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// RUN: %empty-directory(%t)
// RUN: %target-build-swift -target %target-swift-5.1-abi-triple -parse-as-library %s -o %t/a.out
// RUN: %target-codesign %t/a.out
// RUN: env %env-SWIFT_DEBUG_VALIDATE_UNCHECKED_CONTINUATIONS=1 %target-run %t/a.out
// REQUIRES: executable_test
// REQUIRES: concurrency
// REQUIRES: concurrency_runtime
// UNSUPPORTED: back_deployment_runtime
// Commit afc5116ef0de added support for the error check
// UNSUPPORTED: back_deploy_concurrency
// UNSUPPORTED: use_os_stdlib
// UNSUPPORTED: freestanding
// UNSUPPORTED: OS=wasi
import StdlibUnittest
@MainActor
@available(SwiftStdlib 5.1, *)
func test_isolation_withUnsafeContinuation() async {
// This test specifically should have only one suspension point,
// as it would trigger a problem with the previous @_unsafeInheritExecutor
// implementation, where we optimize away a switch accidentally, causing
// wrong isolation.
await withUnsafeContinuation { continuation in
MainActor.shared.assertIsolated() // OK
continuation.resume(returning: ())
}
}
@MainActor
@available(SwiftStdlib 5.1, *)
func test_isolation_withUnsafeThrowingContinuation() async {
// See comment in `test_isolation_withUnsafeContinuation` about exact test case shape
try! await withUnsafeThrowingContinuation { continuation in
MainActor.shared.assertIsolated() // OK
continuation.resume(returning: ())
}
}
@MainActor
@available(SwiftStdlib 5.1, *)
func test_isolation_withCheckedContinuation() async {
// See comment in `test_isolation_withUnsafeContinuation` about exact test case shape
await withCheckedContinuation { continuation in
MainActor.shared.assertIsolated() // OK
continuation.resume(returning: ())
}
}
@MainActor
@available(SwiftStdlib 5.1, *)
func test_isolation_withCheckedThrowingContinuation() async {
// See comment in `test_isolation_withUnsafeContinuation` about exact test case shape
try! await withCheckedThrowingContinuation { continuation in
MainActor.shared.assertIsolated() // OK
continuation.resume(returning: ())
}
}
@main struct Main {
static func main() async {
let tests = TestSuite("ContinuationValidation")
if #available(SwiftStdlib 5.1, *) {
tests.test("withUnsafeThrowingContinuation: continuation should be on calling isolation") {
await Task.detached {
await test_isolation_withUnsafeThrowingContinuation()
}.value
}
tests.test("withUnsafeContinuation: continuation should be on calling isolation") {
await Task.detached {
await test_isolation_withUnsafeContinuation()
}.value
}
tests.test("withCheckedContinuation: continuation should be on calling isolation") {
await Task.detached {
await test_isolation_withCheckedContinuation()
}.value
}
tests.test("withCheckedThrowingContinuation: continuation should be on calling isolation") {
await Task.detached {
await test_isolation_withCheckedThrowingContinuation()
}.value
}
tests.test("trap on double resume of unchecked continuation") {
expectCrashLater(withMessage: "may have already been resumed")
await withUnsafeContinuation { c in
c.resume(returning: ())
c.resume(returning: ())
}
}
}
await runAllTestsAsync()
}
}
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