(chars, expected, "getCString on \(str) should have resulted in \(expected) but got \(chars)")
}
func test_getCString_nonASCII_withASCIIAccessor() {
let str: NSString = "ƒoo"
var chars = [Int8](repeating:0xF, count:5)
let expected: [Int8] = [-58, -110, 111, 111, 0]
let count = chars.count
var res: Bool = false
chars.withUnsafeMutableBufferPointer() {
let ptr = $0.baseAddress!
res = str.getCString(ptr, maxLength: count, encoding: String.Encoding.ascii.rawValue)
}
XCTAssertFalse(res, "getCString should not work on non ascii strings accessing as ascii string encoding")
chars.withUnsafeMutableBufferPointer() {
let ptr = $0.baseAddress!
res = str.getCString(ptr, maxLength: count, encoding: String.Encoding.utf8.rawValue)
}
XCTAssertTrue(res, "getCString should work on UTF8 encoding")
XCTAssertEqual(chars, expected, "getCString on \(str) should have resulted in \(expected) but got \(chars)")
}
func test_NSHomeDirectoryForUser() {
let homeDir = NSHomeDirectoryForUser(nil)
let userName = NSUserName()
let homeDir2 = NSHomeDirectoryForUser(userName)
let homeDir3 = NSHomeDirectory()
XCTAssert(homeDir != nil && homeDir == homeDir2 && homeDir == homeDir3, "Could get user' home directory")
}
func test_expandingTildeInPath() {
do {
let path: NSString = "~"
let result = path.expandingTildeInPath
XCTAssert(result == NSHomeDirectory(), "Could resolve home directory for current user")
XCTAssertFalse(result.hasSuffix("/"), "Result have no trailing path separator")
}
do {
let path: NSString = "~/"
let result = path.expandingTildeInPath
XCTAssert(result == NSHomeDirectory(), "Could resolve home directory for current user")
XCTAssertFalse(result.hasSuffix("/"), "Result have no trailing path separator")
}
do {
let path = NSString(string: "~\(NSUserName())")
let result = path.expandingTildeInPath
XCTAssert(result == NSHomeDirectory(), "Could resolve home directory for specific user")
XCTAssertFalse(result.hasSuffix("/"), "Result have no trailing path separator")
}
do {
let userName = NSUUID().uuidString
let path = NSString(string: "~\(userName)/")
let result = path.expandingTildeInPath
// next assert fails in VirtualBox because home directory for unknown user resolved to /var/run/vboxadd
XCTAssert(result == "~\(userName)", "Return copy of reciver if home directory could no be resolved.")
}
}
func test_standardizingPath() {
// tmp is special because it is symlinked to /private/tmp and this /private prefix should be dropped,
// so tmp is tmp. On Linux tmp is not symlinked so it would be the same.
do {
let path: NSString = "/.//tmp/ABC/.."
let result = path.standardizingPath
XCTAssertEqual(result, "/tmp", "standardizingPath removes extraneous path components and resolve symlinks.")
}
do {
let path: NSString = "~"
let result = path.standardizingPath
let expected = NSHomeDirectory()
XCTAssertEqual(result, expected, "standardizingPath expanding initial tilde.")
}
do {
let path: NSString = "~/foo/bar/"
let result = path.standardizingPath
let expected = NSHomeDirectory() + "/foo/bar"
XCTAssertEqual(result, expected, "standardizingPath expanding initial tilde.")
}
// relative file paths depend on file path standardizing that is not yet implemented
do {
let path: NSString = "foo/bar"
let result = path.standardizingPath
XCTAssertEqual(NSString(string: result), path, "standardizingPath doesn't resolve relative paths")
}
// tmp is symlinked on OS X only
#if os(OSX)
do {
let path: NSString = "/tmp/.."
let result = path.standardizingPath
XCTAssertEqual(result, "/private")
}
#endif
do {
let path: NSString = "/tmp/ABC/.."
let result = path.standardizingPath
XCTAssertEqual(result, "/tmp", "parent links could be resolved for absolute paths")
}
do {
let path: NSString = "tmp/ABC/.."
