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// RUN: %target-run-simple-swift( -Xfrontend -disable-availability-checking %import-libdispatch -parse-as-library)
// REQUIRES: executable_test
// REQUIRES: concurrency
// REQUIRES: libdispatch
// rdar://76038845
// REQUIRES: concurrency_runtime
// UNSUPPORTED: back_deployment_runtime
import Dispatch
enum HomeworkError: Error, Equatable {
case dogAteIt(String)
}
@available(SwiftStdlib 5.1, *)
func formGreeting(name: String) async -> String {
return "Hello \(name) from async world"
}
@available(SwiftStdlib 5.1, *)
func testSimple(
name: String, dogName: String, shouldThrow: Bool, doSuspend: Bool
) async {
print("Testing name: \(name), dog: \(dogName), shouldThrow: \(shouldThrow) doSuspend: \(doSuspend)")
var completed = false
let taskHandle: Task.Handle<String, Error> = detach {
let greeting = await formGreeting(name: name)
// If the intent is to test suspending, wait a bit so the second task
// can complete.
if doSuspend {
print("- Future sleeping")
await Task.sleep(1_000_000_000)
}
if (shouldThrow) {
print("- Future throwing")
throw HomeworkError.dogAteIt(dogName + " the dog")
}
print("- Future returning normally")
return greeting + "!"
}
// If the intent is not to test suspending, wait a bit so the first task
// can complete.
if !doSuspend {
print("+ Reader sleeping")
await Task.sleep(1_000_000_000)
}
do {
print("+ Reader waiting for the result")
let result = try await taskHandle.get()
completed = true
print("+ Normal return: \(result)")
assert(result == "Hello \(name) from async world!")
} catch HomeworkError.dogAteIt(let badDog) {
completed = true
print("+ Error return: HomeworkError.dogAteIt(\(badDog))")
assert(badDog == dogName + " the dog")
} catch {
fatalError("Caught a different exception?")
}
assert(completed)
print("Finished test")
}
@available(SwiftStdlib 5.1, *)
@main struct Main {
static func main() async {
await testSimple(name: "Ted", dogName: "Hazel", shouldThrow: false, doSuspend: false)
await testSimple(name: "Ted", dogName: "Hazel", shouldThrow: true, doSuspend: false)
await testSimple(name: "Ted", dogName: "Hazel", shouldThrow: false, doSuspend: true)
await testSimple(name: "Ted", dogName: "Hazel", shouldThrow: true, doSuspend: true)
print("Done")
}
}
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