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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 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
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#if FOUNDATION_FRAMEWORK
import Foundation
import XCTest
final class TestCalendarPerformance: XCTestCase {
var metrics: [XCTMetric] {
// XCTMemoryMetric is randomly reporting 0kb for memory usage.
[/*XCTMemoryMetric(),*/ XCTCPUMetric()]
}
var options: XCTMeasureOptions {
let opts = XCTMeasureOptions.default
opts.iterationCount = 10
return opts
}
func test_nextThousandThanksgivings() {
measure(metrics: metrics, options: self.options) {
let dc = DateComponents(month: 11, weekday: 5, weekOfMonth: 4)
let cal = Calendar(identifier: .gregorian)
let start = Date(timeIntervalSinceReferenceDate: 496359355.795410) //2016-09-23T14:35:55-0700
var count = 1000
cal.enumerateDates(startingAfter: start, matching: dc, matchingPolicy: .nextTime) { result, exactMatch, stop in
count -= 1
if count == 0 {
stop = true
}
}
}
}
func test_allocationsForFixedCalendars() {
let reference = Date(timeIntervalSinceReferenceDate: 496359355.795410) //2016-09-23T14:35:55-0700
measure(metrics: metrics, options: self.options) {
// Fixed calendar
for _ in 0..<10000 {
let cal = Calendar(identifier: .gregorian)
let date = cal.date(byAdding: .day, value: 1, to: reference)
XCTAssertTrue(date != nil)
}
}
}
func test_allocationsForCurrentCalendar() {
let reference = Date(timeIntervalSinceReferenceDate: 496359355.795410) //2016-09-23T14:35:55-0700
measure(metrics: metrics, options: self.options) {
for _ in 0..<10000 {
let cal = Calendar.current
let date = cal.date(byAdding: .day, value: 1, to: reference)
XCTAssertTrue(date != nil)
}
}
}
func test_allocationsForAutoupdatingCurrentCalendar() {
let reference = Date(timeIntervalSinceReferenceDate: 496359355.795410) //2016-09-23T14:35:55-0700
measure(metrics: metrics, options: self.options) {
for _ in 0..<10000 {
let cal = Calendar.autoupdatingCurrent
let date = cal.date(byAdding: .day, value: 1, to: reference)
XCTAssertTrue(date != nil)
}
}
}
func test_copyOnWritePerformance() {
let reference = Date(timeIntervalSinceReferenceDate: 496359355.795410) //2016-09-23T14:35:55-0700
measure(metrics: metrics, options: self.options) {
var cal = Calendar(identifier: .gregorian)
for i in 0..<10000 {
cal.firstWeekday = i % 2
let date = cal.date(byAdding: .day, value: 1, to: reference)
XCTAssertNotNil(date)
}
}
}
}
#endif
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