NSDate comparison between original and converted through components and a calendar

DateConversionThroughCalendarTests.m

//
//  DateConversionThroughCalendarTests.m
//  TestOnNSDateDateTests
//
//  Created by Simon Kim on 10/08/2018.
//  Copyright © 2018 SeoGiwon. All rights reserved.
//

#import <XCTest/XCTest.h>


@interface CalendarWash: NSObject
- (NSDate *) convertDate:(NSDate *) date calendarIdentifier:(NSCalendarIdentifier) calendarIdentifier unitFlags:(NSCalendarUnit) unitFlags;
@end

@implementation CalendarWash
- (NSDate *) convertDate:(NSDate *) date calendarIdentifier:(NSCalendarIdentifier) calendarIdentifier unitFlags:(NSCalendarUnit) unitFlags
{
    NSCalendar *calendar = [NSCalendar calendarWithIdentifier:calendarIdentifier];
    NSDateComponents *components = [calendar components:unitFlags fromDate:date];
    return [calendar dateFromComponents:components];
}
@end


@interface DateConversionThroughCalendarTests : XCTestCase

@end

@implementation DateConversionThroughCalendarTests

- (void)setUp {
    // Put setup code here. This method is called before the invocation of each test method in the class.
}

- (void)tearDown {
    // Put teardown code here. This method is called after the invocation of each test method in the class.
}

- (void)testDayWeekday {
    CalendarWash *wash = [[CalendarWash alloc] init];
    NSDate *date = [NSDate date];
    NSDate *greg = [wash convertDate:date calendarIdentifier:NSCalendarIdentifierGregorian unitFlags:(NSCalendarUnitDay | NSCalendarUnitWeekday)];
    NSDate *budd = [wash convertDate:date calendarIdentifier:NSCalendarIdentifierBuddhist unitFlags:(NSCalendarUnitDay | NSCalendarUnitWeekday)];
    
    double seconds = floor(date.timeIntervalSince1970);
    double secondsGreg = floor(greg.timeIntervalSince1970);
    double secondsBudd = floor(budd.timeIntervalSince1970);
    
    NSLog(@"date: %.1f - %@", seconds, date);
    NSLog(@"greg: %.1f - %@", secondsGreg, greg);
    NSLog(@"budd: %.1f - %@", secondsBudd, budd);
    XCTAssert(seconds == secondsGreg);
    XCTAssert(seconds == secondsBudd);
    XCTAssert(secondsGreg == secondsBudd);
}

- (void)testDateTime {
    CalendarWash *wash = [[CalendarWash alloc] init];
    NSCalendarUnit unitFlags = (NSCalendarUnitDay | NSCalendarUnitWeekday | NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond);
    NSDate *date = [NSDate date];
    NSDate *greg = [wash convertDate:date calendarIdentifier:NSCalendarIdentifierGregorian unitFlags:unitFlags];
    NSDate *budd = [wash convertDate:date calendarIdentifier:NSCalendarIdentifierBuddhist unitFlags:unitFlags];
    
    double seconds = floor(date.timeIntervalSince1970);
    double secondsGreg = floor(greg.timeIntervalSince1970);
    double secondsBudd = floor(budd.timeIntervalSince1970);
    
    NSLog(@"date: %.1f - %@", seconds, date);
    NSLog(@"greg: %.1f - %@", secondsGreg, greg);
    NSLog(@"budd: %.1f - %@", secondsBudd, budd);
    XCTAssert(seconds == secondsGreg);
    XCTAssert(seconds == secondsBudd);
    XCTAssert(secondsGreg == secondsBudd);
}

@end

test-result.txt

Test: testDateTime in DateConversionThroughCalendarTests passed on iPhone X


Test: testDayWeekday in DateConversionThroughCalendarTests failed on iPhone X
Assertions: ((seconds == secondsGreg) is true) failed
File: DateConversionThroughCalendarTests.m:53

Assertions: ((seconds == secondsBudd) is true) failed
File: DateConversionThroughCalendarTests.m:54

Assertions: ((secondsGreg == secondsBudd) is true) failed
File: DateConversionThroughCalendarTests.m:55



UI Test Activity: 
Assertion Failure: DateConversionThroughCalendarTests.m:53: ((seconds == secondsGreg) is true) failed



UI Test Activity: 
Assertion Failure: DateConversionThroughCalendarTests.m:54: ((seconds == secondsBudd) is true) failed



UI Test Activity: 
Assertion Failure: DateConversionThroughCalendarTests.m:55: ((secondsGreg == secondsBudd) is true) failed



Test: testDateTime() in TestOnNSDateDateTests passed on iPhone X


Test: testDayWeekday() in TestOnNSDateDateTests failed on iPhone X
Assertions: XCTAssertTrue failed - 
File: TestOnNSDateDateTests.swift:42

