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106 lines
3.3 KiB
Swift
106 lines
3.3 KiB
Swift
// RUN: %target-run-simple-swift
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// REQUIRES: executable_test
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// REQUIRES: objc_interop
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import Foundation
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import StdlibUnittest
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var StringBridgeTests = TestSuite("StringBridgeTests")
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extension String {
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init(fromCocoa s: String) {
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self = (s as NSString) as String
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}
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}
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func expectSmall(_ str: String,
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stackTrace: SourceLocStack = SourceLocStack(),
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showFrame: Bool = true,
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file: String = #file, line: UInt = #line
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) {
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switch str._classify()._form {
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case ._small: return
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default: expectationFailure("expected: small", trace: "",
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stackTrace: stackTrace.pushIf(showFrame, file: file, line: line))
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}
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}
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func expectCocoa(_ str: String,
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stackTrace: SourceLocStack = SourceLocStack(),
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showFrame: Bool = true,
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file: String = #file, line: UInt = #line
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) {
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switch str._classify()._form {
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case ._cocoa: return
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default: expectationFailure("expected: cocoa", trace: "",
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stackTrace: stackTrace.pushIf(showFrame, file: file, line: line))
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}
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}
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StringBridgeTests.test("Tagged NSString") {
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guard #available(macOS 10.13, iOS 11.0, tvOS 11.0, *) else { return }
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#if arch(i386) || arch(arm)
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#else
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// Bridge tagged strings as small
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expectSmall((("0123456" as NSString) as String))
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expectSmall((("012345678" as NSString) as String))
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expectSmall((("aaaaaaaaaaa" as NSString) as String))
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expectSmall((("bbbbbbbbb" as NSString) as String))
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// Bridge non-tagged as non-small even if they fit, for fear of losing
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// associated information
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let bigAs = ("aaaaaaaaaaaa" as NSString) as String
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let bigBs = ("bbbbbbbbbb" as NSString) as String
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let bigQs = ("????????" as NSString) as String
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expectCocoa(bigAs)
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expectCocoa(bigBs)
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expectCocoa(bigQs)
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#if false // TODO(SR-7594): re-enable
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let littleAsNSString = ("aa" as NSString)
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var littleAs = littleAsNSString as String
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// But become small when appended to
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expectSmall(bigAs + "c")
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expectSmall(bigBs + "c")
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expectSmall("a\(bigAs)")
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expectSmall("a\(bigBs)")
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expectSmall(littleAs + bigQs)
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expectSmall(bigQs + littleAs)
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expectSmall("\(littleAs)bigQs\(littleAs)")
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#endif // false
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#endif // not 32bit
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}
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func returnOne<T>(_ t: T) -> Int { return 1 }
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StringBridgeTests.test("Character from NSString") {
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guard #available(macOS 9999, iOS 9999, watchOS 9999, tvOS 9999, *) else { return }
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// NOTE: Using hard-coded literals to directly construct NSStrings
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let ns1 = "A" as NSString
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let ns2 = "A\u{301}" as NSString
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let ns3 = "𓁹͇͈͉͍͎͊͋͌ͧͨͩͪͫͬͭͮ͏̛͓͔͕͖͙͚̗̘̙̜̹̺̻̼͐͑͒͗͛ͣͤͥͦ̽̾̿̀́͂̓̈́͆ͧͨͩͪͫͬͭͮ͘̚͜͟͢͝͞͠͡ͅ" as NSString
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let c1 = Character(ns1 as String)
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let c2 = Character(ns2 as String)
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let c3 = Character(ns3 as String)
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expectEqual("A", String(c1))
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expectNotNil(String(c1).utf8.withContiguousStorageIfAvailable(returnOne))
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expectEqual("A\u{301}", String(c2))
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expectNotNil(String(c2).utf8.withContiguousStorageIfAvailable(returnOne))
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expectNil((ns2 as String).utf8.withContiguousStorageIfAvailable(returnOne))
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expectEqual("𓁹͇͈͉͍͎͊͋͌ͧͨͩͪͫͬͭͮ͏̛͓͔͕͖͙͚̗̘̙̜̹̺̻̼͐͑͒͗͛ͣͤͥͦ̽̾̿̀́͂̓̈́͆ͧͨͩͪͫͬͭͮ͘̚͜͟͢͝͞͠͡ͅ", String(c3))
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expectNotNil(String(c3).utf8.withContiguousStorageIfAvailable(returnOne))
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expectNil((ns3 as String).utf8.withContiguousStorageIfAvailable(returnOne))
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}
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runAllTests()
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