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DefaultsTests.swift
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DefaultsTests.swift
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// swiftlint:disable discouraged_optional_boolean
import Foundation
import Combine
import XCTest
@testable import Defaults
let fixtureURL = URL(string: "https://sindresorhus.com")!
let fixtureFileURL = URL(string: "file://~/icon.png")!
let fixtureURL2 = URL(string: "https://example.com")!
let fixtureDate = Date()
extension Defaults.Keys {
static let key = Key<Bool>("key", default: false)
static let url = Key<URL>("url", default: fixtureURL)
static let file = Key<URL>("fileURL", default: fixtureFileURL)
static let data = Key<Data>("data", default: Data([]))
static let date = Key<Date>("date", default: fixtureDate)
static let uuid = Key<UUID?>("uuid")
static let defaultDynamicDate = Key<Date>("defaultDynamicOptionalDate") { Date(timeIntervalSince1970: 0) }
static let defaultDynamicOptionalDate = Key<Date?>("defaultDynamicOptionalDate") { Date(timeIntervalSince1970: 1) }
}
final class DefaultsTests: XCTestCase {
override func setUp() {
super.setUp()
Defaults.removeAll()
}
override func tearDown() {
super.tearDown()
Defaults.removeAll()
}
func testKey() {
let key = Defaults.Key<Bool>("independentKey", default: false)
XCTAssertFalse(Defaults[key])
Defaults[key] = true
XCTAssertTrue(Defaults[key])
}
func testValidKeyName() {
let validKey = Defaults.Key<Bool>("test", default: false)
let containsDotKey = Defaults.Key<Bool>("test.a", default: false)
let startsWithAtKey = Defaults.Key<Bool>("@test", default: false)
XCTAssertTrue(Defaults.isValidKeyPath(name: validKey.name))
XCTAssertFalse(Defaults.isValidKeyPath(name: containsDotKey.name))
XCTAssertFalse(Defaults.isValidKeyPath(name: startsWithAtKey.name))
}
func testOptionalKey() {
let key = Defaults.Key<Bool?>("independentOptionalKey")
let url = Defaults.Key<URL?>("independentOptionalURLKey")
XCTAssertNil(Defaults[key])
XCTAssertNil(Defaults[url])
Defaults[key] = true
Defaults[url] = fixtureURL
XCTAssertTrue(Defaults[key]!)
XCTAssertEqual(Defaults[url], fixtureURL)
Defaults[key] = nil
Defaults[url] = nil
XCTAssertNil(Defaults[key])
XCTAssertNil(Defaults[url])
Defaults[key] = false
Defaults[url] = fixtureURL2
XCTAssertFalse(Defaults[key]!)
XCTAssertEqual(Defaults[url], fixtureURL2)
}
func testInitializeDynamicDateKey() {
_ = Defaults.Key<Date>("independentInitializeDynamicDateKey") {
XCTFail("Init dynamic key should not trigger getter")
return Date()
}
_ = Defaults.Key<Date?>("independentInitializeDynamicOptionalDateKey") {
XCTFail("Init dynamic optional key should not trigger getter")
return Date()
}
}
func testKeyRegistersDefault() {
let keyName = "registersDefault"
XCTAssertFalse(UserDefaults.standard.bool(forKey: keyName))
_ = Defaults.Key<Bool>(keyName, default: true)
XCTAssertTrue(UserDefaults.standard.bool(forKey: keyName))
// Test that it works with multiple keys with `Defaults`.
let keyName2 = "registersDefault2"
_ = Defaults.Key<String>(keyName2, default: keyName2)
XCTAssertEqual(UserDefaults.standard.string(forKey: keyName2), keyName2)
}
func testKeyWithUserDefaultSubscript() {
let key = Defaults.Key<Bool>("keyWithUserDeaultSubscript", default: false)
XCTAssertFalse(UserDefaults.standard[key])
UserDefaults.standard[key] = true
XCTAssertTrue(UserDefaults.standard[key])
}
func testKeys() {
XCTAssertFalse(Defaults[.key])
Defaults[.key] = true
XCTAssertTrue(Defaults[.key])
}
func testUrlType() {
XCTAssertEqual(Defaults[.url], fixtureURL)
let newUrl = URL(string: "https://twitter.com")!
