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// RUN: %target-run-simple-swift( -Xfrontend -disable-availability-checking %import-libdispatch -parse-as-library) | %FileCheck %s --dump-input always
// REQUIRES: executable_test
// REQUIRES: concurrency
// REQUIRES: libdispatch
// rdar://76038845
// REQUIRES: concurrency_runtime
// UNSUPPORTED: back_deployment_runtime
import _Concurrency
// FIXME: should not depend on Dispatch
import Dispatch
@available(SwiftStdlib 5.1, *)
@main struct Main {
static let pause = 500_000_000 // 500ms
static func main() async {
await testSleepDuration()
await testSleepDoesNotBlock()
}
static func testSleepDuration() async {
let start = DispatchTime.now()
await Task.sleep(UInt64(pause))
let stop = DispatchTime.now()
// assert that at least the specified time passed since calling `sleep`
assert(stop >= (start + .nanoseconds(pause)))
}
static func testSleepDoesNotBlock() async {
// FIXME: Should run on main executor
let task = detach {
print("Run first")
}
await Task.sleep(UInt64(pause))
print("Run second")
// CHECK: Run first
// CHECK: Run second
await task.get()
}
}
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