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//
// CustomDateComponentsFormattingTests.swift
// MullvadVPNTests
//
// Created by pronebird on 14/05/2020.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import XCTest
class CustomDateComponentsFormattingTests: XCTestCase {
func testEqualToTwoYearsFormatting() throws {
var dateComponents = DateComponents()
dateComponents.year = 2
let (startDate, endDate) = makeDateRange(addingComponents: dateComponents)
let result = CustomDateComponentsFormatting.localizedString(
from: startDate,
to: endDate,
calendar: calendar,
unitsStyle: .full
)
XCTAssertEqual(result, "2 years")
}
func testTimeIsPassedFormatting() throws {
var dateComponents = DateComponents()
dateComponents.day = -1
let (startDate, endDate) = makeDateRange(addingComponents: dateComponents)
let result = CustomDateComponentsFormatting.localizedString(
from: startDate,
to: endDate,
calendar: calendar,
unitsStyle: .full
)
XCTAssertEqual(result, "Less than a day")
}
func testLessThanTwoYearsFormatting() throws {
var dateComponents = DateComponents()
dateComponents.day = 365
let (startDate, endDate) = makeDateRange(addingComponents: dateComponents)
let result = CustomDateComponentsFormatting.localizedString(
from: startDate,
to: endDate,
calendar: calendar,
unitsStyle: .full
)
XCTAssertEqual(result, "365 days")
}
func testCloseToOneDayFormatting() throws {
var dateComponents = DateComponents()
dateComponents.hour = 23
dateComponents.minute = 30
let (startDate, endDate) = makeDateRange(addingComponents: dateComponents)
let result = CustomDateComponentsFormatting.localizedString(
from: startDate,
to: endDate,
calendar: calendar,
unitsStyle: .full
)
XCTAssertEqual(result, "Less than a day")
}
private func makeDateRange(addingComponents dateComponents: DateComponents) -> (Date, Date) {
let startDate = Date()
let endDate = calendar.date(byAdding: dateComponents, to: startDate)!
return (startDate, endDate)
}
private var calendar: Calendar {
var calendar = Calendar(identifier: .gregorian)
calendar.locale = Locale(identifier: "en_US_POSIX")
return calendar
}
}
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