Defaults[.url] = newUrl
XCTAssertEqual(Defaults[.url], newUrl)
}
func testDataType() {
XCTAssertEqual(Defaults[.data], Data([]))
let newData = Data([0xFF])
Defaults[.data] = newData
XCTAssertEqual(Defaults[.data], newData)
}
func testDateType() {
XCTAssertEqual(Defaults[.date], fixtureDate)
let newDate = Date()
Defaults[.date] = newDate
XCTAssertEqual(Defaults[.date], newDate)
}
func testDynamicDateType() {
XCTAssertEqual(Defaults[.defaultDynamicDate], Date(timeIntervalSince1970: 0))
let next = Date(timeIntervalSince1970: 1)
Defaults[.defaultDynamicDate] = next
XCTAssertEqual(Defaults[.defaultDynamicDate], next)
XCTAssertEqual(UserDefaults.standard.object(forKey: Defaults.Key<Date>.defaultDynamicDate.name) as! Date, next)
Defaults.Key<Date>.defaultDynamicDate.reset()
XCTAssertEqual(Defaults[.defaultDynamicDate], Date(timeIntervalSince1970: 0))
}
func testDynamicOptionalDateType() {
XCTAssertEqual(Defaults[.defaultDynamicOptionalDate], Date(timeIntervalSince1970: 1))
let next = Date(timeIntervalSince1970: 2)
Defaults[.defaultDynamicOptionalDate] = next
XCTAssertEqual(Defaults[.defaultDynamicOptionalDate], next)
XCTAssertEqual(UserDefaults.standard.object(forKey: Defaults.Key<Date>.defaultDynamicOptionalDate.name) as! Date, next)
Defaults[.defaultDynamicOptionalDate] = nil
XCTAssertEqual(Defaults[.defaultDynamicOptionalDate], Date(timeIntervalSince1970: 1))
XCTAssertNil(UserDefaults.standard.object(forKey: Defaults.Key<Date>.defaultDynamicOptionalDate.name))
}
func testFileURLType() {
XCTAssertEqual(Defaults[.file], fixtureFileURL)
}
func testUUIDType() {
let fixture = UUID()
Defaults[.uuid] = fixture
XCTAssertEqual(Defaults[.uuid], fixture)
}
func testRemoveAll() {
let key = Defaults.Key<Bool>("removeAll", default: false)
let key2 = Defaults.Key<Bool>("removeAll2", default: false)
Defaults[key] = true
Defaults[key2] = true
XCTAssertTrue(Defaults[key])
XCTAssertTrue(Defaults[key2])
Defaults.removeAll()
XCTAssertFalse(Defaults[key])
XCTAssertFalse(Defaults[key2])
}
func testCustomSuite() {
let customSuite = UserDefaults(suiteName: "com.sindresorhus.customSuite")!
let key = Defaults.Key<Bool>("customSuite", default: false, suite: customSuite)
XCTAssertFalse(customSuite[key])
XCTAssertFalse(Defaults[key])
Defaults[key] = true
XCTAssertTrue(customSuite[key])
XCTAssertTrue(Defaults[key])
Defaults.removeAll(suite: customSuite)
}
func testObserveKeyCombine() {
let key = Defaults.Key<Bool>("observeKey", default: false)
let expect = expectation(description: "Observation closure being called")
let publisher = Defaults
.publisher(key, options: [])
.map { ($0.oldValue, $0.newValue) }
.collect(2)
let cancellable = publisher.sink { tuples in
for (index, expected) in [(false, true), (true, false)].enumerated() {
XCTAssertEqual(expected.0, tuples[index].0)
XCTAssertEqual(expected.1, tuples[index].1)
}
expect.fulfill()
}
Defaults[key] = true
Defaults.reset(key)
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testObserveOptionalKeyCombine() {
let key = Defaults.Key<Bool?>("observeOptionalKey")
let expect = expectation(description: "Observation closure being called")
let publisher = Defaults
.publisher(key, options: [])
.map { ($0.oldValue, $0.newValue) }
.collect(3)
let expectedValues: [(Bool?, Bool?)] = [(nil, true), (true, false), (false, nil)]
let cancellable = publisher.sink { actualValues in
for (expected, actual) in zip(expectedValues, actualValues) {
XCTAssertEqual(expected.0, actual.0)
XCTAssertEqual(expected.1, actual.1)
}
expect.fulfill()
}
Defaults[key] = true
Defaults[key] = false
Defaults.reset(key)
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testDynamicOptionalDateTypeCombine() {
let first = Date(timeIntervalSince1970: 0)
let second = Date(timeIntervalSince1970: 1)
