Date+Components.swift

Date+Components.swift

//
//  Date+Components.swift
//  Created by: Jader Feijo
//

import Foundation

extension Date {
	var hour: Int {
		return (Calendar.current as NSCalendar).component(.hour, from: self)
	}

	var minute: Int {
		return (Calendar.current as NSCalendar).component(.minute, from: self)
	}

	var second: Int {
		return (Calendar.current as NSCalendar).component(.second, from: self)
	}

	var year: Int {
		return (Calendar.current as NSCalendar).component(.year, from: self)
	}

	var month: Int {
		return (Calendar.current as NSCalendar).component(.month, from: self)
	}

	var day: Int {
		return (Calendar.current as NSCalendar).component(.day, from: self)
	}

	var weekday: Int {
		return (Calendar.current as NSCalendar).component(.weekday, from: self)
	}
}

DateComponentsTests.swift

//
//  DateComponentsTests.swift
//  Created by: Jader Feijo
//

import XCTest

class NSDateComponentsTests: XCTestCase {

	// 2016-10-14 16:00:36 UTC
	let date = Date(timeIntervalSinceReferenceDate: 498153636.50913697)
	let oldTimeZone = TimeZone.current

	override func setUp() {
		NSTimeZone.default = TimeZone(abbreviation: "UTC")!
	}

	override func tearDown() {
		NSTimeZone.default = oldTimeZone
	}

	func testHour() {
		XCTAssert(date.hour == 16)
	}

	func testMinute() {
		XCTAssert(date.minute == 0)
	}

	func testSecond() {
		XCTAssert(date.second == 36)
	}

	func testYear() {
		XCTAssert(date.year == 2016)
	}

	func testMonth() {
		XCTAssert(date.month == 10)
	}

	func testDay() {
		XCTAssert(date.day == 14)
	}

	func testWeekday() {
		XCTAssert(date.weekday == 6)
	}
}