feat(chat): 날짜 구분선 현지화 포매터를 추가한다

2026-10-16 19:54:25 +09:00
parent 3bd75f188f
commit e765c3c75c
4 changed files with 130 additions and 0 deletions
@@ -0,0 +1,88 @@
+import Foundation
+
+@main
+enum UserCreatorChatDatePresentationCheck {
+    static var assertions = 0
+
+    static func check(_ condition: Bool, _ message: String) {
+        guard condition else { print("FAIL: \(message)"); exit(1) }
+        assertions += 1
+    }
+
+    static func checkTitles(for date: Date, calendar: Calendar, timeZone: TimeZone, expected: [String], label: String) {
+        for (localeID, expectedTitle) in zip(["ko_KR", "en_US", "ja_JP"], expected) {
+            let title = UserCreatorChatDatePresentation.title(
+                for: date,
+                locale: Locale(identifier: localeID),
+                calendar: calendar,
+                timeZone: timeZone
+            )
+            check(title == expectedTitle, "\(label) \(localeID): expected '\(expectedTitle)', got '\(title)'")
+        }
+    }
+
+    static func main() {
+        let utc = TimeZone(secondsFromGMT: 0)!
+        let seoul = TimeZone(identifier: "Asia/Seoul")!
+        let losAngeles = TimeZone(identifier: "America/Los_Angeles")!
+        var calendar = Calendar(identifier: .gregorian)
+        calendar.timeZone = utc
+        var seoulCalendar = calendar
+        seoulCalendar.timeZone = seoul
+        var losAngelesCalendar = calendar
+        losAngelesCalendar.timeZone = losAngeles
+
+        let fixtures: [(label: String, timestamp: String, calendar: Calendar, timeZone: TimeZone, expected: [String])] = [
+            ("Gregorian UTC fixture", "2026-10-16T12:00:00Z", calendar, utc,
+             ["2026년 10월 16일 금요일", "Friday, October 16, 2026", "2026年10月16日 金曜日"]),
+            ("previous year", "2025-10-16T12:00:00Z", calendar, utc,
+             ["2025년 10월 16일 목요일", "Thursday, October 16, 2025", "2025年10月16日 木曜日"]),
+            ("UTC boundary", "2026-10-16T15:30:00Z", calendar, utc,
+             ["2026년 10월 16일 금요일", "Friday, October 16, 2026", "2026年10月16日 金曜日"]),
+            ("Seoul boundary in every app locale", "2026-10-16T15:30:00Z", seoulCalendar, seoul,
+             ["2026년 10월 17일 토요일", "Saturday, October 17, 2026", "2026年10月17日 土曜日"]),
+            ("Los Angeles boundary in every app locale", "2026-10-16T15:30:00Z", losAngelesCalendar, losAngeles,
+             ["2026년 10월 16일 금요일", "Friday, October 16, 2026", "2026年10月16日 金曜日"]),
+            ("Los Angeles calendar normalized to Seoul", "2026-10-16T15:30:00Z", losAngelesCalendar, seoul,
+             ["2026년 10월 17일 토요일", "Saturday, October 17, 2026", "2026年10月17日 土曜日"]),
+            ("Seoul calendar normalized to Los Angeles", "2026-10-16T15:30:00Z", seoulCalendar, losAngeles,
+             ["2026년 10월 16일 금요일", "Friday, October 16, 2026", "2026年10月16日 金曜日"])
+        ]
+        let isoFormatter = ISO8601DateFormatter()
+        for fixture in fixtures {
+            checkTitles(
+                for: isoFormatter.date(from: fixture.timestamp)!,
+                calendar: fixture.calendar,
+                timeZone: fixture.timeZone,
+                expected: fixture.expected,
+                label: fixture.label
+            )
+        }
+
+        let englishMonths = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
+        let englishWeekdays = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]
+        let koreanWeekdays = ["일요일", "월요일", "화요일", "수요일", "목요일", "금요일", "토요일"]
+        let japaneseWeekdays = ["日曜日", "月曜日", "火曜日", "水曜日", "木曜日", "金曜日", "土曜日"]
+        let today = Date()
+        let yesterday = calendar.date(byAdding: .day, value: -1, to: today)!
+        for (label, date) in [("today without relative wording", today), ("yesterday without relative wording", yesterday)] {
+            let components = calendar.dateComponents([.year, .month, .day, .weekday], from: date)
+            let year = components.year!
+            let month = components.month!
+            let day = components.day!
+            let weekday = components.weekday! - 1
+            checkTitles(
+                for: date,
+                calendar: calendar,
+                timeZone: utc,
+                expected: [
+                    "\(year)년 \(month)월 \(day)일 \(koreanWeekdays[weekday])",
+                    "\(englishWeekdays[weekday]), \(englishMonths[month - 1]) \(day), \(year)",
+                    "\(year)年\(month)月\(day)日 \(japaneseWeekdays[weekday])"
+                ],
+                label: label
+            )
+        }
+        print("PASS: \(assertions) assertions")
+    }
+}