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|
// RUN: %target-typecheck-verify-swift -strict-concurrency=complete -disable-availability-checking -parse-as-library
// RUN: %target-run-simple-swift( -Xfrontend -disable-availability-checking -parse-as-library)
// REQUIRES: concurrency
// REQUIRES: executable_test
// REQUIRES: concurrency_runtime
// rdar://78109470
// UNSUPPORTED: back_deployment_runtime
// UNSUPPORTED: freestanding
import _Concurrency
import StdlibUnittest
struct SomeError: Error, Equatable {
var value = Int.random(in: 0..<100)
}
class NotSendable {}
@MainActor func testWarnings() {
var x = 0
_ = AsyncStream {
x += 1 // expected-warning {{mutation of captured var 'x' in concurrently-executing code}}
return 0
}
_ = AsyncThrowingStream {
x += 1 // expected-warning {{mutation of captured var 'x' in concurrently-executing code}}
return
}
}
@MainActor var tests = TestSuite("AsyncStream")
@main struct Main {
static func main() async {
if #available(SwiftStdlib 5.5, *) {
final class Expectation: @unchecked Sendable {
var fulfilled = false
}
tests.test("factory method") {
let (stream, continuation) = AsyncStream.makeStream(of: String.self)
continuation.yield("hello")
var iterator = stream.makeAsyncIterator()
expectEqual(await iterator.next(isolation: #isolation), "hello")
}
tests.test("throwing factory method") {
let (stream, continuation) = AsyncThrowingStream.makeStream(of: String.self, throwing: Error.self)
continuation.yield("hello")
var iterator = stream.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
} catch {
expectUnreachable("unexpected error thrown")
}
}
tests.test("yield with no awaiting next") {
_ = AsyncStream(String.self) { continuation in
continuation.yield("hello")
}
}
tests.test("yield with no awaiting next throwing") {
_ = AsyncThrowingStream(String.self) { continuation in
continuation.yield("hello")
}
}
tests.test("yield with awaiting next") {
let series = AsyncStream(String.self) { continuation in
continuation.yield("hello")
}
var iterator = series.makeAsyncIterator()
expectEqual(await iterator.next(isolation: #isolation), "hello")
}
tests.test("yield with awaiting next throwing") {
let series = AsyncThrowingStream(String.self) { continuation in
continuation.yield("hello")
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
} catch {
expectUnreachable("unexpected error thrown")
}
}
tests.test("yield with awaiting next 2") {
let series = AsyncStream(String.self) { continuation in
continuation.yield("hello")
continuation.yield("world")
}
var iterator = series.makeAsyncIterator()
expectEqual(await iterator.next(isolation: #isolation), "hello")
expectEqual(await iterator.next(isolation: #isolation), "world")
}
tests.test("yield with awaiting next 2 throwing") {
let series = AsyncThrowingStream(String.self) { continuation in
continuation.yield("hello")
continuation.yield("world")
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
expectEqual(try await iterator.next(isolation: #isolation), "world")
} catch {
expectUnreachable("unexpected error thrown")
}
}
tests.test("yield with awaiting next 2 and finish") {
let series = AsyncStream(String.self) { continuation in
continuation.yield("hello")
continuation.yield("world")
continuation.finish()
}
var iterator = series.makeAsyncIterator()
expectEqual(await iterator.next(isolation: #isolation), "hello")
expectEqual(await iterator.next(isolation: #isolation), "world")
expectEqual(await iterator.next(isolation: #isolation), nil)
}
tests.test("yield with awaiting next 2 and finish throwing") {
let series = AsyncThrowingStream(String.self) { continuation in
continuation.yield("hello")
continuation.yield("world")
continuation.finish()
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
expectEqual(try await iterator.next(isolation: #isolation), "world")
expectEqual(try await iterator.next(isolation: #isolation), nil)
} catch {
expectUnreachable("unexpected error thrown")
}
}
tests.test("yield with awaiting next 2 and throw") {
let thrownError = SomeError()
let series = AsyncThrowingStream(String.self) { continuation in
continuation.yield("hello")
continuation.yield("world")
continuation.finish(throwing: thrownError)
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
expectEqual(try await iterator.next(isolation: #isolation), "world")
_ = try await iterator.next(isolation: #isolation)
expectUnreachable("expected thrown error")
} catch {
if let failure = error as? SomeError {
expectEqual(failure, thrownError)
} else {
expectUnreachable("unexpected error type")
}
}
}
tests.test("yield with no awaiting next detached") {
_ = AsyncStream(String.self) { continuation in
detach {
continuation.yield("hello")
}
}
}
tests.test("yield with no awaiting next detached throwing") {
_ = AsyncThrowingStream(String.self) { continuation in
detach {
continuation.yield("hello")
}
}
}
tests.test("yield with awaiting next detached") {
let series = AsyncStream(String.self) { continuation in
detach {
continuation.yield("hello")
}
}
var iterator = series.makeAsyncIterator()
expectEqual(await iterator.next(isolation: #isolation), "hello")
}
tests.test("yield with awaiting next detached throwing") {
let series = AsyncThrowingStream(String.self) { continuation in
detach {
continuation.yield("hello")
}
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
} catch {
expectUnreachable("unexpected error thrown")
}
}
tests.test("yield with awaiting next 2 detached") {
let series = AsyncStream(String.self) { continuation in
detach {
continuation.yield("hello")
continuation.yield("world")
}
}
var iterator = series.makeAsyncIterator()
expectEqual(await iterator.next(isolation: #isolation), "hello")
expectEqual(await iterator.next(isolation: #isolation), "world")
}
tests.test("yield with awaiting next 2 detached throwing") {
let series = AsyncThrowingStream(String.self) { continuation in
detach {
