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TestDateFormatter.swift
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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
//
class TestDateFormatter: XCTestCase {
let DEFAULT_LOCALE = "en_US_POSIX"
let DEFAULT_TIMEZONE = "GMT"
func test_BasicConstruction() {
let symbolDictionaryOne = ["eraSymbols" : ["BC", "AD"],
"monthSymbols" : ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
"shortMonthSymbols" : ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
"weekdaySymbols" : ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
"shortWeekdaySymbols" : ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
"longEraSymbols" : ["Before Christ", "Anno Domini"],
"veryShortMonthSymbols" : ["J", "F", "M", "A", "M", "J", "J", "A", "S", "O", "N", "D"],
"standaloneMonthSymbols" : ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
"shortStandaloneMonthSymbols" : ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
"veryShortStandaloneMonthSymbols" : ["J", "F", "M", "A", "M", "J", "J", "A", "S", "O", "N", "D"]]
let symbolDictionaryTwo = ["veryShortWeekdaySymbols" : ["S", "M", "T", "W", "T", "F", "S"],
"standaloneWeekdaySymbols" : ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
"shortStandaloneWeekdaySymbols" : ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
"veryShortStandaloneWeekdaySymbols" : ["S", "M", "T", "W", "T", "F", "S"],
"quarterSymbols" : ["1st quarter", "2nd quarter", "3rd quarter", "4th quarter"],
"shortQuarterSymbols" : ["Q1", "Q2", "Q3", "Q4"],
"standaloneQuarterSymbols" : ["1st quarter", "2nd quarter", "3rd quarter", "4th quarter"],
"shortStandaloneQuarterSymbols" : ["Q1", "Q2", "Q3", "Q4"]]
let f = DateFormatter()
XCTAssertNotNil(f.timeZone)
XCTAssertNotNil(f.locale)
f.timeZone = TimeZone(identifier: DEFAULT_TIMEZONE)
f.locale = Locale(identifier: DEFAULT_LOCALE)
// Assert default values are set properly
XCTAssertFalse(f.generatesCalendarDates)
XCTAssertNotNil(f.calendar)
XCTAssertFalse(f.isLenient)
XCTAssertEqual(f.twoDigitStartDate!, Date(timeIntervalSince1970: -631152000))
XCTAssertNil(f.defaultDate)
XCTAssertEqual(f.eraSymbols, symbolDictionaryOne["eraSymbols"]!)
XCTAssertEqual(f.monthSymbols, symbolDictionaryOne["monthSymbols"]!)
XCTAssertEqual(f.shortMonthSymbols, symbolDictionaryOne["shortMonthSymbols"]!)
XCTAssertEqual(f.weekdaySymbols, symbolDictionaryOne["weekdaySymbols"]!)
XCTAssertEqual(f.shortWeekdaySymbols, symbolDictionaryOne["shortWeekdaySymbols"]!)
XCTAssertEqual(f.amSymbol, "AM")
XCTAssertEqual(f.pmSymbol, "PM")
XCTAssertEqual(f.longEraSymbols, symbolDictionaryOne["longEraSymbols"]!)
XCTAssertEqual(f.veryShortMonthSymbols, symbolDictionaryOne["veryShortMonthSymbols"]!)
XCTAssertEqual(f.standaloneMonthSymbols, symbolDictionaryOne["standaloneMonthSymbols"]!)
XCTAssertEqual(f.shortStandaloneMonthSymbols, symbolDictionaryOne["shortStandaloneMonthSymbols"]!)
XCTAssertEqual(f.veryShortStandaloneMonthSymbols, symbolDictionaryOne["veryShortStandaloneMonthSymbols"]!)
XCTAssertEqual(f.veryShortWeekdaySymbols, symbolDictionaryTwo["veryShortWeekdaySymbols"]!)
XCTAssertEqual(f.standaloneWeekdaySymbols, symbolDictionaryTwo["standaloneWeekdaySymbols"]!)
XCTAssertEqual(f.shortStandaloneWeekdaySymbols, symbolDictionaryTwo["shortStandaloneWeekdaySymbols"]!)
