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// Copyright (c) 2014 - 2017 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 canImport(TestSupport)
import TestSupport
#endif
#if canImport(FoundationEssentials)
@testable import FoundationEssentials
#endif
#if FOUNDATION_FRAMEWORK
@testable import Foundation
#endif
final class ISO8601FormatStyleParsingTests: XCTestCase {
/// See also the format-only tests in DateISO8601FormatStyleEssentialsTests
func test_ISO8601Parse() throws {
let iso8601 = Date.ISO8601FormatStyle()
// Date is: "2022-01-28 15:35:46"
XCTAssertEqual(try? iso8601.parse("2022-01-28T15:35:46Z"), Date(timeIntervalSinceReferenceDate: 665076946.0))
var iso8601Pacific = iso8601
iso8601Pacific.timeZone = TimeZone(secondsFromGMT: -3600 * 8)!
XCTAssertEqual(try? iso8601Pacific.timeSeparator(.omitted).parse("2022-01-28T073546-0800"), Date(timeIntervalSinceReferenceDate: 665076946.0))
// Day-only results: the default time is midnight for parsed date when the time piece is missing
// Date is: "2022-01-28 00:00:00"
XCTAssertEqual(try? iso8601.year().month().day().dateSeparator(.dash).parse("2022-01-28"), Date(timeIntervalSinceReferenceDate: 665020800.0))
// Date is: "2022-01-28 00:00:00"
XCTAssertEqual(try? iso8601.year().month().day().dateSeparator(.omitted).parse("20220128"), Date(timeIntervalSinceReferenceDate: 665020800.0))
// Time-only results: we use the default date of the format style, 1970-01-01, to supplement the parsed date without year, month or day
// Date is: "1970-01-23 00:00:00"
XCTAssertEqual(try? iso8601.weekOfYear().day().dateSeparator(.dash).parse("W04-05"), Date(timeIntervalSinceReferenceDate: -976406400.0))
// Date is: "1970-01-28 15:35:46"
XCTAssertEqual(try? iso8601.day().time(includingFractionalSeconds: false).timeSeparator(.colon).parse("028T15:35:46"), Date(timeIntervalSinceReferenceDate: -975918254.0))
// Date is: "1970-01-01 15:35:46"
XCTAssertEqual(try? iso8601.time(includingFractionalSeconds: false).timeSeparator(.colon).parse("15:35:46"), Date(timeIntervalSinceReferenceDate: -978251054.0))
// Date is: "1970-01-01 15:35:46"
XCTAssertEqual(try? iso8601.time(includingFractionalSeconds: false).timeZone(separator: .omitted).parse("15:35:46Z"), Date(timeIntervalSinceReferenceDate: -978251054.0))
// Date is: "1970-01-01 15:35:46"
XCTAssertEqual(try? iso8601.time(includingFractionalSeconds: false).timeZone(separator: .colon).parse("15:35:46Z"), Date(timeIntervalSinceReferenceDate: -978251054.0))
// Date is: "1970-01-01 15:35:46"
XCTAssertEqual(try? iso8601.timeZone(separator: .colon).time(includingFractionalSeconds: false).timeSeparator(.colon).parse("15:35:46Z"), Date(timeIntervalSinceReferenceDate: -978251054.0))
}
func test_weekOfYear() throws {
let iso8601 = Date.ISO8601FormatStyle()
// Test some dates around the 2019 - 2020 end of year, and 2026 which has W53
let dates = [
("2019-W52-07", "2019-12-29"),
("2020-W01-01", "2019-12-30"),
("2020-W01-02", "2019-12-31"),
("2020-W01-03", "2020-01-01"),
("2026-W53-01", "2026-12-28"),
("2026-W53-02", "2026-12-29"),
("2026-W53-03", "2026-12-30"),
("2026-W53-04", "2026-12-31"),
("2026-W53-05", "2027-01-01"),
("2026-W53-06", "2027-01-02"),
("2026-W53-07", "2027-01-03"),
("2027-W01-01", "2027-01-04"),
("2027-W01-02", "2027-01-05")
]
for d in dates {
let parsedWoY = try iso8601.year().weekOfYear().day().parse(d.0)
let parsedY = try iso8601.year().month().day().parse(d.1)
XCTAssertEqual(parsedWoY, parsedY)
}
}
func test_zeroLeadingDigits() {
// The parser allows for an arbitrary number of 0 pads in digits, including none.