let third = Date(timeIntervalSince1970: 2)
let key = Defaults.Key<Date?>("combineDynamicOptionalDateKey") { first }
let expect = expectation(description: "Observation closure being called")
let publisher = Defaults
.publisher(key, options: [])
.map { ($0.oldValue, $0.newValue) }
.collect(3)
let expectedValues: [(Date?, Date?)] = [(first, second), (second, third), (third, first)]
let cancellable = publisher.sink { actualValues in
for (expected, actual) in zip(expectedValues, actualValues) {
XCTAssertEqual(expected.0, actual.0)
XCTAssertEqual(expected.1, actual.1)
}
expect.fulfill()
}
Defaults[key] = second
Defaults[key] = third
Defaults.reset(key)
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testObserveMultipleKeysCombine() {
let key1 = Defaults.Key<String>("observeKey1", default: "x")
let key2 = Defaults.Key<Bool>("observeKey2", default: true)
let expect = expectation(description: "Observation closure being called")
let publisher = Defaults.publisher(keys: key1, key2, options: []).collect(2)
let cancellable = publisher.sink { _ in
expect.fulfill()
}
Defaults[key1] = "y"
Defaults[key2] = false
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testObserveMultipleOptionalKeysCombine() {
let key1 = Defaults.Key<String?>("observeOptionalKey1")
let key2 = Defaults.Key<Bool?>("observeOptionalKey2")
let expect = expectation(description: "Observation closure being called")
let publisher = Defaults.publisher(keys: key1, key2, options: []).collect(2)
let cancellable = publisher.sink { _ in
expect.fulfill()
}
Defaults[key1] = "x"
Defaults[key2] = false
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testReceiveValueBeforeSubscriptionCombine() {
let key = Defaults.Key<String>("receiveValueBeforeSubscription", default: "hello")
let expect = expectation(description: "Observation closure being called")
let publisher = Defaults
.publisher(key)
.map(\.newValue)
.eraseToAnyPublisher()
.collect(2)
let cancellable = publisher.sink { values in
XCTAssertEqual(["hello", "world"], values)
expect.fulfill()
}
Defaults[key] = "world"
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testObserveKey() {
let key = Defaults.Key<Bool>("observeKey", default: false)
let expect = expectation(description: "Observation closure being called")
var observation: Defaults.Observation!
observation = Defaults.observe(key, options: []) { change in
XCTAssertFalse(change.oldValue)
XCTAssertTrue(change.newValue)
observation.invalidate()
expect.fulfill()
}
Defaults[key] = true
waitForExpectations(timeout: 10)
}
func testObserveOptionalKey() {
let key = Defaults.Key<Bool?>("observeOptionalKey")
let expect = expectation(description: "Observation closure being called")
var observation: Defaults.Observation!
observation = Defaults.observe(key, options: []) { change in
XCTAssertNil(change.oldValue)
XCTAssertTrue(change.newValue!)
observation.invalidate()
expect.fulfill()
}
Defaults[key] = true
waitForExpectations(timeout: 10)
}
func testObserveMultipleKeys() {
let key1 = Defaults.Key<String>("observeKey1", default: "x")
let key2 = Defaults.Key<Bool>("observeKey2", default: true)
let expect = expectation(description: "Observation closure being called")
var observation: Defaults.Observation!
var counter = 0
observation = Defaults.observe(keys: key1, key2, options: []) {
counter += 1
if counter == 2 {
expect.fulfill()
} else if counter > 2 {
XCTFail() // swiftlint:disable:this xctfail_message
}
}
Defaults[key1] = "y"
Defaults[key2] = false
observation.invalidate()
waitForExpectations(timeout: 10)
}
func testObserveKeyURL() {
let key = Defaults.Key<URL>("observeKeyURL", default: fixtureURL)
let expect = expectation(description: "Observation closure being called")
var observation: Defaults.Observation!