XCTAssertEqual(f.veryShortStandaloneWeekdaySymbols, symbolDictionaryTwo["veryShortStandaloneWeekdaySymbols"]!)
XCTAssertEqual(f.quarterSymbols, symbolDictionaryTwo["quarterSymbols"]!)
XCTAssertEqual(f.shortQuarterSymbols, symbolDictionaryTwo["shortQuarterSymbols"]!)
XCTAssertEqual(f.standaloneQuarterSymbols, symbolDictionaryTwo["standaloneQuarterSymbols"]!)
XCTAssertEqual(f.shortStandaloneQuarterSymbols, symbolDictionaryTwo["shortStandaloneQuarterSymbols"]!)
XCTAssertEqual(f.gregorianStartDate, Date(timeIntervalSince1970: -12219292800))
XCTAssertFalse(f.doesRelativeDateFormatting)
}
// ShortStyle
// locale stringFromDate example
// ------ -------------- --------
// en_US M/d/yy h:mm a 12/25/15 12:00 AM
func test_dateStyleShort() {
let timestamps = [
-31536000 : "1/1/69, 12:00 AM" , 0.0 : "1/1/70, 12:00 AM", 31536000 : "1/1/71, 12:00 AM",
2145916800 : "1/1/38, 12:00 AM", 1456272000 : "2/24/16, 12:00 AM", 1456358399 : "2/24/16, 11:59 PM",
1452574638 : "1/12/16, 4:57 AM", 1455685038 : "2/17/16, 4:57 AM", 1458622638 : "3/22/16, 4:57 AM",
1459745838 : "4/4/16, 4:57 AM", 1462597038 : "5/7/16, 4:57 AM", 1465534638 : "6/10/16, 4:57 AM",
1469854638 : "7/30/16, 4:57 AM", 1470718638 : "8/9/16, 4:57 AM", 1473915438 : "9/15/16, 4:57 AM",
1477285038 : "10/24/16, 4:57 AM", 1478062638 : "11/2/16, 4:57 AM", 1482641838 : "12/25/16, 4:57 AM"
]
let f = DateFormatter()
f.dateStyle = .short
f.timeStyle = .short
// ensure tests give consistent results by setting specific timeZone and locale
f.timeZone = TimeZone(identifier: DEFAULT_TIMEZONE)
f.locale = Locale(identifier: DEFAULT_LOCALE)
for (timestamp, stringResult) in timestamps {
let testDate = Date(timeIntervalSince1970: timestamp)
let sf = f.string(from: testDate)
XCTAssertEqual(sf, stringResult)
}
}
// MediumStyle
// locale stringFromDate example
// ------ -------------- ------------
// en_US MMM d, y, h:mm:ss a Dec 25, 2015, 12:00:00 AM
func test_dateStyleMedium() throws {
throw XCTSkip()
#if false
let timestamps = [
-31536000 : "Jan 1, 1969 at 12:00:00 AM" , 0.0 : "Jan 1, 1970 at 12:00:00 AM", 31536000 : "Jan 1, 1971 at 12:00:00 AM",
2145916800 : "Jan 1, 2038 at 12:00:00 AM", 1456272000 : "Feb 24, 2016 at 12:00:00 AM", 1456358399 : "Feb 24, 2016 at 11:59:59 PM",
1452574638 : "Jan 12, 2016 at 4:57:18 AM", 1455685038 : "Feb 17, 2016 at 4:57:18 AM", 1458622638 : "Mar 22, 2016 at 4:57:18 AM",
1459745838 : "Apr 4, 2016 at 4:57:18 AM", 1462597038 : "May 7, 2016 at 4:57:18 AM", 1465534638 : "Jun 10, 2016 at 4:57:18 AM",
1469854638 : "Jul 30, 2016 at 4:57:18 AM", 1470718638 : "Aug 9, 2016 at 4:57:18 AM", 1473915438 : "Sep 15, 2016 at 4:57:18 AM",
1477285038 : "Oct 24, 2016 at 4:57:18 AM", 1478062638 : "Nov 2, 2016 at 4:57:18 AM", 1482641838 : "Dec 25, 2016 at 4:57:18 AM"
]
let f = DateFormatter()
f.dateStyle = .medium
f.timeStyle = .medium
f.timeZone = TimeZone(identifier: DEFAULT_TIMEZONE)
f.locale = Locale(identifier: DEFAULT_LOCALE)
