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//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2023 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for Swift project authors
//
@testable import Testing
private import _TestingInternals
@Suite("Locked Tests")
struct LockTests {
func testLock<L>(_ lock: LockedWith<L, Int>) {
#expect(lock.rawValue == 0)
lock.withLock { value in
value = 1
}
#expect(lock.rawValue == 1)
}
@Test("Platform-default lock")
func locking() {
testLock(Locked(rawValue: 0))
}
#if SWT_TARGET_OS_APPLE && !SWT_NO_OS_UNFAIR_LOCK
@Test("pthread_mutex_t (Darwin alternate)")
func lockingWith_pthread_mutex_t() {
testLock(LockedWith<pthread_mutex_t, Int>(rawValue: 0))
}
#endif
@Test("No lock")
func noLock() async {
let lock = LockedWith<Never, Int>(rawValue: 0)
await withTaskGroup { taskGroup in
for _ in 0 ..< 100_000 {
taskGroup.addTask {
lock.increment()
}
}
}
#expect(lock.rawValue != 100_000)
}
@Test("Get the underlying lock")
func underlyingLock() {
let lock = Locked(rawValue: 0)
testLock(lock)
lock.withUnsafeUnderlyingLock { underlyingLock, _ in
DefaultLock.unsafelyRelinquishLock(at: underlyingLock)
lock.withLock { value in
value += 1000
}
DefaultLock.unsafelyAcquireLock(at: underlyingLock)
}
#expect(lock.rawValue == 1001)
}
}
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