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//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftNIO open source project
//
// Copyright (c) 2020 Apple Inc. and the SwiftNIO project authors
// Licensed under Apache License v2.0
//
// See LICENSE.txt for license information
// See CONTRIBUTORS.txt for the list of SwiftNIO project authors
//
// SPDX-License-Identifier: Apache-2.0
//
//===----------------------------------------------------------------------===//
import NIO
fileprivate let group = MultiThreadedEventLoopGroup(numberOfThreads: 2)
struct EventLoopCrashTests {
let testMultiThreadedELGCrashesOnZeroThreads = CrashTest(
regex: "Precondition failed: numberOfThreads must be positive"
) {
try? MultiThreadedEventLoopGroup(numberOfThreads: 0).syncShutdownGracefully()
}
let testWaitCrashesWhenOnEL = CrashTest(
regex: #"Precondition failed: BUG DETECTED: wait\(\) must not be called when on an EventLoop"#
) {
let promise = group.next().makePromise(of: Void.self)
try? group.next().submit {
try? promise.futureResult.wait()
}.wait()
}
let testAssertInEventLoop = CrashTest(
regex: "Precondition failed"
) {
group.next().assertInEventLoop(file: "DUMMY", line: 42)
}
let testPreconditionInEventLoop = CrashTest(
regex: "Precondition failed"
) {
group.next().preconditionInEventLoop(file: "DUMMY", line: 42)
}
let testAssertNotInEventLoop = CrashTest(
regex: "Precondition failed"
) {
let el = group.next()
try? el.submit {
el.assertNotInEventLoop(file: "DUMMY", line: 42)
}.wait()
}
let testPreconditionNotInEventLoop = CrashTest(
regex: "Precondition failed"
) {
let el = group.next()
try? el.submit {
el.preconditionNotInEventLoop(file: "DUMMY", line: 42)
}.wait()
}
let testSchedulingEndlesslyInELShutdown = CrashTest(
regex: #"Precondition failed: EventLoop SelectableEventLoop \{ .* \} didn't quiesce after 1000 ticks."#
) {
let group = MultiThreadedEventLoopGroup.init(numberOfThreads: 1)
defer {
try? group.syncShutdownGracefully()
exit(4)
}
let el = group.next()
el.scheduleTask(in: .hours(7)) {
// Will never happen.
exit(1)
}.futureResult.whenFailure { error in
guard case .some(.shutdown) = error as? EventLoopError else {
exit(2)
}
func f() {
el.scheduleTask(in: .nanoseconds(0)) { [f /* to make 5.1 compiler not crash */] in
f()
}.futureResult.whenFailure { [f /* to make 5.1 compiler not crash */] error in
guard case .some(.shutdown) = error as? EventLoopError else {
exit(3)
}
f()
}
}
f()
}
}
}
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