for (timestamp, stringResult) in timestamps {
let testDate = Date(timeIntervalSince1970: timestamp)
let sf = f.string(from: testDate)
XCTAssertEqual(sf, stringResult)
}
#endif
}
// LongStyle
// locale stringFromDate example
// ------ -------------- -----------------
// en_US MMMM d, y 'at' h:mm:ss a zzz December 25, 2015 at 12:00:00 AM GMT
func test_dateStyleLong() {
let timestamps = [
-31536000 : "January 1, 1969 at 12:00:00 AM GMT" , 0.0 : "January 1, 1970 at 12:00:00 AM GMT", 31536000 : "January 1, 1971 at 12:00:00 AM GMT",
2145916800 : "January 1, 2038 at 12:00:00 AM GMT", 1456272000 : "February 24, 2016 at 12:00:00 AM GMT", 1456358399 : "February 24, 2016 at 11:59:59 PM GMT",
1452574638 : "January 12, 2016 at 4:57:18 AM GMT", 1455685038 : "February 17, 2016 at 4:57:18 AM GMT", 1458622638 : "March 22, 2016 at 4:57:18 AM GMT",
1459745838 : "April 4, 2016 at 4:57:18 AM GMT", 1462597038 : "May 7, 2016 at 4:57:18 AM GMT", 1465534638 : "June 10, 2016 at 4:57:18 AM GMT",
1469854638 : "July 30, 2016 at 4:57:18 AM GMT", 1470718638 : "August 9, 2016 at 4:57:18 AM GMT", 1473915438 : "September 15, 2016 at 4:57:18 AM GMT",
1477285038 : "October 24, 2016 at 4:57:18 AM GMT", 1478062638 : "November 2, 2016 at 4:57:18 AM GMT", 1482641838 : "December 25, 2016 at 4:57:18 AM GMT"
]
let f = DateFormatter()
f.dateStyle = .long
f.timeStyle = .long
f.timeZone = TimeZone(identifier: DEFAULT_TIMEZONE)
f.locale = Locale(identifier: DEFAULT_LOCALE)
for (timestamp, stringResult) in timestamps {
let testDate = Date(timeIntervalSince1970: timestamp)
let sf = f.string(from: testDate)
XCTAssertEqual(sf, stringResult)
}
}
// FullStyle
// locale stringFromDate example
// ------ -------------- -------------------------
// en_US EEEE, MMMM d, y 'at' h:mm:ss a zzzz Friday, December 25, 2015 at 12:00:00 AM Greenwich Mean Time
func test_dateStyleFull() {
#if os(macOS) // timestyle .full is currently broken on Linux, the timezone should be 'Greenwich Mean Time' not 'GMT'
let timestamps: [TimeInterval:String] = [
// Negative time offsets are still buggy on macOS
-31536000 : "Wednesday, January 1, 1969 at 12:00:00 AM GMT", 0.0 : "Thursday, January 1, 1970 at 12:00:00 AM Greenwich Mean Time",
31536000 : "Friday, January 1, 1971 at 12:00:00 AM Greenwich Mean Time", 2145916800 : "Friday, January 1, 2038 at 12:00:00 AM Greenwich Mean Time",
1456272000 : "Wednesday, February 24, 2016 at 12:00:00 AM Greenwich Mean Time", 1456358399 : "Wednesday, February 24, 2016 at 11:59:59 PM Greenwich Mean Time",
1452574638 : "Tuesday, January 12, 2016 at 4:57:18 AM Greenwich Mean Time", 1455685038 : "Wednesday, February 17, 2016 at 4:57:18 AM Greenwich Mean Time",
1458622638 : "Tuesday, March 22, 2016 at 4:57:18 AM Greenwich Mean Time", 1459745838 : "Monday, April 4, 2016 at 4:57:18 AM Greenwich Mean Time",
1462597038 : "Saturday, May 7, 2016 at 4:57:18 AM Greenwich Mean Time", 1465534638 : "Friday, June 10, 2016 at 4:57:18 AM Greenwich Mean Time",