continuation.yield("hello")
continuation.yield("world")
}
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
expectEqual(try await iterator.next(isolation: #isolation), "world")
} catch {
expectUnreachable("unexpected error thrown")
}
}
tests.test("yield with awaiting next 2 and finish detached") {
let series = AsyncStream(String.self) { continuation in
detach {
continuation.yield("hello")
continuation.yield("world")
continuation.finish()
}
}
var iterator = series.makeAsyncIterator()
expectEqual(await iterator.next(isolation: #isolation), "hello")
expectEqual(await iterator.next(isolation: #isolation), "world")
expectEqual(await iterator.next(isolation: #isolation), nil)
}
tests.test("yield with awaiting next 2 and finish detached throwing") {
let series = AsyncThrowingStream(String.self) { continuation in
detach {
continuation.yield("hello")
continuation.yield("world")
continuation.finish()
}
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
expectEqual(try await iterator.next(isolation: #isolation), "world")
expectEqual(try await iterator.next(isolation: #isolation), nil)
} catch {
expectUnreachable("unexpected error thrown")
}
}
tests.test("yield with awaiting next 2 and throw detached") {
let thrownError = SomeError()
let series = AsyncThrowingStream(String.self) { continuation in
detach {
continuation.yield("hello")
continuation.yield("world")
continuation.finish(throwing: thrownError)
}
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
expectEqual(try await iterator.next(isolation: #isolation), "world")
_ = try await iterator.next(isolation: #isolation)
expectUnreachable("expected thrown error")
} catch {
if let failure = error as? SomeError {
expectEqual(failure, thrownError)
} else {
expectUnreachable("unexpected error type")
}
}
}
tests.test("yield with awaiting next 2 and finish detached with value after finish") {
let series = AsyncStream(String.self) { continuation in
detach {
continuation.yield("hello")
continuation.yield("world")
continuation.finish()
continuation.yield("This should not be emitted")
}
}
var iterator = series.makeAsyncIterator()
expectEqual(await iterator.next(isolation: #isolation), "hello")
expectEqual(await iterator.next(isolation: #isolation), "world")
expectEqual(await iterator.next(isolation: #isolation), nil)
expectEqual(await iterator.next(isolation: #isolation), nil)
}
tests.test("yield with awaiting next 2 and finish detached with value after finish throwing") {
let series = AsyncThrowingStream(String.self) { continuation in
detach {
continuation.yield("hello")
continuation.yield("world")
continuation.finish()
continuation.yield("This should not be emitted")
}
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
expectEqual(try await iterator.next(isolation: #isolation), "world")
expectEqual(try await iterator.next(isolation: #isolation), nil)
expectEqual(try await iterator.next(isolation: #isolation), nil)
} catch {
expectUnreachable("unexpected error thrown")
}
}
tests.test("yield with awaiting next 2 and finish detached with throw after finish throwing") {
let thrownError = SomeError()
let series = AsyncThrowingStream(String.self) { continuation in
detach {
continuation.yield("hello")
continuation.yield("world")
continuation.finish()
continuation.finish(throwing: thrownError)
}
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
expectEqual(try await iterator.next(isolation: #isolation), "world")
expectEqual(try await iterator.next(isolation: #isolation), nil)
expectEqual(try await iterator.next(isolation: #isolation), nil)
} catch {
expectUnreachable("unexpected error thrown")
}
}
tests.test("yield with awaiting next 2 and finish with throw after finish throwing") {
let thrownError = SomeError()
let series = AsyncThrowingStream(String.self) { continuation in
continuation.yield("hello")
continuation.yield("world")
continuation.finish()
continuation.finish(throwing: thrownError)
}
var iterator = series.makeAsyncIterator()
do {
expectEqual(try await iterator.next(isolation: #isolation), "hello")
expectEqual(try await iterator.next(isolation: #isolation), "world")
expectEqual(try await iterator.next(isolation: #isolation), nil)
expectEqual(try await iterator.next(isolation: #isolation), nil)
} catch {
expectUnreachable("unexpected error thrown")
}
}
tests.test("cancellation behavior on deinit with no values being awaited") {
let expectation = Expectation()
func scopedLifetime(_ expectation: Expectation) {
_ = AsyncStream(String.self) { continuation in
continuation.onTermination = { @Sendable _ in expectation.fulfilled = true }
}
}
scopedLifetime(expectation)
expectTrue(expectation.fulfilled)
}
tests.test("termination behavior on deinit with no values being awaited") {
let expectation = Expectation()
func scopedLifetime(_ expectation: Expectation) {
_ = AsyncStream(String.self) { continuation in
continuation.onTermination = { @Sendable _ in expectation.fulfilled = true }
continuation.finish()
}
}
scopedLifetime(expectation)
expectTrue(expectation.fulfilled)
}
tests.test("cancellation behavior on deinit with no values being awaited") {
let expectation = Expectation()
func scopedLifetime(_ expectation: Expectation) {
_ = AsyncStream(String.self) { continuation in
continuation.onTermination = { @Sendable terminal in
switch terminal {
case .cancelled:
expectation.fulfilled = true
default: break
}
}
}
}
scopedLifetime(expectation)
expectTrue(expectation.fulfilled)
}
tests.test("cancellation behavior on deinit with no values being awaited throwing") {
let expectation = Expectation()
func scopedLifetime(_ expectation: Expectation) {
_ = AsyncThrowingStream(String.self) { continuation in
continuation.onTermination = { @Sendable terminal in
switch terminal {
case .cancelled:
expectation.fulfilled = true
default: break
}
}
}
}
scopedLifetime(expectation)
expectTrue(expectation.fulfilled)
}
await runAllTestsAsync()
}
}
}
|