observation = Defaults.observe(key, options: []) { change in
XCTAssertEqual(change.oldValue, fixtureURL)
XCTAssertEqual(change.newValue, fixtureURL2)
observation.invalidate()
expect.fulfill()
}
Defaults[key] = fixtureURL2
waitForExpectations(timeout: 10)
}
func testObserveDynamicOptionalDateKey() {
let first = Date(timeIntervalSince1970: 0)
let second = Date(timeIntervalSince1970: 1)
let key = Defaults.Key<Date?>("observeDynamicOptionalDate") { first }
let expect = expectation(description: "Observation closure being called")
var observation: Defaults.Observation!
observation = Defaults.observe(key, options: []) { change in
XCTAssertEqual(change.oldValue, first)
XCTAssertEqual(change.newValue, second)
observation.invalidate()
expect.fulfill()
}
Defaults[key] = second
waitForExpectations(timeout: 10)
}
func testObservePreventPropagation() {
let key1 = Defaults.Key<Bool?>("preventPropagation0", default: nil)
let expect = expectation(description: "No infinite recursion")
var observation: Defaults.Observation!
var wasInside = false
observation = Defaults.observe(key1, options: []) { _ in
XCTAssertFalse(wasInside)
wasInside = true
Defaults.withoutPropagation {
Defaults[key1] = true
}
expect.fulfill()
}
Defaults[key1] = false
observation.invalidate()
waitForExpectations(timeout: 10)
}
func testObservePreventPropagationMultipleKeys() {
let key1 = Defaults.Key<Bool?>("preventPropagation1", default: nil)
let key2 = Defaults.Key<Bool?>("preventPropagation2", default: nil)
let expect = expectation(description: "No infinite recursion")
var observation: Defaults.Observation!
var wasInside = false
observation = Defaults.observe(keys: key1, key2, options: []) {
XCTAssertFalse(wasInside)
wasInside = true
Defaults.withoutPropagation {
Defaults[key1] = true
}
expect.fulfill()
}
Defaults[key1] = false
observation.invalidate()
waitForExpectations(timeout: 10)
}
// This checks if the callback is still being called if the value is changed on a second thread while the initial thread is doing some long running task.
func testObservePreventPropagationMultipleThreads() {
let key1 = Defaults.Key<Int?>("preventPropagation3", default: nil)
let expect = expectation(description: "No infinite recursion")
var observation: Defaults.Observation!
observation = Defaults.observe(key1, options: []) { _ in
Defaults.withoutPropagation {
Defaults[key1]! += 1
}
print("--- Main Thread: \(Thread.isMainThread)")
if !Thread.isMainThread {
XCTAssertEqual(Defaults[key1]!, 4)
expect.fulfill()
} else {
usleep(300_000)
print("--- Release: \(Thread.isMainThread)")
}
}
DispatchQueue.global().asyncAfter(deadline: .now() + 0.05) {
Defaults[key1]! += 1
}
Defaults[key1] = 1
observation.invalidate()
waitForExpectations(timeout: 10)
}
// Check if propagation prevention works across multiple observations.