1469854638 : "Saturday, July 30, 2016 at 4:57:18 AM Greenwich Mean Time", 1470718638 : "Tuesday, August 9, 2016 at 4:57:18 AM Greenwich Mean Time",
1473915438 : "Thursday, September 15, 2016 at 4:57:18 AM Greenwich Mean Time", 1477285038 : "Monday, October 24, 2016 at 4:57:18 AM Greenwich Mean Time",
1478062638 : "Wednesday, November 2, 2016 at 4:57:18 AM Greenwich Mean Time", 1482641838 : "Sunday, December 25, 2016 at 4:57:18 AM Greenwich Mean Time"
]
let f = DateFormatter()
f.dateStyle = .full
f.timeStyle = .full
f.timeZone = TimeZone(identifier: DEFAULT_TIMEZONE)
f.locale = Locale(identifier: DEFAULT_LOCALE)
for (timestamp, stringResult) in timestamps {
let testDate = Date(timeIntervalSince1970: timestamp)
let sf = f.string(from: testDate)
XCTAssertEqual(sf, stringResult)
}
#endif
}
// Custom Style
// locale stringFromDate example
// ------ -------------- -------------------------
// en_US EEEE, MMMM d, y 'at' hh:mm:ss a zzzz Friday, December 25, 2015 at 12:00:00 AM Greenwich Mean Time
func test_customDateFormat() {
let timestamps = [
// Negative time offsets are still buggy on macOS
-31536000 : "Wednesday, January 1, 1969 at 12:00:00 AM GMT", 0.0 : "Thursday, January 1, 1970 at 12:00:00 AM Greenwich Mean Time",
31536000 : "Friday, January 1, 1971 at 12:00:00 AM Greenwich Mean Time", 2145916800 : "Friday, January 1, 2038 at 12:00:00 AM Greenwich Mean Time",
1456272000 : "Wednesday, February 24, 2016 at 12:00:00 AM Greenwich Mean Time", 1456358399 : "Wednesday, February 24, 2016 at 11:59:59 PM Greenwich Mean Time",
1452574638 : "Tuesday, January 12, 2016 at 04:57:18 AM Greenwich Mean Time", 1455685038 : "Wednesday, February 17, 2016 at 04:57:18 AM Greenwich Mean Time",
1458622638 : "Tuesday, March 22, 2016 at 04:57:18 AM Greenwich Mean Time", 1459745838 : "Monday, April 4, 2016 at 04:57:18 AM Greenwich Mean Time",
1462597038 : "Saturday, May 7, 2016 at 04:57:18 AM Greenwich Mean Time", 1465534638 : "Friday, June 10, 2016 at 04:57:18 AM Greenwich Mean Time",
1469854638 : "Saturday, July 30, 2016 at 04:57:18 AM Greenwich Mean Time", 1470718638 : "Tuesday, August 9, 2016 at 04:57:18 AM Greenwich Mean Time",
1473915438 : "Thursday, September 15, 2016 at 04:57:18 AM Greenwich Mean Time", 1477285038 : "Monday, October 24, 2016 at 04:57:18 AM Greenwich Mean Time",
1478062638 : "Wednesday, November 2, 2016 at 04:57:18 AM Greenwich Mean Time", 1482641838 : "Sunday, December 25, 2016 at 04:57:18 AM Greenwich Mean Time"
]
let f = DateFormatter()
f.timeZone = TimeZone(identifier: DEFAULT_TIMEZONE)
f.locale = Locale(identifier: DEFAULT_LOCALE)
f.dateFormat = "EEEE, MMMM d, y 'at' hh:mm:ss a zzzz"
for (timestamp, stringResult) in timestamps {
let testDate = Date(timeIntervalSince1970: timestamp)
let sf = f.string(from: testDate)
XCTAssertEqual(sf, stringResult)
}
let quarterTimestamps: [Double : String] = [
1451679712 : "1", 1459542112 : "2", 1467404512 : "3", 1475353312 : "4"
]
f.dateFormat = "Q"
