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// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 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 the list of Swift project authors
//
#if NS_FOUNDATION_ALLOWS_TESTABLE_IMPORT
#if canImport(SwiftFoundation) && !DEPLOYMENT_RUNTIME_OBJC
@testable import SwiftFoundation
#else
@testable import Foundation
#endif
#endif
class TestThread : XCTestCase {
func test_currentThread() {
let thread1 = Thread.current
let thread2 = Thread.current
XCTAssertEqual(thread1, thread2)
XCTAssertEqual(thread1, Thread.mainThread)
}
func test_threadStart() {
let condition = NSCondition()
condition.lock()
let thread = Thread() {
condition.lock()
condition.broadcast()
condition.unlock()
}
XCTAssertEqual(thread.qualityOfService, .default)
thread.start()
let ok = condition.wait(until: Date(timeIntervalSinceNow: 2))
condition.unlock()
XCTAssertTrue(ok, "NSCondition wait timed out")
}
func test_threadName() {
func testInternalThreadName(_ name: String?) {
#if NS_FOUNDATION_ALLOWS_TESTABLE_IMPORT
XCTAssertEqual(Thread.current._name, name)
#endif
}
#if os(Linux) || os(Android) // Linux sets the initial thread name to the process name.
XCTAssertEqual(Thread.current.name, "swift-corelibs-")
testInternalThreadName("swift-corelibs-")
#elseif os(OpenBSD) // OpenBSD sets the initial thread name to this.
XCTAssertEqual(Thread.current.name, "Original thread")
testInternalThreadName("Original thread")
#else
// No name is set initially
XCTAssertEqual(Thread.current.name, "")
testInternalThreadName("")
#endif
Thread.current.name = "mainThread"
XCTAssertEqual(Thread.mainThread.name, "mainThread")
testInternalThreadName("mainThread")
Thread.current.name = "12345678901234567890"
#if os(Linux) || os(Android)
// pthread_setname_np() only allows 15 characters on Linux, so setting it fails
// and the previous name will still be there.
XCTAssertEqual(Thread.current.name, "mainThread")
#else
XCTAssertEqual(Thread.current.name, "12345678901234567890")
#endif
testInternalThreadName(Thread.current.name)
}
func test_mainThread() {
XCTAssertTrue(Thread.isMainThread)
let t = Thread.mainThread
XCTAssertTrue(t.isMainThread)
let c = Thread.current
XCTAssertTrue(c.isMainThread)
XCTAssertTrue(c.isExecuting)
XCTAssertTrue(c.isEqual(t))
let condition = NSCondition()
condition.lock()
let thread = Thread() {
condition.lock()
XCTAssertFalse(Thread.isMainThread)
XCTAssertFalse(Thread.mainThread == Thread.current)
condition.broadcast()
condition.unlock()
}
thread.start()
let ok = condition.wait(until: Date(timeIntervalSinceNow: 10))
condition.unlock()
XCTAssertTrue(ok, "NSCondition wait timed out")
}
func test_callStackSymbols() throws {
#if os(Android) || os(OpenBSD)
throw XCTSkip("Android/OpenBSD doesn't support backtraces at the moment.")
#else
let symbols = Thread.callStackSymbols
XCTAssertTrue(symbols.count > 0)
XCTAssertTrue(symbols.count <= 128)
#endif
}
func test_callStackReturnAddresses() throws {
#if os(Android) || os(OpenBSD)
throw XCTSkip("Android/OpenBSD doesn't support backtraces at the moment.")
#else
let addresses = Thread.callStackReturnAddresses
XCTAssertTrue(addresses.count > 0)
XCTAssertTrue(addresses.count <= 128)
#endif
}
func test_sleepForTimeInterval() throws {
throw XCTSkip("https://bugs.swift.org/browse/SR-15817")
#if false
let measureOversleep = { (timeInterval: TimeInterval) -> TimeInterval in
let start = Date()
Thread.sleep(forTimeInterval: timeInterval)
// Measures time Thread.sleep spends over specified timeInterval value
return -(start.timeIntervalSinceNow + timeInterval)
}
// Allow a little early wake-ups. Sleep timer on Windows
// is more precise than timer used in Date implementation.
let allowedOversleepRange = -0.00001..<0.1
let oversleep1 = measureOversleep(TimeInterval(0.9))
XCTAssertTrue(allowedOversleepRange.contains(oversleep1), "Oversleep \(oversleep1) is not in expected range \(allowedOversleepRange)")
let oversleep2 = measureOversleep(TimeInterval(1.2))
XCTAssertTrue(allowedOversleepRange.contains(oversleep2), "Oversleep \(oversleep2) is not in expected range \(allowedOversleepRange)")
let oversleep3 = measureOversleep(TimeInterval(1.0))
XCTAssertTrue(allowedOversleepRange.contains(oversleep3), "Oversleep \(oversleep3) is not in expected range \(allowedOversleepRange)")
#endif
}
func test_sleepUntilDate() throws {
throw XCTSkip("https://bugs.swift.org/browse/SR-15489")
#if false
let measureOversleep = { (date: Date) -> TimeInterval in
Thread.sleep(until: date)
return -date.timeIntervalSinceNow
}
let allowedOversleepRange = -0.00001..<0.1
let oversleep1 = measureOversleep(Date(timeIntervalSinceNow: 0.8))
XCTAssertTrue(allowedOversleepRange.contains(oversleep1), "Oversleep \(oversleep1) is not in expected range \(allowedOversleepRange)")
let oversleep2 = measureOversleep(Date(timeIntervalSinceNow: 1.1))
XCTAssertTrue(allowedOversleepRange.contains(oversleep2), "Oversleep \(oversleep2) is not in expected range \(allowedOversleepRange)")
let oversleep3 = measureOversleep(Date(timeIntervalSinceNow: 1.0))
XCTAssertTrue(allowedOversleepRange.contains(oversleep3), "Oversleep \(oversleep3) is not in expected range \(allowedOversleepRange)")
#endif
}
}
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