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/*
This source file is part of the Swift.org open source project
Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
Licensed under Apache License v2.0 with Runtime Library Exception
See http://swift.org/LICENSE.txt for license information
See http://swift.org/CONTRIBUTORS.txt for Swift project authors
*/
import XCTest
import Foundation
import TSCBasic
class ConditionTests: XCTestCase {
func testSignal() {
let condition = Condition()
var waiting = false
var doneWaiting = false
let thread = Thread {
condition.whileLocked{
waiting = true
condition.wait()
doneWaiting = true
}
}
thread.start()
// Wait for the thread to start waiting
while condition.whileLocked({ !waiting }) {}
// Signal and wait for the thread to complete.
condition.whileLocked{
condition.signal()
}
thread.join()
// Wait for the thread to complete.
XCTAssert(doneWaiting)
}
func testBroadcast() {
let condition = Condition()
var waiting = [false, false]
var doneWaiting = [false, false]
let threads = [0, 1].map { i -> Thread in
let thread = Thread {
condition.whileLocked{
waiting[i] = true
condition.wait()
doneWaiting[i] = true
}
}
thread.start()
return thread
}
// Wait for each thread to start waiting.
while condition.whileLocked({ !waiting[0] || !waiting[1] }) {}
// Signal and wait for the thread to complete.
condition.whileLocked{
condition.broadcast()
}
threads.forEach{ $0.join() }
// Wait for each thread to complete.
XCTAssert(doneWaiting[0])
XCTAssert(doneWaiting[1])
}
func testWaitUntil() {
let condition = Condition()
var waiting = false
var doneWaiting = false
let thread = Thread {
condition.whileLocked{
waiting = true
let timeLimitReached = !condition.wait(until: Date() + 0.1)
if timeLimitReached {
doneWaiting = true
}
}
}
thread.start()
// Wait for the thread to start waiting
while condition.whileLocked({ !waiting }) {}
// We expect condition wait to timeout.
thread.join()
XCTAssert(doneWaiting)
}
}
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