for (timestamp, stringResult) in quarterTimestamps {
let testDate = Date(timeIntervalSince1970: timestamp)
let sf = f.string(from: testDate)
XCTAssertEqual(sf, stringResult)
}
// Check .dateFormat resets when style changes
let testDate = Date(timeIntervalSince1970: 1457738454)
// Fails on High Sierra
//f.dateStyle = .medium
//f.timeStyle = .medium
//XCTAssertEqual(f.string(from: testDate), "Mar 11, 2016, 11:20:54 PM")
//XCTAssertEqual(f.dateFormat, "MMM d, y, h:mm:ss a")
f.dateFormat = "dd-MM-yyyy"
XCTAssertEqual(f.string(from: testDate), "11-03-2016")
}
func test_setLocalizedDateFormatFromTemplate() {
let locale = Locale(identifier: DEFAULT_LOCALE)
let template = "EEEE MMMM d y hhmmss a zzzz"
let f = DateFormatter()
f.locale = locale
f.setLocalizedDateFormatFromTemplate(template)
let dateFormat = DateFormatter.dateFormat(fromTemplate: template, options: 0, locale: locale)
XCTAssertEqual(f.dateFormat, dateFormat)
}
func test_dateFormatString() {
let f = DateFormatter()
f.locale = Locale(identifier: DEFAULT_LOCALE)
f.timeZone = TimeZone(abbreviation: DEFAULT_TIMEZONE)
let formats: [String: (DateFormatter.Style, DateFormatter.Style)] = [
"": (.none, .none),
"h:mm a": (.none, .short),
"h:mm:ss a": (.none, .medium),
"h:mm:ss a z": (.none, .long),
"h:mm:ss a zzzz": (.none, .full),
"M/d/yy": (.short, .none),
"M/d/yy, h:mm a": (.short, .short),
"M/d/yy, h:mm:ss a": (.short, .medium),
"M/d/yy, h:mm:ss a z": (.short, .long),
"M/d/yy, h:mm:ss a zzzz": (.short, .full),
"MMM d, y": (.medium, .none),
"MMM d, y 'at' h:mm a": (.medium, .short),
"MMM d, y 'at' h:mm:ss a": (.medium, .medium),
"MMM d, y 'at' h:mm:ss a z": (.medium, .long),
"MMM d, y 'at' h:mm:ss a zzzz": (.medium, .full),
"MMMM d, y": (.long, .none),
"MMMM d, y 'at' h:mm a": (.long, .short),
"MMMM d, y 'at' h:mm:ss a": (.long, .medium),
"MMMM d, y 'at' h:mm:ss a z": (.long, .long),
"MMMM d, y 'at' h:mm:ss a zzzz": (.long, .full),
"EEEE, MMMM d, y": (.full, .none),
"EEEE, MMMM d, y 'at' h:mm a": (.full, .short),
"EEEE, MMMM d, y 'at' h:mm:ss a": (.full, .medium),
"EEEE, MMMM d, y 'at' h:mm:ss a z": (.full, .long),
"EEEE, MMMM d, y 'at' h:mm:ss a zzzz": (.full, .full),
]
for (dateFormat, styles) in formats {
f.dateStyle = styles.0
f.timeStyle = styles.1
XCTAssertEqual(f.dateFormat!, dateFormat)
}
}
func test_setLocaleToNil() {
let f = DateFormatter()
// Locale should be the current one by default
XCTAssertEqual(f.locale, .current)
f.locale = nil
// Locale should go back to current.
XCTAssertEqual(f.locale, .current)
// A nil locale should not crash a subsequent operation
let result: String? = f.string(from: Date())
XCTAssertNotNil(result)
}
// Test disabled due to Amazon Linux failures (rdar://132784697)
#if false
func test_setTimeZoneToNil() {
let f = DateFormatter()
// Time zone should be the system one by default.
XCTAssertEqual(f.timeZone, NSTimeZone.system)
f.timeZone = nil
// Time zone should go back to the system one.