Assertions: XCTAssertTrue failed - 
File: TestOnNSDateDateTests.swift:43

Assertions: XCTAssertTrue failed - 
File: TestOnNSDateDateTests.swift:44



UI Test Activity: 
Assertion Failure: TestOnNSDateDateTests.swift:42: XCTAssertTrue failed - 



UI Test Activity: 
Assertion Failure: TestOnNSDateDateTests.swift:43: XCTAssertTrue failed - 



UI Test Activity: 
Assertion Failure: TestOnNSDateDateTests.swift:44: XCTAssertTrue failed - 



Test: testYearMonthDay() in TestOnNSDateDateTests failed on iPhone X
Assertions: XCTAssertTrue failed - 
File: TestOnNSDateDateTests.swift:59

Assertions: XCTAssertTrue failed - 
File: TestOnNSDateDateTests.swift:60



UI Test Activity: 
Assertion Failure: TestOnNSDateDateTests.swift:59: XCTAssertTrue failed - 



UI Test Activity: 
Assertion Failure: TestOnNSDateDateTests.swift:60: XCTAssertTrue failed - 

TestOnNSDateDateTests.swift

//
//  TestOnNSDateDateTests.swift
//  TestOnNSDateDateTests
//
//  Created by Simon Kim on 10/08/2018.
//  Copyright © 2018 SeoGiwon. All rights reserved.
//

import XCTest

class CalendarWash {
    func convert(date: Date, using calendarIdentifier: NSCalendar.Identifier, unitFlags: NSCalendar.Unit) -> Date {
        let calendar = NSCalendar(identifier: calendarIdentifier)!
        let components = calendar.components(unitFlags, from: date)
        return calendar.date(from: components)!
    }
}
class TestOnNSDateDateTests: XCTestCase {
    
    override func setUp() {
        super.setUp()
        // Put setup code here. This method is called before the invocation of each test method in the class.
    }
    
    override func tearDown() {
        // Put teardown code here. This method is called after the invocation of each test method in the class.
        super.tearDown()
    }
    
    func testDayWeekday() {
        let wash = CalendarWash()
        let date = Date()
        let greg = wash.convert(date: date, using: .gregorian, unitFlags: [.day, .weekday])
        let budd = wash.convert(date: date, using: .buddhist, unitFlags: [.day, .weekday])
        
        let seconds = floor(date.timeIntervalSince1970)
        let secondsGreg = floor(greg.timeIntervalSince1970)
        let secondsBudd = floor(budd.timeIntervalSince1970)
        print("date: \(seconds) - \(date)")
        print("greg: \(secondsGreg) - \(greg)")
        print("budd: \(secondsBudd) - \(budd)")
        XCTAssert(seconds  == secondsGreg)
        XCTAssert(seconds  == secondsBudd)
        XCTAssert(secondsGreg == secondsBudd)
    }
    
    func testYearMonthDay() {
        let wash = CalendarWash()
        let date = Date()
        let greg = wash.convert(date: date, using: .gregorian, unitFlags: [.day, .year, .month])
        let budd = wash.convert(date: date, using: .buddhist, unitFlags: [.day, .year, .month])
        
        let seconds = floor(date.timeIntervalSince1970)
        let secondsGreg = floor(greg.timeIntervalSince1970)
        let secondsBudd = floor(budd.timeIntervalSince1970)
        print("date: \(seconds) - \(date)")
        print("greg: \(secondsGreg) - \(greg)")
        print("budd: \(secondsBudd) - \(budd)")
        XCTAssert(seconds  == secondsGreg)
        XCTAssert(seconds  == secondsBudd)
        XCTAssert(secondsGreg == secondsBudd)
    }

    func testDateTime() {
        let wash = CalendarWash()
        let date = Date()
        let greg = wash.convert(date: date, using: .gregorian, unitFlags: [.day, .year, .month, .hour, .minute, .second])
        let budd = wash.convert(date: date, using: .buddhist, unitFlags: [.day, .year, .month, .hour, .minute, .second])
        
        let seconds = floor(date.timeIntervalSince1970)
        let secondsGreg = floor(greg.timeIntervalSince1970)
        let secondsBudd = floor(budd.timeIntervalSince1970)
        print("date: \(seconds) - \(date)")
        print("greg: \(secondsGreg) - \(greg)")
        print("budd: \(secondsBudd) - \(budd)")
        XCTAssert(seconds  == secondsGreg)
        XCTAssert(seconds  == secondsBudd)
        XCTAssert(secondsGreg == secondsBudd)
        
    }

    func testPerformanceExample() {
        // This is an example of a performance test case.
        self.measure {
            // Put the code you want to measure the time of here.
        }
    }
    
}