let result = path.standardizingPath
XCTAssertEqual(NSString(string: result), path, "parent links could not be resolved for relative paths")
}
}
func test_addingPercentEncoding() {
let s1 = "a b".addingPercentEncoding(withAllowedCharacters: .alphanumerics)
XCTAssertEqual(s1, "a%20b")
let s2 = "\u{0434}\u{043E}\u{043C}".addingPercentEncoding(withAllowedCharacters: .alphanumerics)
XCTAssertEqual(s2, "%D0%B4%D0%BE%D0%BC")
}
func test_removingPercentEncodingInLatin() {
let s1 = "a%20b".removingPercentEncoding
XCTAssertEqual(s1, "a b")
let s2 = "a%1 b".removingPercentEncoding
XCTAssertNil(s2, "returns nil for a string with an invalid percent encoding")
}
func test_removingPercentEncodingInNonLatin() {
let s1 = "\u{043C}\u{043E}\u{0439}%20\u{0434}\u{043E}\u{043C}".removingPercentEncoding
XCTAssertEqual(s1, "\u{043C}\u{043E}\u{0439} \u{0434}\u{043E}\u{043C}")
let s2 = "%D0%B4%D0%BE%D0%BC".removingPercentEncoding
XCTAssertEqual(s2, "\u{0434}\u{043E}\u{043C}")
let s3 = "\u{00E0}a%1 b".removingPercentEncoding
XCTAssertNil(s3, "returns nil for a string with an invalid percent encoding")
}
func test_removingPersentEncodingWithoutEncoding() {
let cyrillicString = "\u{0434}\u{043E}\u{043C}"
let cyrillicEscapedString = cyrillicString.removingPercentEncoding
XCTAssertEqual(cyrillicString, cyrillicEscapedString)
let chineseString = "\u{623F}\u{5B50}"
let chineseEscapedString = chineseString.removingPercentEncoding
XCTAssertEqual(chineseString, chineseEscapedString)
let arabicString = "\u{0645}\u{0646}\u{0632}\u{0644}"
let arabicEscapedString = arabicString.removingPercentEncoding
XCTAssertEqual(arabicString, arabicEscapedString)
let randomString = "\u{00E0}\u{00E6}"
let randomEscapedString = randomString.removingPercentEncoding
XCTAssertEqual(randomString, randomEscapedString)
let latinString = "home"
let latinEscapedString = latinString.removingPercentEncoding
XCTAssertEqual(latinString, latinEscapedString)
}
func test_addingPercentEncodingAndBack() {
let latingString = "a b"
let escapedLatingString = latingString.addingPercentEncoding(withAllowedCharacters: .alphanumerics)
let returnedLatingString = escapedLatingString?.removingPercentEncoding
XCTAssertEqual(returnedLatingString, latingString)
let cyrillicString = "\u{0434}\u{043E}\u{043C}"
let escapedCyrillicString = cyrillicString.addingPercentEncoding(withAllowedCharacters: .alphanumerics)
let returnedCyrillicString = escapedCyrillicString?.removingPercentEncoding
XCTAssertEqual(returnedCyrillicString, cyrillicString)
}
func test_stringByAppendingPathExtension() {
let values = [
NSString(string: "/tmp/scratch.old") : "/tmp/scratch.old.tiff",
NSString(string: "/tmp/scratch.") : "/tmp/scratch..tiff",
NSString(string: "/tmp/") : "/tmp.tiff",
NSString(string: "/scratch") : "/scratch.tiff",
NSString(string: "/~scratch") : "/~scratch.tiff",
NSString(string: "scratch") : "scratch.tiff",
]
for (fileName, expectedResult) in values {
let result = fileName.appendingPathExtension("tiff")
XCTAssertEqual(result, expectedResult, "expected \(expectedResult) for \(fileName) but got \(result as Optional)")
}
}
func test_deletingPathExtension() {
let values : Dictionary = [
NSString(string: "/tmp/scratch.tiff") : "/tmp/scratch",
NSString(string: "/tmp/") : "/tmp",
NSString(string: "scratch.bundle") : "scratch",
NSString(string: "scratch..tiff") : "scratch.",
NSString(string: ".tiff") : ".tiff",
NSString(string: "/") : "/",
]
for (fileName, expectedResult) in values {
let result = fileName.deletingPathExtension
XCTAssertEqual(result, expectedResult, "expected \(expectedResult) for \(fileName) but got \(result)")
}
}
func test_ExternalRepresentation() {
// Ensure NSString can be used to create an external data representation
let UTF8Encoding = CFStringEncoding(kCFStringEncodingUTF8)
let UTF16Encoding = CFStringEncoding(kCFStringEncodingUTF16)
let ISOLatin1Encoding = CFStringEncoding(kCFStringEncodingISOLatin1)
do {
let string = unsafeBitCast(NSString(string: "this is an external string that should be representable by data"), to: CFString.self)
let UTF8Data = CFStringCreateExternalRepresentation(kCFAllocatorDefault, string, UTF8Encoding, 0)
let UTF8Length = CFDataGetLength(UTF8Data)
XCTAssertEqual(UTF8Length, 63, "NSString should successfully produce an external UTF8 representation with a length of 63 but got \(UTF8Length) bytes")
let UTF16Data = CFStringCreateExternalRepresentation(kCFAllocatorDefault, string, UTF16Encoding, 0)
let UTF16Length = CFDataGetLength(UTF16Data)
XCTAssertEqual(UTF16Length, 128, "NSString should successfully produce an external UTF16 representation with a length of 128 but got \(UTF16Length) bytes")
let ISOLatin1Data = CFStringCreateExternalRepresentation(kCFAllocatorDefault, string, ISOLatin1Encoding, 0)
let ISOLatin1Length = CFDataGetLength(ISOLatin1Data)
XCTAssertEqual(ISOLatin1Length, 63, "NSString should successfully produce an external ISOLatin1 representation with a length of 63 but got \(ISOLatin1Length) bytes")
}
do {
let string = unsafeBitCast(NSString(string: "🐢 encoding all the way down. 🐢🐢🐢"), to: CFString.self)
let UTF8Data = CFStringCreateExternalRepresentation(kCFAllocatorDefault, string, UTF8Encoding, 0)
let UTF8Length = CFDataGetLength(UTF8Data)
XCTAssertEqual(UTF8Length, 44, "NSString should successfully produce an external UTF8 representation with a length of 44 but got \(UTF8Length) bytes")
let UTF16Data = CFStringCreateExternalRepresentation(kCFAllocatorDefault, string, UTF16Encoding, 0)
let UTF16Length = CFDataGetLength(UTF16Data)
XCTAssertEqual(UTF16Length, 74, "NSString should successfully produce an external UTF16 representation with a length of 74 but got \(UTF16Length) bytes")
let ISOLatin1Data = CFStringCreateExternalRepresentation(kCFAllocatorDefault, string, ISOLatin1Encoding, 0)
XCTAssertNil(ISOLatin1Data)