XCTAssertEqual(f.timeZone, NSTimeZone.system)
}
#endif
func test_setTimeZone() {
// Test two different time zones. Should ensure that if one
// happens to be TimeZone.current, we still get a valid test.
let newYork = TimeZone(identifier: "America/New_York")!
let losAngeles = TimeZone(identifier: "America/Los_Angeles")!
XCTAssertNotEqual(newYork, losAngeles)
// Case 1: New York
let f = DateFormatter()
f.timeZone = newYork
XCTAssertEqual(f.timeZone, newYork)
// Case 2: Los Angeles
f.timeZone = losAngeles
XCTAssertEqual(f.timeZone, losAngeles)
}
func test_expectedTimeZone() {
let newYork = TimeZone(identifier: "America/New_York")!
let losAngeles = TimeZone(identifier: "America/Los_Angeles")!
XCTAssertNotEqual(newYork, losAngeles)
let now = Date()
let f = DateFormatter()
f.dateFormat = "z"
f.locale = Locale(identifier: "en_US_POSIX")
// Case 1: TimeZone.current
// This case can catch some issues that cause TimeZone.current to be
// treated like GMT, but it doesn't work if TimeZone.current is GMT.
// If you do find an issue like this caused by this first case,
// it would benefit from a more specific test that fails when
// TimeZone.current is GMT as well.
// (ex. TestTimeZone.test_systemTimeZoneName)
func abbreviation(for tz: TimeZone) -> String? {
let isDST = tz.daylightSavingTimeOffset(for: now) != 0.0
return tz.localizedName(for: isDST ? .shortDaylightSaving : .shortStandard , locale: f.locale)
}
f.timeZone = TimeZone.current
XCTAssertEqual(f.string(from: now), abbreviation(for: TimeZone.current))
// Case 2: New York
f.timeZone = newYork
XCTAssertEqual(f.string(from: now), abbreviation(for: newYork))
// Case 3: Los Angeles
f.timeZone = losAngeles
XCTAssertEqual(f.string(from: now), abbreviation(for: losAngeles))
}
func test_dateFrom() throws {
let formatter = DateFormatter()
formatter.timeZone = TimeZone(identifier: "UTC")
formatter.dateFormat = "yyyy-MM-dd"
XCTAssertNil(formatter.date(from: "2018-03-09T10:25:16+01:00"))
let d1 = try XCTUnwrap(formatter.date(from: "2018-03-09"))
XCTAssertEqual(d1.description, "2018-03-09 00:00:00 +0000")
// DateFormatter should allow any kind of whitespace before and after parsed content
let whitespaces = " \t\u{00a0}\u{1680}\u{2000}\u{2001}\u{2002}\u{2003}\u{2004}\u{2005}\u{2006}\u{2007}\u{2008}\u{2009}\u{200a}\u{202f}\u{205f}\u{3000}"
let d1Prefix = try XCTUnwrap(formatter.date(from: "\(whitespaces)2018-03-09"))
XCTAssertEqual(d1.description, d1Prefix.description)
let d1PrefixSuffix = try XCTUnwrap(formatter.date(from: "\(whitespaces)2018-03-09\(whitespaces)"))
XCTAssertEqual(d1.description, d1PrefixSuffix.description)
let d1Suffix = try XCTUnwrap(formatter.date(from: "2018-03-09\(whitespaces)"))
XCTAssertEqual(d1.description, d1Suffix.description)
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZZ"
XCTAssertNil(formatter.date(from: "2018-03-09"))
let d2 = try XCTUnwrap(formatter.date(from: "2018-03-09T10:25:16+01:00"))
XCTAssertEqual(d2.description, "2018-03-09 09:25:16 +0000")
}
func test_dateParseAndFormatWithJapaneseCalendar() throws {
let formatter = DateFormatter()
formatter.locale = Locale(identifier: "ja_JP")
formatter.calendar = Calendar(identifier: .japanese)
formatter.dateFormat = "Gy年M月d日 HH:mm"
formatter.timeZone = TimeZone(abbreviation: "JST")
do {
// Parse test
let parsed = formatter.date(from: "平成31年4月30日 23:10")