func testObservePreventPropagationMultipleObservations() {
let key1 = Defaults.Key<Bool?>("preventPropagation4", default: nil)
let key2 = Defaults.Key<Bool?>("preventPropagation5", default: nil)
let expect = expectation(description: "No infinite recursion")
let observation1 = Defaults.observe(key2, options: []) { _ in
XCTFail() // swiftlint:disable:this xctfail_message
}
let observation2 = Defaults.observe(keys: key1, key2, options: []) {
Defaults.withoutPropagation {
Defaults[key2] = true
}
expect.fulfill()
}
Defaults[key1] = false
observation1.invalidate()
observation2.invalidate()
waitForExpectations(timeout: 10)
}
func testObservePreventPropagationCombine() {
let key1 = Defaults.Key<Bool?>("preventPropagation6", default: nil)
let expect = expectation(description: "No infinite recursion")
var wasInside = false
let cancellable = Defaults.publisher(key1, options: []).sink { _ in
XCTAssertFalse(wasInside)
wasInside = true
Defaults.withoutPropagation {
Defaults[key1] = true
}
expect.fulfill()
}
Defaults[key1] = false
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testObservePreventPropagationMultipleKeysCombine() {
let key1 = Defaults.Key<Bool?>("preventPropagation7", default: nil)
let key2 = Defaults.Key<Bool?>("preventPropagation8", default: nil)
let expect = expectation(description: "No infinite recursion")
var wasInside = false
let cancellable = Defaults.publisher(keys: key1, key2, options: []).sink { _ in
XCTAssertFalse(wasInside)
wasInside = true
Defaults.withoutPropagation {
Defaults[key1] = true
}
expect.fulfill()
}
Defaults[key2] = false
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testObservePreventPropagationModifiersCombine() {
let key1 = Defaults.Key<Bool?>("preventPropagation9", default: nil)
let expect = expectation(description: "No infinite recursion")
var wasInside = false
var cancellable: AnyCancellable!
cancellable = Defaults.publisher(key1, options: [])
.receive(on: DispatchQueue.main)
.delay(for: 0.5, scheduler: DispatchQueue.global())
.sink { _ in
XCTAssertFalse(wasInside)
wasInside = true
Defaults.withoutPropagation {
Defaults[key1] = true
}
expect.fulfill()
cancellable.cancel()
}
Defaults[key1] = false
waitForExpectations(timeout: 10)
}
func testRemoveDuplicatesObserveKeyCombine() {
let key = Defaults.Key<Bool>("observeKey", default: false)
let expect = expectation(description: "Observation closure being called")
let inputArray = [true, false, false, false, false, false, false, true]
let expectedArray = [true, false, true]
let cancellable = Defaults
.publisher(key, options: [])
.removeDuplicates()
.map(\.newValue)
.collect(expectedArray.count)
.sink { result in
print("Result array: \(result)")
if result == expectedArray {
expect.fulfill()
} else {
XCTFail("Expected Array is not matched")
}
}
for item in inputArray {
Defaults[key] = item
}
Defaults.reset(key)
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testRemoveDuplicatesOptionalObserveKeyCombine() {
let key = Defaults.Key<Bool?>("observeOptionalKey", default: nil)
let expect = expectation(description: "Observation closure being called")
let inputArray = [true, nil, nil, nil, false, false, false, nil]
let expectedArray = [true, nil, false, nil]
let cancellable = Defaults
.publisher(key, options: [])
.removeDuplicates()
.map(\.newValue)
.collect(expectedArray.count)
.sink { result in
print("Result array: \(result)")
if result == expectedArray {
expect.fulfill()
} else {
XCTFail("Expected Array is not matched")
}
}
for item in inputArray {
Defaults[key] = item
}
Defaults.reset(key)
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testResetKey() {
let defaultFixture1 = "foo1"
let defaultFixture2 = 0
let newFixture1 = "bar1"
let newFixture2 = 1
let key1 = Defaults.Key<String>("key1", default: defaultFixture1)
let key2 = Defaults.Key<Int>("key2", default: defaultFixture2)
Defaults[key1] = newFixture1
Defaults[key2] = newFixture2
Defaults.reset(key1)
XCTAssertEqual(Defaults[key1], defaultFixture1)
XCTAssertEqual(Defaults[key2], newFixture2)
}
func testResetMultipleKeys() {
let defaultFxiture1 = "foo1"
let defaultFixture2 = 0
let defaultFixture3 = "foo3"
let newFixture1 = "bar1"
let newFixture2 = 1
let newFixture3 = "bar3"
let key1 = Defaults.Key<String>("akey1", default: defaultFxiture1)
let key2 = Defaults.Key<Int>("akey2", default: defaultFixture2)
let key3 = Defaults.Key<String>("akey3", default: defaultFixture3)
Defaults[key1] = newFixture1
Defaults[key2] = newFixture2
Defaults[key3] = newFixture3
Defaults.reset(key1, key2)
XCTAssertEqual(Defaults[key1], defaultFxiture1)
XCTAssertEqual(Defaults[key2], defaultFixture2)
XCTAssertEqual(Defaults[key3], newFixture3)
}
func testResetMultipleOptionalKeys() {
let newFixture1 = "bar1"
let newFixture2 = 1
let newFixture3 = "bar3"
let key1 = Defaults.Key<String?>("aoptionalKey1")
let key2 = Defaults.Key<Int?>("aoptionalKey2")
let key3 = Defaults.Key<String?>("aoptionalKey3")
Defaults[key1] = newFixture1
Defaults[key2] = newFixture2
Defaults[key3] = newFixture3
Defaults.reset(key1, key2)
XCTAssertNil(Defaults[key1])
XCTAssertNil(Defaults[key2])
XCTAssertEqual(Defaults[key3], newFixture3)
}
func testObserveWithLifetimeTie() {
let key = Defaults.Key<Bool>("lifetimeTie", default: false)
let expect = expectation(description: "Observation closure being called")
weak var observation: Defaults.Observation!