let iso8601 = Date.ISO8601FormatStyle()
// Date is: "2022-01-28 15:35:46"
XCTAssertEqual(try? iso8601.parse("2022-01-28T15:35:46Z"), Date(timeIntervalSinceReferenceDate: 665076946.0))
XCTAssertEqual(try? iso8601.parse("002022-01-28T15:35:46Z"), Date(timeIntervalSinceReferenceDate: 665076946.0))
XCTAssertEqual(try? iso8601.parse("2022-0001-28T15:35:46Z"), Date(timeIntervalSinceReferenceDate: 665076946.0))
XCTAssertEqual(try? iso8601.parse("2022-01-0028T15:35:46Z"), Date(timeIntervalSinceReferenceDate: 665076946.0))
XCTAssertEqual(try? iso8601.parse("2022-1-28T15:35:46Z"), Date(timeIntervalSinceReferenceDate: 665076946.0))
XCTAssertEqual(try? iso8601.parse("2022-01-28T15:35:06Z"), Date(timeIntervalSinceReferenceDate: 665076906.0))
XCTAssertEqual(try? iso8601.parse("2022-01-28T15:35:6Z"), Date(timeIntervalSinceReferenceDate: 665076906.0))
XCTAssertEqual(try? iso8601.parse("2022-01-28T15:05:46Z"), Date(timeIntervalSinceReferenceDate: 665075146.0))
XCTAssertEqual(try? iso8601.parse("2022-01-28T15:5:46Z"), Date(timeIntervalSinceReferenceDate: 665075146.0))
}
func test_timeZones() {
let iso8601 = Date.ISO8601FormatStyle()
let date = Date(timeIntervalSinceReferenceDate: 665076946.0)
var iso8601Pacific = iso8601
iso8601Pacific.timeZone = TimeZone(secondsFromGMT: -3600 * 8)!
// Has a seconds component (-28830)
var iso8601PacificIsh = iso8601
iso8601PacificIsh.timeZone = TimeZone(secondsFromGMT: -3600 * 8 - 30)!
XCTAssertEqual(try? iso8601Pacific.timeSeparator(.omitted).parse("2022-01-28T073546-0800"), date)
XCTAssertEqual(try? iso8601Pacific.timeSeparator(.omitted).timeZoneSeparator(.colon).parse("2022-01-28T073546-08:00"), date)
XCTAssertEqual(try? iso8601PacificIsh.timeSeparator(.omitted).parse("2022-01-28T073516-080030"), date)
XCTAssertEqual(try? iso8601PacificIsh.timeSeparator(.omitted).timeZoneSeparator(.colon).parse("2022-01-28T073516-08:00:30"), date)
var iso8601gmtP1 = iso8601
iso8601gmtP1.timeZone = TimeZone(secondsFromGMT: 3600)!
XCTAssertEqual(try? iso8601gmtP1.timeSeparator(.omitted).parse("2022-01-28T163546+0100"), date)
XCTAssertEqual(try? iso8601gmtP1.timeSeparator(.omitted).parse("2022-01-28T163546+010000"), date)
XCTAssertEqual(try? iso8601gmtP1.timeSeparator(.omitted).timeZoneSeparator(.colon).parse("2022-01-28T163546+01:00"), date)
XCTAssertEqual(try? iso8601gmtP1.timeSeparator(.omitted).timeZoneSeparator(.colon).parse("2022-01-28T163546+01:00:00"), date)
// Due to a quirk of the original implementation, colons are allowed to be present in the time zone even if the time zone separator is omitted
XCTAssertEqual(try? iso8601gmtP1.timeSeparator(.omitted).parse("2022-01-28T163546+01:00"), date)
XCTAssertEqual(try? iso8601gmtP1.timeSeparator(.omitted).parse("2022-01-28T163546+01:00:00"), date)
}
func test_fractionalSeconds() {
let expectedDate = Date(timeIntervalSinceReferenceDate: 646876592.34567)
var iso8601 = Date.ISO8601FormatStyle().year().month().day().time(includingFractionalSeconds: true)
iso8601.timeZone = .gmt
XCTAssertEqual(try? iso8601.parse("2021-07-01T23:56:32.34567"), expectedDate)
}
func test_specialTimeZonesAndSpaces() {
let reference = try! Date("2020-03-05T12:00:00+00:00", strategy: .iso8601)
let tests : [(String, Date.ISO8601FormatStyle)] = [
("2020-03-05T12:00:00+00:00", Date.ISO8601FormatStyle()),
("2020-03-05T12:00:00+0000", Date.ISO8601FormatStyle()),
("2020-03-05T12:00:00GMT", Date.ISO8601FormatStyle()),
("2020-03-05T12:00:00UTC", Date.ISO8601FormatStyle()),
("2020-03-05T11:00:00-01:00", Date.ISO8601FormatStyle().year().month().day().time(includingFractionalSeconds: false).timeSeparator(.colon).timeZone(separator: .colon)),