XCTAssertEqual(parsed?.timeIntervalSince1970, 1556633400) // April 30, 2019, 11:10 PM (JST)
// Format test
let dateString = formatter.string(from: Date(timeIntervalSince1970: 1556633400)) // April 30, 2019, 11:10 PM (JST)
XCTAssertEqual(dateString, "平成31年4月30日 23:10")
}
// Test for new Japanese era (starting from May 1, 2019)
do {
// Parse test
let parsed = formatter.date(from: "令和1年5月1日 23:10")
XCTAssertEqual(parsed?.timeIntervalSince1970, 1556719800) // May 1st, 2019, 11:10 PM (JST)
// Test for 元年(Gannen) representation of 1st year
let parsedAlt = formatter.date(from: "令和元年5月1日 23:10")
XCTAssertEqual(parsedAlt?.timeIntervalSince1970, 1556719800) // May 1st, 2019, 11:10 PM (JST)
// Format test
let dateString = formatter.string(from: Date(timeIntervalSince1970: 1556719800)) // May 1st, 2019, 11:10 PM (JST)
XCTAssertEqual(dateString, "令和元年5月1日 23:10")
}
}
func test_orderOfPropertySetters() throws {
// This produces a .count factorial number of arrays
func combinations<T>(of a: [T]) -> [[T]] {
precondition(!a.isEmpty)
if a.count == 1 { return [a] }
if a.count == 2 { return [ [a[0], a[1]], [ a[1], a[0]] ] }
var result: [[T]] = []
for idx in a.startIndex..<a.endIndex {
let x = a[idx]
var b: [T] = a
b.remove(at: idx)
for var c in combinations(of: b) {
c.append(x)
result.append(c)
}
}
return result
}
let formatter = DateFormatter()
formatter.timeZone = TimeZone(identifier: "CET")
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
let date = try XCTUnwrap(formatter.date(from: "2019-05-05T12:52:10"))
let applySettings: [(String, (DateFormatter) -> Void)] =
[(".timeZone", {
$0.timeZone = TimeZone(identifier: "Europe/Oslo")
}),
(".calendar", {
$0.calendar = Calendar(identifier: .gregorian)
}),
(".locale", {
$0.locale = Locale(identifier: "nb")
}),
(".dateStyle", {
$0.dateStyle = .medium
}),
(".timeStyle", {
$0.timeStyle = .medium
})
]
// Test all of the combinations of setting the properties produces the same output
let expected = "5. mai 2019, 12:52:10"
for settings in combinations(of: applySettings) {
let f = DateFormatter()
settings.forEach { $0.1(f) }
XCTAssertEqual(f.dateFormat, "d. MMM y, HH:mm:ss")
let formattedString = f.string(from: date)
if formattedString != expected {
let applied = settings.map { $0.0 }.joined(separator: ",")
XCTFail("\(formattedString) != \(expected) using settings applied in order \(applied)")
}
}
}
// Confirm that https://bugs.swift.org/browse/SR-14108 is fixed.
func test_copy_sr14108() throws {
let date = Date(timeIntervalSinceReferenceDate: 0)
let original = DateFormatter()
original.timeZone = TimeZone(identifier: DEFAULT_TIMEZONE)
original.locale = Locale(identifier: DEFAULT_LOCALE)
original.dateFormat = "yyyy-MM-dd HH:mm:ss z"
XCTAssertEqual(original.string(from: date), "2001-01-01 00:00:00 GMT")
let copied = try XCTUnwrap(original.copy() as? DateFormatter)
XCTAssertEqual(original.timeZone, copied.timeZone)
XCTAssertEqual(original.locale, copied.locale)
XCTAssertEqual(copied.string(from: date), "2001-01-01 00:00:00 GMT")
copied.timeZone = TimeZone(abbreviation: "JST")
copied.locale = Locale(identifier: "ja_JP")
copied.dateFormat = "yyyy/MM/dd hh:mm:ssxxxxx"
XCTAssertNotEqual(original.timeZone, copied.timeZone)
XCTAssertNotEqual(original.locale, copied.locale)
XCTAssertEqual(original.string(from: date), "2001-01-01 00:00:00 GMT")
XCTAssertEqual(copied.string(from: date), "2001/01/01 09:00:00+09:00")
}
}