fix: replace italian locale "un' ora fa" with "un'ora fa", add tests for it (#2930)

Author: fcarne

src/locale/it.js

@@ -23,7 +23,7 @@ const locale = {
     s: 'qualche secondo',
     m: 'un minuto',
     mm: '%d minuti',
-    h: 'un\' ora',
+    h: 'un\'ora',
     hh: '%d ore',
     d: 'un giorno',
     dd: '%d giorni',

test/locale/it.test.js

@@ -0,0 +1,84 @@
+import moment from 'moment'
+import MockDate from 'mockdate'
+import dayjs from '../../src'
+import '../../src/locale/it'
+import relativeTime from '../../src/plugin/relativeTime'
+import localizedFormat from '../../src/plugin/localizedFormat'
+
+dayjs.extend(relativeTime)
+dayjs.extend(localizedFormat)
+
+describe('Italian formats', () => {
+  beforeEach(() => {
+    dayjs.locale('it')
+    moment.locale('it')
+
+    MockDate.set(new Date())
+  })
+
+  afterEach(() => {
+    MockDate.reset()
+  })
+
+
+  it('Format month with locale function', () => {
+    for (let i = 0; i <= 7; i += 1) {
+      const dayjsWithLocale = dayjs().add(i, 'day')
+      const momentWithLocale = moment().add(i, 'day')
+      const testFormat1 = 'DD MMMM YYYY MMM'
+      const testFormat2 = 'dddd, MMMM D YYYY'
+      const testFormat3 = 'MMMM'
+      const testFormat4 = 'MMM'
+      const testFormat5 = 'L'
+      expect(dayjsWithLocale.format(testFormat1)).toEqual(momentWithLocale.format(testFormat1))
+      expect(dayjsWithLocale.format(testFormat2)).toEqual(momentWithLocale.format(testFormat2))
+      expect(dayjsWithLocale.format(testFormat3)).toEqual(momentWithLocale.format(testFormat3))
+      expect(dayjsWithLocale.format(testFormat4)).toEqual(momentWithLocale.format(testFormat4))
+      expect(dayjsWithLocale.format(testFormat5)).toEqual(momentWithLocale.format(testFormat5))
+    }
+  })
+
+  it('RelativeTime: Time from X', () => {
+    const T = [
+      [89.5, 'second'], // a minute
+      [2, 'minute'], // 2 minutes
+      [5, 'minute'], // 5 minutes
+      [43, 'minute'], // 44 minutes
+      [45, 'minute'], // an hour
+      [3, 'hour'], // 3 hours
+      [21, 'hour'], // 21 hours
+      [1, 'day'], // a day
+      [3, 'day'], // 3 day
+      [25, 'day'], // 25 days
+      [1, 'month'], // a month
+      [2, 'month'], // 2 month
+      [10, 'month'], // 10 month
+      [1, 'year'], // a year
+      [2, 'year'], // 2 year
+      [5, 'year'], // 5 year
+      [18, 'month'] // 2 years
+    ]
+
+
+    T.forEach((t) => {
+      expect(dayjs().from(dayjs().add(t[0], t[1])))
+        .toBe(moment().from(moment().add(t[0], t[1])))
+      expect(dayjs().from(dayjs().add(t[0], t[1]), true))
+        .toBe(moment().from(moment().add(t[0], t[1]), true))
+    })
+  })
+
+  // moment.js uses `alcuni secondi` while dayjs uses `qualche secondo`.
+  it('RelativeTime: A few seconds', () => {
+    const T = [
+      [44.4, 'second'] // a few seconds
+    ]
+
+    T.forEach((t) => {
+      expect(dayjs().from(dayjs().add(t[0], t[1])))
+        .toBe('qualche secondo fa')
+      expect(dayjs().from(dayjs().add(t[0], t[1]), true))
+        .toBe('qualche secondo')
+    })
+  })
+})