("2020-03-05T12:00:00Z", Date.ISO8601FormatStyle().year().month().day().time(includingFractionalSeconds: false).timeSeparator(.colon).timeZone(separator: .colon)), // allow Z
("2020-03-05T12:00:00z", Date.ISO8601FormatStyle().year().month().day().time(includingFractionalSeconds: false).timeSeparator(.colon).timeZone(separator: .colon)), // allow z
("2020-03-05T12:00:00UTC", Date.ISO8601FormatStyle().year().month().day().time(includingFractionalSeconds: false).timeSeparator(.colon).timeZone(separator: .colon)), // allow UTC
("2020-03-05T12:00:00GMT", Date.ISO8601FormatStyle().year().month().day().time(includingFractionalSeconds: false).timeSeparator(.colon).timeZone(separator: .colon)), // allow GMT
("2020-03-05T13:00:00UTC+1:00", Date.ISO8601FormatStyle().year().month().day().time(includingFractionalSeconds: false).timeSeparator(.colon).timeZone(separator: .colon)), // allow UTC offsets
("2020-03-05T11:00:00GMT-1:00", Date.ISO8601FormatStyle().year().month().day().time(includingFractionalSeconds: false).timeSeparator(.colon).timeZone(separator: .colon)), // allow GMT offsets
("2020-03-05 12:00:00+0000", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .omitted)),
("2020-03-05 11:00:00-0100", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .omitted)),
("2020-03-05 11:00:00-0100", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .omitted)), // spaces allowed between date/time and time
("2020-03-05 11:00:00 -0100", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .omitted)), // spaces allowed between date/time and time/timeZone
("2020-03-05 11:00:00 -0100", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .omitted)), // spaces allowed between date/time and time/timeZone
("2020-03-05 10:30:00 -0130", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .omitted)), // spaces allowed between date/time and time/timeZone - half hour offset
("2020-03-05 10:30:00 -0130", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .colon)), // separator can be colon, or missing
("2020-03-05 12:00:00 GMT", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .colon)), // spaces between time zone and GMT
("2020-03-05 11:00:00 GMT-0100", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .colon)), // spaces between time zone and GMT, GMT has offset
("2020-03-05 11:00:00 gMt-0100", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .colon)), // spaces between time zone and GMT, GMT has offset, GMT has different capitalization
("2020-03-05 12:00:00 GMT -0100", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .colon)), // spaces after GMT cause rest of time to be ignored (note here time of 12:00:00 instead of 11:00:00)
("2020-03-05 12:00:00 GMT +0100", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .colon)), // spaces after GMT cause rest of time to be ignored (note here time of 12:00:00 instead of 11:00:00)
("2020-03-05 12:00:00 Z +0100", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .colon)), // values after Z are ignored, spaces
("2020-03-05 12:00:00 Z+0100", Date.ISO8601FormatStyle().year().month().day().dateTimeSeparator(.space).time(includingFractionalSeconds: false).timeZone(separator: .colon)), // values after Z are ignored, no spaces
]
for (parseMe, style) in tests {
let parsed = try? style.parse(parseMe)
XCTAssertEqual(parsed, reference, """
parsing : \(parseMe)
expected: \(reference) \(reference.timeIntervalSinceReferenceDate)
result : \(parsed != nil ? parsed!.debugDescription : "nil") \(parsed != nil ? parsed!.timeIntervalSinceReferenceDate : 0)
""")
}
}
#if canImport(FoundationInternationalization) || FOUNDATION_FRAMEWORK
func test_chileTimeZone() {
var iso8601Chile = Date.ISO8601FormatStyle().year().month().day()
iso8601Chile.timeZone = TimeZone(name: "America/Santiago")!
