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// RUN: %empty-directory(%t)
// RUN: cp %s %t/main.swift
// RUN: %target-build-swift -Xfrontend -disable-access-control -module-name a %t/main.swift %S/../Inputs/SmallStringTestUtilities.swift -o %t.out -O
// RUN: %target-codesign %t.out
// RUN: %target-run %t.out
// REQUIRES: executable_test
// REQUIRES: objc_interop
import Foundation
import StdlibUnittest
var StringBridgeTests = TestSuite("StringBridgeTests")
extension String {
init(fromCocoa s: String) {
self = (s as NSString) as String
}
}
StringBridgeTests.test("Tagged NSString") {
guard #available(macOS 10.13, iOS 11.0, tvOS 11.0, *) else { return }
#if _pointerBitWidth(_64)
// Bridge tagged strings as small
expectSmall((("0123456" as NSString) as String))
expectSmall((("012345678" as NSString) as String))
expectSmall((("aaaaaaaaaaa" as NSString) as String))
expectSmall((("bbbbbbbbb" as NSString) as String))
// Bridge non-tagged as non-small even if they fit, for fear of losing
// associated information
let bigAs = ("aaaaaaaaaaaa" as NSString) as String
let bigBs = ("bbbbbbbbbb" as NSString) as String
let bigQs = ("????????" as NSString) as String
expectCocoa(bigAs)
expectCocoa(bigBs)
expectCocoa(bigQs)
#if false // FIXME: Re-enable (https://github.com/apple/swift/issues/50136)
let littleAsNSString = ("aa" as NSString)
var littleAs = littleAsNSString as String
// But become small when appended to
expectSmall(bigAs + "c")
expectSmall(bigBs + "c")
expectSmall("a\(bigAs)")
expectSmall("a\(bigBs)")
expectSmall(littleAs + bigQs)
expectSmall(bigQs + littleAs)
expectSmall("\(littleAs)bigQs\(littleAs)")
#endif // false
#endif // not 32bit
}
StringBridgeTests.test("Constant NSString New SPI") {
if #available(SwiftStdlib 6.1, *) {
//21 characters long so avoids _SmallString
let constantString:NSString = CFRunLoopMode.commonModes.rawValue as NSString
let regularBridged = constantString as String
let count = regularBridged.count
let bridged = String(
_immortalCocoaString: constantString,
count: count,
encoding: Unicode.ASCII.self
)
let reverseBridged = bridged as NSString
expectEqual(constantString, reverseBridged)
expectEqual(
ObjectIdentifier(constantString),
ObjectIdentifier(reverseBridged)
)
expectEqual(bridged, regularBridged)
}
}
StringBridgeTests.test("Shared String SPI")
.require(.stdlib_6_2)
.code {
guard #available(SwiftStdlib 6.2, *) else { return }
func test(literal: String, isASCII: Bool) {
let baseCount = literal.utf8.count
literal.withCString { intptr in
intptr.withMemoryRebound(to: UInt8.self, capacity: baseCount) { ptr in
let fullBuffer = UnsafeBufferPointer(start: ptr, count: baseCount)
let fullString = _SwiftCreateImmortalString_ForFoundation(
buffer: fullBuffer,
isASCII: isASCII
)
expectNotNil(fullString)
let bridgedFullString = (fullString! as NSString)
let fullCString = bridgedFullString.utf8String!
expectEqual(baseCount, strlen(fullCString))
expectEqual(strcmp(ptr, fullCString), 0)
let fullCString2 = bridgedFullString.utf8String!
