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74 lines
1.9 KiB
Swift
74 lines
1.9 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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expectTrue(str._guts._isSmall,
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stackTrace: stackTrace, showFrame: showFrame, file: file, line: line)
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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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expectTrue(str._guts._isCocoa,
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stackTrace: stackTrace, showFrame: showFrame, file: file, line: line)
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}
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StringBridgeTests.test("Tagged NSString") {
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guard #available(iOS 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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runAllTests()
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