let date = try? iso8601Chile.parse("2023-09-03")
XCTAssertNotNil(date)
}
#endif
}
@available(macOS 13.0, iOS 16.0, tvOS 16.0, watchOS 9.0, *)
final class DateISO8601FormatStylePatternMatchingTests : XCTestCase {
func _matchFullRange(_ str: String, formatStyle: Date.ISO8601FormatStyle, expectedUpperBound: String.Index?, expectedDate: Date?, file: StaticString = #filePath, line: UInt = #line) {
_matchRange(str, formatStyle: formatStyle, range: nil, expectedUpperBound: expectedUpperBound, expectedDate: expectedDate, file: file, line: line)
}
func _matchRange(_ str: String, formatStyle: Date.ISO8601FormatStyle, range: Range<String.Index>?, expectedUpperBound: String.Index?, expectedDate: Date?, file: StaticString = #filePath, line: UInt = #line) {
// FIXME: Need tests that starts from somewhere else
let m = try? formatStyle.consuming(str, startingAt: str.startIndex, in: range ?? str.startIndex..<str.endIndex)
let upperBound = m?.upperBound
let match = m?.output
let upperBoundDescription = upperBound?.utf16Offset(in: str)
let expectedUpperBoundDescription = expectedUpperBound?.utf16Offset(in: str)
XCTAssertEqual(upperBound, expectedUpperBound, "found upperBound: \(String(describing: upperBoundDescription)); expected: \(String(describing: expectedUpperBoundDescription))", file: file, line: line)
if let match, let expectedDate {
XCTAssertEqual(
match.timeIntervalSinceReferenceDate,
expectedDate.timeIntervalSinceReferenceDate,
accuracy: 0.001,
file: file,
line: line
)
}
}
func testMatchDefaultISO8601Style() throws {
let iso8601FormatStyle = Date.ISO8601FormatStyle()
func verify(_ str: String, expectedUpperBound: String.Index?, expectedDate: Date?, file: StaticString = #filePath, line: UInt = #line) {
_matchFullRange(str, formatStyle: iso8601FormatStyle, expectedUpperBound: expectedUpperBound, expectedDate: expectedDate, file: file, line: line)
}
// dateFormatter.date(from: "2021-07-01 15:56:32")!
let expectedDate = Date(timeIntervalSinceReferenceDate: 646847792.0)
let str = "2021-07-01T15:56:32Z"
verify(str, expectedUpperBound: str.endIndex, expectedDate: expectedDate)
verify("\(str) text", expectedUpperBound: str.endIndex, expectedDate: expectedDate)
verify("some \(str)", expectedUpperBound: nil, expectedDate: nil) // We can't find a matched date because the matching starts at the first character
verify("9999-37-40T35:70:99Z", expectedUpperBound: nil, expectedDate: nil) // This is not a valid date
}
func testPartialMatchISO8601() throws {
var expectedDate: Date?
var expectedLength: Int?
func verify(_ str: String, _ style: Date.ISO8601FormatStyle, file: StaticString = #filePath, line: UInt = #line) {
let expectedUpperBoundStrIndx = (expectedLength != nil) ? str.index(str.startIndex, offsetBy: expectedLength!) : nil
_matchFullRange(str, formatStyle: style, expectedUpperBound: expectedUpperBoundStrIndx, expectedDate: expectedDate, file: file, line: line)
}
let gmt = TimeZone(secondsFromGMT: 0)!
let pst = TimeZone(secondsFromGMT: -3600*8)!