expectEqual(fullCString, fullCString2) //if we're already terminated, we can return the contents pointer as-is
withExtendedLifetime(fullString) {}
}
}
}
test(literal: "abcdefghijklmnopqrstuvwxyz", isASCII: true)
test(literal: "abcdëfghijklmnopqrstuvwxyz", isASCII: false)
}
StringBridgeTests.test("Bridging") {
// Test bridging retains small string form
func bridge(_ small: _SmallString) -> String {
return String(_StringGuts(small))._bridgeToObjectiveCImpl() as! String
}
func runTestSmall(_ input: String) throws {
// Constructed through CF
guard let fromCocoaSmall = _SmallString(
_cocoaString: input as NSString
) else {
throw "Didn't fit"
}
verifySmallString(fromCocoaSmall, input)
verifySmallString(fromCocoaSmall, bridge(fromCocoaSmall))
}
// Pass tests
#if _pointerBitWidth(_64)
if #available(macOS 10.15, iOS 13, *) {
expectDoesNotThrow({ try runTestSmall("abc") })
expectDoesNotThrow({ try runTestSmall("defghijk") })
expectDoesNotThrow({ try runTestSmall("aaaaaaaaaaa") })
} else if #available(macOS 10.10, iOS 9, *) {
// FIXME: tests temporarily disabled on these OS versions
// due to failing in CI. rdar://problem/54875979
} else {
// OS X 10.9, iOS 7/8 did not have tagged strings
expectThrows("Didn't fit", { try runTestSmall("abc") })
expectThrows("Didn't fit", { try runTestSmall("defghijk") })
expectThrows("Didn't fit", { try runTestSmall("aaaaaaaaaaa") })
}
#endif
// Fail tests
//
expectThrows("Didn't fit", { try runTestSmall("\u{0}") })
expectThrows("Didn't fit", { try runTestSmall("0123456789abcde") })
expectThrows("Didn't fit", { try runTestSmall("👨👦abcd") })
expectThrows("Didn't fit", { try runTestSmall("👨👦") })
expectThrows("Didn't fit", { try runTestSmall("👨👩👦") })
expectThrows("Didn't fit", { try runTestSmall("👨👦abcde") })
}
func returnOne<T>(_ t: T) -> Int { return 1 }
StringBridgeTests.test("Character from NSString") {
guard #available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *) else { return }
// NOTE: Using hard-coded literals to directly construct NSStrings
let ns1 = "A" as NSString
let ns2 = "A\u{301}" as NSString
let ns3 = "𓁹͇͈͉͍͎͊͋͌ͧͨͩͪͫͬͭͮ͏̛͓͔͕͖͙͚̗̘̙̜̹̺̻̼͐͑͒͗͛ͣͤͥͦ̽̾̿̀́͂̓̈́͆ͧͨͩͪͫͬͭͮ͘̚͜͟͢͝͞͠͡ͅ" as NSString
let c1 = Character(ns1 as String)
let c2 = Character(ns2 as String)
let c3 = Character(ns3 as String)
expectEqual("A", String(c1))
expectNotNil(String(c1).utf8.withContiguousStorageIfAvailable(returnOne))
expectEqual("A\u{301}", String(c2))
expectNotNil(String(c2).utf8.withContiguousStorageIfAvailable(returnOne))
expectNil((ns2 as String).utf8.withContiguousStorageIfAvailable(returnOne))
expectEqual("𓁹͇͈͉͍͎͊͋͌ͧͨͩͪͫͬͭͮ͏̛͓͔͕͖͙͚̗̘̙̜̹̺̻̼͐͑͒͗͛ͣͤͥͦ̽̾̿̀́͂̓̈́͆ͧͨͩͪͫͬͭͮ͘̚͜͟͢͝͞͠͡ͅ", String(c3))
expectNotNil(String(c3).utf8.withContiguousStorageIfAvailable(returnOne))
expectNil((ns3 as String).utf8.withContiguousStorageIfAvailable(returnOne))
}
StringBridgeTests.test("lengthOfBytes(using:)") {
let ascii = "The quick brown fox jumps over the lazy dog"
let utf8 = "The quick brown fox jümps over the lazy dog"
let asciiAsASCIILen = ascii.lengthOfBytes(using: .ascii)
let asciiAsUTF8Len = ascii.lengthOfBytes(using: .utf8)
let asciiAsUTF16Len = ascii.lengthOfBytes(using: .utf16)
let asciiAsMacRomanLen = ascii.lengthOfBytes(using: .macOSRoman)
let utf8AsASCIILen = utf8.lengthOfBytes(using: .ascii)
let utf8AsUTF8Len = utf8.lengthOfBytes(using: .utf8)
let utf8AsUTF16Len = utf8.lengthOfBytes(using: .utf16)
let utf8AsMacRomanLen = utf8.lengthOfBytes(using: .macOSRoman)
expectEqual(asciiAsASCIILen, 43)
expectEqual(asciiAsUTF8Len, 43)
expectEqual(asciiAsUTF16Len, 86)
expectEqual(asciiAsMacRomanLen, 43)
expectEqual(utf8AsASCIILen, 0)
expectEqual(utf8AsUTF8Len, 44)
expectEqual(utf8AsUTF16Len, 86)
expectEqual(utf8AsMacRomanLen, 43)
}
runAllTests()
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