observation = Defaults.observe(key, options: []) { _ in
observation.invalidate()
expect.fulfill()
}
.tieToLifetime(of: self)
Defaults[key] = true
waitForExpectations(timeout: 10)
}
func testObserveWithLifetimeTieManualBreak() {
let key = Defaults.Key<Bool>("lifetimeTieManualBreak", default: false)
weak var observation: Defaults.Observation? = Defaults.observe(key, options: []) { _ in }.tieToLifetime(of: self)
observation!.removeLifetimeTie()
for index in 1...10 {
if observation == nil {
break
}
sleep(1)
if index == 10 {
XCTFail() // swiftlint:disable:this xctfail_message
}
}
}
func testImmediatelyFinishingPublisherCombine() {
let key = Defaults.Key<Bool>("observeKey", default: false)
let expect = expectation(description: "Observation closure being called without crashing")
let cancellable = Defaults
.publisher(key, options: [.initial])
.first()
.sink { _ in
expect.fulfill()
}
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testImmediatelyFinishingMultiplePublisherCombine() {
let key1 = Defaults.Key<Bool>("observeKey1", default: false)
let key2 = Defaults.Key<String>("observeKey2", default: "🦄")
let expect = expectation(description: "Observation closure being called without crashing")
let cancellable = Defaults
.publisher(keys: [key1, key2], options: [.initial])
.first()
.sink { _ in
expect.fulfill()
}
cancellable.cancel()
waitForExpectations(timeout: 10)
}
func testKeyEquatable() {
XCTAssertEqual(Defaults.Key<Bool>("equatableKeyTest", default: false), Defaults.Key<Bool>("equatableKeyTest", default: false))
}
func testKeyHashable() {
_ = Set([Defaults.Key<Bool>("hashableKeyTest", default: false)])
}
func testUpdates() async {
let key = Defaults.Key<Bool>("updatesKey", default: false)
async let waiter = Defaults.updates(key, initial: false).first { $0 }
try? await Task.sleep(seconds: 0.1)
Defaults[key] = true
guard let result = await waiter else {
XCTFail() // swiftlint:disable:this xctfail_message
return
}
XCTAssertTrue(result)
}
func testUpdatesMultipleKeys() async {
let key1 = Defaults.Key<Bool>("updatesMultipleKey1", default: false)
let key2 = Defaults.Key<Bool>("updatesMultipleKey2", default: false)
let counter = Counter()
async let waiter: Void = {
for await _ in Defaults.updates([key1, key2], initial: false) {
await counter.increment()
if await counter.count == 2 {
break
}
}
}()
try? await Task.sleep(seconds: 0.1)
Defaults[key1] = true
Defaults[key2] = true
await waiter
let count = await counter.count
XCTAssertEqual(count, 2)
}
}
actor Counter {
private var _count = 0
var count: Int { _count }
func increment() {
_count += 1
}
}
// TODO: Remove when testing on macOS 13.
extension Task<Never, Never> {
static func sleep(seconds: TimeInterval) async throws {
try await sleep(nanoseconds: UInt64(seconds * Double(NSEC_PER_SEC)))
}
}
// swiftlint:enable discouraged_optional_boolean