// dateFormatter.date(from: "2021-07-01 23:56:32")!
expectedDate = Date(timeIntervalSinceReferenceDate: 646876592.0)
expectedLength = "2021-07-01T23:56:32Z".count
// This format requires a time zone
do {
expectedDate = nil
expectedLength = nil
verify("2021-07-01T23:56:32", .iso8601WithTimeZone())
verify("2021-07-01T235632", .iso8601WithTimeZone())
verify("2021-07-01 23:56:32Z", .iso8601WithTimeZone())
}
// This format matches up before the time zone, and creates the date using the specified time zone
do {
// dateFormatter.date(from: "2021-07-01 23:56:32")!
expectedDate = Date(timeIntervalSinceReferenceDate: 646876592.0)
expectedLength = "2021-07-01T23:56:32".count
verify("2021-07-01T23:56:32", .iso8601(timeZone: gmt))
verify("2021-07-01T23:56:32Z", .iso8601(timeZone: gmt))
verify("2021-07-01T15:56:32Z", .iso8601(timeZone: pst))
verify("2021-07-01T15:56:32+0000", .iso8601(timeZone: pst))
verify("2021-07-01T15:56:32+00:00", .iso8601(timeZone: pst))
}
do {
expectedLength = "2021-07-01T23:56:32.34567".count
// fractionalDateFormatter.date(from: "2021-07-01 23:56:32.34567")!
expectedDate = Date(timeIntervalSinceReferenceDate: 646876592.345)
verify("2021-07-01T23:56:32.34567", .iso8601(timeZone: gmt, includingFractionalSeconds: true))
verify("2021-07-01T23:56:32.34567Z", .iso8601(timeZone: gmt, includingFractionalSeconds: true))
}
do {
expectedLength = "20210701T235632".count
// dateFormatter.date(from: "2021-07-01 23:56:32")!
expectedDate = Date(timeIntervalSinceReferenceDate: 646876592.0)
verify("20210701T235632", .iso8601(timeZone: gmt, dateSeparator: .omitted, timeSeparator: .omitted))
verify("20210701 235632", .iso8601(timeZone: gmt, dateSeparator: .omitted, dateTimeSeparator: .space, timeSeparator: .omitted))
}
// This format matches the date part only, and creates the date using the specified time zone
do {
// dateFormatter.date(from: "2021-07-01 00:00:00")!
expectedDate = Date(timeIntervalSinceReferenceDate: 646790400.0)
expectedLength = "2021-07-01".count
verify("2021-07-01", .iso8601Date(timeZone: gmt))
verify("2021-07-01T15:56:32+08:00", .iso8601Date(timeZone: gmt))
verify("2021-07-01 15:56:32+08:00", .iso8601Date(timeZone: gmt))
verify("2021-07-01 i love summer", .iso8601Date(timeZone: gmt))
}
do {
// dateFormatter.date(from: "2021-07-01 00:00:00")!
expectedDate = Date(timeIntervalSinceReferenceDate: 646790400.0)
expectedLength = "20210701".count
verify("20210701", .iso8601Date(timeZone: gmt, dateSeparator: .omitted))
verify("20210701T155632+0800", .iso8601Date(timeZone: gmt, dateSeparator: .omitted))
verify("20210701 155632+0800", .iso8601Date(timeZone: gmt, dateSeparator: .omitted))
}
}
func testFullMatch() {
var expectedDate: Date
func verify(_ str: String, _ style: Date.ISO8601FormatStyle, file: StaticString = #filePath, line: UInt = #line) {
_matchFullRange(str, formatStyle: style, expectedUpperBound: str.endIndex, expectedDate: expectedDate, file: file, line: line)
}
do {
// dateFormatter.date(from: "2021-07-01 23:56:32")!
expectedDate = Date(timeIntervalSinceReferenceDate: 646876592.0)
verify("2021-07-01T23:56:32Z", .iso8601WithTimeZone())
verify("20210701 23:56:32Z", .iso8601WithTimeZone(dateSeparator: .omitted, dateTimeSeparator: .space))
verify("2021-07-01 15:56:32-0800", .iso8601WithTimeZone(dateTimeSeparator: .space))
verify("2021-07-01T15:56:32-08:00", .iso8601WithTimeZone(timeZoneSeparator: .colon))
}
do {
// fractionalDateFormatter.date(from: "2021-07-01 23:56:32.314")!
expectedDate = Date(timeIntervalSinceReferenceDate: 646876592.3139999)
verify("2021-07-01T23:56:32.314Z", .iso8601WithTimeZone(includingFractionalSeconds: true))
verify("2021-07-01T235632.314Z", .iso8601WithTimeZone(includingFractionalSeconds: true, timeSeparator: .omitted))
verify("2021-07-01T23:56:32.314000Z", .iso8601WithTimeZone(includingFractionalSeconds: true))
}
}
}
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