TestDateComponents.swift

// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2018 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 TestDateComponents: XCTestCase {
    static var allTests: [(String, (TestDateComponents) -> () throws -> Void)] {
        return [
            ("test_hash", test_hash),
        ]
    }

    func test_hash() {
        let c1 = DateComponents(year: 2018, month: 8, day: 1)
        let c2 = DateComponents(year: 2018, month: 8, day: 1)

        XCTAssertEqual(c1, c2)
        XCTAssertEqual(c1.hashValue, c2.hashValue)

        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.calendar,
            throughValues: [
                Calendar(identifier: .gregorian),
                Calendar(identifier: .buddhist),
                Calendar(identifier: .chinese),
                Calendar(identifier: .coptic),
                Calendar(identifier: .hebrew),
                Calendar(identifier: .indian),
                Calendar(identifier: .islamic),
                Calendar(identifier: .iso8601),
                Calendar(identifier: .japanese),
                Calendar(identifier: .persian)
            ])
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.timeZone,
            throughValues: (-10...10).map { TimeZone(secondsFromGMT: 3600 * $0) })
        // Note: These assume components aren't range checked.
        let integers: [Int?] = (0..<20).map { $0 as Int? }
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.era,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.year,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.quarter,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.month,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.day,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.hour,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.minute,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.second,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.nanosecond,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.weekOfYear,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.weekOfMonth,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.yearForWeekOfYear,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.weekday,
            throughValues: integers)
        checkHashing_ValueType(
            initialValue: DateComponents(),
            byMutating: \DateComponents.weekdayOrdinal,
            throughValues: integers)
        // isLeapMonth does not have enough values to test it here.
    }
}