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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift Async Algorithms open source project
//
// Copyright (c) 2022 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
//
//===----------------------------------------------------------------------===//
import XCTest
import AsyncAlgorithms
final class TestManualClock: XCTestCase {
func test_sleep() async {
let clock = ManualClock()
let start = clock.now
let afterSleep = expectation(description: "after sleep")
let state = ManagedCriticalState(false)
Task {
try await clock.sleep(until: start.advanced(by: .steps(3)))
state.withCriticalRegion { $0 = true }
afterSleep.fulfill()
}
XCTAssertFalse(state.withCriticalRegion { $0 })
clock.advance()
XCTAssertFalse(state.withCriticalRegion { $0 })
clock.advance()
XCTAssertFalse(state.withCriticalRegion { $0 })
clock.advance()
await fulfillment(of: [afterSleep], timeout: 1.0)
XCTAssertTrue(state.withCriticalRegion { $0 })
}
func test_sleep_cancel() async {
let clock = ManualClock()
let start = clock.now
let afterSleep = expectation(description: "after sleep")
let state = ManagedCriticalState(false)
let failure = ManagedCriticalState<Error?>(nil)
let task = Task {
do {
try await clock.sleep(until: start.advanced(by: .steps(3)))
} catch {
failure.withCriticalRegion { $0 = error }
}
state.withCriticalRegion { $0 = true }
afterSleep.fulfill()
}
XCTAssertFalse(state.withCriticalRegion { $0 })
clock.advance()
task.cancel()
await fulfillment(of: [afterSleep], timeout: 1.0)
XCTAssertTrue(state.withCriticalRegion { $0 })
XCTAssertTrue(failure.withCriticalRegion { $0 is CancellationError })
}
func test_sleep_cancel_before_advance() async {
let clock = ManualClock()
let start = clock.now
let afterSleep = expectation(description: "after sleep")
let state = ManagedCriticalState(false)
let failure = ManagedCriticalState<Error?>(nil)
let task = Task {
do {
try await clock.sleep(until: start.advanced(by: .steps(3)))
} catch {
failure.withCriticalRegion { $0 = error }
}
state.withCriticalRegion { $0 = true }
afterSleep.fulfill()
}
XCTAssertFalse(state.withCriticalRegion { $0 })
task.cancel()
await fulfillment(of: [afterSleep], timeout: 1.0)
XCTAssertTrue(state.withCriticalRegion { $0 })
XCTAssertTrue(failure.withCriticalRegion { $0 is CancellationError })
}
}
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